--- /dev/null
+<?php
+
+namespace Drupal\Tests\settings_tray\FunctionalJavascript;
+
+/**
+ * Tests the off-canvas dialog functionality.
+ *
+ * @group settings_tray
+ */
+class OffCanvasTest extends SettingsTrayJavascriptTestBase {
+
+ /**
+ * {@inheritdoc}
+ */
+ public static $modules = [
+ 'block',
+ 'system',
+ 'toolbar',
+ 'settings_tray',
+ 'off_canvas_test',
+ ];
+
+ /**
+ * Tests that non-contextual links will work with the off-canvas dialog.
+ */
+ public function testOffCanvasLinks() {
+ // Test the same functionality on multiple themes.
+ foreach ($this->getTestThemes() as $theme) {
+ $this->enableTheme($theme);
+ $this->drupalGet('/off-canvas-test-links');
+
+ $page = $this->getSession()->getPage();
+ $web_assert = $this->assertSession();
+
+ // Make sure off-canvas dialog is on page when first loaded.
+ $web_assert->elementNotExists('css', '#drupal-off-canvas');
+
+ // Check opening and closing with two separate links.
+ // Make sure tray updates to new content.
+ // Check the first link again to make sure the empty title class is
+ // removed.
+ foreach (['1', '2', '1'] as $link_index) {
+ // Click the first test like that should open the page.
+ $page->clickLink("Click Me $link_index!");
+ $this->waitForOffCanvasToOpen();
+
+ // Check that the canvas is not on the page.
+ $web_assert->elementExists('css', '#drupal-off-canvas');
+ // Check that response text is on page.
+ $web_assert->pageTextContains("Thing $link_index says hello");
+ $off_canvas_tray = $this->getTray();
+
+ // Check that tray is visible.
+ $this->assertEquals(TRUE, $off_canvas_tray->isVisible());
+ $header_text = $off_canvas_tray->find('css', '.ui-dialog-title')->getText();
+
+ $tray_text = $off_canvas_tray->findById('drupal-off-canvas')->getText();
+ $this->assertEquals("Thing $link_index says hello", $tray_text);
+
+ if ($link_index == '2') {
+ // Check no title behavior.
+ $web_assert->elementExists('css', '.ui-dialog-empty-title');
+ $this->assertEquals("\xc2\xa0", $header_text);
+
+ $style = $page->find('css', '.ui-dialog-off-canvas')->getAttribute('style');
+ $this->assertTrue(strstr($style, 'width: 555px;') !== FALSE, 'Dialog width respected.');
+ $page->clickLink("Click Me 1!");
+ $this->waitForOffCanvasToOpen();
+ $style = $page->find('css', '.ui-dialog-off-canvas')->getAttribute('style');
+ $this->assertTrue(strstr($style, 'width: 555px;') === FALSE, 'Dialog width reset to default.');
+ }
+ else {
+ // Check that header is correct.
+ $this->assertEquals("Thing $link_index", $header_text);
+ $web_assert->elementNotExists('css', '.ui-dialog-empty-title');
+ }
+ }
+ }
+ }
+
+ /**
+ * Tests the body displacement behaves differently at a narrow width.
+ */
+ public function testNarrowWidth() {
+ $narrow_width_breakpoint = 768;
+ $offset = 20;
+ $height = 800;
+ $page = $this->getSession()->getPage();
+ $web_assert = $this->assertSession();
+
+ // Test the same functionality on multiple themes.
+ foreach ($this->getTestThemes() as $theme) {
+ $this->enableTheme($theme);
+ // Testing at the wider width.
+ $this->getSession()->resizeWindow($narrow_width_breakpoint + $offset, $height);
+ $this->drupalGet('/off-canvas-test-links');
+ $this->assertFalse($page->find('css', '.dialog-off-canvas__main-canvas')->hasAttribute('style'), 'Body not padded on wide page load.');
+ $page->clickLink("Click Me 1!");
+ $this->waitForOffCanvasToOpen();
+ // Check that the main canvas is padded when page is not narrow width and
+ // tray is open.
+ $web_assert->elementAttributeContains('css', '.dialog-off-canvas__main-canvas', 'style', 'padding-right');
+
+ // Testing at the narrower width.
+ $this->getSession()->resizeWindow($narrow_width_breakpoint - $offset, $height);
+ $this->drupalGet('/off-canvas-test-links');
+ $this->assertFalse($page->find('css', '.dialog-off-canvas__main-canvas')->hasAttribute('style'), 'Body not padded on narrow page load.');
+ $page->clickLink("Click Me 1!");
+ $this->waitForOffCanvasToOpen();
+ $this->assertFalse($page->find('css', '.dialog-off-canvas__main-canvas')->hasAttribute('style'), 'Body not padded on narrow page with tray open.');
+ }
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ protected function getTestThemes() {
+ // Add 'seven' theme. Setting Tray "Edit Mode" will not work with 'seven'
+ // because it removes all contextual links the off-canvas dialog should.
+ return array_merge(parent::getTestThemes(), ['seven']);
+ }
+
+}