diff --git a/tests/phpunit/tests/ajax/TagSearch.php b/tests/phpunit/tests/ajax/TagSearch.php
deleted file mode 100644
index 3a4f50296c..0000000000
--- a/tests/phpunit/tests/ajax/TagSearch.php
+++ /dev/null
@@ -1,155 +0,0 @@
-<?php
-
-/**
- * Admin ajax functions to be tested
- */
-require_once( ABSPATH . 'wp-admin/includes/ajax-actions.php' );
-
-/**
- * Testing ajax tag search functionality
- *
- * @package    WordPress
- * @subpackage UnitTests
- * @since      3.4.0
- * @group      ajax
- */
-class Tests_Ajax_TagSearch extends WP_Ajax_UnitTestCase {
-
-	/**
-	 * List of terms to insert on setup
-	 *
-	 * @var array
-	 */
-	private static $terms = array(
-		'chattels',
-		'depo',
-		'energumen',
-		'figuriste',
-		'habergeon',
-		'impropriation',
-	);
-
-	private static $term_ids = array();
-
-	public static function wpSetUpBeforeClass() {
-		foreach ( self::$terms as $t ) {
-			self::$term_ids[] = wp_insert_term( $t, 'post_tag' );
-		}
-	}
-
-	/**
-	 * Test as an admin
-	 */
-	public function test_post_tag() {
-
-		// Become an administrator
-		$this->_setRole( 'administrator' );
-
-		// Set up a default request
-		$_GET['tax'] = 'post_tag';
-		$_GET['q']   = 'chat';
-
-		// Make the request
-		try {
-			$this->_handleAjax( 'ajax-tag-search' );
-		} catch ( WPAjaxDieContinueException $e ) {
-			unset( $e );
-		}
-
-		// Ensure we found the right match
-		$this->assertEquals( $this->_last_response, 'chattels' );
-	}
-
-	/**
-	 * Test with no results
-	 */
-	public function test_no_results() {
-
-		// Become an administrator
-		$this->_setRole( 'administrator' );
-
-		// Set up a default request
-		$_GET['tax'] = 'post_tag';
-		$_GET['q']   = md5( uniqid() );
-
-		// Make the request
-		// No output, so we get a stop exception
-		$this->setExpectedException( 'WPAjaxDieStopException', '' );
-		$this->_handleAjax( 'ajax-tag-search' );
-	}
-
-	/**
-	 * Test with commas
-	 */
-	public function test_with_comma() {
-
-		// Become an administrator
-		$this->_setRole( 'administrator' );
-
-		// Set up a default request
-		$_GET['tax'] = 'post_tag';
-		$_GET['q']   = 'some,nonsense, terms,chat'; // Only the last term in the list is searched
-
-		// Make the request
-		try {
-			$this->_handleAjax( 'ajax-tag-search' );
-		} catch ( WPAjaxDieContinueException $e ) {
-			unset( $e );
-		}
-
-		// Ensure we found the right match
-		$this->assertEquals( $this->_last_response, 'chattels' );
-	}
-
-	/**
-	 * Test as a logged out user
-	 */
-	public function test_logged_out() {
-
-		// Log out
-		wp_logout();
-
-		// Set up a default request
-		$_GET['tax'] = 'post_tag';
-		$_GET['q']   = 'chat';
-
-		// Make the request
-		$this->setExpectedException( 'WPAjaxDieStopException', '-1' );
-		$this->_handleAjax( 'ajax-tag-search' );
-	}
-
-	/**
-	 * Test with an invalid taxonomy type
-	 */
-	public function test_invalid_tax() {
-
-		// Become an administrator
-		$this->_setRole( 'administrator' );
-
-		// Set up a default request
-		$_GET['tax'] = 'invalid-taxonomy';
-		$_GET['q']   = 'chat';
-
-		// Make the request
-		$this->setExpectedException( 'WPAjaxDieStopException', '0' );
-		$this->_handleAjax( 'ajax-tag-search' );
-	}
-
-	/**
-	 * Test as an unprivileged user
-	 */
-	public function test_unprivileged_user() {
-
-		// Become an administrator
-		$this->_setRole( 'subscriber' );
-
-		// Set up a default request
-		$_GET['tax'] = 'post_tag';
-		$_GET['q']   = 'chat';
-
-		// Make the request
-		$this->setExpectedException( 'WPAjaxDieStopException', '-1' );
-		$this->_handleAjax( 'ajax-tag-search' );
-	}
-
-}