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DefaultViewLocatorTests.cs
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DefaultViewLocatorTests.cs
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// Copyright (c) 2019 .NET Foundation and Contributors. All rights reserved.
// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for full license information.
using System;
using Splat;
using Xunit;
namespace ReactiveUI.Tests
{
public class DefaultViewLocatorTests
{
[Fact]
public void ByDefaultViewModelIsReplacedWithViewWhenDeterminingTheServiceName()
{
var resolver = new ModernDependencyResolver();
resolver.InitializeSplat();
resolver.InitializeReactiveUI();
resolver.Register(() => new FooView(), typeof(IViewFor<FooViewModel>));
using (resolver.WithResolver())
{
var fixture = new DefaultViewLocator();
var vm = new FooViewModel();
var result = fixture.ResolveView(vm);
Assert.IsType<FooView>(result);
}
}
[Fact]
public void TheRuntimeTypeOfTheViewModelIsUsedToResolveTheView()
{
var resolver = new ModernDependencyResolver();
resolver.InitializeSplat();
resolver.InitializeReactiveUI();
resolver.Register(() => new FooView(), typeof(FooView));
using (resolver.WithResolver())
{
var fixture = new DefaultViewLocator();
object vm = new FooViewModel();
var result = fixture.ResolveView(vm);
Assert.IsType<FooView>(result);
}
}
[Fact]
public void ViewModelToViewNamingConventionCanBeCustomized()
{
var resolver = new ModernDependencyResolver();
resolver.InitializeSplat();
resolver.InitializeReactiveUI();
resolver.Register(() => new FooWithWeirdConvention(), typeof(FooWithWeirdConvention));
using (resolver.WithResolver())
{
var fixture = new DefaultViewLocator();
fixture.ViewModelToViewFunc = viewModelName => viewModelName.Replace("ViewModel", "WithWeirdConvention");
var vm = new FooViewModel();
var result = fixture.ResolveView(vm);
Assert.IsType<FooWithWeirdConvention>(result);
}
}
[Fact]
public void CanResolveViewFromViewModelClassUsingClassRegistration()
{
var resolver = new ModernDependencyResolver();
resolver.InitializeSplat();
resolver.InitializeReactiveUI();
resolver.Register(() => new FooView(), typeof(FooView));
using (resolver.WithResolver())
{
var fixture = new DefaultViewLocator();
var vm = new FooViewModel();
var result = fixture.ResolveView(vm);
Assert.IsType<FooView>(result);
}
}
[Fact]
public void CanResolveViewFromViewModelClassUsingInterfaceRegistration()
{
var resolver = new ModernDependencyResolver();
resolver.InitializeSplat();
resolver.InitializeReactiveUI();
resolver.Register(() => new FooView(), typeof(IFooView));
using (resolver.WithResolver())
{
var fixture = new DefaultViewLocator();
var vm = new FooViewModel();
var result = fixture.ResolveView(vm);
Assert.IsType<FooView>(result);
}
}
[Fact]
public void CanResolveViewFromViewModelClassUsingIViewForRegistration()
{
var resolver = new ModernDependencyResolver();
resolver.InitializeSplat();
resolver.InitializeReactiveUI();
resolver.Register(() => new FooView(), typeof(IViewFor<FooViewModel>));
using (resolver.WithResolver())
{
var fixture = new DefaultViewLocator();
var vm = new FooViewModel();
var result = fixture.ResolveView(vm);
Assert.IsType<FooView>(result);
}
}
[Fact]
public void CanResolveViewFromViewModelInterfaceUsingClassRegistration()
{
var resolver = new ModernDependencyResolver();
resolver.InitializeSplat();
resolver.InitializeReactiveUI();
resolver.Register(() => new FooView(), typeof(FooView));
using (resolver.WithResolver())
{
var fixture = new DefaultViewLocator();
IFooViewModel vm = new FooViewModelWithWeirdName();
var result = fixture.ResolveView(vm);
Assert.IsType<FooView>(result);
}
}
[Fact]
public void CanResolveViewFromViewModelInterfaceUsingInterfaceRegistration()
{
var resolver = new ModernDependencyResolver();
resolver.InitializeSplat();
resolver.InitializeReactiveUI();
resolver.Register(() => new FooView(), typeof(IFooView));
