comparison core/tests/Drupal/FunctionalTests/AssertLegacyTrait.php @ 0:4c8ae668cc8c

Initial import (non-working)

+<?php
+
+namespace Drupal\FunctionalTests;
+
+use Behat\Mink\Element\NodeElement;
+use Behat\Mink\Exception\ExpectationException;
+use Behat\Mink\Selector\Xpath\Escaper;
+use Drupal\Component\Render\FormattableMarkup;
+use Drupal\Component\Utility\Xss;
+use Drupal\KernelTests\AssertLegacyTrait as BaseAssertLegacyTrait;
+
+/**
+ * Provides convenience methods for assertions in browser tests.
+ *
+ * @deprecated Scheduled for removal in Drupal 9.0.0. Use the methods on
+ *   \Drupal\Tests\WebAssert instead, for example
+ * @code
+ *    $this->assertSession()->statusCodeEquals(200);
+ * @endcode
+ */
+trait AssertLegacyTrait {
+
+  use BaseAssertLegacyTrait;
+
+  /**
+   * Asserts that the element with the given CSS selector is present.
+   *
+   * @param string $css_selector
+   *   The CSS selector identifying the element to check.
+   *
+   * @deprecated Scheduled for removal in Drupal 9.0.0.
+   *   Use $this->assertSession()->elementExists() instead.
+   */
+  protected function assertElementPresent($css_selector) {
+    $this->assertSession()->elementExists('css', $css_selector);
+  }
+
+  /**
+   * Asserts that the element with the given CSS selector is not present.
+   *
+   * @param string $css_selector
+   *   The CSS selector identifying the element to check.
+   *
+   * @deprecated Scheduled for removal in Drupal 9.0.0.
+   *   Use $this->assertSession()->elementNotExists() instead.
+   */
+  protected function assertElementNotPresent($css_selector) {
+    $this->assertSession()->elementNotExists('css', $css_selector);
+  }
+
+  /**
+   * Passes if the page (with HTML stripped) contains the text.
+   *
+   * Note that stripping HTML tags also removes their attributes, such as
+   * the values of text fields.
+   *
+   * @param string $text
+   *   Plain text to look for.
+   *
+   * @deprecated Scheduled for removal in Drupal 9.0.0.
+   *   Use instead:
+   *     - $this->assertSession()->responseContains() for non-HTML responses,
+   *       like XML or Json.
+   *     - $this->assertSession()->pageTextContains() for HTML responses. Unlike
+   *       the deprecated assertText(), the passed text should be HTML decoded,
+   *       exactly as a human sees it in the browser.
+   */
+  protected function assertText($text) {
+    // Cast MarkupInterface to string.
+    $text = (string) $text;
+
+    $content_type = $this->getSession()->getResponseHeader('Content-type');
+    // In case of a Non-HTML response (example: XML) check the original
+    // response.
+    if (strpos($content_type, 'html') === FALSE) {
+      $this->assertSession()->responseContains($text);
+    }
+    else {
+      $this->assertTextHelper($text, FALSE);
+    }
+  }
+
+  /**
+   * Passes if the page (with HTML stripped) does not contains the text.
+   *
+   * Note that stripping HTML tags also removes their attributes, such as
+   * the values of text fields.
+   *
+   * @param string $text
+   *   Plain text to look for.
+   *
+   * @deprecated Scheduled for removal in Drupal 9.0.0.
+   *   Use instead:
+   *     - $this->assertSession()->responseNotContains() for non-HTML responses,
+   *       like XML or Json.
+   *     - $this->assertSession()->pageTextNotContains() for HTML responses.
+   *       Unlike the deprecated assertNoText(), the passed text should be HTML
+   *       decoded, exactly as a human sees it in the browser.
+   */
+  protected function assertNoText($text) {
+    // Cast MarkupInterface to string.
