public function testSetIsPassedByReference() { $param = new PhpParameter(); $this->assertFalse($param->isPassedByReference()); $this->assertSame($param, $param->setPassedByReference(true)); $this->assertTrue($param->isPassedByReference()); $this->assertSame($param, $param->setPassedByReference(false)); $this->assertFalse($param->isPassedByReference()); }