using (resolver.WithResolver())
{
var fixture = new DefaultViewLocator();
IFooViewModel vm = new FooViewModel();
var result = fixture.ResolveView(vm);
Assert.IsType<FooView>(result);
}
}
[Fact]
public void CanResolveViewFromViewModelInterfaceUsingIViewForRegistration()
{
var resolver = new ModernDependencyResolver();
resolver.InitializeSplat();
resolver.InitializeReactiveUI();
resolver.Register(() => new FooView(), typeof(IViewFor<IFooViewModel>));
using (resolver.WithResolver())
{
var fixture = new DefaultViewLocator();
IFooViewModel vm = new FooViewModel();
var result = fixture.ResolveView(vm);
Assert.IsType<FooView>(result);
}
}
[Fact]
public void ContractIsUsedWhenResolvingView()
{
var resolver = new ModernDependencyResolver();
resolver.InitializeSplat();
resolver.InitializeReactiveUI();
resolver.Register(() => new FooView(), typeof(IViewFor<IFooViewModel>), "first");
resolver.Register(() => new FooWithWeirdConvention(), typeof(IViewFor<IFooViewModel>), "second");
using (resolver.WithResolver())
{
var fixture = new DefaultViewLocator();
var vm = new FooViewModel();
var result = fixture.ResolveView(vm);
Assert.Null(result);
result = fixture.ResolveView(vm, "first");
Assert.IsType<FooView>(result);
result = fixture.ResolveView(vm, "second");
Assert.IsType<FooWithWeirdConvention>(result);
}
}
[Fact]
public void NoErrorIsRaisedIfATypeCannotBeFound()
{
var resolver = new ModernDependencyResolver();
resolver.InitializeSplat();
resolver.InitializeReactiveUI();
using (resolver.WithResolver())
{
var fixture = new DefaultViewLocator();
fixture.ViewModelToViewFunc = viewModelName => "DoesNotExist, " + typeof(DefaultViewLocatorTests).Assembly.FullName;
var vm = new FooViewModel();
var result = fixture.ResolveView(vm);
Assert.Null(result);
}
}
[Fact]
public void NoErrorIsRaisedIfAServiceCannotBeFound()
{
var resolver = new ModernDependencyResolver();
resolver.InitializeSplat();
resolver.InitializeReactiveUI();
using (resolver.WithResolver())
{
var fixture = new DefaultViewLocator();
var vm = new FooViewModel();
var result = fixture.ResolveView(vm);
Assert.Null(result);
}
}
[Fact]
public void NoErrorIsRaisedIfTheServiceDoesNotImplementIViewFor()
{
var resolver = new ModernDependencyResolver();
resolver.InitializeSplat();
resolver.InitializeReactiveUI();
resolver.Register(() => "this string does not implement IViewFor", typeof(IViewFor<IFooViewModel>));
using (resolver.WithResolver())
{
var fixture = new DefaultViewLocator();
var vm = new FooViewModel();
var result = fixture.ResolveView(vm);
Assert.Null(result);
}
}
[Fact]
public void AnErrorIsRaisedIfTheCreationOfTheViewFails()
{
var resolver = new ModernDependencyResolver();
resolver.InitializeSplat();
resolver.InitializeReactiveUI();
resolver.Register(() => new FooThatThrowsView(), typeof(IViewFor<IFooViewModel>));
using (resolver.WithResolver())
{
var fixture = new DefaultViewLocator();
var vm = new FooViewModel();
var ex = Assert.Throws<InvalidOperationException>(() => fixture.ResolveView(vm));
Assert.Equal("This is a test failure.", ex.Message);
}
}
[Fact]
public void WithOddInterfaceNameDoesntThrowException()
{
var resolver = new ModernDependencyResolver();
resolver.InitializeSplat();
resolver.InitializeReactiveUI();
using (resolver.WithResolver())
{
var fixture = new DefaultViewLocator();
var vm = new StrangeClassNotFollowingConvention();
fixture.ResolveView((IStrangeInterfaceNotFollowingConvention)vm);
}
}
[Fact]
public void CanResolveViewFromViewModelWithIRoutableViewModelType()
{
var resolver = new ModernDependencyResolver();
resolver.InitializeSplat();
resolver.InitializeReactiveUI();
resolver.Register(() => new RoutableFooView(), typeof(IViewFor<IRoutableFooViewModel>));
using (resolver.WithResolver())
{
var fixture = new DefaultViewLocator();
var vm = new RoutableFooViewModel();
var result = fixture.ResolveView<IRoutableViewModel>(vm);
Assert.IsType<RoutableFooView>(result);
}
}
}
}