support cross version phpunit (#92)

tests/CoreTest.php

@@ -4,11 +4,12 @@
  * SPDX-License-Identifier: Apache-2.0.
  */
 use AWS\CRT\CRT;
+use Yoast\PHPUnitPolyfills\TestCases\TestCase;
 
 require_once('common.inc');
 
 // This intentionally does not inherit from CrtTestCase because it needs a clean-room environment
-final class CoreTest extends PHPUnit_Framework_TestCase {
+final class CoreTest extends TestCase {
 
     // The CRT should always be available in this test suite
     public function testIsAvailable() {
@@ -19,4 +20,4 @@ final class CoreTest extends PHPUnit_Framework_TestCase {
     public function testIsLoaded() {
         $this->assertTrue(!CRT::isLoaded());
     }
-}
+}

tests/CrcTest.php

@@ -86,5 +86,5 @@ final class CrcTest extends CrtTestCase {
         $expected = 0x14298C12;
         $this->assertEquals($output, $expected);
     }
-    
+
 }

tests/ErrorTest.php

@@ -4,8 +4,9 @@
  * SPDX-License-Identifier: Apache-2.0.
  */
 use AWS\CRT\CRT;
+use Yoast\PHPUnitPolyfills\TestCases\TestCase;
 
-final class ErrorTest extends PHPUnit_Framework_TestCase {
+final class ErrorTest extends TestCase {
 
     public function testNoInitialError() {
         $this->assertEquals(0, CRT::last_error());

tests/common.inc

@@ -4,31 +4,27 @@
  * SPDX-License-Identifier: Apache-2.0.
  */
 use AWS\CRT\CRT as CRT;
+use Yoast\PHPUnitPolyfills\TestCases\TestCase;
 
 ini_set("memory_limit", "512M");
 
-abstract class CrtTestCase extends PHPUnit_Framework_TestCase {
+abstract class CrtTestCase extends TestCase {
     private static $crt = null;
-    public static function setUpBeforeClass() {
+    public static function set_up_before_class() {
+        parent::set_up_before_class();
         self::$crt = new CRT();
     }
 
-    public static function tearDownAfterClass() {
+    public static function tear_down_after_class() {
         self::$crt = null;
+        parent::tear_down_after_class();
     }
 
     // Ensure that after every test there are no errors in the CRT itself
-    protected function assertPostConditions() {
+    protected function assert_post_conditions() {
         if (CRT::last_error()) {
             $this->fail("Test left an error on the stack: " . CRT::error_name(CRT::last_error()));
         }
-    }
-
-    // Shim missing calls in older versions of PHPUnit
-    public function __call($name, $arguments) {
-        // shim expectException -> setExpectedException for PHPUnit 4.8.x
-        if ($name == 'expectException') {
-            $this->setExpectedException($arguments[0]);
-        }
+        parent::assert_post_conditions();
     }
 }