public void CurrentReturnsCurrentItemsWhenResolverReturnsNoInstances() {
// Arrange
IEnumerable<TestProvider> providersFromItemsThunk = GetProvidersFromItemsThunk();
MultiServiceResolver<TestProvider> resolver = new MultiServiceResolver<TestProvider>(() => providersFromItemsThunk);
// Act
IEnumerable<TestProvider> returnedProviders = resolver.Current;
// Assert
CollectionAssert.AreEqual(providersFromItemsThunk.ToList(), returnedProviders.ToList());
}
public void CurrentDoesNotQueryResolverAfterNoInstancesAreReturned() {
// Arrange
IEnumerable<TestProvider> providersFromItemsThunk = GetProvidersFromItemsThunk();
Mock<IDependencyResolver> resolver = new Mock<IDependencyResolver>();
resolver.Setup(r => r.GetServices(typeof(TestProvider)))
.Returns(new TestProvider[0]);
MultiServiceResolver<TestProvider> multiResolver = new MultiServiceResolver<TestProvider>(() => providersFromItemsThunk, resolver.Object);
// Act
IEnumerable<TestProvider> returnedProviders = multiResolver.Current;
IEnumerable<TestProvider> cachedProviders = multiResolver.Current;
// Assert
CollectionAssert.AreEqual(providersFromItemsThunk.ToList(), returnedProviders.ToList());
CollectionAssert.AreEqual(providersFromItemsThunk.ToList(), cachedProviders.ToList());
resolver.Verify(r => r.GetServices(typeof(TestProvider)), Times.Exactly(1));
}
public void CurrentPrependsFromResolver() {
// Arrange
IEnumerable<TestProvider> providersFromServiceLocation = GetProvidersFromService();
IEnumerable<TestProvider> providersFromItemsThunk = GetProvidersFromItemsThunk();
IEnumerable<TestProvider> expectedProviders = providersFromServiceLocation.Concat(providersFromItemsThunk);
Mock<IDependencyResolver> resolver = new Mock<IDependencyResolver>();
resolver.Setup(r => r.GetServices(typeof(TestProvider)))
.Returns(providersFromServiceLocation);
MultiServiceResolver<TestProvider> multiResolver = new MultiServiceResolver<TestProvider>(() => providersFromItemsThunk, resolver.Object);
// Act
IEnumerable<TestProvider> returnedProviders = multiResolver.Current;
// Assert
CollectionAssert.AreEqual(expectedProviders.ToList(), returnedProviders.ToList());
}
public void CurrentCachesResolverResult()
{
// Arrange
IEnumerable<TestProvider> providersFromServiceLocation = GetProvidersFromService();
IEnumerable<TestProvider> providersFromItemsThunk = GetProvidersFromItemsThunk();
IEnumerable<TestProvider> expectedProviders = providersFromServiceLocation.Concat(providersFromItemsThunk);
Mock<IDependencyResolver> resolver = new Mock<IDependencyResolver>();
resolver.Setup(r => r.GetServices(typeof(TestProvider)))
.Returns(providersFromServiceLocation);
MultiServiceResolver<TestProvider> multiResolver = new MultiServiceResolver<TestProvider>(() => providersFromItemsThunk, resolver.Object);
// Act
IEnumerable<TestProvider> returnedProviders = multiResolver.Current;
IEnumerable<TestProvider> cachedProviders = multiResolver.Current;
// Assert
Assert.Equal(expectedProviders.ToList(), returnedProviders.ToList());
Assert.Equal(expectedProviders.ToList(), cachedProviders.ToList());
resolver.Verify(r => r.GetServices(typeof(TestProvider)), Times.Exactly(1));
}
public void CurrentPropagatesExceptionWhenResolverThrowsNonActivationException()
{
// Arrange
Mock<IDependencyResolver> resolver = new Mock<IDependencyResolver>(MockBehavior.Strict);
MultiServiceResolver<TestProvider> multiResolver = new MultiServiceResolver<TestProvider>(() => null, resolver.Object);
// Act & Assert
Assert.Throws<MockException>(
() => multiResolver.Current,
"IDependencyResolver.GetServices(System.Web.Mvc.Test.MultiServiceResolverTest+TestProvider) invocation failed with mock behavior Strict." + Environment.NewLine
+ "All invocations on the mock must have a corresponding setup."
);
}