+    $text = (string) $text;
+
+    $content_type = $this->getSession()->getResponseHeader('Content-type');
+    // In case of a Non-HTML response (example: XML) check the original
+    // response.
+    if (strpos($content_type, 'html') === FALSE) {
+      $this->assertSession()->responseNotContains($text);
+    }
+    else {
+      $this->assertTextHelper($text);
+    }
+  }
+
+  /**
+   * Helper for assertText and assertNoText.
+   *
+   * @param string $text
+   *   Plain text to look for.
+   * @param bool $not_exists
+   *   (optional) TRUE if this text should not exist, FALSE if it should.
+   *   Defaults to TRUE.
+   *
+   * @return bool
+   *   TRUE on pass, FALSE on fail.
+   */
+  protected function assertTextHelper($text, $not_exists = TRUE) {
+    $args = ['@text' => $text];
+    $message = $not_exists ? new FormattableMarkup('"@text" not found', $args) : new FormattableMarkup('"@text" found', $args);
+
+    $raw_content = $this->getSession()->getPage()->getContent();
+    // Trying to simulate what the user sees, given that it removes all text
+    // inside the head tags, removes inline Javascript, fix all HTML entities,
+    // removes dangerous protocols and filtering out all HTML tags, as they are
+    // not visible in a normal browser.
+    $raw_content = preg_replace('@<head>(.+?)</head>@si', '', $raw_content);
+    $page_text = Xss::filter($raw_content, []);
+
+    $actual = $not_exists == (strpos($page_text, (string) $text) === FALSE);
+    $this->assertTrue($actual, $message);
+
+    return $actual;
+  }
+
+  /**
+   * Passes if the text is found ONLY ONCE on the text version of the page.
+   *
+   * The text version is the equivalent of what a user would see when viewing
+   * through a web browser. In other words the HTML has been filtered out of
+   * the contents.
+   *
+   * @param string|\Drupal\Component\Render\MarkupInterface $text
+   *   Plain text to look for.
+   * @param string $message
+   *   (optional) A message to display with the assertion. Do not translate
+   *   messages with t(). If left blank, a default message will be displayed.
+   *
+   * @deprecated Scheduled for removal in Drupal 9.0.0.
+   *   Use $this->getSession()->getPage()->getText() and substr_count() instead.
+   */
+  protected function assertUniqueText($text, $message = NULL) {
+    // Cast MarkupInterface objects to string.
+    $text = (string) $text;
+
+    $message = $message ?: "'$text' found only once on the page";
+    $page_text = $this->getSession()->getPage()->getText();
+    $nr_found = substr_count($page_text, $text);
+    $this->assertSame(1, $nr_found, $message);
+  }
+
+  /**
+   * Passes if the text is found MORE THAN ONCE on the text version of the page.
+   *
+   * The text version is the equivalent of what a user would see when viewing
+   * through a web browser. In other words the HTML has been filtered out of
+   * the contents.
+   *
+   * @param string|\Drupal\Component\Render\MarkupInterface $text
+   *   Plain text to look for.
+   * @param string $message
+   *   (optional) A message to display with the assertion. Do not translate
+   *   messages with t(). If left blank, a default message will be displayed.
+   *
+   * @deprecated Scheduled for removal in Drupal 9.0.0.
+   *   Use $this->getSession()->getPage()->getText() and substr_count() instead.
+   */
+  protected function assertNoUniqueText($text, $message = '') {
+    // Cast MarkupInterface objects to string.
+    $text = (string) $text;
+
+    $message = $message ?: "'$text' found more than once on the page";
+    $page_text = $this->getSession()->getPage()->getText();
+    $nr_found = substr_count($page_text, $text);
+    $this->assertGreaterThan(1, $nr_found, $message);
+  }
+
+  /**
+   * Asserts the page responds with the specified response code.
+   *
+   * @param int $code
+   *   Response code. For example 200 is a successful page request. For a list
+   *   of all codes see http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html.
