diff --git a/core/modules/action/tests/action_bulk_test/action_bulk_test.info.yml b/core/modules/action/tests/action_bulk_test/action_bulk_test.info.yml
index f9e78fa..296a33a 100644
--- a/core/modules/action/tests/action_bulk_test/action_bulk_test.info.yml
+++ b/core/modules/action/tests/action_bulk_test/action_bulk_test.info.yml
@@ -4,7 +4,6 @@ description: 'Support module for action bulk form testing.'
 package: Testing
 version: VERSION
 core: 8.x
-hidden: true
 dependencies:
   - action
   - views
diff --git a/core/modules/aggregator/tests/modules/aggregator_test/aggregator_test.info.yml b/core/modules/aggregator/tests/modules/aggregator_test/aggregator_test.info.yml
index 835d3ed..3d3d0e9 100644
--- a/core/modules/aggregator/tests/modules/aggregator_test/aggregator_test.info.yml
+++ b/core/modules/aggregator/tests/modules/aggregator_test/aggregator_test.info.yml
@@ -4,4 +4,3 @@ description: 'Support module for aggregator related testing.'
 package: Testing
 version: VERSION
 core: 8.x
-hidden: true
diff --git a/core/modules/aggregator/tests/modules/aggregator_test_views/aggregator_test_views.info.yml b/core/modules/aggregator/tests/modules/aggregator_test_views/aggregator_test_views.info.yml
index 1d99987..58da126 100644
--- a/core/modules/aggregator/tests/modules/aggregator_test_views/aggregator_test_views.info.yml
+++ b/core/modules/aggregator/tests/modules/aggregator_test_views/aggregator_test_views.info.yml
@@ -7,4 +7,3 @@ core: 8.x
 dependencies:
   - aggregator
   - views
-hidden: true
diff --git a/core/modules/block/custom_block/tests/modules/custom_block_test/custom_block_test.info.yml b/core/modules/block/custom_block/tests/modules/custom_block_test/custom_block_test.info.yml
index d0cf40c..747efa4 100644
--- a/core/modules/block/custom_block/tests/modules/custom_block_test/custom_block_test.info.yml
+++ b/core/modules/block/custom_block/tests/modules/custom_block_test/custom_block_test.info.yml
@@ -4,4 +4,3 @@ description: "Support module for custom block related testing."
 package: Testing
 version: VERSION
 core: 8.x
-hidden: TRUE
diff --git a/core/modules/block/tests/modules/block_test/block_test.info.yml b/core/modules/block/tests/modules/block_test/block_test.info.yml
index d6e4137..9a8895f 100644
--- a/core/modules/block/tests/modules/block_test/block_test.info.yml
+++ b/core/modules/block/tests/modules/block_test/block_test.info.yml
@@ -4,4 +4,3 @@ description: 'Provides test blocks.'
 package: Testing
 version: VERSION
 core: 8.x
-hidden: true
diff --git a/core/modules/block/tests/modules/block_test/themes/block_test_theme/block_test_theme.info.yml b/core/modules/block/tests/modules/block_test/themes/block_test_theme/block_test_theme.info.yml
index 63fd5b0..96c7650 100644
--- a/core/modules/block/tests/modules/block_test/themes/block_test_theme/block_test_theme.info.yml
+++ b/core/modules/block/tests/modules/block_test/themes/block_test_theme/block_test_theme.info.yml
@@ -3,7 +3,6 @@ type: theme
 description: 'Theme for testing the block system'
 version: VERSION
 core: 8.x
-hidden: true
 regions:
   sidebar_first: 'Left sidebar'
   sidebar_second: 'Right sidebar'
diff --git a/core/modules/block/tests/modules/block_test_views/block_test_views.info.yml b/core/modules/block/tests/modules/block_test_views/block_test_views.info.yml
index aad655e..f7a32c0 100644
--- a/core/modules/block/tests/modules/block_test_views/block_test_views.info.yml
+++ b/core/modules/block/tests/modules/block_test_views/block_test_views.info.yml
@@ -3,7 +3,6 @@ type: module
 description: 'Provides a view and block to test block displays in views.'
 package: Core
 version: VERSION
-hidden: TRUE
 core: 8.x
 dependencies:
   - block
diff --git a/core/modules/breakpoint/tests/themes/breakpoint_test_theme/breakpoint_test_theme.info.yml b/core/modules/breakpoint/tests/themes/breakpoint_test_theme/breakpoint_test_theme.info.yml
index 0fa9096..779f997 100644
--- a/core/modules/breakpoint/tests/themes/breakpoint_test_theme/breakpoint_test_theme.info.yml
+++ b/core/modules/breakpoint/tests/themes/breakpoint_test_theme/breakpoint_test_theme.info.yml
@@ -4,4 +4,3 @@ description: 'Test theme for breakpoint.'
 version: VERSION
 core: 8.x
 'base theme': bartik
-hidden: true
diff --git a/core/modules/ckeditor/tests/modules/ckeditor_test.info.yml b/core/modules/ckeditor/tests/modules/ckeditor_test.info.yml
index 8aad460..d7d5450 100644
--- a/core/modules/ckeditor/tests/modules/ckeditor_test.info.yml
+++ b/core/modules/ckeditor/tests/modules/ckeditor_test.info.yml
@@ -4,4 +4,3 @@ description: Support module for the CKEditor module tests.
 core: 8.x
 package: Testing
 version: VERSION
-hidden: TRUE
diff --git a/core/modules/color/tests/modules/color_test/color_test.info.yml b/core/modules/color/tests/modules/color_test/color_test.info.yml
index 7b31bef..05d954f 100644
--- a/core/modules/color/tests/modules/color_test/color_test.info.yml
+++ b/core/modules/color/tests/modules/color_test/color_test.info.yml
@@ -4,4 +4,3 @@ description: 'Provides test helpers for color module.'
 package: Testing
 version: VERSION
 core: 8.x
-hidden: true
diff --git a/core/modules/color/tests/modules/color_test/themes/color_test_theme/color_test_theme.info.yml b/core/modules/color/tests/modules/color_test/themes/color_test_theme/color_test_theme.info.yml
index 3ebd18e..01f8ffe 100644
--- a/core/modules/color/tests/modules/color_test/themes/color_test_theme/color_test_theme.info.yml
+++ b/core/modules/color/tests/modules/color_test/themes/color_test_theme/color_test_theme.info.yml
@@ -3,4 +3,3 @@ type: theme
 description: 'Theme for testing the color module'
 version: VERSION
 core: 8.x
-hidden: true
diff --git a/core/modules/comment/tests/modules/comment_test/comment_test.info.yml b/core/modules/comment/tests/modules/comment_test/comment_test.info.yml
index bde96fd..712037f 100644
--- a/core/modules/comment/tests/modules/comment_test/comment_test.info.yml
+++ b/core/modules/comment/tests/modules/comment_test/comment_test.info.yml
@@ -4,6 +4,5 @@ description: 'Support module for Comment module testing.'
