Update to Drupal 8.1.0. For more information, see https://www.drupal.org/drupal-8.1.0-release-notes

core/tests/Drupal/FunctionalJavascriptTests/JavascriptTestBase.php

@@ -0,0 +1,82 @@
+<?php
+
+namespace Drupal\FunctionalJavascriptTests;
+
+use Drupal\Tests\BrowserTestBase;
+use Symfony\Component\CssSelector\CssSelector;
+use Zumba\Mink\Driver\PhantomJSDriver;
+
+/**
+ * Runs a browser test using PhantomJS.
+ *
+ * Base class for testing browser interaction implemented in JavaScript.
+ */
+abstract class JavascriptTestBase extends BrowserTestBase {
+
+  /**
+   * {@inheritdoc}
+   */
+  protected $minkDefaultDriverClass = PhantomJSDriver::class;
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function initMink() {
+    // Set up the template cache used by the PhantomJS mink driver.
+    $path = $this->tempFilesDirectory . DIRECTORY_SEPARATOR . 'browsertestbase-templatecache';
+    $this->minkDefaultDriverArgs = [
+      'http://127.0.0.1:8510',
+      $path,
+    ];
+    if (!file_exists($path)) {
+      mkdir($path);
+    }
+    return parent::initMink();
+  }
+
+  /**
+   * Asserts that the element with the given CSS selector is visible.
+   *
+   * @param string $css_selector
+   *   The CSS selector identifying the element to check.
+   * @param string $message
+   *   Optional message to show alongside the assertion.
+   */
+  protected function assertElementVisible($css_selector, $message = '') {
+    $this->assertTrue($this->getSession()->getDriver()->isVisible(CssSelector::toXPath($css_selector)), $message);
+  }
+
+  /**
+   * Asserts that the element with the given CSS selector is not visible.
+   *
+   * @param string $css_selector
+   *   The CSS selector identifying the element to check.
+   * @param string $message
+   *   Optional message to show alongside the assertion.
+   */
+  protected function assertElementNotVisible($css_selector, $message = '') {
+    $this->assertFalse($this->getSession()->getDriver()->isVisible(CssSelector::toXPath($css_selector)), $message);
+  }
+
+  /**
+   * Waits for the given time or until the given JS condition becomes TRUE.
+   *
+   * @param string $condition
+   *   JS condition to wait until it becomes TRUE.
+   * @param int $timeout
+   *   (Optional) Timeout in milliseconds, defaults to 1000.
+   * @param string $message
+   *   (optional) A message to display with the assertion. If left blank, a
+   *   default message will be displayed.
+   *
+   * @throws \PHPUnit_Framework_AssertionFailedError
+   *
+   * @see \Behat\Mink\Driver\DriverInterface::evaluateScript()
+   */
+  protected function assertJsCondition($condition, $timeout = 1000, $message = '') {
+    $message = $message ?: "Javascript condition met:\n" . $condition;
+    $result = $this->getSession()->getDriver()->wait($timeout, $condition);
+    $this->assertTrue($result, $message);
+  }
+
+}