+   *
+   * @deprecated Scheduled for removal in Drupal 9.0.0.
+   *   Use $this->assertSession()->statusCodeEquals() instead.
+   */
+  protected function assertResponse($code) {
+    $this->assertSession()->statusCodeEquals($code);
+  }
+
+  /**
+   * Asserts that a field exists with the given name and value.
+   *
+   * @param string $name
+   *   Name of field to assert.
+   * @param string $value
+   *   (optional) Value of the field to assert. You may pass in NULL (default)
+   *   to skip checking the actual value, while still checking that the field
+   *   exists.
+   *
+   * @deprecated Scheduled for removal in Drupal 9.0.0.
+   *   Use $this->assertSession()->fieldExists() or
+   *   $this->assertSession()->buttonExists() or
+   *   $this->assertSession()->fieldValueEquals() instead.
+   */
+  protected function assertFieldByName($name, $value = NULL) {
+    $this->assertFieldByXPath($this->constructFieldXpath('name', $name), $value);
+  }
+
+  /**
+   * Asserts that a field does not exist with the given name and value.
+   *
+   * @param string $name
+   *   Name of field to assert.
+   * @param string $value
+   *   (optional) Value for the field, to assert that the field's value on the
+   *   page does not match it. You may pass in NULL to skip checking the
+   *   value, while still checking that the field does not exist. However, the
+   *   default value ('') asserts that the field value is not an empty string.
+   *
+   * @deprecated Scheduled for removal in Drupal 9.0.0.
+   *   Use $this->assertSession()->fieldNotExists() or
+   *   $this->assertSession()->buttonNotExists() or
+   *   $this->assertSession()->fieldValueNotEquals() instead.
+   */
+  protected function assertNoFieldByName($name, $value = '') {
+    $this->assertNoFieldByXPath($this->constructFieldXpath('name', $name), $value);
+  }
+
+  /**
+   * Asserts that a field exists with the given ID and value.
+   *
+   * @param string $id
+   *   ID of field to assert.
+   * @param string|\Drupal\Component\Render\MarkupInterface $value
+   *   (optional) Value for the field to assert. You may pass in NULL to skip
+   *   checking the value, while still checking that the field exists.
+   *   However, the default value ('') asserts that the field value is an empty
+   *   string.
+   *
+   * @throws \Behat\Mink\Exception\ElementNotFoundException
+   *
+   * @deprecated Scheduled for removal in Drupal 9.0.0.
+   *   Use $this->assertSession()->fieldExists() or
+   *   $this->assertSession()->buttonExists() or
+   *   $this->assertSession()->fieldValueEquals() instead.
+   */
+  protected function assertFieldById($id, $value = '') {
+    $this->assertFieldByXPath($this->constructFieldXpath('id', $id), $value);
+  }
+
+  /**
+   * Asserts that a field exists with the given name or ID.
+   *
+   * @param string $field
+   *   Name or ID of field to assert.
+   *
+   * @deprecated Scheduled for removal in Drupal 9.0.0.
+   *   Use $this->assertSession()->fieldExists() or
+   *   $this->assertSession()->buttonExists() instead.
+   */
+  protected function assertField($field) {
+    $this->assertFieldByXPath($this->constructFieldXpath('name', $field) . '|' . $this->constructFieldXpath('id', $field));
+  }
+
+  /**
+   * Asserts that a field does NOT exist with the given name or ID.
+   *
+   * @param string $field
+   *   Name or ID of field to assert.
+   *
+   * @deprecated Scheduled for removal in Drupal 9.0.0.
+   *   Use $this->assertSession()->fieldNotExists() or
+   *   $this->assertSession()->buttonNotExists() instead.
+   */
+  protected function assertNoField($field) {
+    $this->assertNoFieldByXPath($this->constructFieldXpath('name', $field) . '|' . $this->constructFieldXpath('id', $field));
+  }
+
+  /**
+   * Passes if the raw text IS found on the loaded page, fail otherwise.