 package: Testing
 version: VERSION
 core: 8.x
-hidden: true
 dependencies:
   - comment
diff --git a/core/modules/comment/tests/modules/comment_test_views/comment_test_views.info.yml b/core/modules/comment/tests/modules/comment_test_views/comment_test_views.info.yml
index c9703dc..dfce66d 100644
--- a/core/modules/comment/tests/modules/comment_test_views/comment_test_views.info.yml
+++ b/core/modules/comment/tests/modules/comment_test_views/comment_test_views.info.yml
@@ -7,4 +7,3 @@ core: 8.x
 dependencies:
   - comment
   - views
-hidden: true
diff --git a/core/modules/config/tests/config_events_test/config_events_test.info.yml b/core/modules/config/tests/config_events_test/config_events_test.info.yml
index 6cb7504..95c6799 100644
--- a/core/modules/config/tests/config_events_test/config_events_test.info.yml
+++ b/core/modules/config/tests/config_events_test/config_events_test.info.yml
@@ -3,4 +3,3 @@ type: module
 package: Testing
 version: VERSION
 core: 8.x
-hidden: true
diff --git a/core/modules/config/tests/config_integration_test/config_integration_test.info.yml b/core/modules/config/tests/config_integration_test/config_integration_test.info.yml
index dabbd7f..2c4caa1 100644
--- a/core/modules/config/tests/config_integration_test/config_integration_test.info.yml
+++ b/core/modules/config/tests/config_integration_test/config_integration_test.info.yml
@@ -3,6 +3,5 @@ type: module
 package: 'Testing'
 version: VERSION
 core: 8.x
-hidden: TRUE
 dependencies:
   - config_test
diff --git a/core/modules/config/tests/config_other_module_config/config_other_module_config.info.yml b/core/modules/config/tests/config_other_module_config/config_other_module_config.info.yml
index 0f78017..0c332c2 100644
--- a/core/modules/config/tests/config_other_module_config/config_other_module_config.info.yml
+++ b/core/modules/config/tests/config_other_module_config/config_other_module_config.info.yml
@@ -3,4 +3,3 @@ type: module
 package: Testing
 version: VERSION
 core: 8.x
-hidden: true
diff --git a/core/modules/config/tests/config_override/config_override.info.yml b/core/modules/config/tests/config_override/config_override.info.yml
index 1ccb50b..f1f1109 100644
--- a/core/modules/config/tests/config_override/config_override.info.yml
+++ b/core/modules/config/tests/config_override/config_override.info.yml
@@ -3,4 +3,3 @@ type: module
 package: Testing
 version: VERSION
 core: 8.x
-hidden: true
diff --git a/core/modules/config/tests/config_test/config_test.info.yml b/core/modules/config/tests/config_test/config_test.info.yml
index 0ce2c40..a4d7b0c 100644
--- a/core/modules/config/tests/config_test/config_test.info.yml
+++ b/core/modules/config/tests/config_test/config_test.info.yml
@@ -3,4 +3,3 @@ type: module
 package: Testing
 version: VERSION
 core: 8.x
-hidden: true
diff --git a/core/modules/config/tests/config_test_invalid_name/config_test_invalid_name.info.yml b/core/modules/config/tests/config_test_invalid_name/config_test_invalid_name.info.yml
index 8bf18bd..91ed0ae 100644
--- a/core/modules/config/tests/config_test_invalid_name/config_test_invalid_name.info.yml
+++ b/core/modules/config/tests/config_test_invalid_name/config_test_invalid_name.info.yml
@@ -3,4 +3,3 @@ type: module
 package: Core
 version: VERSION
 core: 8.x
-hidden: true
diff --git a/core/modules/config_translation/tests/modules/config_translation_test/config_translation_test.info.yml b/core/modules/config_translation/tests/modules/config_translation_test/config_translation_test.info.yml
index 47e5f1f..d9308c3 100644
--- a/core/modules/config_translation/tests/modules/config_translation_test/config_translation_test.info.yml
+++ b/core/modules/config_translation/tests/modules/config_translation_test/config_translation_test.info.yml
@@ -4,6 +4,5 @@ type: module
 package: Testing
 version: VERSION
 core: 8.x
-hidden: true
 dependencies:
   - config_test
diff --git a/core/modules/config_translation/tests/themes/config_translation_test_theme/config_translation_test_theme.info.yml b/core/modules/config_translation/tests/themes/config_translation_test_theme/config_translation_test_theme.info.yml
index 3b4d655..f46d8a0 100644
--- a/core/modules/config_translation/tests/themes/config_translation_test_theme/config_translation_test_theme.info.yml
+++ b/core/modules/config_translation/tests/themes/config_translation_test_theme/config_translation_test_theme.info.yml
@@ -3,4 +3,3 @@ type: theme
 description: 'Theme for testing the configuration translation mapper system'
 version: VERSION
 core: 8.x
-hidden: true
diff --git a/core/modules/contact/tests/modules/contact_test_views/contact_test_views.info.yml b/core/modules/contact/tests/modules/contact_test_views/contact_test_views.info.yml
index eb3b5e3..b30ad41 100644
--- a/core/modules/contact/tests/modules/contact_test_views/contact_test_views.info.yml
+++ b/core/modules/contact/tests/modules/contact_test_views/contact_test_views.info.yml
@@ -8,4 +8,3 @@ dependencies:
   - contact
   - views
   - user
-hidden: true
diff --git a/core/modules/content_translation/tests/modules/content_translation_test_views/content_translation_test_views.info.yml b/core/modules/content_translation/tests/modules/content_translation_test_views/content_translation_test_views.info.yml
index 9e261db..0e6574e 100644
--- a/core/modules/content_translation/tests/modules/content_translation_test_views/content_translation_test_views.info.yml
+++ b/core/modules/content_translation/tests/modules/content_translation_test_views/content_translation_test_views.info.yml
@@ -7,4 +7,3 @@ core: 8.x
 dependencies:
   - content_translation
   - views
-hidden: true
diff --git a/core/modules/dblog/tests/modules/dblog_test_views/dblog_test_views.info.yml b/core/modules/dblog/tests/modules/dblog_test_views/dblog_test_views.info.yml
index 08e6aa3..e020973 100644
--- a/core/modules/dblog/tests/modules/dblog_test_views/dblog_test_views.info.yml
+++ b/core/modules/dblog/tests/modules/dblog_test_views/dblog_test_views.info.yml
@@ -7,4 +7,3 @@ core: 8.x
 dependencies:
   - dblog
   - views
-hidden: TRUE
diff --git a/core/modules/edit/tests/modules/edit_test.info.yml b/core/modules/edit/tests/modules/edit_test.info.yml
index 5f6e406..0a178d4 100644
--- a/core/modules/edit/tests/modules/edit_test.info.yml
+++ b/core/modules/edit/tests/modules/edit_test.info.yml
@@ -4,4 +4,3 @@ description: 'Support module for the Edit module tests.'
 core: 8.x
 package: Testing
 version: VERSION
-hidden: true
diff --git a/core/modules/editor/tests/modules/editor_test.info.yml b/core/modules/editor/tests/modules/editor_test.info.yml
index 102ee02..40b6ff0 100644
--- a/core/modules/editor/tests/modules/editor_test.info.yml
+++ b/core/modules/editor/tests/modules/editor_test.info.yml
@@ -4,4 +4,3 @@ description: 'Support module for the Text Editor module tests.'
 core: 8.x
 package: Testing
 version: VERSION
-hidden: true
diff --git a/core/modules/entity_reference/tests/modules/entity_reference_test/entity_reference_test.info.yml b/core/modules/entity_reference/tests/modules/entity_reference_test/entity_reference_test.info.yml
index a2460d1..67a5f48 100644
--- a/core/modules/entity_reference/tests/modules/entity_reference_test/entity_reference_test.info.yml
+++ b/core/modules/entity_reference/tests/modules/entity_reference_test/entity_reference_test.info.yml
@@ -4,6 +4,5 @@ description: "Support module for the Entity Reference tests."
 core: 8.x
 package: Testing
 version: VERSION
-hidden: TRUE
 dependencies:
   - entity_reference
diff --git a/core/modules/field/tests/modules/field_test/field_test.info.yml b/core/modules/field/tests/modules/field_test/field_test.info.yml
index b05dab5..48bb2ae 100644
--- a/core/modules/field/tests/modules/field_test/field_test.info.yml
+++ b/core/modules/field/tests/modules/field_test/field_test.info.yml
@@ -4,4 +4,3 @@ description: 'Support module for the Field API tests.'
 core: 8.x
 package: Testing
 version: VERSION
-hidden: true
diff --git a/core/modules/field/tests/modules/field_test_config/field_test_config.info.yml b/core/modules/field/tests/modules/field_test_config/field_test_config.info.yml
index 3c8889a..e3cb0e8 100644
--- a/core/modules/field/tests/modules/field_test_config/field_test_config.info.yml
+++ b/core/modules/field/tests/modules/field_test_config/field_test_config.info.yml
@@ -4,4 +4,3 @@ description: 'Support module for the Field API configuration tests.'
 core: 8.x
 package: Testing
 version: VERSION
-hidden: TRUE
diff --git a/core/modules/field/tests/modules/field_test_views/field_test_views.info.yml b/core/modules/field/tests/modules/field_test_views/field_test_views.info.yml
index 2f22790..18287b6 100644
--- a/core/modules/field/tests/modules/field_test_views/field_test_views.info.yml
+++ b/core/modules/field/tests/modules/field_test_views/field_test_views.info.yml
@@ -6,4 +6,3 @@ version: VERSION
 core: 8.x
 dependencies:
   - views
-hidden: true
diff --git a/core/modules/field_ui/tests/modules/field_ui_test/field_ui_test.info.yml b/core/modules/field_ui/tests/modules/field_ui_test/field_ui_test.info.yml
index ff73701..b57d967 100644
--- a/core/modules/field_ui/tests/modules/field_ui_test/field_ui_test.info.yml
+++ b/core/modules/field_ui/tests/modules/field_ui_test/field_ui_test.info.yml
@@ -4,7 +4,6 @@ description: "Support module for Field UI testing."
 package: Testing
 version: VERSION
 core: 8.x
-hidden: true
 
 dependencies:
   - field_ui
diff --git a/core/modules/file/tests/file_module_test/file_module_test.info.yml b/core/modules/file/tests/file_module_test/file_module_test.info.yml
index 2f7e654..097b0a5 100644
--- a/core/modules/file/tests/file_module_test/file_module_test.info.yml
+++ b/core/modules/file/tests/file_module_test/file_module_test.info.yml
@@ -4,4 +4,3 @@ description: 'Provides hooks for testing File module functionality.'
 package: Testing
 version: VERSION
 core: 8.x
-hidden: true
diff --git a/core/modules/file/tests/file_test/file_test.info.yml b/core/modules/file/tests/file_test/file_test.info.yml
index 26cb51e..d5ebfdf 100644
--- a/core/modules/file/tests/file_test/file_test.info.yml
+++ b/core/modules/file/tests/file_test/file_test.info.yml
@@ -4,4 +4,3 @@ description: 'Support module for file handling tests.'
 package: Testing
 version: VERSION
 core: 8.x
-hidden: true
diff --git a/core/modules/file/tests/modules/file_test_views/file_test_views.info.yml b/core/modules/file/tests/modules/file_test_views/file_test_views.info.yml
index ff572d6..41726c7 100644
--- a/core/modules/file/tests/modules/file_test_views/file_test_views.info.yml
+++ b/core/modules/file/tests/modules/file_test_views/file_test_views.info.yml
@@ -7,4 +7,3 @@ core: 8.x
 dependencies:
   - file
   - views
-hidden: true
diff --git a/core/modules/filter/tests/filter_test/filter_test.info.yml b/core/modules/filter/tests/filter_test/filter_test.info.yml
index 4ccefb2..dcefe8e 100644
--- a/core/modules/filter/tests/filter_test/filter_test.info.yml
+++ b/core/modules/filter/tests/filter_test/filter_test.info.yml
@@ -4,4 +4,3 @@ description: 'Tests filter hooks and functions.'
