public void InputviewEngines_InstanceOf_ThrowsInvalidOperationExceptionIfMoreThanOnceInstance()
{
// Arrange
var viewEngines = new MvcViewOptions().ViewEngines;
viewEngines.Add(new TestViewEngine());
viewEngines.Add(Mock.Of<IViewEngine>());
viewEngines.Add(new TestViewEngine());
// Act & Assert
Assert.Throws<InvalidOperationException>(() => viewEngines.InstanceOf<TestViewEngine>());
}
public void InputviewEngines_InstanceOf_ThrowsInvalidOperationExceptionIfNoInstance()
{
// Arrange
var viewEngines = new MvcViewOptions().ViewEngines;
viewEngines.Add(Mock.Of <IViewEngine>());
viewEngines.Add(typeof(TestViewEngine));
// Act & Assert
Assert.Throws <InvalidOperationException>(() => viewEngines.InstanceOf <TestViewEngine>());
}
public void InputviewEngines_InstanceOf_ReturnsInstanceOfIInputFormatterIfOneExists()
{
// Arrange
var viewEngines = new MvcViewOptions().ViewEngines;
viewEngines.Add(Mock.Of <IViewEngine>());
var testEngine = new TestViewEngine();
viewEngines.Add(testEngine);
viewEngines.Add(typeof(TestViewEngine));
// Act
var formatter = viewEngines.InstanceOf <TestViewEngine>();
// Assert
Assert.NotNull(formatter);
Assert.IsType <TestViewEngine>(formatter);
Assert.Same(testEngine, formatter);
}
public void InputviewEngines_InstanceOf_ReturnsInstanceOfIInputFormatterIfOneExists()
{
// Arrange
var viewEngines = new MvcViewOptions().ViewEngines;
viewEngines.Add(Mock.Of<IViewEngine>());
var testEngine = new TestViewEngine();
viewEngines.Add(testEngine);
viewEngines.Add(typeof(TestViewEngine));
// Act
var formatter = viewEngines.InstanceOf<TestViewEngine>();
// Assert
Assert.NotNull(formatter);
Assert.IsType<TestViewEngine>(formatter);
Assert.Same(testEngine, formatter);
}