diff core/modules/system/src/Tests/Theme/ThemeSuggestionsAlterTest.php @ 0:4c8ae668cc8c

Initial import (non-working)

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/core/modules/system/src/Tests/Theme/ThemeSuggestionsAlterTest.php	Wed Nov 29 16:09:58 2017 +0000
@@ -0,0 +1,185 @@
+<?php
+
+namespace Drupal\system\Tests\Theme;
+
+use Drupal\Component\Utility\Xss;
+use Drupal\simpletest\WebTestBase;
+
+/**
+ * Tests theme suggestion alter hooks.
+ *
+ * @group Theme
+ */
+class ThemeSuggestionsAlterTest extends WebTestBase {
+
+  /**
+   * Modules to enable.
+   *
+   * @var array
+   */
+  public static $modules = ['theme_test'];
+
+  protected function setUp() {
+    parent::setUp();
+    \Drupal::service('theme_handler')->install(['test_theme']);
+  }
+
+  /**
+   * Tests that hooks to provide theme suggestions work.
+   */
+  public function testTemplateSuggestions() {
+    $this->drupalGet('theme-test/suggestion-provided');
+    $this->assertText('Template for testing suggestions provided by the module declaring the theme hook.');
+
+    // Install test_theme, it contains a template suggested by theme_test.module
+    // in theme_test_theme_suggestions_theme_test_suggestion_provided().
+    $this->config('system.theme')
+      ->set('default', 'test_theme')
+      ->save();
+
+    $this->drupalGet('theme-test/suggestion-provided');
+    $this->assertText('Template overridden based on suggestion provided by the module declaring the theme hook.');
+  }
+
+  /**
+   * Tests hook_theme_suggestions_alter().
+   */
+  public function testGeneralSuggestionsAlter() {
+    $this->drupalGet('theme-test/general-suggestion-alter');
+    $this->assertText('Original template for testing hook_theme_suggestions_alter().');
+
+    // Install test_theme and test that themes can alter template suggestions.
+    $this->config('system.theme')
+      ->set('default', 'test_theme')
+      ->save();
+    $this->drupalGet('theme-test/general-suggestion-alter');
+    $this->assertText('Template overridden based on new theme suggestion provided by the test_theme theme via hook_theme_suggestions_alter().');
+
+    // Enable the theme_suggestions_test module to test modules implementing
+    // suggestions alter hooks.
+    \Drupal::service('module_installer')->install(['theme_suggestions_test']);
+    $this->resetAll();
+    $this->drupalGet('theme-test/general-suggestion-alter');
+    $this->assertText('Template overridden based on new theme suggestion provided by a module via hook_theme_suggestions_alter().');
+  }
+
+  /**
+   * Tests that theme suggestion alter hooks work for templates.
+   */
+  public function testTemplateSuggestionsAlter() {
+    $this->drupalGet('theme-test/suggestion-alter');
+    $this->assertText('Original template for testing hook_theme_suggestions_HOOK_alter().');
+
+    // Install test_theme and test that themes can alter template suggestions.
+    $this->config('system.theme')
+      ->set('default', 'test_theme')
+      ->save();
+    $this->drupalGet('theme-test/suggestion-alter');
+    $this->assertText('Template overridden based on new theme suggestion provided by the test_theme theme via hook_theme_suggestions_HOOK_alter().');
+
+    // Enable the theme_suggestions_test module to test modules implementing
+    // suggestions alter hooks.
+    \Drupal::service('module_installer')->install(['theme_suggestions_test']);
+    $this->resetAll();
+    $this->drupalGet('theme-test/suggestion-alter');
+    $this->assertText('Template overridden based on new theme suggestion provided by a module via hook_theme_suggestions_HOOK_alter().');
+  }
+
+  /**
+   * Tests that theme suggestion alter hooks work for specific theme calls.
+   */
+  public function testSpecificSuggestionsAlter() {
+    // Test that the default template is rendered.
+    $this->drupalGet('theme-test/specific-suggestion-alter');
+    $this->assertText('Template for testing specific theme calls.');
+
+    $this->config('system.theme')
+      ->set('default', 'test_theme')
+      ->save();
+
+    // Test a specific theme call similar to '#theme' => 'node__article'.
