public void FindView_ReturnsNotFound_IfAllViewEnginesReturnNotFound()
{
// Arrange
var viewName = "foo";
var engine1 = new Mock <IViewEngine>(MockBehavior.Strict);
var engine2 = new Mock <IViewEngine>(MockBehavior.Strict);
var engine3 = new Mock <IViewEngine>(MockBehavior.Strict);
engine1
.Setup(e => e.FindView(It.IsAny <ActionContext>(), viewName, /*isMainPage*/ false))
.Returns(ViewEngineResult.NotFound(viewName, new[] { "1", "2" }));
engine2
.Setup(e => e.FindView(It.IsAny <ActionContext>(), viewName, /*isMainPage*/ false))
.Returns(ViewEngineResult.NotFound(viewName, new[] { "3" }));
engine3
.Setup(e => e.FindView(It.IsAny <ActionContext>(), viewName, /*isMainPage*/ false))
.Returns(ViewEngineResult.NotFound(viewName, new[] { "4", "5" }));
var optionsAccessor = Options.Create(new MvcViewOptions());
optionsAccessor.Value.ViewEngines.Add(engine1.Object);
optionsAccessor.Value.ViewEngines.Add(engine2.Object);
optionsAccessor.Value.ViewEngines.Add(engine3.Object);
var compositeViewEngine = new CompositeViewEngine(optionsAccessor);
// Act
var result = compositeViewEngine.FindView(GetActionContext(), viewName, isMainPage: false);
// Assert
Assert.False(result.Success);
Assert.Equal(new[] { "1", "2", "3", "4", "5" }, result.SearchedLocations);
}
public void FindView_ReturnsViewFromFirstViewEngineWithFoundResult()
{
// Arrange
var viewName = "bar";
var engine1 = new Mock <IViewEngine>(MockBehavior.Strict);
var engine2 = new Mock <IViewEngine>(MockBehavior.Strict);
var engine3 = new Mock <IViewEngine>(MockBehavior.Strict);
var view2 = Mock.Of <IView>();
var view3 = Mock.Of <IView>();
engine1
.Setup(e => e.FindView(It.IsAny <ActionContext>(), viewName, /*isMainPage*/ false))
.Returns(ViewEngineResult.NotFound(viewName, Enumerable.Empty <string>()));
engine2
.Setup(e => e.FindView(It.IsAny <ActionContext>(), viewName, /*isMainPage*/ false))
.Returns(ViewEngineResult.Found(viewName, view2));
engine3
.Setup(e => e.FindView(It.IsAny <ActionContext>(), viewName, /*isMainPage*/ false))
.Returns(ViewEngineResult.Found(viewName, view3));
var optionsAccessor = Options.Create(new MvcViewOptions());
optionsAccessor.Value.ViewEngines.Add(engine1.Object);
optionsAccessor.Value.ViewEngines.Add(engine2.Object);
optionsAccessor.Value.ViewEngines.Add(engine3.Object);
var compositeViewEngine = new CompositeViewEngine(optionsAccessor);
// Act
var result = compositeViewEngine.FindView(GetActionContext(), viewName, isMainPage: false);
// Assert
Assert.True(result.Success);
Assert.Same(view2, result.View);
Assert.Equal(viewName, result.ViewName);
}
/// <summary> Locate a view by name using all view location search paths. </summary>
/// <param name="context"> The controller action context. </param>
/// <param name="viewName"> The name or path of the view that is rendered to the response. </param>
/// <param name="isMainPage"> Determines if the page being found is the main page for an action.. </param>
/// <returns> The found view. </returns>
public ViewEngineResult FindView(ActionContext context, string viewName, bool isMainPage)
{
var result = _CompositeViewEngine.FindView(context, viewName, isMainPage);
if (result.Success)
{
var newResult = ((result.View as RazorView)?.RazorPage as IViewPageRenderEvents)?.OnViewFound(context, result);
result = newResult ?? ViewEngineResult.Found(result.ViewName, new ViewResultProxy(result.View));