 package: Testing
 version: VERSION
 core: 8.x
-hidden: true
diff --git a/core/modules/forum/tests/modules/forum_test_views/forum_test_views.info.yml b/core/modules/forum/tests/modules/forum_test_views/forum_test_views.info.yml
index 3b498b2..f31f030 100644
--- a/core/modules/forum/tests/modules/forum_test_views/forum_test_views.info.yml
+++ b/core/modules/forum/tests/modules/forum_test_views/forum_test_views.info.yml
@@ -7,4 +7,3 @@ core: 8.x
 dependencies:
   - forum
   - views
-hidden: true
diff --git a/core/modules/image/tests/modules/image_module_test/image_module_test.info.yml b/core/modules/image/tests/modules/image_module_test/image_module_test.info.yml
index d3671f8..9abaf47 100644
--- a/core/modules/image/tests/modules/image_module_test/image_module_test.info.yml
+++ b/core/modules/image/tests/modules/image_module_test/image_module_test.info.yml
@@ -4,4 +4,3 @@ description: 'Provides hook implementations for testing Image module functionali
 package: Core
 version: VERSION
 core: 8.x
-hidden: true
diff --git a/core/modules/language/tests/language_elements_test/language_elements_test.info.yml b/core/modules/language/tests/language_elements_test/language_elements_test.info.yml
index 254c5f6..d8a3da1 100644
--- a/core/modules/language/tests/language_elements_test/language_elements_test.info.yml
+++ b/core/modules/language/tests/language_elements_test/language_elements_test.info.yml
@@ -4,4 +4,3 @@ description: 'Support module for the language form elements tests.'
 core: 8.x
 package: Testing
 version: VERSION
-hidden: true
diff --git a/core/modules/language/tests/language_test/language_test.info.yml b/core/modules/language/tests/language_test/language_test.info.yml
index 8fc0512..03051cd 100644
--- a/core/modules/language/tests/language_test/language_test.info.yml
+++ b/core/modules/language/tests/language_test/language_test.info.yml
@@ -4,4 +4,3 @@ description: 'Support module for the language layer tests.'
 core: 8.x
 package: Testing
 version: VERSION
-hidden: true
diff --git a/core/modules/locale/tests/modules/locale_test/locale_test.info.yml b/core/modules/locale/tests/modules/locale_test/locale_test.info.yml
index ca4211d..c65b31b 100644
--- a/core/modules/locale/tests/modules/locale_test/locale_test.info.yml
+++ b/core/modules/locale/tests/modules/locale_test/locale_test.info.yml
@@ -4,6 +4,5 @@ description: 'Support module for locale module testing.'
 package: Testing
 version: '1.2'
 core: 8.x
-hidden: true
 'interface translation project': locale_test
 'interface translation server pattern': core/modules/locale/test/test.%language.po
diff --git a/core/modules/node/tests/modules/node_access_test/node_access_test.info.yml b/core/modules/node/tests/modules/node_access_test/node_access_test.info.yml
index e2c70c6..f63cdd6 100644
--- a/core/modules/node/tests/modules/node_access_test/node_access_test.info.yml
+++ b/core/modules/node/tests/modules/node_access_test/node_access_test.info.yml
@@ -4,4 +4,3 @@ description: 'Support module for node permission testing.'
 package: Testing
 version: VERSION
 core: 8.x
-hidden: true
diff --git a/core/modules/node/tests/modules/node_access_test_language/node_access_test_language.info.yml b/core/modules/node/tests/modules/node_access_test_language/node_access_test_language.info.yml
index 3e7ac88..64055ac 100644
--- a/core/modules/node/tests/modules/node_access_test_language/node_access_test_language.info.yml
+++ b/core/modules/node/tests/modules/node_access_test_language/node_access_test_language.info.yml
@@ -6,4 +6,3 @@ version: VERSION
 core: 8.x
 dependencies:
 - options
-hidden: true
diff --git a/core/modules/node/tests/modules/node_test/node_test.info.yml b/core/modules/node/tests/modules/node_test/node_test.info.yml
index 9daea15..952456f 100644
--- a/core/modules/node/tests/modules/node_test/node_test.info.yml
+++ b/core/modules/node/tests/modules/node_test/node_test.info.yml
@@ -4,4 +4,3 @@ description: 'Support module for node related testing.'
 package: Testing
 version: VERSION
 core: 8.x
-hidden: true
diff --git a/core/modules/node/tests/modules/node_test_config/node_test_config.info.yml b/core/modules/node/tests/modules/node_test_config/node_test_config.info.yml
index 948b4a5..c7e7665 100644
--- a/core/modules/node/tests/modules/node_test_config/node_test_config.info.yml
+++ b/core/modules/node/tests/modules/node_test_config/node_test_config.info.yml
@@ -4,4 +4,3 @@ description: 'Support module for node configuration tests.'
 core: 8.x
 package: Testing
 version: VERSION
-hidden: TRUE
diff --git a/core/modules/node/tests/modules/node_test_exception/node_test_exception.info.yml b/core/modules/node/tests/modules/node_test_exception/node_test_exception.info.yml
index a9ccbfe..fac3fe7 100644
--- a/core/modules/node/tests/modules/node_test_exception/node_test_exception.info.yml
+++ b/core/modules/node/tests/modules/node_test_exception/node_test_exception.info.yml
@@ -4,4 +4,3 @@ description: 'Support module for node related exception testing.'
 package: Testing
 version: VERSION
 core: 8.x
-hidden: true
diff --git a/core/modules/node/tests/modules/node_test_views/node_test_views.info.yml b/core/modules/node/tests/modules/node_test_views/node_test_views.info.yml
index 1e0aa16..194168f 100644
--- a/core/modules/node/tests/modules/node_test_views/node_test_views.info.yml
+++ b/core/modules/node/tests/modules/node_test_views/node_test_views.info.yml
@@ -7,4 +7,3 @@ core: 8.x
 dependencies:
   - node
   - views
-hidden: true
diff --git a/core/modules/options/tests/options_test.info.yml b/core/modules/options/tests/options_test.info.yml
index 6826952..add43a4 100644
--- a/core/modules/options/tests/options_test.info.yml
+++ b/core/modules/options/tests/options_test.info.yml
@@ -4,4 +4,3 @@ description: 'Support module for the Options module tests.'
 core: 8.x
 package: Testing
 version: VERSION
-hidden: true
diff --git a/core/modules/rdf/tests/rdf_conflicting_namespaces/rdf_conflicting_namespaces.info.yml b/core/modules/rdf/tests/rdf_conflicting_namespaces/rdf_conflicting_namespaces.info.yml
index 33a5cd9..65d06db 100644
--- a/core/modules/rdf/tests/rdf_conflicting_namespaces/rdf_conflicting_namespaces.info.yml
+++ b/core/modules/rdf/tests/rdf_conflicting_namespaces/rdf_conflicting_namespaces.info.yml
@@ -4,6 +4,5 @@ description: 'Test conflicting namespace declaration.'
 package: Testing
 version: VERSION
 core: 8.x
-hidden: true
 dependencies:
   - rdf
diff --git a/core/modules/rdf/tests/rdf_test_namespaces/rdf_test_namespaces.info.yml b/core/modules/rdf/tests/rdf_test_namespaces/rdf_test_namespaces.info.yml
index 7ace964..84cd974 100644
--- a/core/modules/rdf/tests/rdf_test_namespaces/rdf_test_namespaces.info.yml
+++ b/core/modules/rdf/tests/rdf_test_namespaces/rdf_test_namespaces.info.yml
@@ -4,6 +4,5 @@ description: 'Test namespace declaration.'
 package: Testing
 version: VERSION
 core: 8.x
-hidden: true
 dependencies:
   - rdf
diff --git a/core/modules/rest/tests/modules/rest_test_views/rest_test_views.info.yml b/core/modules/rest/tests/modules/rest_test_views/rest_test_views.info.yml
index debc5e2..662ad1b 100644
--- a/core/modules/rest/tests/modules/rest_test_views/rest_test_views.info.yml
+++ b/core/modules/rest/tests/modules/rest_test_views/rest_test_views.info.yml
@@ -7,4 +7,3 @@ core: 8.x
 dependencies:
   - rest
   - views
-hidden: true
diff --git a/core/modules/search/tests/modules/search_embedded_form/search_embedded_form.info.yml b/core/modules/search/tests/modules/search_embedded_form/search_embedded_form.info.yml
index 9c17197..0df41aa 100644
--- a/core/modules/search/tests/modules/search_embedded_form/search_embedded_form.info.yml
+++ b/core/modules/search/tests/modules/search_embedded_form/search_embedded_form.info.yml
@@ -4,4 +4,3 @@ description: 'Support module for Search module testing of embedded forms.'
 package: Testing
 version: VERSION
 core: 8.x
-hidden: true
diff --git a/core/modules/search/tests/modules/search_extra_type/search_extra_type.info.yml b/core/modules/search/tests/modules/search_extra_type/search_extra_type.info.yml
index 21a99cf..caea321 100644
--- a/core/modules/search/tests/modules/search_extra_type/search_extra_type.info.yml
+++ b/core/modules/search/tests/modules/search_extra_type/search_extra_type.info.yml
@@ -4,4 +4,3 @@ description: 'Support module for Search module testing.'
 package: Testing
 version: VERSION
 core: 8.x
-hidden: true
diff --git a/core/modules/search/tests/modules/search_langcode_test/search_langcode_test.info.yml b/core/modules/search/tests/modules/search_langcode_test/search_langcode_test.info.yml
index 53d0a4b..da34c5f 100644
--- a/core/modules/search/tests/modules/search_langcode_test/search_langcode_test.info.yml
+++ b/core/modules/search/tests/modules/search_langcode_test/search_langcode_test.info.yml
@@ -4,4 +4,3 @@ description: 'Support module for search module testing.'
 package: Testing
 version: VERSION
 core: 8.x
-hidden: true
diff --git a/core/modules/serialization/tests/serialization_test/serialization_test.info.yml b/core/modules/serialization/tests/serialization_test/serialization_test.info.yml
index be64412..d6c0130 100644
--- a/core/modules/serialization/tests/serialization_test/serialization_test.info.yml
+++ b/core/modules/serialization/tests/serialization_test/serialization_test.info.yml
@@ -4,4 +4,3 @@ description: "Support module for serialization tests."