+   *
+   * Raw text refers to the raw HTML that the page generated.
+   *
+   * @param string $raw
+   *   Raw (HTML) string to look for.
+   *
+   * @deprecated Scheduled for removal in Drupal 9.0.0.
+   *   Use $this->assertSession()->responseContains() instead.
+   */
+  protected function assertRaw($raw) {
+    $this->assertSession()->responseContains($raw);
+  }
+
+  /**
+   * Passes if the raw text IS not found on the loaded page, fail otherwise.
+   *
+   * Raw text refers to the raw HTML that the page generated.
+   *
+   * @param string $raw
+   *   Raw (HTML) string to look for.
+   *
+   * @deprecated Scheduled for removal in Drupal 9.0.0.
+   *   Use $this->assertSession()->responseNotContains() instead.
+   */
+  protected function assertNoRaw($raw) {
+    $this->assertSession()->responseNotContains($raw);
+  }
+
+  /**
+   * Pass if the page title is the given string.
+   *
+   * @param string $expected_title
+   *   The string the page title should be.
+   *
+   * @deprecated Scheduled for removal in Drupal 9.0.0.
+   *   Use $this->assertSession()->titleEquals() instead.
+   */
+  protected function assertTitle($expected_title) {
+    // Cast MarkupInterface to string.
+    $expected_title = (string) $expected_title;
+    return $this->assertSession()->titleEquals($expected_title);
+  }
+
+  /**
+   * Passes if a link with the specified label is found.
+   *
+   * An optional link index may be passed.
+   *
+   * @param string|\Drupal\Component\Render\MarkupInterface $label
+   *   Text between the anchor tags.
+   * @param int $index
+   *   Link position counting from zero.
+   *
+   * @deprecated Scheduled for removal in Drupal 9.0.0.
+   *   Use $this->assertSession()->linkExists() instead.
+   */
+  protected function assertLink($label, $index = 0) {
+    return $this->assertSession()->linkExists($label, $index);
+  }
+
+  /**
+   * Passes if a link with the specified label is not found.
+   *
+   * @param string|\Drupal\Component\Render\MarkupInterface $label
+   *   Text between the anchor tags.
+   *
+   * @deprecated Scheduled for removal in Drupal 9.0.0.
+   *   Use $this->assertSession()->linkNotExists() instead.
+   */
+  protected function assertNoLink($label) {
+    return $this->assertSession()->linkNotExists($label);
+  }
+
+  /**
+   * Passes if a link containing a given href (part) is found.
+   *
+   * @param string $href
+   *   The full or partial value of the 'href' attribute of the anchor tag.
+   * @param int $index
+   *   Link position counting from zero.
+   *
+   * @deprecated Scheduled for removal in Drupal 9.0.0.
+   *   Use $this->assertSession()->linkByHrefExists() instead.
+   */
+  protected function assertLinkByHref($href, $index = 0) {
+    $this->assertSession()->linkByHrefExists($href, $index);
+  }
+
+  /**
+   * Passes if a link containing a given href (part) is not found.
+   *
+   * @param string $href
+   *   The full or partial value of the 'href' attribute of the anchor tag.
+   *
+   * @deprecated Scheduled for removal in Drupal 9.0.0.
+   *   Use $this->assertSession()->linkByHrefNotExists() instead.
+   */
+  protected function assertNoLinkByHref($href) {
+    $this->assertSession()->linkByHrefNotExists($href);
+  }
+
+  /**
+   * Asserts that a field does not exist with the given ID and value.
+   *
+   * @param string $id
+   *   ID of field to assert.
+   * @param string $value
+   *   (optional) Value for the field, to assert that the field's value on the
+   *   page doesn't match it. You may pass in NULL to skip checking the value,
+   *   while still checking that the field doesn't exist. However, the default
+   *   value ('') asserts that the field value is not an empty string.