}
return(result);
}
public void FindView_ReturnsNotFoundResult_WhenNoViewEnginesAreRegistered()
{
// Arrange
var viewName = "my-partial-view";
var optionsAccessor = new TestOptionsManager <MvcViewOptions>();
var compositeViewEngine = new CompositeViewEngine(optionsAccessor);
// Act
var result = compositeViewEngine.FindView(GetActionContext(), viewName, isMainPage: false);
// Assert
Assert.False(result.Success);
Assert.Empty(result.SearchedLocations);
}
public void FindView_ReturnsNotFoundResult_WhenNoViewEnginesAreRegistered()
{
// Arrange
var expected = $"'{typeof(MvcViewOptions).FullName}.{nameof(MvcViewOptions.ViewEngines)}' must not be " +
$"empty. At least one '{typeof(IViewEngine).FullName}' is required to locate a view for rendering.";
var viewName = "my-partial-view";
var optionsAccessor = Options.Create(new MvcViewOptions());
var compositeViewEngine = new CompositeViewEngine(optionsAccessor);
// Act & AssertS
var exception = Assert.Throws <InvalidOperationException>(
() => compositeViewEngine.FindView(GetActionContext(), viewName, isMainPage: false));
Assert.Equal(expected, exception.Message);
}
public void FindView_IsMainPage_Throws_WhenNoViewEnginesAreRegistered()
{
// Arrange
var expected = $"'{typeof(MvcViewOptions).FullName}.{nameof(MvcViewOptions.ViewEngines)}' must not be " +
$"empty. At least one '{typeof(IViewEngine).FullName}' is required to locate a view for rendering.";
var viewName = "test-view";
var actionContext = GetActionContext();
var optionsAccessor = new TestOptionsManager <MvcViewOptions>();
var compositeViewEngine = new CompositeViewEngine(optionsAccessor);
// Act & Assert
var exception = Assert.Throws <InvalidOperationException>(
() => compositeViewEngine.FindView(actionContext, viewName, isMainPage: true));
Assert.Equal(expected, exception.Message);
}
public void FindView_IsMainPage_ReturnsNotFoundResult_WhenExactlyOneViewEngineIsRegisteredWhichReturnsNotFoundResult()
{
// Arrange
var viewName = "test-view";
var engine = new Mock <IViewEngine>(MockBehavior.Strict);
engine
.Setup(e => e.FindView(It.IsAny <ActionContext>(), viewName, /*isMainPage*/ true))
.Returns(ViewEngineResult.NotFound(viewName, new[] { "controller/test-view" }));
var optionsAccessor = Options.Create(new MvcViewOptions());
optionsAccessor.Value.ViewEngines.Add(engine.Object);
var compositeViewEngine = new CompositeViewEngine(optionsAccessor);
// Act
var result = compositeViewEngine.FindView(GetActionContext(), viewName, isMainPage: true);
// Assert
Assert.False(result.Success);
Assert.Equal(new[] { "controller/test-view" }, result.SearchedLocations);
}
public void FindView_IsMainPage_ReturnsView_WhenExactlyOneViewEngineIsRegisteredWhichReturnsAFoundResult()
{
// Arrange
var viewName = "test-view";
var engine = new Mock <IViewEngine>(MockBehavior.Strict);
var view = Mock.Of <IView>();
engine
.Setup(e => e.FindView(It.IsAny <ActionContext>(), viewName, /*isMainPage*/ true))
.Returns(ViewEngineResult.Found(viewName, view));
var optionsAccessor = Options.Create(new MvcViewOptions());
optionsAccessor.Value.ViewEngines.Add(engine.Object);
var compositeViewEngine = new CompositeViewEngine(optionsAccessor);
// Act
var result = compositeViewEngine.FindView(GetActionContext(), viewName, isMainPage: true);
// Assert
Assert.True(result.Success);
Assert.Same(view, result.View);
}