 package: Testing
 version: VERSION
 core: 8.x
-hidden: TRUE
diff --git a/core/modules/simpletest/tests/modules/phpunit_test/phpunit_test.info.yml b/core/modules/simpletest/tests/modules/phpunit_test/phpunit_test.info.yml
index 0fd89ae..e0a4c6e 100644
--- a/core/modules/simpletest/tests/modules/phpunit_test/phpunit_test.info.yml
+++ b/core/modules/simpletest/tests/modules/phpunit_test/phpunit_test.info.yml
@@ -4,4 +4,3 @@ description: 'Provides dummy classes for use by SimpleTest tests.'
 package: Testing
 version: VERSION
 core: 8.x
-hidden: TRUE
diff --git a/core/modules/statistics/tests/modules/statistics_test_views/statistics_test_views.info.yml b/core/modules/statistics/tests/modules/statistics_test_views/statistics_test_views.info.yml
index aff5a56..df9a43a 100644
--- a/core/modules/statistics/tests/modules/statistics_test_views/statistics_test_views.info.yml
+++ b/core/modules/statistics/tests/modules/statistics_test_views/statistics_test_views.info.yml
@@ -4,7 +4,6 @@ description: 'Provides default views for views statistics tests.'
 package: Testing
 version: VERSION
 core: 8.x
-hidden: TRUE
 dependencies:
   - statistics
   - views
diff --git a/core/modules/system/tests/modules/action_test/action_test.info.yml b/core/modules/system/tests/modules/action_test/action_test.info.yml
index c639b27..7cefe06 100644
--- a/core/modules/system/tests/modules/action_test/action_test.info.yml
+++ b/core/modules/system/tests/modules/action_test/action_test.info.yml
@@ -4,4 +4,3 @@ description: 'Support module for action testing.'
 package: Testing
 version: VERSION
 core: 8.x
-hidden: true
diff --git a/core/modules/system/tests/modules/ajax_forms_test/ajax_forms_test.info.yml b/core/modules/system/tests/modules/ajax_forms_test/ajax_forms_test.info.yml
index 054ebff..ba31a29 100644
--- a/core/modules/system/tests/modules/ajax_forms_test/ajax_forms_test.info.yml
+++ b/core/modules/system/tests/modules/ajax_forms_test/ajax_forms_test.info.yml
@@ -4,4 +4,3 @@ description: 'Test for AJAX form calls.'
 core: 8.x
 package: Testing
 version: VERSION
-hidden: true
diff --git a/core/modules/system/tests/modules/ajax_test/ajax_test.info.yml b/core/modules/system/tests/modules/ajax_test/ajax_test.info.yml
index 153eee9..f151748 100644
--- a/core/modules/system/tests/modules/ajax_test/ajax_test.info.yml
+++ b/core/modules/system/tests/modules/ajax_test/ajax_test.info.yml
@@ -6,4 +6,3 @@ version: VERSION
 core: 8.x
 dependencies:
   - contact
-hidden: true
diff --git a/core/modules/system/tests/modules/batch_test/batch_test.info.yml b/core/modules/system/tests/modules/batch_test/batch_test.info.yml
index b45766d..072017e 100644
--- a/core/modules/system/tests/modules/batch_test/batch_test.info.yml
+++ b/core/modules/system/tests/modules/batch_test/batch_test.info.yml
@@ -4,4 +4,3 @@ description: 'Support module for Batch API tests.'
 package: Testing
 version: VERSION
 core: 8.x
-hidden: true
diff --git a/core/modules/system/tests/modules/cache_test/cache_test.info.yml b/core/modules/system/tests/modules/cache_test/cache_test.info.yml
index b191556..329e0d6 100644
--- a/core/modules/system/tests/modules/cache_test/cache_test.info.yml
+++ b/core/modules/system/tests/modules/cache_test/cache_test.info.yml
@@ -4,4 +4,3 @@ description: 'Support module for cache system testing.'
 package: Testing
 version: VERSION
 core: 8.x
-hidden: true
diff --git a/core/modules/system/tests/modules/common_test/common_test.info.yml b/core/modules/system/tests/modules/common_test/common_test.info.yml
index 1a0bc0c..2efb155 100644
--- a/core/modules/system/tests/modules/common_test/common_test.info.yml
+++ b/core/modules/system/tests/modules/common_test/common_test.info.yml
@@ -4,4 +4,3 @@ description: 'Support module for Common tests.'
 package: Testing
 version: VERSION
 core: 8.x
-hidden: true
diff --git a/core/modules/system/tests/modules/common_test_cron_helper/common_test_cron_helper.info.yml b/core/modules/system/tests/modules/common_test_cron_helper/common_test_cron_helper.info.yml
index ee46ca8..5d1ab7f 100644
--- a/core/modules/system/tests/modules/common_test_cron_helper/common_test_cron_helper.info.yml
+++ b/core/modules/system/tests/modules/common_test_cron_helper/common_test_cron_helper.info.yml
@@ -4,4 +4,3 @@ description: 'Helper module for CronRunTestCase::testCronExceptions().'
 package: Testing
 version: VERSION
 core: 8.x
-hidden: true
diff --git a/core/modules/system/tests/modules/condition_test/condition_test.info.yml b/core/modules/system/tests/modules/condition_test/condition_test.info.yml
index e51633b..b664502 100644
--- a/core/modules/system/tests/modules/condition_test/condition_test.info.yml
+++ b/core/modules/system/tests/modules/condition_test/condition_test.info.yml
@@ -4,4 +4,3 @@ description: "Test general form component for condition plugins."
 package: Testing
 version: VERSION
 core: 8.x
-hidden: TRUE
diff --git a/core/modules/system/tests/modules/cron_queue_test/cron_queue_test.info.yml b/core/modules/system/tests/modules/cron_queue_test/cron_queue_test.info.yml
index 2d6dfa3..014e918 100644
--- a/core/modules/system/tests/modules/cron_queue_test/cron_queue_test.info.yml
+++ b/core/modules/system/tests/modules/cron_queue_test/cron_queue_test.info.yml
@@ -4,4 +4,3 @@ description: 'Support module for the cron queue runner.'
 package: Testing
 version: VERSION
 core: 8.x
-hidden: true
diff --git a/core/modules/system/tests/modules/database_test/database_test.info.yml b/core/modules/system/tests/modules/database_test/database_test.info.yml
index 914ba1f..92cea84 100644
--- a/core/modules/system/tests/modules/database_test/database_test.info.yml
+++ b/core/modules/system/tests/modules/database_test/database_test.info.yml
@@ -4,4 +4,3 @@ description: 'Support module for Database layer tests.'
 core: 8.x
 package: Testing
 version: VERSION
-hidden: true
diff --git a/core/modules/system/tests/modules/drupal_system_listing_compatible_test/drupal_system_listing_compatible_test.info.yml b/core/modules/system/tests/modules/drupal_system_listing_compatible_test/drupal_system_listing_compatible_test.info.yml
index c419771..30bccf7 100644
--- a/core/modules/system/tests/modules/drupal_system_listing_compatible_test/drupal_system_listing_compatible_test.info.yml
+++ b/core/modules/system/tests/modules/drupal_system_listing_compatible_test/drupal_system_listing_compatible_test.info.yml
@@ -4,4 +4,3 @@ description: 'Support module for testing the drupal_system_listing function.'
 package: Testing
 version: VERSION
 core: 8.x
-hidden: true
diff --git a/core/modules/system/tests/modules/drupal_system_listing_incompatible_test/drupal_system_listing_incompatible_test.info.yml b/core/modules/system/tests/modules/drupal_system_listing_incompatible_test/drupal_system_listing_incompatible_test.info.yml
index 0515956..a04828b 100644
--- a/core/modules/system/tests/modules/drupal_system_listing_incompatible_test/drupal_system_listing_incompatible_test.info.yml
+++ b/core/modules/system/tests/modules/drupal_system_listing_incompatible_test/drupal_system_listing_incompatible_test.info.yml
@@ -4,4 +4,3 @@ description: 'Support module for testing the drupal_system_listing function.'
 package: Testing
 version: VERSION
 core: 8.x
-hidden: true
diff --git a/core/modules/system/tests/modules/entity_cache_test/entity_cache_test.info.yml b/core/modules/system/tests/modules/entity_cache_test/entity_cache_test.info.yml
index e87d44f..fa4c0fe 100644
--- a/core/modules/system/tests/modules/entity_cache_test/entity_cache_test.info.yml
+++ b/core/modules/system/tests/modules/entity_cache_test/entity_cache_test.info.yml
@@ -6,4 +6,3 @@ version: VERSION
 core: 8.x
 dependencies:
   - entity_cache_test_dependency
-hidden: true
diff --git a/core/modules/system/tests/modules/entity_cache_test_dependency/entity_cache_test_dependency.info.yml b/core/modules/system/tests/modules/entity_cache_test_dependency/entity_cache_test_dependency.info.yml
index 6adf6e3..282fcb7 100644
--- a/core/modules/system/tests/modules/entity_cache_test_dependency/entity_cache_test_dependency.info.yml
+++ b/core/modules/system/tests/modules/entity_cache_test_dependency/entity_cache_test_dependency.info.yml
@@ -4,4 +4,3 @@ description: 'Support dependency module for testing entity cache.'
 package: Testing
 version: VERSION
 core: 8.x
-hidden: true
diff --git a/core/modules/system/tests/modules/entity_crud_hook_test/entity_crud_hook_test.info.yml b/core/modules/system/tests/modules/entity_crud_hook_test/entity_crud_hook_test.info.yml
index c46c26b..7d35503 100644
--- a/core/modules/system/tests/modules/entity_crud_hook_test/entity_crud_hook_test.info.yml
+++ b/core/modules/system/tests/modules/entity_crud_hook_test/entity_crud_hook_test.info.yml
@@ -4,4 +4,3 @@ description: 'Support module for CRUD hook tests.'
