class RenderExampleTest

class RenderExampleTest extends BrowserTestBase {
    
    /**
     * {@inheritdoc}
     */
    protected $defaultTheme = 'bartik';
    
    /**
     * {@inheritdoc}
     */
    public static $modules = [
        'render_example',
    ];
    
    /**
     * {@inheritdoc}
     *
     * Most of our render array altering behaviors are dependent on the standard
     * installation profile, so we'll use that here.
     */
    public $profile = 'standard';
    
    /**
     * Functional tests of the pages we made.
     *
     * Note these tests depend on the 'standard' profile.
     */
    public function testRenderExample() {
        // Create a user that can access devel information and log in.
        $web_user = $this->createUser([
            'access content',
        ]);
        $this->drupalLogin($web_user);
        $session = $this->assertSession();
        $altering_url = Url::fromRoute('render_example.altering');
        $this->drupalGet($altering_url);
        // Make sure we're telling the user about devel.
        $session->pageTextContains('Install the Devel module (https://www.drupal.org/project/devel) to enable additional demonstration features.');
        // Test moving the breadcrumb to the top of the content region. Since we
        // just installed render_example and the config defaults to FALSE for all
        // the alter options, we shouldn't have to manage state before making
        // assertions.
        $breadcrumb_xpath = "//main[@id='content']//div[contains(@class, 'block-system-breadcrumb-block')]";
        $this->assertEmpty($this->xpath($breadcrumb_xpath));
        // Move the breadcrumbs to content region.
        $this->drupalPostForm($altering_url, [
            'render_example_move_breadcrumbs' => TRUE,
            'render_example_reverse_sidebar' => FALSE,
            'render_example_wrap_blocks' => FALSE,
        ], 'Save configuration');
        $this->assertNotEmpty($this->xpath($breadcrumb_xpath));
        // Test reversing order of items in region sidebar-first. Get the node
        // elements under the sidebar region div.
        $breadcrumb_xpath = "//div[contains(@class,'region-sidebar-first')]/*";
        $elements = $this->xpath($breadcrumb_xpath);
        // There should be two elements, a div and then a nav.
        $this->assertEquals('div', $elements[0]->getTagName());
        $this->assertTrue($elements[0]->hasClass('block-search'));
        $this->assertEquals('nav', $elements[1]->getTagName());
        $this->drupalPostForm($altering_url, [
            'render_example_move_breadcrumbs' => FALSE,
            'render_example_reverse_sidebar' => TRUE,
            'render_example_wrap_blocks' => FALSE,
        ], 'Save configuration');
        // Get the elements again.
        $elements = $this->xpath($breadcrumb_xpath);
        // There should be two elements, a nav and then a div.
        $this->assertEquals('nav', $elements[0]->getTagName());
        $this->assertEquals('div', $elements[1]->getTagName());
        $this->assertTrue($elements[1]->hasClass('block-search'));
        // Test wrapping blocks in divs.
        $xpath = "//div[contains(@class,'block')]//div[@class='content']/div[@class='block-prefix']";
        $this->assertEmpty($this->xpath($xpath));
        $this->drupalPostForm($altering_url, [
            'render_example_move_breadcrumbs' => FALSE,
            'render_example_reverse_sidebar' => FALSE,
            'render_example_wrap_blocks' => TRUE,
        ], 'Save configuration');
        $this->assertNotEmpty($this->xpath($xpath));
        // Test some rendering facets of the various render examples.
        $this->drupalGet(Url::fromRoute('render_example.arrays'));
        $xpath_array = [
            // @todo: Add more of these.
'foof' => 'Hello ' . $web_user->getAccountName() . ', welcome to the #cache example.',
        ];
        foreach ($xpath_array as $value) {
            $session->pageTextContains($value);
        }
    }

}