Move several unit tests to directly subclass PHPUnit_Framework_TestCase

Change-Id: I306166c116b9787a5568e5289799440dd1030345

tests/phpunit/includes/MimeMagicTest.php

@@ -1,5 +1,5 @@
 <?php
-class MimeMagicTest extends MediaWikiTestCase {
+class MimeMagicTest extends PHPUnit_Framework_TestCase {
 
 	/** @var MimeMagic */
 	private $mimeMagic;

tests/phpunit/includes/SanitizerValidateEmailTest.php

@@ -5,7 +5,7 @@
  * @todo all test methods in this class should be refactored and...
  *    use a single test method and a single data provider...
  */
-class SanitizerValidateEmailTest extends MediaWikiTestCase {
+class SanitizerValidateEmailTest extends PHPUnit_Framework_TestCase {
 
 	private function checkEmail( $addr, $expected = true, $msg = '' ) {
 		if ( $msg == '' ) {

tests/phpunit/includes/TitleArrayFromResultTest.php

@@ -4,7 +4,7 @@
  * @author Adam Shorland
  * @covers TitleArrayFromResult
  */
-class TitleArrayFromResultTest extends MediaWikiTestCase {
+class TitleArrayFromResultTest extends PHPUnit_Framework_TestCase {
 
 	private function getMockResultWrapper( $row = null, $numRows = 1 ) {
 		$resultWrapper = $this->getMockBuilder( 'ResultWrapper' )

tests/phpunit/includes/XmlJsTest.php

@@ -3,7 +3,7 @@
 /**
  * @group Xml
  */
-class XmlJs extends MediaWikiTestCase {
+class XmlJs extends PHPUnit_Framework_TestCase {
 
 	/**
 	 * @covers XmlJsCode::__construct