 core: 8.x
 package: Testing
 version: VERSION
-hidden: true
diff --git a/core/modules/system/tests/modules/entity_test/entity_test.info.yml b/core/modules/system/tests/modules/entity_test/entity_test.info.yml
index 5bea26a..bd4382e 100644
--- a/core/modules/system/tests/modules/entity_test/entity_test.info.yml
+++ b/core/modules/system/tests/modules/entity_test/entity_test.info.yml
@@ -7,4 +7,3 @@ core: 8.x
 dependencies:
   - field
   - text
-hidden: true
diff --git a/core/modules/system/tests/modules/error_test/error_test.info.yml b/core/modules/system/tests/modules/error_test/error_test.info.yml
index 1b49c4f..f91c7b3 100644
--- a/core/modules/system/tests/modules/error_test/error_test.info.yml
+++ b/core/modules/system/tests/modules/error_test/error_test.info.yml
@@ -4,4 +4,3 @@ description: 'Support module for error and exception testing.'
 package: Testing
 version: VERSION
 core: 8.x
-hidden: true
diff --git a/core/modules/system/tests/modules/form_test/form_test.info.yml b/core/modules/system/tests/modules/form_test/form_test.info.yml
index 3d4280e..39d45ea 100644
--- a/core/modules/system/tests/modules/form_test/form_test.info.yml
+++ b/core/modules/system/tests/modules/form_test/form_test.info.yml
@@ -4,4 +4,3 @@ description: 'Support module for Form API tests.'
 package: Testing
 version: VERSION
 core: 8.x
-hidden: true
diff --git a/core/modules/system/tests/modules/image_test/image_test.info.yml b/core/modules/system/tests/modules/image_test/image_test.info.yml
index e3ed9c5..2e54287 100644
--- a/core/modules/system/tests/modules/image_test/image_test.info.yml
+++ b/core/modules/system/tests/modules/image_test/image_test.info.yml
@@ -4,4 +4,3 @@ description: 'Support module for image toolkit tests.'
 package: Testing
 version: VERSION
 core: 8.x
-hidden: true
diff --git a/core/modules/system/tests/modules/invalid_module_name_over_the_maximum_allowed_character_length/invalid_module_name_over_the_maximum_allowed_character_length.info.yml b/core/modules/system/tests/modules/invalid_module_name_over_the_maximum_allowed_character_length/invalid_module_name_over_the_maximum_allowed_character_length.info.yml
index 16d9c78..db5cdcc 100644
--- a/core/modules/system/tests/modules/invalid_module_name_over_the_maximum_allowed_character_length/invalid_module_name_over_the_maximum_allowed_character_length.info.yml
+++ b/core/modules/system/tests/modules/invalid_module_name_over_the_maximum_allowed_character_length/invalid_module_name_over_the_maximum_allowed_character_length.info.yml
@@ -4,4 +4,3 @@ description: 'Test module with a name over the maximum allowed characters.'
 package: Testing
 version: VERSION
 core: 8.x
-hidden: TRUE
diff --git a/core/modules/system/tests/modules/menu_test/menu_test.info.yml b/core/modules/system/tests/modules/menu_test/menu_test.info.yml
index cce904b..f9620cd 100644
--- a/core/modules/system/tests/modules/menu_test/menu_test.info.yml
+++ b/core/modules/system/tests/modules/menu_test/menu_test.info.yml
@@ -4,7 +4,6 @@ description: 'Support module for menu hook testing.'
 package: Testing
 version: VERSION
 core: 8.x
-hidden: true
 dependencies:
   - test_page_test
   - menu
diff --git a/core/modules/system/tests/modules/module_autoload_test/module_autoload_test.info.yml b/core/modules/system/tests/modules/module_autoload_test/module_autoload_test.info.yml
index 4437ef6..1805185 100644
--- a/core/modules/system/tests/modules/module_autoload_test/module_autoload_test.info.yml
+++ b/core/modules/system/tests/modules/module_autoload_test/module_autoload_test.info.yml
@@ -4,4 +4,3 @@ description: 'Support module for module system tests.'
 package: Testing
 version: VERSION
 core: 8.x
-hidden: true
diff --git a/core/modules/system/tests/modules/module_test/module_test.info.yml b/core/modules/system/tests/modules/module_test/module_test.info.yml
index 390706d..025525c 100644
--- a/core/modules/system/tests/modules/module_test/module_test.info.yml
+++ b/core/modules/system/tests/modules/module_test/module_test.info.yml
@@ -4,7 +4,6 @@ description: 'Support module for module system testing.'
 package: Testing
 version: VERSION
 core: 8.x
-hidden: true
 # Depends on the Node module to test making a module required using
 # hook_system_info_alter() and ensuring that its dependencies also become
 # required.
diff --git a/core/modules/system/tests/modules/paramconverter_test/paramconverter_test.info.yml b/core/modules/system/tests/modules/paramconverter_test/paramconverter_test.info.yml
index 4aa2455..1953d92 100644
--- a/core/modules/system/tests/modules/paramconverter_test/paramconverter_test.info.yml
+++ b/core/modules/system/tests/modules/paramconverter_test/paramconverter_test.info.yml
@@ -4,4 +4,3 @@ description: "Support module for paramconverter testing."
 package: Testing
 version: VERSION
 core: 8.x
-hidden: TRUE
diff --git a/core/modules/system/tests/modules/path_test/path_test.info.yml b/core/modules/system/tests/modules/path_test/path_test.info.yml
index 57a5893..ec7e405 100644
--- a/core/modules/system/tests/modules/path_test/path_test.info.yml
+++ b/core/modules/system/tests/modules/path_test/path_test.info.yml
@@ -4,4 +4,3 @@ description: 'Support module for path hook testing.'
 package: Testing
 version: VERSION
 core: 8.x
-hidden: true
diff --git a/core/modules/system/tests/modules/plugin_test/plugin_test.info.yml b/core/modules/system/tests/modules/plugin_test/plugin_test.info.yml
index 087ce08..950a1d0 100644
--- a/core/modules/system/tests/modules/plugin_test/plugin_test.info.yml
+++ b/core/modules/system/tests/modules/plugin_test/plugin_test.info.yml
@@ -4,4 +4,3 @@ description: 'Test that plugins can provide plugins and provide namespace discov
 package: Testing
 version: VERSION
 core: 8.x
-hidden: true
diff --git a/core/modules/system/tests/modules/requirements1_test/requirements1_test.info.yml b/core/modules/system/tests/modules/requirements1_test/requirements1_test.info.yml
index 789cf27..6288bf3 100644
--- a/core/modules/system/tests/modules/requirements1_test/requirements1_test.info.yml
+++ b/core/modules/system/tests/modules/requirements1_test/requirements1_test.info.yml
@@ -4,4 +4,3 @@ description: 'Tests that a module is not installed when it fails hook_requiremen
 package: Testing
 version: VERSION
 core: 8.x
-hidden: true
diff --git a/core/modules/system/tests/modules/requirements2_test/requirements2_test.info.yml b/core/modules/system/tests/modules/requirements2_test/requirements2_test.info.yml
index ed093d8..670df80 100644
--- a/core/modules/system/tests/modules/requirements2_test/requirements2_test.info.yml
+++ b/core/modules/system/tests/modules/requirements2_test/requirements2_test.info.yml
@@ -7,4 +7,3 @@ dependencies:
 package: Testing
 version: VERSION
 core: 8.x
-hidden: true
diff --git a/core/modules/system/tests/modules/router_test_directory/router_test.info.yml b/core/modules/system/tests/modules/router_test_directory/router_test.info.yml
index 915f0ff..27a0827 100644
--- a/core/modules/system/tests/modules/router_test_directory/router_test.info.yml
+++ b/core/modules/system/tests/modules/router_test_directory/router_test.info.yml
@@ -4,4 +4,3 @@ description: 'Support module for routing testing. In a directory that does not m
 package: Testing
 version: VERSION
 core: 8.x
-hidden: true
diff --git a/core/modules/system/tests/modules/service_provider_test/service_provider_test.info.yml b/core/modules/system/tests/modules/service_provider_test/service_provider_test.info.yml
index 620c897..ba84020 100644
--- a/core/modules/system/tests/modules/service_provider_test/service_provider_test.info.yml
+++ b/core/modules/system/tests/modules/service_provider_test/service_provider_test.info.yml
@@ -4,4 +4,3 @@ description: 'Support module for service provider testing.'
 package: Testing
 version: VERSION
 core: 8.x
-hidden: true
diff --git a/core/modules/system/tests/modules/session_test/session_test.info.yml b/core/modules/system/tests/modules/session_test/session_test.info.yml
index 9e80a1c..b9abfef 100644
--- a/core/modules/system/tests/modules/session_test/session_test.info.yml
+++ b/core/modules/system/tests/modules/session_test/session_test.info.yml
@@ -4,4 +4,3 @@ description: 'Support module for session data testing.'
 package: Testing
 version: VERSION
 core: 8.x
-hidden: true
diff --git a/core/modules/system/tests/modules/system_dependencies_test/system_dependencies_test.info.yml b/core/modules/system/tests/modules/system_dependencies_test/system_dependencies_test.info.yml
index e3ac2dc..e99d48e 100644
--- a/core/modules/system/tests/modules/system_dependencies_test/system_dependencies_test.info.yml
+++ b/core/modules/system/tests/modules/system_dependencies_test/system_dependencies_test.info.yml
@@ -4,6 +4,5 @@ description: 'Support module for testing system dependencies.'
