function BigPipeTest::assertBigPipePlaceholders

Asserts expected BigPipe placeholders are present and replaced.

@internal

Parameters

array $expected_big_pipe_placeholders: Keys: BigPipe placeholder IDs. Values: expected AJAX response.

array $expected_big_pipe_placeholder_stream_order: Keys: BigPipe placeholder IDs. Values: expected AJAX response. Keys are defined in the order that they are expected to be rendered & streamed.

File

core/modules/big_pipe/tests/src/Functional/BigPipeTest.php, line 367

Class

BigPipeTest

Tests BigPipe's no-JS detection & response delivery (with and without JS).

Namespace

Code

protected function assertBigPipePlaceholders(array $expected_big_pipe_placeholders, array $expected_big_pipe_placeholder_stream_order) : void {
    $this->assertSetsEqual(array_keys($expected_big_pipe_placeholders), explode(' ', $this->getSession()
        ->getResponseHeader('BigPipe-Test-Placeholders')));
    $placeholder_positions = [];
    $placeholder_replacement_positions = [];
    foreach ($expected_big_pipe_placeholders as $big_pipe_placeholder_id => $expected_ajax_response) {
        // Verify expected placeholder.
        $expected_placeholder_html = '<span data-big-pipe-placeholder-id="' . $big_pipe_placeholder_id . '"></span>';
        $this->assertSession()
            ->responseContains($expected_placeholder_html);
        $pos = strpos($this->getSession()
            ->getPage()
            ->getContent(), $expected_placeholder_html);
        $placeholder_positions[$pos] = $big_pipe_placeholder_id;
        // Verify expected placeholder replacement.
        $expected_placeholder_replacement = '<script type="application/vnd.drupal-ajax" data-big-pipe-replacement-for-placeholder-with-id="' . $big_pipe_placeholder_id . '">';
        $xpath = '//script[@data-big-pipe-replacement-for-placeholder-with-id="' . Html::decodeEntities($big_pipe_placeholder_id) . '"]';
        if ($expected_ajax_response === NULL) {
            $this->assertSession()
                ->elementNotExists('xpath', $xpath);
            $this->assertSession()
                ->responseNotContains($expected_placeholder_replacement);
            continue;
        }
        $this->assertSession()
            ->elementTextContains('xpath', $xpath, $expected_ajax_response);
        $this->assertSession()
            ->responseContains($expected_placeholder_replacement);
        $pos = strpos($this->getSession()
            ->getPage()
            ->getContent(), $expected_placeholder_replacement);
        $placeholder_replacement_positions[$pos] = $big_pipe_placeholder_id;
    }
    ksort($placeholder_positions, SORT_NUMERIC);
    $this->assertEquals(array_keys($expected_big_pipe_placeholders), array_values($placeholder_positions));
    $placeholders = array_map(function (NodeElement $element) {
        return $element->getAttribute('data-big-pipe-placeholder-id');
    }, $this->cssSelect('[data-big-pipe-placeholder-id]'));
    $this->assertSameSize($expected_big_pipe_placeholders, array_unique($placeholders));
    $expected_big_pipe_placeholders_with_replacements = [];
    foreach ($expected_big_pipe_placeholder_stream_order as $big_pipe_placeholder_id) {
        $expected_big_pipe_placeholders_with_replacements[$big_pipe_placeholder_id] = $expected_big_pipe_placeholders[$big_pipe_placeholder_id];
    }
    $this->assertEquals($expected_big_pipe_placeholders_with_replacements, array_filter($expected_big_pipe_placeholders));
    $this->assertSetsEqual(array_keys($expected_big_pipe_placeholders_with_replacements), array_values($placeholder_replacement_positions));
    $this->assertSame(count($expected_big_pipe_placeholders_with_replacements), preg_match_all('/' . preg_quote('<script type="application/vnd.drupal-ajax" data-big-pipe-replacement-for-placeholder-with-id="', '/') . '/', $this->getSession()
        ->getPage()
        ->getContent()));
    // Verifying BigPipe start/stop signals.
    $this->assertSession()
        ->responseContains(BigPipe::START_SIGNAL);
    $this->assertSession()
        ->responseContains(BigPipe::STOP_SIGNAL);
    $start_signal_position = strpos($this->getSession()
        ->getPage()
        ->getContent(), BigPipe::START_SIGNAL);
    $stop_signal_position = strpos($this->getSession()
        ->getPage()
        ->getContent(), BigPipe::STOP_SIGNAL);
    $this->assertTrue($start_signal_position < $stop_signal_position, 'BigPipe start signal appears before stop signal.');
    // Verifying BigPipe placeholder replacements and start/stop signals were
    // streamed in the correct order.
    $expected_stream_order = array_keys($expected_big_pipe_placeholders_with_replacements);
    array_unshift($expected_stream_order, BigPipe::START_SIGNAL);
    array_push($expected_stream_order, BigPipe::STOP_SIGNAL);
    $actual_stream_order = $placeholder_replacement_positions + [
        $start_signal_position => BigPipe::START_SIGNAL,
        $stop_signal_position => BigPipe::STOP_SIGNAL,
    ];
    ksort($actual_stream_order, SORT_NUMERIC);
    $this->assertEquals($expected_stream_order, array_values($actual_stream_order));
}