AssertLegacyTrait.php

<?php

// @codingStandardsIgnoreFile
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 in drupal:8.2.0 and is removed from drupal:10.0.0. Use
 *   the methods on \Drupal\Tests\WebAssert instead, for example
 * @code
 *    $this->assertSession()->statusCodeEquals(200);
 * @endcode
 *
 * @todo https://www.drupal.org/project/drupal/issues/3114617 Note that
 *   deprecations in this file do not use the @ symbol in Drupal 8 because this
 *   will be removed in Drupal 10.0.0. Adding the @ back should re-enable coding
 *   standards checks.
 */
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 in drupal:8.2.0 and is removed from drupal:10.0.0. 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 in drupal:8.2.0 and is removed from drupal:10.0.0. 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 in drupal:8.2.0 and is removed from drupal:10.0.0. Use
     *   - $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 in drupal:8.2.0 and is removed from drupal:10.0.0. Use
     *   - $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 in drupal:8.2.0 and is removed from drupal:10.0.0. 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 in drupal:8.2.0 and is removed from drupal:10.0.0. 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 in drupal:8.2.0 and is removed from drupal:10.0.0. 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 in drupal:8.2.0 and is removed from drupal:10.0.0. 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 in drupal:8.2.0 and is removed from drupal:10.0.0. 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 in drupal:8.2.0 and is removed from drupal:10.0.0. 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 in drupal:8.2.0 and is removed from drupal:10.0.0. 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 in drupal:8.2.0 and is removed from drupal:10.0.0. 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 in drupal:8.2.0 and is removed from drupal:10.0.0. 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 in drupal:8.2.0 and is removed from drupal:10.0.0. 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 in drupal:8.2.0 and is removed from drupal:10.0.0. 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 in drupal:8.2.0 and is removed from drupal:10.0.0. 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 in drupal:8.2.0 and is removed from drupal:10.0.0. 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 in drupal:8.2.0 and is removed from drupal:10.0.0. 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 in drupal:8.2.0 and is removed from drupal:10.0.0. 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 in drupal:8.2.0 and is removed from drupal:10.0.0. 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 in drupal:8.2.0 and is removed from drupal:10.0.0. 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 in drupal:8.2.0 and is removed from drupal:10.0.0. 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 in drupal:8.4.0 and is removed from drupal:10.0.0. 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 in drupal:8.2.0 and is removed from drupal:10.0.0. 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 in drupal:8.2.0 and is removed from drupal:10.0.0. 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 in drupal:8.2.0 and is removed from drupal:10.0.0. 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 in drupal:8.2.0 and is removed from drupal:10.0.0. 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 in drupal:8.3.0 and is removed from drupal:10.0.0. 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 in drupal:8.3.0 and is removed from drupal:10.0.0. 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 $message
     *   (optional) A message to display with the assertion. Do not translate
     *   messages with t().
     *
     * Deprecated in drupal:8.3.0 and is removed from drupal:10.0.0. Use
     *   iteration over the fields yourself instead and directly check the values
     *   in the test.
     */
    protected function assertFieldsByValue($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 in drupal:8.2.0 and is removed from drupal:10.0.0. 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 in drupal:8.2.0 and is removed from drupal:10.0.0. 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 in drupal:8.2.0 and is removed from drupal:10.0.0. 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 in drupal:8.4.0 and is removed from drupal:10.0.0. Use
     *   $this->assertSession()->responseNotMatches() instead.
     *
     * @see https://www.drupal.org/node/3129738
     */
    protected function assertNoPattern($pattern) {
        @trigger_error('AssertLegacyTrait::assertNoPattern() is deprecated in drupal:8.4.0 and is removed from drupal:10.0.0. Use $this->assertSession()->responseNotMatches() instead. See https://www.drupal.org/node/3129738', 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 in drupal:8.2.0 and is removed from drupal:10.0.0. 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 in drupal:8.4.0 and is removed from drupal:10.0.0. Use
     *   $this->assertSession()->responseHeaderNotContains() instead.
     *
     * @see https://www.drupal.org/node/3129738
     */
    protected function assertNoCacheTag($cache_tag) {
        @trigger_error('AssertLegacyTrait::assertNoCacheTag() is deprecated in drupal:8.4.0 and is removed from drupal:10.0.0. Use $this->assertSession()->responseHeaderNotContains() instead. See https://www.drupal.org/node/3129738', 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 in drupal:8.3.0 and is removed from drupal:10.0.0. Use
     *   $this->assertSession()->responseHeaderEquals() instead.
     */
    protected function assertHeader($name, $value) {
        $this->assertSession()
            ->responseHeaderEquals($name, $value);
    }
    
    /**
     * Returns WebAssert object.
     *
     * @param string $name
     *   (optional) Name of the session. Defaults to the active session.
     *
     * @return \Drupal\Tests\WebAssert
     *   A new web-assert option for asserting the presence of elements with.
     */
    public abstract function assertSession($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 in drupal:8.2.0 and is removed from drupal:10.0.0. 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 in drupal:8.5.0 and is removed from drupal:10.0.0. 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 in drupal:8.2.0 and is removed from drupal:10.0.0. Use
     *   $this->getSession()->getPage()->getContent() instead.
     *
     * @see https://www.drupal.org/node/3129738
     */
    protected function getRawContent() {
        @trigger_error('AssertLegacyTrait::getRawContent() is deprecated in drupal:8.2.0 and is removed from drupal:10.0.0. Use $this->getSession()->getPage()->getContent() instead. See https://www.drupal.org/node/3129738', 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 in drupal:8.5.0 and is removed from drupal:10.0.0. Use
     *   $element->findAll('xpath', 'option') instead.
     *
     * @see https://www.drupal.org/node/3129738
     */
    protected function getAllOptions(NodeElement $element) {
        @trigger_error('AssertLegacyTrait::getAllOptions() is deprecated in drupal:8.5.0 and is removed from drupal:10.0.0. Use $element->findAll(\'xpath\', \'option\') instead. See https://www.drupal.org/node/3129738', E_USER_DEPRECATED);
        return $element->findAll('xpath', '//option');
    }

}