 package: Testing
 version: VERSION
 core: 8.x
-hidden: true
 dependencies:
   - _missing_dependency
diff --git a/core/modules/system/tests/modules/system_incompatible_core_version_dependencies_test/system_incompatible_core_version_dependencies_test.info.yml b/core/modules/system/tests/modules/system_incompatible_core_version_dependencies_test/system_incompatible_core_version_dependencies_test.info.yml
index 4f6a8c0..148bd3b 100644
--- a/core/modules/system/tests/modules/system_incompatible_core_version_dependencies_test/system_incompatible_core_version_dependencies_test.info.yml
+++ b/core/modules/system/tests/modules/system_incompatible_core_version_dependencies_test/system_incompatible_core_version_dependencies_test.info.yml
@@ -4,6 +4,5 @@ description: 'Support module for testing system dependencies.'
 package: Testing
 version: VERSION
 core: 8.x
-hidden: true
 dependencies:
   - system_incompatible_core_version_test
diff --git a/core/modules/system/tests/modules/system_incompatible_core_version_test/system_incompatible_core_version_test.info.yml b/core/modules/system/tests/modules/system_incompatible_core_version_test/system_incompatible_core_version_test.info.yml
index 47dce2b..d99300b 100644
--- a/core/modules/system/tests/modules/system_incompatible_core_version_test/system_incompatible_core_version_test.info.yml
+++ b/core/modules/system/tests/modules/system_incompatible_core_version_test/system_incompatible_core_version_test.info.yml
@@ -4,4 +4,3 @@ description: 'Support module for testing system dependencies.'
 package: Testing
 version: VERSION
 core: 5.x
-hidden: true
diff --git a/core/modules/system/tests/modules/system_incompatible_module_version_dependencies_test/system_incompatible_module_version_dependencies_test.info.yml b/core/modules/system/tests/modules/system_incompatible_module_version_dependencies_test/system_incompatible_module_version_dependencies_test.info.yml
index 244235f..55e004b 100644
--- a/core/modules/system/tests/modules/system_incompatible_module_version_dependencies_test/system_incompatible_module_version_dependencies_test.info.yml
+++ b/core/modules/system/tests/modules/system_incompatible_module_version_dependencies_test/system_incompatible_module_version_dependencies_test.info.yml
@@ -4,6 +4,5 @@ description: 'Support module for testing system dependencies.'
 package: Testing
 version: VERSION
 core: 8.x
-hidden: true
 dependencies:
   - 'system_incompatible_module_version_test (>2.0)'
diff --git a/core/modules/system/tests/modules/system_incompatible_module_version_test/system_incompatible_module_version_test.info.yml b/core/modules/system/tests/modules/system_incompatible_module_version_test/system_incompatible_module_version_test.info.yml
index 78c1a90..f0076b1 100644
--- a/core/modules/system/tests/modules/system_incompatible_module_version_test/system_incompatible_module_version_test.info.yml
+++ b/core/modules/system/tests/modules/system_incompatible_module_version_test/system_incompatible_module_version_test.info.yml
@@ -4,4 +4,3 @@ description: 'Support module for testing system dependencies.'
 package: Testing
 version: '1.0'
 core: 8.x
-hidden: true
diff --git a/core/modules/system/tests/modules/system_mail_failure_test/system_mail_failure_test.info.yml b/core/modules/system/tests/modules/system_mail_failure_test/system_mail_failure_test.info.yml
index 3561097..12ad6e2 100644
--- a/core/modules/system/tests/modules/system_mail_failure_test/system_mail_failure_test.info.yml
+++ b/core/modules/system/tests/modules/system_mail_failure_test/system_mail_failure_test.info.yml
@@ -4,4 +4,3 @@ description: 'Provides a malfunctioning mail service for testing purposes.'
 package: Testing
 version: VERSION
 core: 8.x
-hidden: true
diff --git a/core/modules/system/tests/modules/system_module_test/system_module_test.info.yml b/core/modules/system/tests/modules/system_module_test/system_module_test.info.yml
index c4403d3..6b787f5 100644
--- a/core/modules/system/tests/modules/system_module_test/system_module_test.info.yml
+++ b/core/modules/system/tests/modules/system_module_test/system_module_test.info.yml
@@ -4,4 +4,3 @@ description: 'Provides hook implementations for testing System module functional
 package: Testing
 version: VERSION
 core: 8.x
-hidden: true
diff --git a/core/modules/system/tests/modules/system_test/system_test.info.yml b/core/modules/system/tests/modules/system_test/system_test.info.yml
index d5b65e9..e3c9eb2 100644
--- a/core/modules/system/tests/modules/system_test/system_test.info.yml
+++ b/core/modules/system/tests/modules/system_test/system_test.info.yml
@@ -4,4 +4,3 @@ description: 'Support module for system testing.'
 package: Testing
 version: VERSION
 core: 8.x
-hidden: true
diff --git a/core/modules/system/tests/modules/test_page_test/test_page_test.info.yml b/core/modules/system/tests/modules/test_page_test/test_page_test.info.yml
index 053deb2..f01c597 100644
--- a/core/modules/system/tests/modules/test_page_test/test_page_test.info.yml
+++ b/core/modules/system/tests/modules/test_page_test/test_page_test.info.yml
@@ -4,4 +4,3 @@ description: 'Provides a test page for automated tests.'
 package: Testing
 version: VERSION
 core: 8.x
-hidden: true
diff --git a/core/modules/system/tests/modules/theme_page_test/theme_page_test.info.yml b/core/modules/system/tests/modules/theme_page_test/theme_page_test.info.yml
index 587e8a1..da50bb1 100644
--- a/core/modules/system/tests/modules/theme_page_test/theme_page_test.info.yml
+++ b/core/modules/system/tests/modules/theme_page_test/theme_page_test.info.yml
@@ -4,4 +4,3 @@ description: 'Support module for theme system testing.'
 package: Testing
 version: VERSION
 core: 8.x
-hidden: true
diff --git a/core/modules/system/tests/modules/theme_suggestions_test/theme_suggestions_test.info.yml b/core/modules/system/tests/modules/theme_suggestions_test/theme_suggestions_test.info.yml
index 95f429f..fe61d0d 100644
--- a/core/modules/system/tests/modules/theme_suggestions_test/theme_suggestions_test.info.yml
+++ b/core/modules/system/tests/modules/theme_suggestions_test/theme_suggestions_test.info.yml
@@ -4,4 +4,3 @@ description: 'Support module for testing theme suggestions.'
 package: Testing
 version: VERSION
 core: 8.x
-hidden: true
diff --git a/core/modules/system/tests/modules/theme_test/theme_test.info.yml b/core/modules/system/tests/modules/theme_test/theme_test.info.yml
index 863e112..0fe8c10 100644
--- a/core/modules/system/tests/modules/theme_test/theme_test.info.yml
+++ b/core/modules/system/tests/modules/theme_test/theme_test.info.yml
@@ -4,4 +4,3 @@ description: 'Support module for theme system testing.'
 package: Testing
 version: VERSION
 core: 8.x
-hidden: true
diff --git a/core/modules/system/tests/modules/transliterate_test/transliterate_test.info.yml b/core/modules/system/tests/modules/transliterate_test/transliterate_test.info.yml
index 15a724e..9eeddd5 100644
--- a/core/modules/system/tests/modules/transliterate_test/transliterate_test.info.yml
+++ b/core/modules/system/tests/modules/transliterate_test/transliterate_test.info.yml
@@ -4,4 +4,3 @@ description: 'Helper module for Transliteration system tests.'
 package: Testing
 version: VERSION
 core: 8.x
-hidden: true
diff --git a/core/modules/system/tests/modules/twig_extension_test/twig_extension_test.info.yml b/core/modules/system/tests/modules/twig_extension_test/twig_extension_test.info.yml
index 270352f..5aee1e2 100644
--- a/core/modules/system/tests/modules/twig_extension_test/twig_extension_test.info.yml
+++ b/core/modules/system/tests/modules/twig_extension_test/twig_extension_test.info.yml
@@ -4,4 +4,3 @@ description: 'Support module for testing Twig extensions.'
 package: Testing
 version: VERSION
 core: 8.x
-hidden: true
diff --git a/core/modules/system/tests/modules/twig_theme_test/modules/twig_namespace_a/twig_namespace_a.info.yml b/core/modules/system/tests/modules/twig_theme_test/modules/twig_namespace_a/twig_namespace_a.info.yml
index d007f21..7584b57 100644
--- a/core/modules/system/tests/modules/twig_theme_test/modules/twig_namespace_a/twig_namespace_a.info.yml
+++ b/core/modules/system/tests/modules/twig_theme_test/modules/twig_namespace_a/twig_namespace_a.info.yml
@@ -4,4 +4,3 @@ description: 'Support module for Twig namespace testing.'
 package: Testing
 version: VERSION
 core: 8.x
-hidden: true
diff --git a/core/modules/system/tests/modules/twig_theme_test/modules/twig_namespace_b/twig_namespace_b.info.yml b/core/modules/system/tests/modules/twig_theme_test/modules/twig_namespace_b/twig_namespace_b.info.yml
index d007f21..7584b57 100644
--- a/core/modules/system/tests/modules/twig_theme_test/modules/twig_namespace_b/twig_namespace_b.info.yml
+++ b/core/modules/system/tests/modules/twig_theme_test/modules/twig_namespace_b/twig_namespace_b.info.yml
@@ -4,4 +4,3 @@ description: 'Support module for Twig namespace testing.'
 package: Testing
 version: VERSION
 core: 8.x
-hidden: true
diff --git a/core/modules/system/tests/modules/twig_theme_test/twig_theme_test.info.yml b/core/modules/system/tests/modules/twig_theme_test/twig_theme_test.info.yml
index f340341..7515315 100644
--- a/core/modules/system/tests/modules/twig_theme_test/twig_theme_test.info.yml
+++ b/core/modules/system/tests/modules/twig_theme_test/twig_theme_test.info.yml
@@ -4,4 +4,3 @@ description: 'Support module for Twig theme system testing.'
