--- /dev/null
+<?php
+
+namespace Drupal\Tests\TestSuites;
+use Drupal\simpletest\TestDiscovery;
+
+/**
+ * Base class for Drupal test suites.
+ */
+abstract class TestSuiteBase extends \PHPUnit_Framework_TestSuite {
+
+ /**
+ * Finds extensions in a Drupal installation.
+ *
+ * An extension is defined as a directory with an *.info.yml file in it.
+ *
+ * @param string $root
+ * Path to the root of the Drupal installation.
+ *
+ * @return string[]
+ * Associative array of extension paths, with extension name as keys.
+ */
+ protected function findExtensionDirectories($root) {
+ $extension_roots = \drupal_phpunit_contrib_extension_directory_roots($root);
+
+ $extension_directories = array_map('drupal_phpunit_find_extension_directories', $extension_roots);
+ return array_reduce($extension_directories, 'array_merge', []);
+ }
+
+ /**
+ * Find and add tests to the suite for core and any extensions.
+ *
+ * @param string $root
+ * Path to the root of the Drupal installation.
+ * @param string $suite_namespace
+ * SubNamespace used to separate test suite. Examples: Unit, Functional.
+ */
+ protected function addTestsBySuiteNamespace($root, $suite_namespace) {
+ // Core's tests are in the namespace Drupal\${suite_namespace}Tests\ and are
+ // always inside of core/tests/Drupal/${suite_namespace}Tests. The exception
+ // to this is Unit tests for historical reasons.
+ if ($suite_namespace == 'Unit') {
+ $this->addTestFiles(TestDiscovery::scanDirectory("Drupal\\Tests\\", "$root/core/tests/Drupal/Tests"));
+ }
+ else {
+ $this->addTestFiles(TestDiscovery::scanDirectory("Drupal\\${suite_namespace}Tests\\", "$root/core/tests/Drupal/${suite_namespace}Tests"));
+ }
+
+ // Extensions' tests will always be in the namespace
+ // Drupal\Tests\$extension_name\$suite_namespace\ and be in the
+ // $extension_path/tests/src/$suite_namespace directory. Not all extensions
+ // will have all kinds of tests.
+ foreach ($this->findExtensionDirectories($root) as $extension_name => $dir) {
+ $test_path = "$dir/tests/src/$suite_namespace";
+ if (is_dir($test_path)) {
+ $this->addTestFiles(TestDiscovery::scanDirectory("Drupal\\Tests\\$extension_name\\$suite_namespace\\", $test_path));
+ }
+ }
+ }
+
+}