+    $this->drupalGet('theme-test/specific-suggestion-alter');
+    $this->assertText('Template matching the specific theme call.');
+    $this->assertText('theme_test_specific_suggestions__variant', 'Specific theme call is added to the suggestions array.');
+
+    // Ensure that the base hook is used to determine the suggestion alter hook.
+    \Drupal::service('module_installer')->install(['theme_suggestions_test']);
+    $this->resetAll();
+    $this->drupalGet('theme-test/specific-suggestion-alter');
+    $this->assertText('Template overridden based on suggestion alter hook determined by the base hook.');
+    $this->assertTrue(strpos($this->getRawContent(), 'theme_test_specific_suggestions__variant') < strpos($this->getRawContent(), 'theme_test_specific_suggestions__variant__foo'), 'Specific theme call is added to the suggestions array before the suggestions alter hook.');
+  }
+
+  /**
+   * Tests that theme suggestion alter hooks work for theme functions.
+   */
+  public function testThemeFunctionSuggestionsAlter() {
+    $this->drupalGet('theme-test/function-suggestion-alter');
+    $this->assertText('Original theme function.');
+
+    // Install test_theme and test that themes can alter theme suggestions.
+    $this->config('system.theme')
+      ->set('default', 'test_theme')
+      ->save();
+    $this->drupalGet('theme-test/function-suggestion-alter');
+    $this->assertText('Theme function overridden based on new theme suggestion provided by the test_theme theme.');
+
+    // Enable the theme_suggestions_test module to test modules implementing
+    // suggestions alter hooks.
+    \Drupal::service('module_installer')->install(['theme_suggestions_test']);
+    $this->resetAll();
+    $this->drupalGet('theme-test/function-suggestion-alter');
+    $this->assertText('Theme function overridden based on new theme suggestion provided by a module.');
+  }
+
+  /**
+   * Tests that theme suggestion alter hooks work with theme hook includes.
+   */
+  public function testSuggestionsAlterInclude() {
+    // Check the original theme output.
+    $this->drupalGet('theme-test/suggestion-alter-include');
+    $this->assertText('Original function before altering theme suggestions.');
+
+    // Enable theme_suggestions_test module and make two requests to make sure
+    // the include file is always loaded. The file will always be included for
+    // the first request because the theme registry is being rebuilt.
+    \Drupal::service('module_installer')->install(['theme_suggestions_test']);
+    $this->resetAll();
+    $this->drupalGet('theme-test/suggestion-alter-include');
+    $this->assertText('Function suggested via suggestion alter hook found in include file.', 'Include file loaded for initial request.');
+    $this->drupalGet('theme-test/suggestion-alter-include');
+    $this->assertText('Function suggested via suggestion alter hook found in include file.', 'Include file loaded for second request.');
+  }
+
+  /**
+   * Tests execution order of theme suggestion alter hooks.
+   *
+   * hook_theme_suggestions_alter() should fire before
+   * hook_theme_suggestions_HOOK_alter() within an extension (module or theme).
+   */
+  public function testExecutionOrder() {
+    // Install our test theme and module.
+    $this->config('system.theme')
+      ->set('default', 'test_theme')
+      ->save();
+    \Drupal::service('module_installer')->install(['theme_suggestions_test']);
+    $this->resetAll();
+
+    // Send two requests so that we get all the messages we've set via
+    // drupal_set_message().
+    $this->drupalGet('theme-test/suggestion-alter');
+    // Ensure that the order is first by extension, then for a given extension,
+    // the hook-specific one after the generic one.
+    $expected = [
+      'theme_suggestions_test_theme_suggestions_alter() executed.',
+      'theme_suggestions_test_theme_suggestions_theme_test_suggestions_alter() executed.',
+      'theme_test_theme_suggestions_alter() executed.',
+      'theme_test_theme_suggestions_theme_test_suggestions_alter() executed.',
+      'test_theme_theme_suggestions_alter() executed.',
+      'test_theme_theme_suggestions_theme_test_suggestions_alter() executed.',
+    ];
+    $content = preg_replace('/\s+/', ' ', Xss::filter($this->content, []));
+    $this->assert(strpos($content, implode(' ', $expected)) !== FALSE, 'Suggestion alter hooks executed in the expected order.');
+  }
+
+}