public void Should_be_able_to_resolve_same_type_twice_when_successful()
{
// Arrange
var resolver = new DummyValueResolver(
this.CreateDummyFactoryThatMakes("dummy value"),
this.fakeObjectCreator);
resolver.TryResolveDummyValue(typeof(string), new LoopDetectingResolutionContext());
// Act
var result = resolver.TryResolveDummyValue(typeof(string), new LoopDetectingResolutionContext());
// Assert
result.WasSuccessful.Should().BeTrue();
result.Result.Should().Be("dummy value");
}
public void Should_be_able_to_resolve_same_type_twice_when_successful()
{
// Arrange
var resolver = new DummyValueResolver(
this.CreateDummyFactoryThatMakes("dummy value"),
this.fakeObjectCreator);
object dummy;
resolver.TryResolveDummyValue(new DummyCreationSession(), typeof(string), out dummy);
// Act
var result = resolver.TryResolveDummyValue(new DummyCreationSession(), typeof(string), out dummy);
// Assert
result.Should().BeTrue();
dummy.Should().Be("dummy value");
}
public void Should_not_be_able_to_create_class_with_circular_dependencies()
{
// Arrange
var resolver = new DummyValueResolver(
this.CreateDummyFactoryThatMakesNoDummy(),
this.fakeObjectCreator);
// Act
var result = resolver.TryResolveDummyValue(typeof(TypeWithCircularDependency));
// Assert
result.WasSuccessful.Should().BeFalse();
}
public void Should_return_failed_creation_result_when_type_cannot_be_created()
{
// Arrange
var resolver = new DummyValueResolver(
this.CreateDummyFactoryThatMakesNoDummy(),
this.fakeObjectCreator);
// Act
var result = resolver.TryResolveDummyValue(typeof(TypeThatCanNotBeInstantiated));
// Assert
result.WasSuccessful.Should().BeFalse();
}
public void Should_return_failed_result_for_restricted_types(Type restrictedType)
{
// Arrange
var resolver = new DummyValueResolver(
this.CreateDummyFactoryThatMakesNoDummy(),
this.fakeObjectCreator);
// Act
var result = resolver.TryResolveDummyValue(restrictedType, new LoopDetectingResolutionContext());
// Assert
result.WasSuccessful.Should().BeFalse();
}
public void Should_return_failed_result_when_default_constructor_throws()
{
// Arrange
var resolver = new DummyValueResolver(
this.CreateDummyFactoryThatMakesNoDummy(),
this.fakeObjectCreator);
// Act
var result = resolver.TryResolveDummyValue(typeof(TypeWithDefaultConstructorThatThrows));
// Assert
result.WasSuccessful.Should().BeFalse();
}
public void Should_be_able_to_create_class_with_default_constructor()
{
// Arrange
var resolver = new DummyValueResolver(
this.CreateDummyFactoryThatMakesNoDummy(),
this.fakeObjectCreator);
// Act
var result = resolver.TryResolveDummyValue(typeof(ClassWithDefaultConstructor));
// Assert
result.WasSuccessful.Should().BeTrue();
result.Result.Should().BeOfType <ClassWithDefaultConstructor>();
}
public void Should_favor_the_widest_constructor_when_activating()
{
// Arrange
var resolver = new DummyValueResolver(
this.CreateDummyFactoryThatMakes("dummy value"),
this.fakeObjectCreator);
// Act
var result = resolver.TryResolveDummyValue(typeof(TypeWithMultipleConstructorsOfDifferentWidth));
var typedDummy = (TypeWithMultipleConstructorsOfDifferentWidth)result.Result;
// Assert
typedDummy.WidestConstructorWasCalled.Should().BeTrue();
}
public void Should_return_false_for_restricted_types(Type restrictedType)
{
// Arrange
var resolver = new DummyValueResolver(
this.CreateDummyFactoryThatMakesNoDummy(),
this.fakeObjectCreator);
// Act
object dummy;
var result = resolver.TryResolveDummyValue(new DummyCreationSession(), restrictedType, out dummy);
// Assert
result.Should().BeFalse();
}
public void Should_return_false_when_default_constructor_throws()
{
// Arrange
var resolver = new DummyValueResolver(
this.CreateDummyFactoryThatMakesNoDummy(),
this.fakeObjectCreator);
// Act
object dummy;
var result = resolver.TryResolveDummyValue(new DummyCreationSession(), typeof(TypeWithDefaultConstructorThatThrows), out dummy);
// Assert
result.Should().BeFalse();
}
public void Should_return_default_value_when_type_is_value_type()
{
// Arrange
var resolver = new DummyValueResolver(
this.CreateDummyFactoryThatMakesNoDummy(),
this.fakeObjectCreator);
// Act
var result = resolver.TryResolveDummyValue(typeof(int), new LoopDetectingResolutionContext());
// Assert
result.WasSuccessful.Should().BeTrue();
result.Result.Should().Be(0);
}
public void Should_return_default_value_when_type_is_value_type()
{
// Arrange
var resolver = new DummyValueResolver(
this.CreateDummyFactoryThatMakesNoDummy(),
this.fakeObjectCreator);
// Act
object dummy;
var result = resolver.TryResolveDummyValue(new DummyCreationSession(), typeof(int), out dummy);
// Assert
result.Should().BeTrue();
dummy.Should().Be(0);
}
public void Should_return_false_when_type_cannot_be_created()
{
// Arrange
