public function testGetSwatchMediaUrl() { $storeMock = $this->getMock('\\Magento\\Store\\Model\\Store', ['getBaseUrl'], [], '', false); $this->storeManagerMock->expects($this->once())->method('getStore')->willReturn($storeMock); $storeMock->expects($this->once())->method('getBaseUrl')->with('media')->willReturn('http://url/pub/media/'); $result = $this->mediaHelperObject->getSwatchMediaUrl(); $this->assertEquals($result, 'http://url/pub/media/attribute/swatch'); }