function ThemeLinksTest::testDrupalPreRenderLinks

Test the use of drupal_pre_render_links() on a nested array of links.

File

modules/simpletest/tests/theme.test, line 308

Class

ThemeLinksTest

Unit tests for theme_links().

Code

function testDrupalPreRenderLinks() {
    // Define the base array to be rendered, containing a variety of different
    // kinds of links.
    $base_array = array(
        '#theme' => 'links',
        '#pre_render' => array(
            'drupal_pre_render_links',
        ),
        '#links' => array(
            'parent_link' => array(
                'title' => 'Parent link original',
                'href' => 'parent-link-original',
            ),
        ),
        'first_child' => array(
            '#theme' => 'links',
            '#links' => array(
                // This should be rendered if 'first_child' is rendered separately,
                // but ignored if the parent is being rendered (since it duplicates
                // one of the parent's links).
'parent_link' => array(
                    'title' => 'Parent link copy',
                    'href' => 'parent-link-copy',
                ),
                // This should always be rendered.
'first_child_link' => array(
                    'title' => 'First child link',
                    'href' => 'first-child-link',
                ),
            ),
        ),
        // This should always be rendered as part of the parent.
'second_child' => array(
            '#theme' => 'links',
            '#links' => array(
                'second_child_link' => array(
                    'title' => 'Second child link',
                    'href' => 'second-child-link',
                ),
            ),
        ),
        // This should never be rendered, since the user does not have access to
        // it.
'third_child' => array(
            '#theme' => 'links',
            '#links' => array(
                'third_child_link' => array(
                    'title' => 'Third child link',
                    'href' => 'third-child-link',
                ),
            ),
            '#access' => FALSE,
        ),
    );
    // Start with a fresh copy of the base array, and try rendering the entire
    // thing. We expect a single <ul> with appropriate links contained within
    // it.
    $render_array = $base_array;
    $html = drupal_render($render_array);
    $dom = new DOMDocument();
    $dom->loadHTML($html);
    $this->assertEqual($dom->getElementsByTagName('ul')->length, 1, 'One "ul" tag found in the rendered HTML.');
    $list_elements = $dom->getElementsByTagName('li');
    $this->assertEqual($list_elements->length, 3, 'Three "li" tags found in the rendered HTML.');
    $this->assertEqual($list_elements->item(0)->nodeValue, 'Parent link original', 'First expected link found.');
    $this->assertEqual($list_elements->item(1)->nodeValue, 'First child link', 'Second expected link found.');
    $this->assertEqual($list_elements->item(2)->nodeValue, 'Second child link', 'Third expected link found.');
    $this->assertIdentical(strpos($html, 'Parent link copy'), FALSE, '"Parent link copy" link not found.');
    $this->assertIdentical(strpos($html, 'Third child link'), FALSE, '"Third child link" link not found.');
    // Now render 'first_child', followed by the rest of the links, and make
    // sure we get two separate <ul>'s with the appropriate links contained
    // within each.
    $render_array = $base_array;
    $child_html = drupal_render($render_array['first_child']);
    $parent_html = drupal_render($render_array);
    // First check the child HTML.
    $dom = new DOMDocument();
    $dom->loadHTML($child_html);
    $this->assertEqual($dom->getElementsByTagName('ul')->length, 1, 'One "ul" tag found in the rendered child HTML.');
    $list_elements = $dom->getElementsByTagName('li');
    $this->assertEqual($list_elements->length, 2, 'Two "li" tags found in the rendered child HTML.');
    $this->assertEqual($list_elements->item(0)->nodeValue, 'Parent link copy', 'First expected link found.');
    $this->assertEqual($list_elements->item(1)->nodeValue, 'First child link', 'Second expected link found.');
    // Then check the parent HTML.
    $dom = new DOMDocument();
    $dom->loadHTML($parent_html);
    $this->assertEqual($dom->getElementsByTagName('ul')->length, 1, 'One "ul" tag found in the rendered parent HTML.');
    $list_elements = $dom->getElementsByTagName('li');
    $this->assertEqual($list_elements->length, 2, 'Two "li" tags found in the rendered parent HTML.');
    $this->assertEqual($list_elements->item(0)->nodeValue, 'Parent link original', 'First expected link found.');
    $this->assertEqual($list_elements->item(1)->nodeValue, 'Second child link', 'Second expected link found.');
    $this->assertIdentical(strpos($parent_html, 'First child link'), FALSE, '"First child link" link not found.');
    $this->assertIdentical(strpos($parent_html, 'Third child link'), FALSE, '"Third child link" link not found.');
}