public function testHash() { $mediaType = $this->prophesize('Temp\\MediaClassifier\\Model\\MediaType'); $mediaType->__toString()->willReturn('abc'); $mediaType->getMimetypes()->willReturn([]); $mediaType->getHash()->willReturn('abc')->shouldBeCalled(); $this->mediatypes->add($mediaType->reveal()); $this->assertNotEmpty($this->mediatypes->getHash()); }