public void InstallPrinter_InvalidPrinterPath_ShouldThrowArgumentException(string printerPath)
{
// Arrange
var printerService = new PrinterService(Mock.Of <ICommandService>());
// Act
Action action = () => printerService.InstallPrinter(printerPath);
// Assert
action.Should().Throw <ArgumentException>()
.Which.ParamName.Should().Be("printerPath");
}
public void InstallPrinter_SomePrinterPath_ShouldExecuteCorrectCommand()
{
// Arrange
var printerPath = @"\\RemoteComputer\Remote Printer";
var runDll32Path =
Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.System), "rundll32.exe");
var commandServiceMock = new Mock <ICommandService>();
commandServiceMock
.Setup(x => x.Execute(It.IsAny <string>(), It.IsAny <string[]>()))
.Returns(new CommandExecutionResult(new[] { "Success" }, 0));
var printerService = new PrinterService(commandServiceMock.Object);
// Act
printerService.InstallPrinter(printerPath);
// Assert
commandServiceMock.Verify(x => x.Execute(runDll32Path, "printui.dll,PrintUIEntry", "/in", $"/n\"{printerPath}\""), Times.Once);
}