public void ValidateFailureForEmptyQueryString() { systemUnderTest.QueryString = string.Empty; systemUnderTest.ValidateFailure(); FluentActions.Invoking(() => systemUnderTest.ValidateFailure()) .Should() .NotThrow(); systemUnderTest.FailedValidation.Should().BeTrue(); systemUnderTest.FailedValidationMessage.Should().Contain("Enter correct Filter Query"); }