+   *
+   * @throws \Behat\Mink\Exception\ExpectationException
+   *
+   * @deprecated Scheduled for removal in Drupal 9.0.0.
+   *   Use $this->assertSession()->fieldNotExists() or
+   *   $this->assertSession()->buttonNotExists() or
+   *   $this->assertSession()->fieldValueNotEquals() instead.
+   */
+  protected function assertNoFieldById($id, $value = '') {
+    $this->assertNoFieldByXPath($this->constructFieldXpath('id', $id), $value);
+  }
+
+  /**
+   * Passes if the internal browser's URL matches the given path.
+   *
+   * @param \Drupal\Core\Url|string $path
+   *   The expected system path or URL.
+   *
+   * @deprecated Scheduled for removal in Drupal 9.0.0.
+   *   Use $this->assertSession()->addressEquals() instead.
+   */
+  protected function assertUrl($path) {
+    $this->assertSession()->addressEquals($path);
+  }
+
+  /**
+   * Asserts that a select option in the current page exists.
+   *
+   * @param string $id
+   *   ID of select field to assert.
+   * @param string $option
+   *   Option to assert.
+   *
+   * @deprecated Scheduled for removal in Drupal 9.0.0.
+   *   Use $this->assertSession()->optionExists() instead.
+   */
+  protected function assertOption($id, $option) {
+    return $this->assertSession()->optionExists($id, $option);
+  }
+
+  /**
+   * Asserts that a select option with the visible text exists.
+   *
+   * @param string $id
+   *   The ID of the select field to assert.
+   * @param string $text
+   *   The text for the option tag to assert.
+   *
+   * @deprecated Scheduled for removal in Drupal 9.0.0.
+   *   Use $this->assertSession()->optionExists() instead.
+   */
+  protected function assertOptionByText($id, $text) {
+    return $this->assertSession()->optionExists($id, $text);
+  }
+
+  /**
+   * Asserts that a select option does NOT exist in the current page.
+   *
+   * @param string $id
+   *   ID of select field to assert.
+   * @param string $option
+   *   Option to assert.
+   *
+   * @deprecated Scheduled for removal in Drupal 9.0.0.
+   *   Use $this->assertSession()->optionNotExists() instead.
+   */
+  protected function assertNoOption($id, $option) {
+    return $this->assertSession()->optionNotExists($id, $option);
+  }
+
+  /**
+   * Asserts that a select option in the current page is checked.
+   *
+   * @param string $id
+   *   ID of select field to assert.
+   * @param string $option
+   *   Option to assert.
+   * @param string $message
+   *   (optional) A message to display with the assertion. Do not translate
+   *   messages with t(). If left blank, a default message will be displayed.
+   *
+   * @deprecated Scheduled for removal in Drupal 9.0.0.
+   *   Use $this->assertSession()->optionExists() instead and check the
+   *   "selected" attribute yourself.
+   */
+  protected function assertOptionSelected($id, $option, $message = NULL) {
+    $option_field = $this->assertSession()->optionExists($id, $option);
+    $message = $message ?: "Option $option for field $id is selected.";
+    $this->assertTrue($option_field->hasAttribute('selected'), $message);
+  }
+
+  /**
+   * Asserts that a checkbox field in the current page is checked.
+   *
+   * @param string $id
+   *   ID of field to assert.
+   *
+   * @deprecated Scheduled for removal in Drupal 9.0.0.
+   *   Use $this->assertSession()->checkboxChecked() instead.
+   */
+  protected function assertFieldChecked($id) {
+    $this->assertSession()->checkboxChecked($id);
+  }
+
+  /**
+   * Asserts that a checkbox field in the current page is not checked.
+   *
+   * @param string $id
+   *   ID of field to assert.
+   *
+   * @deprecated Scheduled for removal in Drupal 9.0.0.
