public function testAddParams() { $firstParams = ['foo' => 'bar', 'bar' => 'baz']; $secondParams = ['quu' => 'baz', 'bar' => 'foo']; $event = new Event(); $event->addParams($firstParams); $event->addParams($secondParams); $this->assertSame(array_merge($firstParams, $secondParams), $event->getParams()); }