public void ByCode_FilterOnly_ItemsWith_EnteredCodes(string validCode1, string validCode2, string invalidCode)
{
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.Code).Returns(validCode1);
ruleForValid1Mock.Setup(s => s.CheckAsync(It.IsAny <FakeModel>()))
.ReturnsAsync(RuleCheckResult.Success);
ruleForValid2Mock.Setup(s => s.Code).Returns(validCode2);
ruleForValid2Mock.Setup(s => s.CheckAsync(It.IsAny <FakeModel>()))
.ReturnsAsync(RuleCheckResult.Success);
ruleForInvalidMock.Setup(s => s.Code).Returns(invalidCode);
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 result1 = ruleset.ByCode(validCode1).Check(modelMock.Object);
var result2 = ruleset.ByCode(validCode2).Check(modelMock.Object);
var result3 = ruleset.ByCode(new[] { validCode1, validCode2 }).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(2));
ruleForValid2Mock.Verify(v => v.CheckAsync(It.IsAny <FakeModel>()), Times.Exactly(2));
ruleForInvalidMock.Verify(v => v.CheckAsync(It.IsAny <FakeModel>()), Times.Never());
Assert.NotNull(result1);
Assert.NotNull(result2);
Assert.NotNull(result3);
Assert.True(result1.IsSuccess);
Assert.True(result2.IsSuccess);
Assert.True(result3.IsSuccess);
}