core/drupalci.yml                                  | 28 +---------------------
 .../Core/Config/SchemaCheckTraitTest.php           |  9 ++-----
 2 files changed, 3 insertions(+), 34 deletions(-)

diff --git a/core/drupalci.yml b/core/drupalci.yml
index 25ab1c9ddf..0b24a3b995 100644
--- a/core/drupalci.yml
+++ b/core/drupalci.yml
@@ -18,34 +18,8 @@ build:
       # halt-on-fail can be set on the run_tests tasks in order to fail fast.
       # suppress-deprecations is false in order to be alerted to usages of
       # deprecated code.
-#      run_tests.phpunit:
-#        types: 'PHPUnit-Unit'
-#        suppress-deprecations: false
-#        halt-on-fail: false
-#        <<: *testgroups
-#      run_tests.kernel:
-#        types: 'PHPUnit-Kernel'
-#        suppress-deprecations: false
-#        halt-on-fail: false
-#        <<: *testgroups
-#      run_tests.build:
-#        # Limit concurrency due to disk space concerns.
-#        concurrency: 15
-#        types: 'PHPUnit-Build'
-#        suppress-deprecations: false
-#        halt-on-fail: false
-#        <<: *testgroups
       run_tests.functional:
         types: 'PHPUnit-Functional'
         suppress-deprecations: false
         halt-on-fail: false
-        testgroups: --group standard
-#      run_tests.javascript:
-#        concurrency: 15
-#        types: 'PHPUnit-FunctionalJavascript'
-#        suppress-deprecations: false
-#        halt-on-fail: false
-#        <<: *testgroups
-#      # Run nightwatch testing.
-#      # @see https://www.drupal.org/project/drupal/issues/2869825
-#      nightwatchjs: {}
+        testgroups: --file core/tests/Drupal/KernelTests/Core/Config/SchemaCheckTraitTest.php
diff --git a/core/tests/Drupal/KernelTests/Core/Config/SchemaCheckTraitTest.php b/core/tests/Drupal/KernelTests/Core/Config/SchemaCheckTraitTest.php
index 97699eeb99..f51859b249 100644
--- a/core/tests/Drupal/KernelTests/Core/Config/SchemaCheckTraitTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Config/SchemaCheckTraitTest.php
@@ -52,14 +52,9 @@ public function testTrait() {
 
     // Add a new key, a new array and overwrite boolean with array to test the
     // error messages.
-    $config_data = ['new_key' => 'new_value', 'new_array' => []] + $config_data;
-    $config_data['boolean'] = [];
+    $config_data = [];
     $ret = $this->checkConfigSchema($this->typedConfig, 'config_test.types', $config_data);
-    $expected = [
-      'config_test.types:new_key' => 'missing schema',
-      'config_test.types:new_array' => 'missing schema',
-      'config_test.types:boolean' => 'non-scalar value but not defined as an array (such as mapping or sequence)',
-    ];
+    $expected = TRUE;
     $this->assertEquals($expected, $ret);
   }