+   *   Use $this->assertSession()->checkboxNotChecked() instead.
+   */
+  protected function assertNoFieldChecked($id) {
+    $this->assertSession()->checkboxNotChecked($id);
+  }
+
+  /**
+   * Asserts that a field exists in the current page by the given XPath.
+   *
+   * @param string $xpath
+   *   XPath used to find the field.
+   * @param string $value
+   *   (optional) Value of the field to assert. You may pass in NULL (default)
+   *   to skip checking the actual value, while still checking that the field
+   *   exists.
+   * @param string $message
+   *   (optional) A message to display with the assertion. Do not translate
+   *   messages with t().
+   *
+   * @deprecated Scheduled for removal in Drupal 9.0.0.
+   *   Use $this->xpath() instead and check the values directly in the test.
+   */
+  protected function assertFieldByXPath($xpath, $value = NULL, $message = '') {
+    $fields = $this->xpath($xpath);
+
+    $this->assertFieldsByValue($fields, $value, $message);
+  }
+
+  /**
+   * Asserts that a field does not exist or its value does not match, by XPath.
+   *
+   * @param string $xpath
+   *   XPath used to find the field.
+   * @param string $value
+   *   (optional) Value of the field, to assert that the field's value on the
+   *   page does not match it.
+   * @param string $message
+   *   (optional) A message to display with the assertion. Do not translate
+   *   messages with t().
+   *
+   * @throws \Behat\Mink\Exception\ExpectationException
+   *
+   * @deprecated Scheduled for removal in Drupal 9.0.0.
+   *   Use $this->xpath() instead and assert that the result is empty.
+   */
+  protected function assertNoFieldByXPath($xpath, $value = NULL, $message = '') {
+    $fields = $this->xpath($xpath);
+
+    if (!empty($fields)) {
+      if (isset($value)) {
+        $found = FALSE;
+        try {
+          $this->assertFieldsByValue($fields, $value);
+          $found = TRUE;
+        }
+        catch (\Exception $e) {
+        }
+
+        if ($found) {
+          throw new ExpectationException(sprintf('The field resulting from %s was found with the provided value %s.', $xpath, $value), $this->getSession()->getDriver());
+        }
+      }
+      else {
+        throw new ExpectationException(sprintf('The field resulting from %s was found.', $xpath), $this->getSession()->getDriver());
+      }
+    }
+  }
+
+  /**
+   * Asserts that a field exists in the current page with a given Xpath result.
+   *
+   * @param \Behat\Mink\Element\NodeElement[] $fields
+   *   Xml elements.
+   * @param string $value
+   *   (optional) Value of the field to assert. You may pass in NULL (default) to skip
+   *   checking the actual value, while still checking that the field exists.
+   * @param string $message
+   *   (optional) A message to display with the assertion. Do not translate
+   *   messages with t().
+   *
+   * @deprecated Scheduled for removal in Drupal 9.0.0.
+   *   Iterate over the fields yourself instead and directly check the values in
+   *   the test.
+   */
+  protected function assertFieldsByValue($fields, $value = NULL, $message = '') {
+    // If value specified then check array for match.
+    $found = TRUE;
+    if (isset($value)) {
+      $found = FALSE;
+      if ($fields) {
+        foreach ($fields as $field) {
+          if ($field->getAttribute('type') == 'checkbox') {
+            if (is_bool($value)) {
+              $found = $field->isChecked() == $value;
+            }
+            else {
+              $found = TRUE;
+            }
+          }
+          elseif ($field->getAttribute('value') == $value) {
+            // Input element with correct value.
+            $found = TRUE;
+          }
+          elseif ($field->find('xpath', '//option[@value = ' . (new Escaper())->escapeLiteral($value) . ' and @selected = "selected"]')) {
+            // Select element with an option.
+            $found = TRUE;
+          }
+          elseif ($field->getTagName() === 'textarea' && $field->getValue() == $value) {
+            // Text area with correct text. Use getValue() here because
+            // getText() would remove any newlines in the value.
