public void Main_WithTwoValidCommands_ExitsProgramWhenEmptyStringIsEntered()
{
// Arrange
Mock <IStringCalculator> mockCalculator = new Mock <IStringCalculator>();
Mock <IConsole> mockConsole = new Mock <IConsole>();
mockCalculator.Setup(c => c.Add("1,2,3")).Returns(6);
mockCalculator.Setup(c => c.Add("3")).Returns(3);
mockCalculator.Setup(c => c.Add("5")).Returns(5);
mockConsole.SetupSequence(c => c.ReadLine())
.Returns("3")
.Returns("5")
.Returns("");
StringCalculatorConsole1 stringCalculatorConsole = CreateCalcConsole(mockCalculator, mockConsole);
// Act
stringCalculatorConsole.Main(new string[] { "scalc '1,2,3'" });
// Assert
mockConsole.Verify(c => c.WriteLine("The result is 6"));
mockConsole.Verify(c => c.WriteLine("another input please"), Times.Exactly(3));
mockConsole.Verify(c => c.WriteLine("The result is 3"));
mockConsole.Verify(c => c.WriteLine("The result is 5"));
mockConsole.Verify(c => c.ReadLine(), Times.Exactly(3));
}
private void VerifyConsoleOutput(string input, string consoleOutput, Mock <IStringCalculator> mockCalculator)
{
// Arrange
Mock <IConsole> mockConsole = new Mock <IConsole>();
StringCalculatorConsole1 scConsole = CreateCalcConsole(mockCalculator, mockConsole);
// Act
scConsole.Main(new string[] { input });
// Assert
mockConsole.Verify(c => c.WriteLine(consoleOutput));
}
public void Main_WithInvalidCommand_DisplaysNothingToTheConsole()
{
// Arrange
Mock <IConsole> mockConsole = new Mock <IConsole>();
StringCalculatorConsole1 scConsole = CreateCalcConsole(mockConsole);
// Act
scConsole.Main(new string[] { "1,2,3" });
// Assert
mockConsole.Verify(c => c.WriteLine(It.IsAny <string>()), Times.Never());
}
public void Main_WithAValidCommand_PromptsForAnotherNumber()
{
// Arrange
Mock <IStringCalculator> mockCalculator = new Mock <IStringCalculator>();
Mock <IConsole> mockConsole = new Mock <IConsole>();
mockCalculator.Setup(c => c.Add("1,2,3")).Returns(6);
StringCalculatorConsole1 stringCalculatorConsole = CreateCalcConsole(mockCalculator, mockConsole);
// Act
stringCalculatorConsole.Main(new string[] { "scalc '1,2,3'" });
// Assert
mockConsole.Verify(c => c.WriteLine("The result is 6"));
mockConsole.Verify(c => c.WriteLine("another input please"));
mockConsole.Verify(c => c.ReadLine(), Times.Once());
}