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// Copyright (c) Microsoft Corporation. All rights reserved. See License.txt in the project root for license information.
using Moq;
using Xunit;
using Assert = Microsoft.TestCommon.AssertEx;
namespace System.Web.Mvc.Test
{
public class SingleServiceResolverTest
{
[Fact]
public void ConstructorWithNullThunkArgumentThrows()
{
// Act & Assert
Assert.ThrowsArgumentNull(
delegate { new SingleServiceResolver<TestProvider>(null, null, "TestProvider.Current"); },
"currentValueThunk");
Assert.ThrowsArgumentNull(
delegate { new SingleServiceResolver<TestProvider>(null, null, "TestProvider.Current"); },
"currentValueThunk");
Assert.ThrowsArgumentNull(
delegate { new SingleServiceResolver<TestProvider>(() => null, null, "TestProvider.Current"); },
"defaultValue");
}
[Fact]
public void CurrentConsultsResolver()
{
// Arrange
TestProvider providerFromDefaultValue = new TestProvider();
TestProvider providerFromServiceLocation = new TestProvider();
Mock<IDependencyResolver> resolver = new Mock<IDependencyResolver>();
resolver.Setup(r => r.GetService(typeof(TestProvider)))
.Returns(providerFromServiceLocation);
SingleServiceResolver<TestProvider> singleResolver = new SingleServiceResolver<TestProvider>(() => null, providerFromDefaultValue, resolver.Object, "TestProvider.Current");
// Act
TestProvider returnedProvider = singleResolver.Current;
// Assert
Assert.Equal(providerFromServiceLocation, returnedProvider);
}
[Fact]
public void CurrentReturnsCurrentProviderNotDefaultIfSet()
{
// Arrange
TestProvider providerFromDefaultValue = new TestProvider();
TestProvider providerFromCurrentValueThunk = null;
Mock<IDependencyResolver> resolver = new Mock<IDependencyResolver>();
SingleServiceResolver<TestProvider> singleResolver = new SingleServiceResolver<TestProvider>(() => providerFromCurrentValueThunk, providerFromDefaultValue, resolver.Object, "TestProvider.Current");
// Act
providerFromCurrentValueThunk = new TestProvider();
TestProvider returnedProvider = singleResolver.Current;
// Assert
Assert.Equal(providerFromCurrentValueThunk, returnedProvider);
resolver.Verify(r => r.GetService(typeof(TestProvider)));
}
[Fact]
public void CurrentCachesResolverResult()
{
// Arrange
TestProvider providerFromDefaultValue = new TestProvider();
TestProvider providerFromServiceLocation = new TestProvider();
Mock<IDependencyResolver> resolver = new Mock<IDependencyResolver>();
resolver.Setup(r => r.GetService(typeof(TestProvider)))
.Returns(providerFromServiceLocation);
SingleServiceResolver<TestProvider> singleResolver = new SingleServiceResolver<TestProvider>(() => null, providerFromDefaultValue, resolver.Object, "TestProvider.Current");
// Act
TestProvider returnedProvider = singleResolver.Current;
TestProvider cachedProvider = singleResolver.Current;
// Assert
Assert.Equal(providerFromServiceLocation, returnedProvider);
Assert.Equal(providerFromServiceLocation, cachedProvider);
resolver.Verify(r => r.GetService(typeof(TestProvider)), Times.Exactly(1));
}
[Fact]
public void CurrentDoesNotQueryResolverAfterReceivingNull()
{
// Arrange
TestProvider providerFromDefaultValue = new TestProvider();
TestProvider providerFromCurrentValueThunk = new TestProvider();
Mock<IDependencyResolver> resolver = new Mock<IDependencyResolver>();
SingleServiceResolver<TestProvider> singleResolver = new SingleServiceResolver<TestProvider>(() => providerFromCurrentValueThunk, providerFromDefaultValue, resolver.Object, "TestProvider.Current");
// Act
TestProvider returnedProvider = singleResolver.Current;
TestProvider cachedProvider = singleResolver.Current;
// Assert
Assert.Equal(providerFromCurrentValueThunk, returnedProvider);
Assert.Equal(providerFromCurrentValueThunk, cachedProvider);
resolver.Verify(r => r.GetService(typeof(TestProvider)), Times.Exactly(1));
}
[Fact]
public void CurrentReturnsDefaultIfCurrentNotSet()
{
//Arrange
TestProvider providerFromDefaultValue = new TestProvider();
Mock<IDependencyResolver> resolver = new Mock<IDependencyResolver>();
SingleServiceResolver<TestProvider> singleResolver = new SingleServiceResolver<TestProvider>(() => null, providerFromDefaultValue, resolver.Object, "TestProvider.Current");
//Act
TestProvider returnedProvider = singleResolver.Current;
// Assert
Assert.Equal(returnedProvider, providerFromDefaultValue);
resolver.Verify(l => l.GetService(typeof(TestProvider)));
}
[Fact]
public void CurrentThrowsIfCurrentSetThroughServiceAndSetter()
{
// Arrange
TestProvider providerFromCurrentValueThunk = new TestProvider();
TestProvider providerFromServiceLocation = new TestProvider();
TestProvider providerFromDefaultValue = new TestProvider();
Mock<IDependencyResolver> resolver = new Mock<IDependencyResolver>();
resolver.Setup(r => r.GetService(typeof(TestProvider)))
.Returns(providerFromServiceLocation);
SingleServiceResolver<TestProvider> singleResolver = new SingleServiceResolver<TestProvider>(() => providerFromCurrentValueThunk, providerFromDefaultValue, resolver.Object, "TestProvider.Current");
//Act & assert
Assert.Throws<InvalidOperationException>(
() => singleResolver.Current,
"An instance of TestProvider was found in the resolver as well as a custom registered provider in TestProvider.Current. Please set only one or the other."
);
}
[Fact]
public void CurrentPropagatesExceptionWhenResolverThrowsNonActivationException()
{
// Arrange
TestProvider providerFromDefaultValue = new TestProvider();
Mock<IDependencyResolver> resolver = new Mock<IDependencyResolver>(MockBehavior.Strict);
SingleServiceResolver<TestProvider> singleResolver = new SingleServiceResolver<TestProvider>(() => null, providerFromDefaultValue, resolver.Object, "TestProvider.Current");
// Act & Assert
Assert.Throws<MockException>(
() => singleResolver.Current,
@"IDependencyResolver.GetService(System.Web.Mvc.Test.SingleServiceResolverTest+TestProvider) invocation failed with mock behavior Strict.
All invocations on the mock must have a corresponding setup."
);
}
private class TestProvider
{
}
}
}
|
