public void TestGetRelativePath()
{
var environmentPathServiceMock = new Mock <IEnvironmentPathService>();
environmentPathServiceMock
.Setup(m => m.GetRelativePath(Directory, File))
.Returns(FullPath);
var pathService = new PathService(environmentPathServiceMock.Object);
var path = pathService.GetRelativePath(Directory, File);
Assert.Equal(FullPath, path);
}