var resolver = new DummyValueResolver(
this.CreateDummyFactoryThatMakesNoDummy(),
this.fakeObjectCreator);
// Act
object dummy;
var result = resolver.TryResolveDummyValue(new DummyCreationSession(), typeof(TypeThatCanNotBeInstantiated), out dummy);
// Assert
result.Should().BeFalse();
dummy.Should().BeNull();
}
public void Should_be_able_to_create_class_with_resolvable_constructor_arguments()
{
// Arrange
this.StubFakeObjectCreatorWithValue(A.Fake <IFoo>());
var resolver = new DummyValueResolver(
this.CreateDummyFactoryThatMakes("dummy string"),
this.fakeObjectCreator);
// Act
var result = resolver.TryResolveDummyValue(typeof(TypeWithResolvableConstructorArguments <string, IFoo>));
// Assert
result.WasSuccessful.Should().BeTrue();
result.Result.Should().BeOfType <TypeWithResolvableConstructorArguments <string, IFoo> >();
}
public void Should_be_able_to_create_class_with_default_constructor()
{
// Arrange
var resolver = new DummyValueResolver(
this.CreateDummyFactoryThatMakesNoDummy(),
this.fakeObjectCreator);
// Act
object dummy;
var result = resolver.TryResolveDummyValue(new DummyCreationSession(), typeof(ClassWithDefaultConstructor), out dummy);
// Assert
result.Should().BeTrue();
dummy.Should().BeOfType <ClassWithDefaultConstructor>();
}
public void Should_return_dummy_from_container_when_available(object dummyForContainer)
{
Guard.AgainstNull(dummyForContainer, nameof(dummyForContainer));
// Arrange
var resolver = new DummyValueResolver(
this.CreateDummyFactoryThatMakes(dummyForContainer),
this.fakeObjectCreator);
// Act
var result = resolver.TryResolveDummyValue(dummyForContainer.GetType(), new LoopDetectingResolutionContext());
// Assert
result.WasSuccessful.Should().BeTrue();
result.Result.Should().BeSameAs(dummyForContainer);
}
public void Should_return_fake_when_it_can_be_created()
{
// Arrange
var fake = A.Fake <IFoo>();
this.StubFakeObjectCreatorWithValue(fake);
var resolver = new DummyValueResolver(
this.CreateDummyFactoryThatMakesNoDummy(),
this.fakeObjectCreator);
// Act
var result = resolver.TryResolveDummyValue(typeof(IFoo), new LoopDetectingResolutionContext());
// Assert
result.WasSuccessful.Should().BeTrue();
result.Result.Should().BeSameAs(fake);
}
public void Should_return_dummy_from_container_when_available(object dummyForContainer)
{
Guard.AgainstNull(dummyForContainer, nameof(dummyForContainer));
// Arrange
var resolver = new DummyValueResolver(
this.CreateDummyFactoryThatMakes(dummyForContainer),
this.fakeObjectCreator);
// Act
object dummy;
var result = resolver.TryResolveDummyValue(new DummyCreationSession(), dummyForContainer.GetType(), out dummy);
// Assert
result.Should().BeTrue();
dummy.Should().BeSameAs(dummyForContainer);
}
public void Should_return_fake_when_it_can_be_created()
{
// Arrange
var fake = A.Fake <IFoo>();
this.StubFakeObjectCreatorWithValue(fake);
var resolver = new DummyValueResolver(
this.CreateDummyFactoryThatMakesNoDummy(),
this.fakeObjectCreator);
// Act
object dummy;
var result = resolver.TryResolveDummyValue(new DummyCreationSession(), typeof(IFoo), out dummy);
// Assert
result.Should().BeTrue();
dummy.Should().BeSameAs(fake);
}
public void Should_favor_the_widest_constructor_when_activating()
{
// Arrange
var resolver = new DummyValueResolver(
this.CreateDummyFactoryThatMakes("dummy value"),
this.fakeObjectCreator);
// Act
var result = resolver.TryResolveDummyValue(
typeof(TypeWithMultipleConstructorsOfDifferentWidth),
new LoopDetectingResolutionContext());
// Assert
var dummy = result.Result;
dummy.Should().BeOfType <TypeWithMultipleConstructorsOfDifferentWidth>();
((TypeWithMultipleConstructorsOfDifferentWidth)dummy !).WidestConstructorWasCalled.Should().BeTrue();
}
public void Should_be_able_to_create_lazy_wrapper()
{
// Arrange
var fake = A.Fake <IFoo>();
this.StubFakeObjectCreatorWithValue(fake);
var resolver = new DummyValueResolver(
this.CreateDummyFactoryThatMakesNoDummy(),
this.fakeObjectCreator);
// Act
object dummy;
var result = resolver.TryResolveDummyValue(new DummyCreationSession(), typeof(Lazy <IFoo>), out dummy);
// Assert
result.Should().BeTrue();
dummy.Should().BeOfType <Lazy <IFoo> >();
((Lazy <IFoo>)dummy).Value.Should().BeSameAs(fake);
}
public void Should_be_able_to_create_lazy_wrapper()
{
// Arrange
var fake = A.Fake <IFoo>();
this.StubFakeObjectCreatorWithValue(fake);
var resolver = new DummyValueResolver(
this.CreateDummyFactoryThatMakesNoDummy(),
this.fakeObjectCreator);
// Act
var result = resolver.TryResolveDummyValue(typeof(Lazy <IFoo>), new LoopDetectingResolutionContext());
// Assert
result.WasSuccessful.Should().BeTrue();
var dummy = result.Result;
dummy.Should().BeOfType <Lazy <IFoo> >();
((Lazy <IFoo>)dummy).Value.Should().BeSameAs(fake);
}