function SimplestTest::testAutotextfields

Test AJAX behavior for the dropdown selector.

We'll perform the following steps:

• Open the simplest example page.
• Verify that our AJAX wrapper element is present, but is empty.
• Cause events by changing the value of the dropdown for all the different values.
• Verify that the prompt text changes when the dropdown changes.

File

ajax_example/tests/src/FunctionalJavascript/SimplestTest.php, line 35

Class

SimplestTest

Test the user interactions for the Simplest example.

Namespace

Code

public function testAutotextfields() {
    // Get the page.
    $this->drupalGet(Url::fromRoute('ajax_example.simplest'));
    // Get our Mink stuff.
    $page = $this->getSession()
        ->getPage();
    $assert = $this->assertSession();
    // Don't repeat ourselves. This makes it easier if we change the markup
    // later.
    $description_selector = '#replace-textfield-container div.description';
    // Check our initial state.
    $assert->elementExists('css', '#replace-textfield-container');
    $assert->elementNotExists('css', $description_selector);
    // Cause events by changing the value of the dropdown for all the different
    // values. Start with three so the change event is triggered.
    foreach ([
        'three',
        'two',
        'one',
    ] as $value) {
        // Select the dropdown value.
        $page->selectFieldOption('changethis', $value);
        // Wait for AJAX to happen.
        $assert->assertWaitOnAjaxRequest();
        // Assert that the description exists.
        $assert->elementExists('css', $description_selector);
        // Get the description element from the page.
        $prompt_element = $page->find('css', $description_selector);
        // Verify that the prompt text changes when the dropdown changes.
        $this->assertEquals("Say why you chose '{$value}'", $prompt_element->getText());
    }
}