public void PersonConverterTest() { var inputter = new Mock <IPersonInputter>(); var parser = new Mock <IPersonParser>(); var outputter = new Mock <IPersonOutputter>(); inputter .Setup(i => i.GetPersonData()) .Returns(tmpStrArray); parser .Setup(p => p.ParseToPersonEntity(tmpStrArray)) .Returns(tmpPersonArray); var converter = new PersonConverter(inputter.Object, parser.Object, outputter.Object); converter.Convert(); inputter.Verify(i => i.GetPersonData(), Times.Once); parser.Verify(p => p.ParseToPersonEntity(tmpStrArray), Times.Once); outputter.Verify(o => o.OutputPersons(tmpPersonArray), Times.Once); Assert.Throws <ArgumentNullException>( "inputter", () => new PersonConverter(null, parser.Object, outputter.Object)); Assert.Throws <ArgumentNullException>( "parser", () => new PersonConverter(inputter.Object, null, outputter.Object)); Assert.Throws <ArgumentNullException>( "outputter", () => new PersonConverter(inputter.Object, parser.Object, null)); }