+            $found = TRUE;
+          }
+          elseif ($field->getTagName() !== 'input' && $field->getText() == $value) {
+            $found = TRUE;
+          }
+        }
+      }
+    }
+    $this->assertTrue($fields && $found, $message);
+  }
+
+  /**
+   * Passes if the raw text IS found escaped on the loaded page, fail otherwise.
+   *
+   * Raw text refers to the raw HTML that the page generated.
+   *
+   * @param string $raw
+   *   Raw (HTML) string to look for.
+   *
+   * @deprecated Scheduled for removal in Drupal 9.0.0.
+   *   Use $this->assertSession()->assertEscaped() instead.
+   */
+  protected function assertEscaped($raw) {
+    $this->assertSession()->assertEscaped($raw);
+  }
+
+  /**
+   * Passes if the raw text is not found escaped on the loaded page.
+   *
+   * Raw text refers to the raw HTML that the page generated.
+   *
+   * @param string $raw
+   *   Raw (HTML) string to look for.
+   *
+   * @deprecated Scheduled for removal in Drupal 9.0.0.
+   *   Use $this->assertSession()->assertNoEscaped() instead.
+   */
+  protected function assertNoEscaped($raw) {
+    $this->assertSession()->assertNoEscaped($raw);
+  }
+
+  /**
+   * Triggers a pass if the Perl regex pattern is found in the raw content.
+   *
+   * @param string $pattern
+   *   Perl regex to look for including the regex delimiters.
+   *
+   * @deprecated Scheduled for removal in Drupal 9.0.0.
+   *   Use $this->assertSession()->responseMatches() instead.
+   */
+  protected function assertPattern($pattern) {
+    $this->assertSession()->responseMatches($pattern);
+  }
+
+  /**
+   * Triggers a pass if the Perl regex pattern is not found in the raw content.
+   *
+   * @param string $pattern
+   *   Perl regex to look for including the regex delimiters.
+   *
+   * @deprecated Scheduled for removal in Drupal 9.0.0.
+   *   Use $this->assertSession()->responseNotMatches() instead.
+   *
+   * @see https://www.drupal.org/node/2864262
+   */
+  protected function assertNoPattern($pattern) {
+    @trigger_error('assertNoPattern() is deprecated and scheduled for removal in Drupal 9.0.0. Use $this->assertSession()->responseNotMatches($pattern) instead. See https://www.drupal.org/node/2864262.', E_USER_DEPRECATED);
+    $this->assertSession()->responseNotMatches($pattern);
+  }
+
+  /**
+   * Asserts whether an expected cache tag was present in the last response.
+   *
+   * @param string $expected_cache_tag
+   *   The expected cache tag.
+   *
+   * @deprecated Scheduled for removal in Drupal 9.0.0.
+   *   Use $this->assertSession()->responseHeaderContains() instead.
+   */
+  protected function assertCacheTag($expected_cache_tag) {
+    $this->assertSession()->responseHeaderContains('X-Drupal-Cache-Tags', $expected_cache_tag);
+  }
+
+  /**
+   * Asserts whether an expected cache tag was absent in the last response.
+   *
+   * @param string $cache_tag
+   *   The cache tag to check.
+   *
+   * @deprecated Scheduled for removal in Drupal 9.0.0.
+   *   Use $this->assertSession()->responseHeaderNotContains() instead.
+   *
+   * @see https://www.drupal.org/node/2864029
+   */
+  protected function assertNoCacheTag($cache_tag) {
+    @trigger_error('assertNoCacheTag() is deprecated and scheduled for removal in Drupal 9.0.0. Use $this->assertSession()->responseHeaderNotContains() instead. See https://www.drupal.org/node/2864029.', E_USER_DEPRECATED);
+    $this->assertSession()->responseHeaderNotContains('X-Drupal-Cache-Tags', $cache_tag);
+  }
+
+  /**
+   * Checks that current response header equals value.
