public void ByCategory_FilterOnly_ItemsFrom_TheGivenCategory(string validCategory, string invalidCategory)
{
var modelMock = new Mock <FakeModel>();
var serviceProviderMock = new Mock <IServiceProvider>();
var ruleForValid1Mock = new Mock <IRuleFor <FakeModel> >();
var ruleForValid2Mock = new Mock <IRuleFor <FakeModel> >();
var ruleForInvalidMock = new Mock <IRuleFor <FakeModel> >();
ruleForValid1Mock.Setup(s => s.Category).Returns(validCategory);
ruleForValid1Mock.Setup(s => s.CheckAsync(It.IsAny <FakeModel>()))
.ReturnsAsync(RuleCheckResult.Success);
ruleForValid2Mock.Setup(s => s.Category).Returns(validCategory);
ruleForValid2Mock.Setup(s => s.CheckAsync(It.IsAny <FakeModel>()))
.ReturnsAsync(RuleCheckResult.Success);
ruleForInvalidMock.Setup(s => s.Category).Returns(invalidCategory);
ruleForInvalidMock.Setup(s => s.CheckAsync(It.IsAny <FakeModel>()))
.ReturnsAsync(RuleCheckResult.Fail);
serviceProviderMock
.Setup(p => p.GetService(typeof(IEnumerable <IRuleFor <FakeModel> >)))
.Returns(new List <IRuleFor <FakeModel> >(new[]
{
ruleForValid1Mock.Object,
ruleForValid2Mock.Object,
ruleForInvalidMock.Object
}));
var ruleset = new RuleSet <FakeModel>(serviceProviderMock.Object);
var result = ruleset.ByCategory(validCategory).Check(modelMock.Object);
serviceProviderMock.Verify(
v => v.GetService(typeof(IEnumerable <IRuleFor <FakeModel> >)),
Times.Exactly(1));
ruleForValid1Mock.Verify(v => v.CheckAsync(It.IsAny <FakeModel>()), Times.Exactly(1));
ruleForValid2Mock.Verify(v => v.CheckAsync(It.IsAny <FakeModel>()), Times.Exactly(1));
ruleForInvalidMock.Verify(v => v.CheckAsync(It.IsAny <FakeModel>()), Times.Never());
Assert.NotNull(result);
Assert.True(result.IsSuccess);
}