1 files changed, 283 insertions, 0 deletions
diff --git a/tests/lib/Hooks/BasicEmitterTest.php b/tests/lib/Hooks/BasicEmitterTest.php
new file mode 100644
index 00000000000..6c00da2eaa3
--- /dev/null
+++ b/tests/lib/Hooks/BasicEmitterTest.php
@@ -0,0 +1,283 @@
+<?php
+
+/**
+ * SPDX-FileCopyrightText: 2018-2024 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-FileCopyrightText: 2016 ownCloud, Inc.
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+
+namespace Test\Hooks;
+
+use OC\Hooks\BasicEmitter;
+use OC\Hooks\Emitter;
+
+/**
+ * Class DummyEmitter
+ *
+ * class to make BasicEmitter::emit publicly available
+ *
+ * @package Test\Hooks
+ */
+class DummyEmitter extends BasicEmitter {
+	public function emitEvent($scope, $method, $arguments = []) {
+		$this->emit($scope, $method, $arguments);
+	}
+}
+
+/**
+ * Class EmittedException
+ *
+ * a dummy exception so we can check if an event is emitted
+ *
+ * @package Test\Hooks
+ */
+class EmittedException extends \Exception {
+}
+
+class BasicEmitterTest extends \Test\TestCase {
+	/**
+	 * @var Emitter $emitter
+	 */
+	protected $emitter;
+
+	protected function setUp(): void {
+		parent::setUp();
+		$this->emitter = new DummyEmitter();
+	}
+
+	public function nonStaticCallBack() {
+		throw new EmittedException;
+	}
+
+	public static function staticCallBack() {
+		throw new EmittedException;
+	}
+
+
+	public function testAnonymousFunction(): void {
+		$this->expectException(\Test\Hooks\EmittedException::class);
+
+		$this->emitter->listen('Test', 'test', function (): void {
+			throw new EmittedException;
+		});
+		$this->emitter->emitEvent('Test', 'test');
+	}
+
+
+	public function testStaticCallback(): void {
+		$this->expectException(\Test\Hooks\EmittedException::class);
+
+		$this->emitter->listen('Test', 'test', ['\Test\Hooks\BasicEmitterTest', 'staticCallBack']);
+		$this->emitter->emitEvent('Test', 'test');
+	}
+
+
+	public function testNonStaticCallback(): void {
+		$this->expectException(\Test\Hooks\EmittedException::class);
+
+		$this->emitter->listen('Test', 'test', [$this, 'nonStaticCallBack']);
+		$this->emitter->emitEvent('Test', 'test');
+	}
+
+	public function testOnlyCallOnce(): void {
+		$count = 0;
+		$listener = function () use (&$count): void {
+			$count++;
+		};
+		$this->emitter->listen('Test', 'test', $listener);
+		$this->emitter->listen('Test', 'test', $listener);
+		$this->emitter->emitEvent('Test', 'test');
+		$this->assertEquals(1, $count, 'Listener called an invalid number of times (' . $count . ') expected 1');
+	}
+
+	public function testDifferentMethods(): void {
+		$count = 0;
+		$listener = function () use (&$count): void {
+			$count++;
+		};
+		$this->emitter->listen('Test', 'test', $listener);
+		$this->emitter->listen('Test', 'foo', $listener);
+		$this->emitter->emitEvent('Test', 'test');
+		$this->emitter->emitEvent('Test', 'foo');
+		$this->assertEquals(2, $count, 'Listener called an invalid number of times (' . $count . ') expected 2');
+	}
+
+	public function testDifferentScopes(): void {
+		$count = 0;
+		$listener = function () use (&$count): void {
+			$count++;
+		};
+		$this->emitter->listen('Test', 'test', $listener);
+		$this->emitter->listen('Bar', 'test', $listener);
+		$this->emitter->emitEvent('Test', 'test');
+		$this->emitter->emitEvent('Bar', 'test');
+		$this->assertEquals(2, $count, 'Listener called an invalid number of times (' . $count . ') expected 2');
+	}
+
+	public function testDifferentCallbacks(): void {
+		$count = 0;
+		$listener1 = function () use (&$count): void {
+			$count++;
+		};
+		$listener2 = function () use (&$count): void {
+			$count++;
+		};
+		$this->emitter->listen('Test', 'test', $listener1);
+		$this->emitter->listen('Test', 'test', $listener2);
+		$this->emitter->emitEvent('Test', 'test');
+		$this->assertEquals(2, $count, 'Listener called an invalid number of times (' . $count . ') expected 2');
+	}
+
+
+	public function testArguments(): void {
+		$this->expectException(\Test\Hooks\EmittedException::class);
+
+		$this->emitter->listen('Test', 'test', function ($foo, $bar): void {
+			if ($foo == 'foo' and $bar == 'bar') {
+				throw new EmittedException;
+			}
+		});
+		$this->emitter->emitEvent('Test', 'test', ['foo', 'bar']);
+	}
+
+
+	public function testNamedArguments(): void {