 package: Testing
 version: VERSION
 core: 8.x
-hidden: true
diff --git a/core/modules/system/tests/modules/update_script_test/update_script_test.info.yml b/core/modules/system/tests/modules/update_script_test/update_script_test.info.yml
index cd04f16..b582c1a 100644
--- a/core/modules/system/tests/modules/update_script_test/update_script_test.info.yml
+++ b/core/modules/system/tests/modules/update_script_test/update_script_test.info.yml
@@ -4,4 +4,3 @@ description: 'Support module for update script testing.'
 package: Testing
 version: VERSION
 core: 8.x
-hidden: true
diff --git a/core/modules/system/tests/modules/update_test_0/update_test_0.info.yml b/core/modules/system/tests/modules/update_test_0/update_test_0.info.yml
index d9f07cd..4162fd0 100644
--- a/core/modules/system/tests/modules/update_test_0/update_test_0.info.yml
+++ b/core/modules/system/tests/modules/update_test_0/update_test_0.info.yml
@@ -4,4 +4,3 @@ description: 'Support module for update testing.'
 package: Testing
 version: VERSION
 core: 8.x
-hidden: true
diff --git a/core/modules/system/tests/modules/update_test_1/update_test_1.info.yml b/core/modules/system/tests/modules/update_test_1/update_test_1.info.yml
index 8ac616f..5a7e2e1 100644
--- a/core/modules/system/tests/modules/update_test_1/update_test_1.info.yml
+++ b/core/modules/system/tests/modules/update_test_1/update_test_1.info.yml
@@ -4,4 +4,3 @@ description: 'Support module for update testing.'
 package: Testing
 version: VERSION
 core: 8.x
-hidden: true
diff --git a/core/modules/system/tests/modules/update_test_2/update_test_2.info.yml b/core/modules/system/tests/modules/update_test_2/update_test_2.info.yml
index 8ac616f..5a7e2e1 100644
--- a/core/modules/system/tests/modules/update_test_2/update_test_2.info.yml
+++ b/core/modules/system/tests/modules/update_test_2/update_test_2.info.yml
@@ -4,4 +4,3 @@ description: 'Support module for update testing.'
 package: Testing
 version: VERSION
 core: 8.x
-hidden: true
diff --git a/core/modules/system/tests/modules/update_test_3/update_test_3.info.yml b/core/modules/system/tests/modules/update_test_3/update_test_3.info.yml
index 8ac616f..5a7e2e1 100644
--- a/core/modules/system/tests/modules/update_test_3/update_test_3.info.yml
+++ b/core/modules/system/tests/modules/update_test_3/update_test_3.info.yml
@@ -4,4 +4,3 @@ description: 'Support module for update testing.'
 package: Testing
 version: VERSION
 core: 8.x
-hidden: true
diff --git a/core/modules/system/tests/modules/update_test_invalid_hook/update_test_invalid_hook.info.yml b/core/modules/system/tests/modules/update_test_invalid_hook/update_test_invalid_hook.info.yml
index a41ace9..b9aefba 100644
--- a/core/modules/system/tests/modules/update_test_invalid_hook/update_test_invalid_hook.info.yml
+++ b/core/modules/system/tests/modules/update_test_invalid_hook/update_test_invalid_hook.info.yml
@@ -4,4 +4,3 @@ description: 'Support module for update testing.'
 package: Testing
 version: VERSION
 core: 8.x
-hidden: true
diff --git a/core/modules/system/tests/modules/update_test_with_7x/update_test_with_7x.info.yml b/core/modules/system/tests/modules/update_test_with_7x/update_test_with_7x.info.yml
index 3ac4a35..2b47a04 100644
--- a/core/modules/system/tests/modules/update_test_with_7x/update_test_with_7x.info.yml
+++ b/core/modules/system/tests/modules/update_test_with_7x/update_test_with_7x.info.yml
@@ -4,4 +4,3 @@ description: 'Support module for update testing.'
 package: Testing
 version: VERSION
 core: 8.x
-hidden: true
diff --git a/core/modules/system/tests/modules/url_alter_test/url_alter_test.info.yml b/core/modules/system/tests/modules/url_alter_test/url_alter_test.info.yml
index 699683e..95aba30 100644
--- a/core/modules/system/tests/modules/url_alter_test/url_alter_test.info.yml
+++ b/core/modules/system/tests/modules/url_alter_test/url_alter_test.info.yml
@@ -4,4 +4,3 @@ description: 'A support module to test altering the inbound and outbound path.'
 core: 8.x
 package: Testing
 version: VERSION
-hidden: true
diff --git a/core/modules/system/tests/themes/test_basetheme/test_basetheme.info.yml b/core/modules/system/tests/themes/test_basetheme/test_basetheme.info.yml
index 48c5b2b..2edc823 100644
--- a/core/modules/system/tests/themes/test_basetheme/test_basetheme.info.yml
+++ b/core/modules/system/tests/themes/test_basetheme/test_basetheme.info.yml
@@ -3,7 +3,6 @@ type: theme
 description: 'Test theme which acts as a base theme for other test subthemes.'
 version: VERSION
 core: 8.x
-hidden: true
 stylesheets:
   all:
     - base-add.css
diff --git a/core/modules/system/tests/themes/test_invalid_basetheme/test_invalid_basetheme.info.yml b/core/modules/system/tests/themes/test_invalid_basetheme/test_invalid_basetheme.info.yml
index a8d2bfe..f29a4d4 100644
--- a/core/modules/system/tests/themes/test_invalid_basetheme/test_invalid_basetheme.info.yml
+++ b/core/modules/system/tests/themes/test_invalid_basetheme/test_invalid_basetheme.info.yml
@@ -4,4 +4,3 @@ description: 'Test theme which has a non-existent base theme.'
 version: VERSION
 core: 8.x
 'base theme': not_real_test_basetheme
-hidden: true
diff --git a/core/modules/system/tests/themes/test_invalid_engine/test_invalid_engine.info.yml b/core/modules/system/tests/themes/test_invalid_engine/test_invalid_engine.info.yml
index 3f9ed1e..229ede4 100644
--- a/core/modules/system/tests/themes/test_invalid_engine/test_invalid_engine.info.yml
+++ b/core/modules/system/tests/themes/test_invalid_engine/test_invalid_engine.info.yml
@@ -3,5 +3,4 @@ type: theme
 description: 'Test theme which has a non-existent theme engine.'
 version: VERSION
 core: 8.x
-hidden: true
 engine: not_real_engine
diff --git a/core/modules/system/tests/themes/test_subtheme/test_subtheme.info.yml b/core/modules/system/tests/themes/test_subtheme/test_subtheme.info.yml
index 6123684..6adfee4 100644
--- a/core/modules/system/tests/themes/test_subtheme/test_subtheme.info.yml
+++ b/core/modules/system/tests/themes/test_subtheme/test_subtheme.info.yml
@@ -4,7 +4,6 @@ description: 'Test theme which uses test_basetheme as the base theme.'
 version: VERSION
 core: 8.x
 'base theme': test_basetheme
-hidden: true
 stylesheets:
   all:
     - css/sub-add.css
diff --git a/core/modules/system/tests/themes/test_theme/test_theme.info.yml b/core/modules/system/tests/themes/test_theme/test_theme.info.yml
index f41fafc..d845875 100644
--- a/core/modules/system/tests/themes/test_theme/test_theme.info.yml
+++ b/core/modules/system/tests/themes/test_theme/test_theme.info.yml
@@ -13,7 +13,6 @@ type: theme
 description: 'Theme for testing the theme system'
 version: VERSION
 core: 8.x
-hidden: true
 stylesheets-remove:
   - system.module.css
 settings:
diff --git a/core/modules/system/tests/themes/test_theme_phptemplate/test_theme_phptemplate.info.yml b/core/modules/system/tests/themes/test_theme_phptemplate/test_theme_phptemplate.info.yml
index e1a876a..da076b1 100644
--- a/core/modules/system/tests/themes/test_theme_phptemplate/test_theme_phptemplate.info.yml
+++ b/core/modules/system/tests/themes/test_theme_phptemplate/test_theme_phptemplate.info.yml
@@ -4,4 +4,3 @@ description: 'Theme for testing the theme system with the PHPTemplate engine'
 version: VERSION
 core: 8.x
 engine: phptemplate
-hidden: true
diff --git a/core/modules/taxonomy/tests/modules/taxonomy_test_views/taxonomy_test_views.info.yml b/core/modules/taxonomy/tests/modules/taxonomy_test_views/taxonomy_test_views.info.yml
index 864ce98..be87906 100644
--- a/core/modules/taxonomy/tests/modules/taxonomy_test_views/taxonomy_test_views.info.yml
+++ b/core/modules/taxonomy/tests/modules/taxonomy_test_views/taxonomy_test_views.info.yml
@@ -7,4 +7,3 @@ core: 8.x
 dependencies:
   - taxonomy
   - views
-hidden: true
diff --git a/core/modules/toolbar/tests/modules/toolbar_test/toolbar_test.info.yml b/core/modules/toolbar/tests/modules/toolbar_test/toolbar_test.info.yml
index 961d81e..98fc607 100644
--- a/core/modules/toolbar/tests/modules/toolbar_test/toolbar_test.info.yml
+++ b/core/modules/toolbar/tests/modules/toolbar_test/toolbar_test.info.yml
@@ -4,4 +4,3 @@ description: 'Support module for toolbar testing.'
