function PlaceholderMessageTest::testMessagePlaceholder

Tests rendering of message placeholder.

File

core/modules/system/tests/src/Functional/Render/PlaceholderMessageTest.php, line 30

Class

PlaceholderMessageTest

Functional test verifying that messages set in placeholders always appear.

Namespace

Code

public function testMessagePlaceholder() : void {
    $messages_markup = '<div role="contentinfo" aria-label="Status message"';
    $test_routes = [
        // Messages placeholder rendered first.
'render_placeholder_message_test.first',
        // Messages placeholder rendered after one, before another.
'render_placeholder_message_test.middle',
        // Messages placeholder rendered last.
'render_placeholder_message_test.last',
    ];
    $assert = $this->assertSession();
    foreach ($test_routes as $route) {
        // Verify that we start off with zero messages queued.
        $this->drupalGet(Url::fromRoute('render_placeholder_message_test.queued'));
        $assert->responseNotContains($messages_markup);
        // Verify the test case at this route behaves as expected.
        $this->drupalGet(Url::fromRoute($route));
        $assert->elementContains('css', 'p.logged-message:nth-of-type(1)', 'Message: P1');
        $assert->elementContains('css', 'p.logged-message:nth-of-type(2)', 'Message: P2');
        $assert->responseContains($messages_markup);
        $assert->elementExists('css', 'div[aria-label="Status message"] ul');
        $assert->elementContains('css', 'div[aria-label="Status message"] ul li:nth-of-type(1)', 'P1');
        $assert->elementContains('css', 'div[aria-label="Status message"] ul li:nth-of-type(2)', 'P2');
        // Verify that we end with all messages printed, hence again zero queued.
        $this->drupalGet(Url::fromRoute('render_placeholder_message_test.queued'));
        $assert->responseNotContains($messages_markup);
    }
}