+		$this->expectException(\Test\Hooks\EmittedException::class);
+
+		$this->emitter->listen('Test', 'test', function ($foo, $bar): void {
+			if ($foo == 'foo' and $bar == 'bar') {
+				throw new EmittedException;
+			}
+		});
+		$this->emitter->emitEvent('Test', 'test', ['foo' => 'foo', 'bar' => 'bar']);
+	}
+
+	public function testRemoveAllSpecified(): void {
+		$listener = function (): void {
+			throw new EmittedException;
+		};
+		$this->emitter->listen('Test', 'test', $listener);
+		$this->emitter->removeListener('Test', 'test', $listener);
+		$this->emitter->emitEvent('Test', 'test');
+
+		$this->addToAssertionCount(1);
+	}
+
+	public function testRemoveWildcardListener(): void {
+		$listener1 = function (): void {
+			throw new EmittedException;
+		};
+		$listener2 = function (): void {
+			throw new EmittedException;
+		};
+		$this->emitter->listen('Test', 'test', $listener1);
+		$this->emitter->listen('Test', 'test', $listener2);
+		$this->emitter->removeListener('Test', 'test');
+		$this->emitter->emitEvent('Test', 'test');
+
+		$this->addToAssertionCount(1);
+	}
+
+	public function testRemoveWildcardMethod(): void {
+		$listener = function (): void {
+			throw new EmittedException;
+		};
+		$this->emitter->listen('Test', 'test', $listener);
+		$this->emitter->listen('Test', 'foo', $listener);
+		$this->emitter->removeListener('Test', null, $listener);
+		$this->emitter->emitEvent('Test', 'test');
+		$this->emitter->emitEvent('Test', 'foo');
+
+		$this->addToAssertionCount(1);
+	}
+
+	public function testRemoveWildcardScope(): void {
+		$listener = function (): void {
+			throw new EmittedException;
+		};
+		$this->emitter->listen('Test', 'test', $listener);
+		$this->emitter->listen('Bar', 'test', $listener);
+		$this->emitter->removeListener(null, 'test', $listener);
+		$this->emitter->emitEvent('Test', 'test');
+		$this->emitter->emitEvent('Bar', 'test');
+
+		$this->addToAssertionCount(1);
+	}
+
+	public function testRemoveWildcardScopeAndMethod(): void {
+		$listener = function (): void {
+			throw new EmittedException;
+		};
+		$this->emitter->listen('Test', 'test', $listener);
+		$this->emitter->listen('Test', 'foo', $listener);
+		$this->emitter->listen('Bar', 'foo', $listener);
+		$this->emitter->removeListener(null, null, $listener);
+		$this->emitter->emitEvent('Test', 'test');
+		$this->emitter->emitEvent('Test', 'foo');
+		$this->emitter->emitEvent('Bar', 'foo');
+
+		$this->addToAssertionCount(1);
+	}
+
+
+	public function testRemoveKeepOtherCallback(): void {
+		$this->expectException(\Test\Hooks\EmittedException::class);
+
+		$listener1 = function (): void {
+			throw new EmittedException;
+		};
+		$listener2 = function (): void {
+			throw new EmittedException;
+		};
+		$this->emitter->listen('Test', 'test', $listener1);
+		$this->emitter->listen('Test', 'test', $listener2);
+		$this->emitter->removeListener('Test', 'test', $listener1);
+		$this->emitter->emitEvent('Test', 'test');
+
+		$this->addToAssertionCount(1);
+	}
+
+
+	public function testRemoveKeepOtherMethod(): void {
+		$this->expectException(\Test\Hooks\EmittedException::class);
+
+		$listener = function (): void {
+			throw new EmittedException;
+		};
+		$this->emitter->listen('Test', 'test', $listener);
+		$this->emitter->listen('Test', 'foo', $listener);
+		$this->emitter->removeListener('Test', 'foo', $listener);
+		$this->emitter->emitEvent('Test', 'test');
+
+		$this->addToAssertionCount(1);
+	}
+
+
+	public function testRemoveKeepOtherScope(): void {
+		$this->expectException(\Test\Hooks\EmittedException::class);
+
+		$listener = function (): void {
+			throw new EmittedException;
+		};
+		$this->emitter->listen('Test', 'test', $listener);
+		$this->emitter->listen('Bar', 'test', $listener);
+		$this->emitter->removeListener('Bar', 'test', $listener);
+		$this->emitter->emitEvent('Test', 'test');
+
+		$this->addToAssertionCount(1);
+	}
+
+
+	public function testRemoveNonExistingName(): void {
+		$this->expectException(\Test\Hooks\EmittedException::class);
+
+		$listener = function (): void {
+			throw new EmittedException;
+		};
+		$this->emitter->listen('Test', 'test', $listener);
+		$this->emitter->removeListener('Bar', 'test', $listener);
+		$this->emitter->emitEvent('Test', 'test');
+
+		$this->addToAssertionCount(1);
+	}
+}