 package: Testing
 version: VERSION
 core: 8.x
-hidden: true
diff --git a/core/modules/tour/tests/tour_test/tour_test.info.yml b/core/modules/tour/tests/tour_test/tour_test.info.yml
index 0617983..e55953a 100644
--- a/core/modules/tour/tests/tour_test/tour_test.info.yml
+++ b/core/modules/tour/tests/tour_test/tour_test.info.yml
@@ -4,6 +4,5 @@ description: Tests module for tour module.
 package: Core
 version: VERSION
 core: 8.x
-hidden: TRUE
 dependencies:
   - tour
diff --git a/core/modules/tracker/tests/modules/tracker_test_views/tracker_test_views.info.yml b/core/modules/tracker/tests/modules/tracker_test_views/tracker_test_views.info.yml
index 9eb2c61..45a64a1 100644
--- a/core/modules/tracker/tests/modules/tracker_test_views/tracker_test_views.info.yml
+++ b/core/modules/tracker/tests/modules/tracker_test_views/tracker_test_views.info.yml
@@ -7,4 +7,3 @@ core: 8.x
 dependencies:
   - tracker
   - views
-hidden: true
diff --git a/core/modules/update/tests/aaa_update_test/aaa_update_test.info.yml b/core/modules/update/tests/aaa_update_test/aaa_update_test.info.yml
index 0bfea75..c424e74 100644
--- a/core/modules/update/tests/aaa_update_test/aaa_update_test.info.yml
+++ b/core/modules/update/tests/aaa_update_test/aaa_update_test.info.yml
@@ -4,4 +4,3 @@ description: 'Support module for update module testing.'
 package: Testing
 version: VERSION
 core: 8.x
-hidden: true
diff --git a/core/modules/update/tests/modules/aaa_update_test/aaa_update_test.info.yml b/core/modules/update/tests/modules/aaa_update_test/aaa_update_test.info.yml
index 0bfea75..c424e74 100644
--- a/core/modules/update/tests/modules/aaa_update_test/aaa_update_test.info.yml
+++ b/core/modules/update/tests/modules/aaa_update_test/aaa_update_test.info.yml
@@ -4,4 +4,3 @@ description: 'Support module for update module testing.'
 package: Testing
 version: VERSION
 core: 8.x
-hidden: true
diff --git a/core/modules/update/tests/modules/bbb_update_test/bbb_update_test.info.yml b/core/modules/update/tests/modules/bbb_update_test/bbb_update_test.info.yml
index 25540c3..0c2226b 100644
--- a/core/modules/update/tests/modules/bbb_update_test/bbb_update_test.info.yml
+++ b/core/modules/update/tests/modules/bbb_update_test/bbb_update_test.info.yml
@@ -4,4 +4,3 @@ description: 'Support module for update module testing.'
 package: Testing
 version: VERSION
 core: 8.x
-hidden: true
diff --git a/core/modules/update/tests/modules/ccc_update_test/ccc_update_test.info.yml b/core/modules/update/tests/modules/ccc_update_test/ccc_update_test.info.yml
index 919adcd..6fcd4ec 100644
--- a/core/modules/update/tests/modules/ccc_update_test/ccc_update_test.info.yml
+++ b/core/modules/update/tests/modules/ccc_update_test/ccc_update_test.info.yml
@@ -4,4 +4,3 @@ description: 'Support module for update module testing.'
 package: Testing
 version: VERSION
 core: 8.x
-hidden: true
diff --git a/core/modules/update/tests/modules/update_test/update_test.info.yml b/core/modules/update/tests/modules/update_test/update_test.info.yml
index f6e38a3..053aafc 100644
--- a/core/modules/update/tests/modules/update_test/update_test.info.yml
+++ b/core/modules/update/tests/modules/update_test/update_test.info.yml
@@ -4,4 +4,3 @@ description: 'Support module for update module testing.'
 package: Testing
 version: VERSION
 core: 8.x
-hidden: true
diff --git a/core/modules/update/tests/themes/update_test_basetheme/update_test_basetheme.info.yml b/core/modules/update/tests/themes/update_test_basetheme/update_test_basetheme.info.yml
index cdb01bb..9162147 100644
--- a/core/modules/update/tests/themes/update_test_basetheme/update_test_basetheme.info.yml
+++ b/core/modules/update/tests/themes/update_test_basetheme/update_test_basetheme.info.yml
@@ -3,4 +3,3 @@ type: theme
 description: 'Test theme which acts as a base theme for other test subthemes.'
 version: VERSION
 core: 8.x
-hidden: true
diff --git a/core/modules/update/tests/themes/update_test_subtheme/update_test_subtheme.info.yml b/core/modules/update/tests/themes/update_test_subtheme/update_test_subtheme.info.yml
index d844542..2580fd6 100644
--- a/core/modules/update/tests/themes/update_test_subtheme/update_test_subtheme.info.yml
+++ b/core/modules/update/tests/themes/update_test_subtheme/update_test_subtheme.info.yml
@@ -4,4 +4,3 @@ description: 'Test theme which uses update_test_basetheme as the base theme.'
 version: VERSION
 core: 8.x
 'base theme': update_test_basetheme
-hidden: true
diff --git a/core/modules/user/tests/modules/user_custom_phpass_params_test/user_custom_phpass_params_test.info.yml b/core/modules/user/tests/modules/user_custom_phpass_params_test/user_custom_phpass_params_test.info.yml
index f227a34..68b8ff9 100644
--- a/core/modules/user/tests/modules/user_custom_phpass_params_test/user_custom_phpass_params_test.info.yml
+++ b/core/modules/user/tests/modules/user_custom_phpass_params_test/user_custom_phpass_params_test.info.yml
@@ -4,4 +4,3 @@ description: 'Support module for testing custom phpass password algorithm parame
 package: Testing
 version: VERSION
 core: 8.x
-hidden: true
diff --git a/core/modules/user/tests/modules/user_form_test/user_form_test.info.yml b/core/modules/user/tests/modules/user_form_test/user_form_test.info.yml
index ceea331..e77ebf2 100644
--- a/core/modules/user/tests/modules/user_form_test/user_form_test.info.yml
+++ b/core/modules/user/tests/modules/user_form_test/user_form_test.info.yml
@@ -4,4 +4,3 @@ description: 'Support module for user form testing.'
 package: Testing
 version: VERSION
 core: 8.x
-hidden: true
diff --git a/core/modules/user/tests/modules/user_test_views/user_test_views.info.yml b/core/modules/user/tests/modules/user_test_views/user_test_views.info.yml
index e13b350..2554769 100644
--- a/core/modules/user/tests/modules/user_test_views/user_test_views.info.yml
+++ b/core/modules/user/tests/modules/user_test_views/user_test_views.info.yml
@@ -7,4 +7,3 @@ core: 8.x
 dependencies:
   - user
   - views
-hidden: true
diff --git a/core/modules/views/tests/modules/views_test_config/views_test_config.info.yml b/core/modules/views/tests/modules/views_test_config/views_test_config.info.yml
index edbfd9c..3392573 100644
--- a/core/modules/views/tests/modules/views_test_config/views_test_config.info.yml
+++ b/core/modules/views/tests/modules/views_test_config/views_test_config.info.yml
@@ -6,4 +6,3 @@ version: VERSION
 core: 8.x
 dependencies:
   - views
-hidden: true
diff --git a/core/modules/views/tests/modules/views_test_data/views_test_data.info.yml b/core/modules/views/tests/modules/views_test_data/views_test_data.info.yml
index 07084c0..39b72e4 100644
--- a/core/modules/views/tests/modules/views_test_data/views_test_data.info.yml
+++ b/core/modules/views/tests/modules/views_test_data/views_test_data.info.yml
@@ -6,4 +6,3 @@ version: VERSION
 core: 8.x
 dependencies:
   - views
-hidden: true
diff --git a/core/modules/xmlrpc/tests/modules/xmlrpc_test/xmlrpc_test.info.yml b/core/modules/xmlrpc/tests/modules/xmlrpc_test/xmlrpc_test.info.yml
index 9c0fe2a..0359f92 100644
--- a/core/modules/xmlrpc/tests/modules/xmlrpc_test/xmlrpc_test.info.yml
+++ b/core/modules/xmlrpc/tests/modules/xmlrpc_test/xmlrpc_test.info.yml
@@ -4,4 +4,3 @@ description: 'Support module for XML-RPC tests according to the validator1 speci
 package: Testing
 version: VERSION
 core: 8.x
-hidden: true
diff --git a/core/profiles/testing/modules/drupal_system_listing_compatible_test/drupal_system_listing_compatible_test.info.yml b/core/profiles/testing/modules/drupal_system_listing_compatible_test/drupal_system_listing_compatible_test.info.yml
index c419771..30bccf7 100644
--- a/core/profiles/testing/modules/drupal_system_listing_compatible_test/drupal_system_listing_compatible_test.info.yml
+++ b/core/profiles/testing/modules/drupal_system_listing_compatible_test/drupal_system_listing_compatible_test.info.yml
@@ -4,4 +4,3 @@ description: 'Support module for testing the drupal_system_listing function.'
 package: Testing
 version: VERSION
 core: 8.x
-hidden: true
diff --git a/core/profiles/testing/modules/drupal_system_listing_incompatible_test/drupal_system_listing_incompatible_test.info.yml b/core/profiles/testing/modules/drupal_system_listing_incompatible_test/drupal_system_listing_incompatible_test.info.yml
index 042257d..17bda6c 100644
--- a/core/profiles/testing/modules/drupal_system_listing_incompatible_test/drupal_system_listing_incompatible_test.info.yml
+++ b/core/profiles/testing/modules/drupal_system_listing_incompatible_test/drupal_system_listing_incompatible_test.info.yml
@@ -4,4 +4,3 @@ description: 'Support module for testing the drupal_system_listing function.'
 package: Testing
 version: VERSION
 core: 6.x
-hidden: true
