Issue #3506676 by jonathan1055: Add a phpunit test

.gitlab-ci.yml

@@ -77,3 +77,14 @@ phpcs:
         cp -v .gitlab/phpcs-ok.xml phpcs.xml.dist
         cp -v .gitlab/phpcs-ok.xml phpcs.xml.old
       fi
+
+phpunit:
+  before_script:
+    - echo "BEFORE_SCRIPT_ACTIONS = $BEFORE_SCRIPT_ACTIONS"
+    - |
+      if [[ $BEFORE_SCRIPT_ACTIONS =~ "phpunit-fail" ]]; then
+        echo "Executing phpunit-fail"
+        cd $CI_PROJECT_DIR && pwd
+        sed -i "s#assertTrue(TRUE#assertTrue(FALSE#g" tests/src/Functional/GitlabTemplatesDownstreamTest.php
+        cat tests/src/Functional/GitlabTemplatesDownstreamTest.php
+      fi

tests/src/Functional/GitlabTemplatesDownstreamOneTest.php

+<?php
+
+namespace Drupal\Tests\gitlab_templates_downstream\Functional;
+
+use Drupal\Tests\BrowserTestBase;
+
+/**
+ * Downstream tests.
+ *
+ * @group gtd1
+ */
+class GitlabTemplatesDownstreamOneTest extends BrowserTestBase {
+
+  /**
+   * {@inheritdoc}
+   */
+  protected $defaultTheme = 'stark';
+
+  /**
+   * A simple test.
+   */
+  public function testDownstream() {
+
+    $this->assertTrue(TRUE, 'The basic truth is being tested!');
+
+  }
+
+}

tests/src/Functional/GitlabTemplatesDownstreamTwoTest.php

+<?php
+
+namespace Drupal\Tests\gitlab_templates_downstream\Functional;
+
+use Drupal\Tests\BrowserTestBase;
+
+/**
+ * Downstream tests.
+ *
+ * @group gtd2
+ */
+class GitlabTemplatesDownstreamTwoTest extends BrowserTestBase {
+
+  /**
+   * {@inheritdoc}
+   */
+  protected $defaultTheme = 'stark';
+
+  /**
+   * A simple test.
+   */
+  public function testDownstream() {
+
+    $this->assertFalse(FALSE, 'The lie is being detected!');
+
+  }
+
+}