installExtraModules example

protected function setUp(): void {
    parent::setUp();

    $this->adminUser = $this->drupalCreateUser($this->perms);
    $this->adminUser2 = $this->drupalCreateUser($this->perms);
  }

  /** * Tests toolbar cache integration. */
  public function testCacheIntegration() {
    $this->installExtraModules(['csrf_test', 'dynamic_page_cache']);
    $this->drupalLogin($this->adminUser);
    $this->drupalGet('test-page');
    $this->assertSession()->responseHeaderEquals('X-Drupal-Dynamic-Cache', 'MISS');
    $this->assertCacheContexts(['session', 'user', 'url.query_args:' . MainContentViewSubscriber::WRAPPER_FORMAT], 'Expected cache contexts found with CSRF token link.');
    $this->drupalGet('test-page');
    $this->assertSession()->responseHeaderEquals('X-Drupal-Dynamic-Cache', 'HIT');
    $this->assertCacheContexts(['session', 'user', 'url.query_args:' . MainContentViewSubscriber::WRAPPER_FORMAT], 'Expected cache contexts found with CSRF token link.');
  }

  /** * Tests toolbar cache contexts. */