public void GivenText_WhenRemoveNonAlphaCharacters_ReturnsNonAlphaCharactersString( StringCleanerService service, string sampleText ) { // ARRANGE var badInput = new List <string> { "-", "*" }; // ACT var results = service.RemoveNonAlphaCharacters(sampleText); //ASSERT results.Should().NotBeNullOrEmpty(); results.Should().NotContainAny(badInput); }