diff --git a/core/modules/system/src/Tests/Module/ExperimentalModuleTest.php b/core/modules/system/src/Tests/Module/ExperimentalModuleTest.php
index 83af4ad..7b1a376 100644
--- a/core/modules/system/src/Tests/Module/ExperimentalModuleTest.php
+++ b/core/modules/system/src/Tests/Module/ExperimentalModuleTest.php
@@ -120,6 +120,14 @@ public function testExperimentalConfirmForm() {
     $this->drupalPostForm(NULL, [], 'Continue');
     $this->assertText('2 modules have been enabled: Experimental Test, Experimental Dependency Test');
 
+    // Try to enable an experimental module that can not be due to
+    // hook_requirements().
+    \Drupal::state()->set('experimental_module_requirements_test_requirements', TRUE);
+    $edit = [];
+    $edit["modules[Core (Experimental)][experimental_module_requirements_test][enable]"] = TRUE;
+    $this->drupalPostForm('admin/modules', $edit, 'Install');
+    $this->assertUrl('admin/modules', [], 'If the module can not be installed we are not taken to the confirm form.');
+    $this->assertText('The Experimental Test Requirements module can not be installed.');
   }
 
 }
diff --git a/core/modules/system/tests/modules/experimental_module_requirements_test/experimental_module_requirements_test.info.yml b/core/modules/system/tests/modules/experimental_module_requirements_test/experimental_module_requirements_test.info.yml
new file mode 100644
index 0000000..77c69d2
--- /dev/null
+++ b/core/modules/system/tests/modules/experimental_module_requirements_test/experimental_module_requirements_test.info.yml
@@ -0,0 +1,6 @@
+name: 'Experimental Requirements Test'
+type: module
+description: 'Module in the experimental package to test hook_requirements with an experimental module.'
+package: Core (Experimental)
+version: 8.y.x-unstable
+core: 8.x
diff --git a/core/modules/system/tests/modules/experimental_module_requirements_test/experimental_module_requirements_test.install b/core/modules/system/tests/modules/experimental_module_requirements_test/experimental_module_requirements_test.install
new file mode 100644
index 0000000..1ee0dca
--- /dev/null
+++ b/core/modules/system/tests/modules/experimental_module_requirements_test/experimental_module_requirements_test.install
@@ -0,0 +1,20 @@
+<?php
+
+/**
+ * @file
+ * Experimental Test Requirements module to test hook_requirements().
+ */
+
+/**
+ * Implements hook_requirements().
+ */
+function experimental_module_requirements_test_requirements() {
+  $requirements = [];
+  if (\Drupal::state()->get('experimental_module_requirements_test_requirements', FALSE)) {
+    $requirements['experimental_module_requirements_test_requirements'] = [
+      'severity' => REQUIREMENT_ERROR,
+      'description' => t('The Experimental Test Requirements module can not be installed.'),
+    ];
+  }
+  return $requirements;
+}