public void GetInputFilePath_ReturnsInput_WhenNotNullOrEmtpyAndFileExists() { // Arrange var filePath = fixture.Create <string>(); _fileServiceMock.Setup(s => s.FileExists(It.IsAny <string>())).Returns(true); // Act var response = _sut.GetInputFilePath(filePath); // Assert Assert.AreEqual(filePath, response); _userFeedbackServiceMock.Verify(s => s.GetInputFileLocation(), Times.Never); }