DevelElementInfoTest.php

<?php

namespace Drupal\Tests\devel\Functional;

use Behat\Mink\Element\NodeElement;
use Drupal\Core\Url;

/**
 * Tests element info pages and links.
 *
 * @group devel
 */
class DevelElementInfoTest extends DevelBrowserTestBase {
    
    /**
     * {@inheritdoc}
     */
    protected function setUp() {
        parent::setUp();
        $this->drupalPlaceBlock('system_menu_block:devel');
        $this->drupalPlaceBlock('page_title_block');
        $this->drupalLogin($this->develUser);
    }
    
    /**
     * Tests element info menu link.
     */
    public function testElementInfoMenuLink() {
        $this->drupalPlaceBlock('system_menu_block:devel');
        // Ensures that the element info link is present on the devel menu and that
        // it points to the correct page.
        $this->drupalGet('');
        $this->clickLink('Element Info');
        $this->assertSession()
            ->statusCodeEquals(200);
        $this->assertSession()
            ->addressEquals('/devel/elements');
        $this->assertSession()
            ->pageTextContains('Element Info');
    }
    
    /**
     * Tests element list page.
     */
    public function testElementList() {
        $this->drupalGet('/devel/elements');
        $this->assertSession()
            ->statusCodeEquals(200);
        $this->assertSession()
            ->pageTextContains('Element Info');
        $page = $this->getSession()
            ->getPage();
        // Ensures that the element list table is found.
        $table = $page->find('css', 'table.devel-element-list');
        $this->assertNotNull($table);
        // Ensures that the expected table headers are found.
        $headers = $table->findAll('css', 'thead th');
        $this->assertEquals(4, count($headers));
        $expected_headers = [
            'Name',
            'Provider',
            'Class',
            'Operations',
        ];
        $actual_headers = array_map(function (NodeElement $element) {
            return $element->getText();
        }, $headers);
        $this->assertSame($expected_headers, $actual_headers);
        // Tests the presence of some (arbitrarily chosen) elements in the table.
        $expected_elements = [
            'button' => [
                'class' => 'Drupal\\Core\\Render\\Element\\Button',
                'provider' => 'core',
            ],
            'form' => [
                'class' => 'Drupal\\Core\\Render\\Element\\Form',
                'provider' => 'core',
            ],
            'html' => [
                'class' => 'Drupal\\Core\\Render\\Element\\Html',
                'provider' => 'core',
            ],
        ];
        foreach ($expected_elements as $element_name => $element) {
            $row = $table->find('css', sprintf('tbody tr:contains("%s")', $element_name));
            $this->assertNotNull($row);
            
            /** @var \Behat\Mink\Element\NodeElement[] $cells */
            $cells = $row->findAll('css', 'td');
            $this->assertEquals(4, count($cells));
            $cell = $cells[0];
            $this->assertEquals($element_name, $cell->getText());
            $this->assertTrue($cell->hasClass('table-filter-text-source'));
            $cell = $cells[1];
            $this->assertEquals($element['provider'], $cell->getText());
            $this->assertTrue($cell->hasClass('table-filter-text-source'));
            $cell = $cells[2];
            $this->assertEquals($element['class'], $cell->getText());
            $this->assertTrue($cell->hasClass('table-filter-text-source'));
            $cell = $cells[3];
            $actual_href = $cell->findLink('Devel')
                ->getAttribute('href');
            $expected_href = Url::fromRoute('devel.elements_page.detail', [
                'element_name' => $element_name,
            ])->toString();
            $this->assertEquals($expected_href, $actual_href);
        }
        // Ensures that the page is accessible only to the users with the adequate
        // permissions.
        $this->drupalLogout();
        $this->drupalGet('devel/elements');
        $this->assertSession()
            ->statusCodeEquals(403);
    }
    
    /**
     * Tests element detail page.
     */
    public function testElementDetail() {
        $element_name = 'button';
        // Ensures that the page works as expected.
        $this->drupalGet("/devel/elements/{$element_name}");
        $this->assertSession()
            ->statusCodeEquals(200);
        $this->assertSession()
            ->pageTextContains("Element {$element_name}");
        // Ensures that the page returns a 404 error if the requested element is
        // not defined.
        $this->drupalGet('/devel/elements/not_exists');
        $this->assertSession()
            ->statusCodeEquals(404);
        // Ensures that the page is accessible ony to users with the adequate
        // permissions.
        $this->drupalLogout();
        $this->drupalGet("/devel/elements/{$element_name}");
        $this->assertSession()
            ->statusCodeEquals(403);
    }

}