--- /dev/null
+<?php
+
+namespace Drupal\simpletest\Tests;
+
+use Drupal\simpletest\WebTestBase;
+
+/**
+ * Tests the internal browser of the testing framework.
+ *
+ * @group simpletest
+ */
+class BrowserTest extends WebTestBase {
+
+ /**
+ * A flag indicating whether a cookie has been set in a test.
+ *
+ * @var bool
+ */
+ protected static $cookieSet = FALSE;
+
+ /**
+ * Modules to enable.
+ *
+ * @var string[]
+ */
+ public static $modules = ['block'];
+
+ /**
+ * {@inheritdoc}
+ */
+ protected function setUp() {
+ parent::setUp();
+
+ $this->drupalPlaceBlock('local_tasks_block');
+ }
+
+ /**
+ * Test \Drupal\simpletest\WebTestBase::getAbsoluteUrl().
+ */
+ public function testGetAbsoluteUrl() {
+ $url = 'user/login';
+
+ $this->drupalGet($url);
+ $absolute = \Drupal::url('user.login', [], ['absolute' => TRUE]);
+ $this->assertEqual($absolute, $this->url, 'Passed and requested URL are equal.');
+ $this->assertEqual($this->url, $this->getAbsoluteUrl($this->url), 'Requested and returned absolute URL are equal.');
+
+ $this->drupalPostForm(NULL, [], t('Log in'));
+ $this->assertEqual($absolute, $this->url, 'Passed and requested URL are equal.');
+ $this->assertEqual($this->url, $this->getAbsoluteUrl($this->url), 'Requested and returned absolute URL are equal.');
+
+ $this->clickLink('Create new account');
+ $absolute = \Drupal::url('user.register', [], ['absolute' => TRUE]);
+ $this->assertEqual($absolute, $this->url, 'Passed and requested URL are equal.');
+ $this->assertEqual($this->url, $this->getAbsoluteUrl($this->url), 'Requested and returned absolute URL are equal.');
+ }
+
+ /**
+ * Tests XPath escaping.
+ */
+ public function testXPathEscaping() {
+ $testpage = <<< EOF
+<html>
+<body>
+<a href="link1">A "weird" link, just to bother the dumb "XPath 1.0"</a>
+<a href="link2">A second "even more weird" link, in memory of George O'Malley</a>
+<a href="link3">A \$third$ link, so weird it's worth $1 million</a>
+<a href="link4">A fourth link, containing alternative \\1 regex backreferences \\2</a>
+</body>
+</html>
+EOF;
+ $this->setRawContent($testpage);
+
+ // Matches the first link.
+ $urls = $this->xpath('//a[text()=:text]', [':text' => 'A "weird" link, just to bother the dumb "XPath 1.0"']);
+ $this->assertEqual($urls[0]['href'], 'link1', 'Match with quotes.');
+
+ $urls = $this->xpath('//a[text()=:text]', [':text' => 'A second "even more weird" link, in memory of George O\'Malley']);
+ $this->assertEqual($urls[0]['href'], 'link2', 'Match with mixed single and double quotes.');
+
+ $urls = $this->xpath('//a[text()=:text]', [':text' => 'A $third$ link, so weird it\'s worth $1 million']);
+ $this->assertEqual($urls[0]['href'], 'link3', 'Match with a regular expression back reference symbol (dollar sign).');
+
+ $urls = $this->xpath('//a[text()=:text]', [':text' => 'A fourth link, containing alternative \\1 regex backreferences \\2']);
+ $this->assertEqual($urls[0]['href'], 'link4', 'Match with another regular expression back reference symbol (double backslash).');
+ }
+
+ /**
+ * Tests that cookies set during a request are available for testing.
+ */
+ public function testCookies() {
+ // Check that the $this->cookies property is populated when a user logs in.
+ $user = $this->drupalCreateUser();
+ $edit = ['name' => $user->getUsername(), 'pass' => $user->pass_raw];
+ $this->drupalPostForm('<front>', $edit, t('Log in'));
+ $this->assertEqual(count($this->cookies), 1, 'A cookie is set when the user logs in.');
+
+ // Check that the name and value of the cookie match the request data.
+ $cookie_header = $this->drupalGetHeader('set-cookie', TRUE);
+
+ // The name and value are located at the start of the string, separated by
+ // an equals sign and ending in a semicolon.
+ preg_match('/^([^=]+)=([^;]+)/', $cookie_header, $matches);
+ $name = $matches[1];
+ $value = $matches[2];
+
+ $this->assertTrue(array_key_exists($name, $this->cookies), 'The cookie name is correct.');
+ $this->assertEqual($value, $this->cookies[$name]['value'], 'The cookie value is correct.');
+
+ // Set a flag indicating that a cookie has been set in this test.
+ // @see testCookieDoesNotBleed()
+ static::$cookieSet = TRUE;
+ }
+
+ /**
+ * Tests that the cookies from a previous test do not bleed into a new test.
+ *
+ * @see static::testCookies()
+ */
+ public function testCookieDoesNotBleed() {
+ // In order for this test to be effective it should always run after the
+ // testCookies() test.
+ $this->assertTrue(static::$cookieSet, 'Tests have been executed in the expected order.');
+ $this->assertEqual(count($this->cookies), 0, 'No cookies are present at the start of a new test.');
+ }
+
+}