+   *
+   * @param string $name
+   *   Name of header to assert.
+   * @param string $value
+   *   Value of the header to assert
+   *
+   * @deprecated Scheduled for removal in Drupal 9.0.0.
+   *   Use $this->assertSession()->responseHeaderEquals() instead.
+   */
+  protected function assertHeader($name, $value) {
+    $this->assertSession()->responseHeaderEquals($name, $value);
+  }
+
+  /**
+   * Returns WebAssert object.
+   *
+   * @param string $name
+   *   (optional) Name of the session. Defaults to the active session.
+   *
+   * @return \Drupal\Tests\WebAssert
+   *   A new web-assert option for asserting the presence of elements with.
+   */
+  abstract public function assertSession($name = NULL);
+
+  /**
+   * Builds an XPath query.
+   *
+   * Builds an XPath query by replacing placeholders in the query by the value
+   * of the arguments.
+   *
+   * XPath 1.0 (the version supported by libxml2, the underlying XML library
+   * used by PHP) doesn't support any form of quotation. This function
+   * simplifies the building of XPath expression.
+   *
+   * @param string $xpath
+   *   An XPath query, possibly with placeholders in the form ':name'.
+   * @param array $args
+   *   An array of arguments with keys in the form ':name' matching the
+   *   placeholders in the query. The values may be either strings or numeric
+   *   values.
+   *
+   * @return string
+   *   An XPath query with arguments replaced.
+   *
+   * @deprecated Scheduled for removal in Drupal 9.0.0.
+   *   Use $this->assertSession()->buildXPathQuery() instead.
+   */
+  protected function buildXPathQuery($xpath, array $args = []) {
+    return $this->assertSession()->buildXPathQuery($xpath, $args);
+  }
+
+  /**
+   * Helper: Constructs an XPath for the given set of attributes and value.
+   *
+   * @param string $attribute
+   *   Field attributes.
+   * @param string $value
+   *   Value of field.
+   *
+   * @return string
+   *   XPath for specified values.
+   *
+   * @deprecated Scheduled for removal in Drupal 9.0.0.
+   *   Use $this->getSession()->getPage()->findField() instead.
+   */
+  protected function constructFieldXpath($attribute, $value) {
+    $xpath = '//textarea[@' . $attribute . '=:value]|//input[@' . $attribute . '=:value]|//select[@' . $attribute . '=:value]';
+    return $this->buildXPathQuery($xpath, [':value' => $value]);
+  }
+
+  /**
+   * Gets the current raw content.
+   *
+   * @deprecated Scheduled for removal in Drupal 9.0.0.
+   *   Use $this->getSession()->getPage()->getContent() instead.
+   */
+  protected function getRawContent() {
+    @trigger_error('AssertLegacyTrait::getRawContent() is scheduled for removal in Drupal 9.0.0. Use $this->getSession()->getPage()->getContent() instead.', E_USER_DEPRECATED);
+    return $this->getSession()->getPage()->getContent();
+  }
+
+  /**
+   * Get all option elements, including nested options, in a select.
+   *
+   * @param \Behat\Mink\Element\NodeElement $element
+   *   The element for which to get the options.
+   *
+   * @return \Behat\Mink\Element\NodeElement[]
+   *   Option elements in select.
+   *
+   * @deprecated Scheduled for removal in Drupal 9.0.0.
+   *   Use $element->findAll('xpath', 'option') instead.
+   */
+  protected function getAllOptions(NodeElement $element) {
+    @trigger_error('AssertLegacyTrait::getAllOptions() is scheduled for removal in Drupal 9.0.0. Use $element->findAll(\'xpath\', \'option\') instead.', E_USER_DEPRECATED);
+    return $element->findAll('xpath', '//option');
+  }
+
+}