First commit

sites/all/modules/civicrm/drupal/tests/phpunit/CiviDrupal/HookTest.php

@@ -0,0 +1,54 @@
+<?php
+
+namespace CiviDrupal {
+
+  use Civi\Test\EndToEndInterface;
+
+  /**
+   * Class HookTest
+   * @package CiviDrupal
+   * @group e2e
+   */
+  class HookTest extends \PHPUnit_Framework_TestCase implements EndToEndInterface {
+    public function testFoo() {
+      $arg1 = 'hello';
+      $arg2 = array(
+        'foo' => 123,
+      );
+      $this->assertNotEquals($arg2['foo'], 456);
+      $this->assertNotEquals($arg2['hook_was_called'], 1);
+
+      \CRM_Utils_Hook::singleton()
+        ->invoke(
+          2,
+          $arg1,
+          $arg2,
+          \CRM_Utils_Hook::$_nullObject,
+          \CRM_Utils_Hook::$_nullObject,
+          \CRM_Utils_Hook::$_nullObject,
+          \CRM_Utils_Hook::$_nullObject,
+          'civicrm_fakeAlterableHook'
+        );
+
+      $this->assertEquals($arg2['foo'], 456);
+      $this->assertEquals($arg2['hook_was_called'], 1);
+    }
+
+  }
+
+}
+
+namespace {
+
+  function civicrm_civicrm_fakeAlterableHook($arg1, &$arg2) {
+    if ($arg1 != 'hello') {
+      throw new \Exception("Failed to receive arg1");
+    }
+    if ($arg2['foo'] != 123) {
+      throw new \Exception("Failed to receive arg2[foo]");
+    }
+    $arg2['foo'] = 456;
+    $arg2['hook_was_called'] = 1;
+  }
+
+}