reverted:
--- b/core/tests/Drupal/Tests/BrowserTestBase.php
+++ a/core/tests/Drupal/Tests/BrowserTestBase.php
@@ -795,11 +795,6 @@
 
     // Edit the form values.
     foreach ($edit as $name => $value) {
-      // Provide support for 1, 0 for checkboxes instead of TRUE and FALSE.
-      if (strpos($name, 'name[') === 0) {
-        $value = (bool) $value;
-      }
-
       $field = $assert_session->fieldExists($name, $form);
 
       // Provide support for the values '1' and '0' for checkboxes instead of
reverted:
--- b/core/tests/Drupal/Tests/WebAssert.php
+++ a/core/tests/Drupal/Tests/WebAssert.php
@@ -349,150 +349,6 @@
   }
 
   /**
-   * Passes if a link with the specified label is not 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.
-   * @param string $message
-   *   (optional) A message to display with the assertion. Do not translate
-   *   messages: use strtr() to embed variables in the message text, not
-   *   t(). If left blank, a default message will be displayed.
-   *
-   * @throws \Behat\Mink\Exception\ExpectationException
-   *   Thrown when element doesn't exist, or the link label is a different one.
-   */
-  public function linkNotExists($label, $message = '') {
-    // Cast MarkupInterface objects to string.
-    $label = (string) $label;
-    $message = ($message ? $message : strtr('Link with label %label found.', ['%label' => $label]));
-    $links = $this->session->getPage()->findAll('named', ['link', $label]);
-    if (!empty($links)) {
-      throw new ExpectationException($message);
-    }
-    $this->assert(TRUE, $message);
-  }
-
-  /**
-   * {@inheritdoc}
-   */
-  public function fieldValueEquals($field, $value, TraversableElement $container = NULL) {
-    parent::fieldValueEquals($field, (string) $value, $container);
-  }
-
-  /**
-   * 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.
-   * @param string $message
-   *   (optional) A message to display with the assertion. Do not translate
-   *   messages: use \Drupal\Component\Utility\SafeMarkup::format() to embed
-   *   variables in the message text, not t(). If left blank, a default message
-   *   will be displayed.
-   *
-   * @throws \Behat\Mink\Exception\ExpectationException
-   *   Thrown when element doesn't exist, or the link label is a different one.
-   */
-  public function linkByHrefExists($href, $index = 0, $message = '') {
-    // Cast MarkupInterface objects to string.
-    $xpath = $this->buildXPathQuery('//a[contains(@href, :href)]', [':href' => $href]);
-    $message = ($message ? $message : strtr('Link containing href %href found.', ['%href' => $href]));
-    $links = $this->session->getPage()->findAll('xpath', $xpath);
-    if (empty($links[$index])) {
-      throw new ExpectationException($message);
-    }
-    $this->assert($links[$index] !== NULL, $message);
-  }
-
-  /**
-   * 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.
-   * @param int $index
-   *   Link position counting from zero.
-   * @param string $message
-   *   (optional) A message to display with the assertion. Do not translate
-   *   messages: use \Drupal\Component\Utility\SafeMarkup::format() to embed
-   *   variables in the message text, not t(). If left blank, a default message
-   *   will be displayed.
-   *
-   * @throws \Behat\Mink\Exception\ExpectationException
-   *   Thrown when element doesn't exist, or the link label is a different one.
-   */
-  public function linkByHrefNotExists($href, $index = 0, $message = '') {
-    // Cast MarkupInterface objects to string.
-    $xpath = $this->buildXPathQuery('//a[contains(@href, :href)]', [':href' => $href]);
-    $message = ($message ? $message : strtr('Link containing href %href found.', ['%href' => $href]));
-    $links = $this->session->getPage()->findAll('xpath', $xpath);
-    if (!empty($links[$index])) {
-      throw new ExpectationException($message);
-    }
-    else {
-      $this->assert(TRUE, $message);
-    }
-  }
-
-  /**
-   * 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 $args
-   *   An array of arguments with keys in the form ':name' matching the
-   *   placeholders in the query. The values may be either strings or numeric
-   *   values.
-   *
-   * @return string
-   *   An XPath query with arguments replaced.
-   */
-  public function buildXPathQuery($xpath, array $args = array()) {
-    // Replace placeholders.
-    foreach ($args as $placeholder => $value) {
-      // Cast MarkupInterface objects to string.
-      if (is_object($value)) {
-        $value = (string) $value;
-      }
-      // XPath 1.0 doesn't support a way to escape single or double quotes in a
-      // string literal. We split double quotes out of the string, and encode
-      // them separately.
-      if (is_string($value)) {
-        // Explode the text at the quote characters.
-        $parts = explode('"', $value);
-
-        // Quote the parts.
-        foreach ($parts as &$part) {
-          $part = '"' . $part . '"';
-        }
-
-        // Return the string.
-        $value = count($parts) > 1 ? 'concat(' . implode(', \'"\', ', $parts) . ')' : $parts[0];
-      }
-
-      // Use preg_replace_callback() instead of preg_replace() to prevent the
-      // regular expression engine from trying to substitute backreferences.
-      $replacement = function ($matches) use ($value) {
-        return $value;
-      };
-      $xpath = preg_replace_callback('/' . preg_quote($placeholder) . '\b/', $replacement, $xpath);
-    }
-    return $xpath;
-  }
-
-  /**
    * Passes if the raw text IS NOT found escaped on the loaded page.
    *
    * Raw text refers to the raw HTML that the page generated.