public void ShouldYieldTheSameResult()
{
var fileSystem = new Mock<IFileSystem>();
fileSystem.SetupGet(x => x.CurrentDirectory).Returns("C:\\");
fileSystem.Setup(x => x.FileExists("C:\\TestView.xaml")).Returns(true);
var viewLocator = new ViewLocator(fileSystem.Object);
var result = viewLocator.LocateViewFor("TestViewModel");
var secondResult = viewLocator.LocateViewFor<TestViewModel>();
result.ShouldEqual(secondResult);
}
public void ShouldReturnCorrectFileName(string viewModel, string fileName)
{
var fileSystem = new Mock<IFileSystem>();
fileSystem.SetupGet(x => x.CurrentDirectory).Returns(string.Empty);
fileSystem.Setup(x => x.FileExists(It.IsAny<string>())).Returns(true);
var viewLocator = new ViewLocator(fileSystem.Object);
var result = viewLocator.LocateViewFor(viewModel);
result.ShouldEqual(fileName);
}
public void ShouldThrowIfTypeNameDoesntEndWithViewModel()
{
var fileSystem = new Mock<IFileSystem>();
var viewLocator = new ViewLocator(fileSystem.Object);
var exception = Assert.Throws<InvalidOperationException>(() => viewLocator.LocateViewFor("SomeClass"));
exception.Message.ShouldContain("The ViewModel type name has to end with 'ViewModel'");
}
public void ShouldThrowIfFileDoesntExist()
{
var fileSystem = new Mock<IFileSystem>();
fileSystem.SetupGet(x => x.CurrentDirectory).Returns("C:\\");
fileSystem.Setup(x => x.FileExists(It.IsAny<string>())).Returns(false);
var viewLocator = new ViewLocator(fileSystem.Object);
var exception = Assert.Throws<InvalidOperationException>(() => viewLocator.LocateViewFor("TestViewModel"));
exception.Message.ShouldContain("Tried: C:\\TestView.xaml");
}
public void ShouldThrowOnEmptyFileName()
{
var fileSystem = new Mock<IFileSystem>();
fileSystem.SetupGet(x => x.CurrentDirectory).Returns("C:\\");
fileSystem.Setup(x => x.FileExists(It.IsAny<string>())).Returns(false);
var viewLocator = new ViewLocator(fileSystem.Object);
var exception = Assert.Throws<ArgumentNullException>(() => viewLocator.LocateViewFor(string.Empty));
exception.Message.ShouldContain("Parameter name: viewModelName");
}