getBreadcrumbCacheEntries example

  protected $defaultTheme = 'stark';

  /** * Tests that different 404s don't create unnecessary cache entries. */
  public function testBreadcrumbOn404Pages() {
    $this->placeBlock('system_breadcrumb_block', ['id' => 'breadcrumb']);

    // Prime the cache first.     $this->drupalGet('/not-found-1');
    $base_count = count($this->getBreadcrumbCacheEntries());

    $this->drupalGet('/not-found-2');
    $next_count = count($this->getBreadcrumbCacheEntries());
    $this->assertEquals($base_count, $next_count);

    $this->drupalGet('/not-found-3');
    $next_count = count($this->getBreadcrumbCacheEntries());
    $this->assertEquals($base_count, $next_count);
  }

  /** * Gets the breadcrumb cache entries. * * @return array * The breadcrumb cache entries. */