public void PrintToOutputStream()
{
var OutputMock = new Mock <TextWriter>();
string outbuffer = "";
OutputMock.Setup(console => console.Write(It.IsAny <string>()))
.Callback((string s) => outbuffer += s);
OutputMock.Setup(console => console.WriteLine(It.IsAny <string>()))
.Callback((string s) => outbuffer += s + Environment.NewLine);
OutputMock.Setup(console => console.WriteLine())
.Callback(() => outbuffer += Environment.NewLine);
var printer = new CanvasPrinter(OutputMock.Object);
ICanvas canvas = new SimpleCanvas(2, 2);
printer.Print(canvas);
string expected = "----" + Environment.NewLine +
"| |" + Environment.NewLine +
"| |" + Environment.NewLine +
"----" + Environment.NewLine + Environment.NewLine;
Assert.Equal(expected, outbuffer);
}
private void SetCanvasPrinter(CanvasPrinter value)
{
if (canvasPrinter != null)
{
// unregister
canvasPrinter.UnregisterEvents(OnNodeItemAdded, OnNodeItemRemoved);
}
// save reference
canvasPrinter = value;
if (canvasPrinter != null)
{
// register
canvasPrinter.RegisterEvents(OnNodeItemAdded, OnNodeItemRemoved);
}
}
public void OverallCanvasTest()
{
// This is for fun, It is possible to execute all the code with System.Console
// when using Moq!!
var textReaderMock = new Mock <TextReader>();
var textOutputMock = new Mock <TextWriter>();
var textErrorMock = new Mock <TextWriter>();
string outbuffer = "";
ICanvas canvas = null;
textReaderMock.SetupSequence(console => console.ReadLine())
.Returns("C 20 4")
.Returns("L 1 2 6 2")
.Returns("L 6 3 6 4")
.Returns("R 14 1 18 3")
.Returns("B 10 3 o")
.Returns("Q");
textOutputMock.Setup(console => console.Write(It.IsAny <string>()))
.Callback((string s) => outbuffer += s);
textOutputMock.Setup(console => console.WriteLine(It.IsAny <string>()))
.Callback((string s) => outbuffer += s + Environment.NewLine);
textOutputMock.Setup(console => console.WriteLine())
.Callback(() => outbuffer += Environment.NewLine);
var canvasPrinterMock = new Mock <ICanvasPrinter>();
canvasPrinterMock.Setup(printer => printer.Print(It.IsAny <ICanvas>()))
.Callback((ICanvas c) => canvas = c);
var service = new DrawingService(
textReaderMock.Object,
textOutputMock.Object,
textErrorMock.Object,
canvasPrinterMock.Object);
service.Start();
canvasPrinterMock.Verify(printer => printer.Print(It.IsAny <ICanvas>()), Times.Exactly(5));
// verify the final canvas state
string verifyBuffer = "";
var verifyOutputMock = new Mock <TextWriter>();
verifyOutputMock.Setup(console => console.Write(It.IsAny <string>()))
.Callback((string s) => verifyBuffer += s);
verifyOutputMock.Setup(console => console.WriteLine())
.Callback(() => verifyBuffer += Environment.NewLine);
var verifyPrinter = new CanvasPrinter(verifyOutputMock.Object);
verifyPrinter.Print(canvas);
string expected = "----------------------" + Environment.NewLine +
"|oooooooooooooxxxxxoo|" + Environment.NewLine +
"|xxxxxxooooooox xoo|" + Environment.NewLine +
"| xoooooooxxxxxoo|" + Environment.NewLine +
"| xoooooooooooooo|" + Environment.NewLine +
"----------------------" + Environment.NewLine +
Environment.NewLine;
Assert.Equal(expected, verifyBuffer);
}
