protected UnitResult <E2> GetErrorUnitResult(E _)
{
funcExecuted.Should().BeFalse();
funcExecuted = true;
return(UnitResult.Failure(E2.Value));
}
public async Task Finally_LeftAsync_unit_result_E_executes_on_failure_returns_K()
{
UnitResult <E> result = UnitResult.Failure(E.Value);
K output = await result.AsTask().Finally(Func_Unit_Result_E);
AssertCalled(result, output);
}
public void Finally_unit_result_E_executes_on_failure_returns_K()
{
UnitResult <E> result = UnitResult.Failure(E.Value);
K output = result.Finally(Func_Unit_Result_E);
AssertCalled(result, output);
}
protected UnitResult <E> FailureErrorAction()
{
actionExecuted.Should().BeFalse();
actionExecuted = true;
return(UnitResult.Failure(E.Value2));
}
public async Task Compensate_E_returns_E2_failure_and_does_not_execute_func()
{
Task <UnitResult <E> > input = UnitResult.Failure(E.Value).AsTask();
UnitResult <E2> output = await input.Compensate(GetSuccessUnitResultAsync);
AssertSuccess(output);
}
public async Task Compensate_E_returns_E2_success_and_execute_func()
{
Task <UnitResult <E> > input = UnitResult.Failure(E.Value).AsTask();
UnitResult <E2> output = await input.Compensate(GetErrorUnitResultAsync);
AssertFailure(output, executed: true);
}
public async Task Compensate_E_returns_success_and_execute_func()
{
UnitResult <E> input = UnitResult.Failure(E.Value);
Result output = await input.Compensate(GetErrorResultAsync);
AssertFailure(output, executed: true);
}
public void Bind_E_returns_failure_and_does_not_execute_func()
{
UnitResult <E> input = UnitResult.Failure <E>(E.Value);
UnitResult <E> output = input.Bind(GetResult_T_E);
AssertFailure(output);
}
public void Compensate_E_returns_E2_failure_and_does_not_execute_func()
{
UnitResult <E> input = UnitResult.Failure(E.Value);
UnitResult <E2> output = input.Compensate(GetSuccessUnitResult);
AssertSuccess(output);
}
public async Task Compensate_E_returns_failure_and_does_not_execute_func()
{
UnitResult <E> input = UnitResult.Failure(E.Value);
Result output = await input.Compensate(GetSuccessResultAsync);
AssertSuccess(output);
}
public void Compensate_E_returns_E2_success_and_execute_func()
{
UnitResult <E> input = UnitResult.Failure(E.Value);
UnitResult <E2> output = input.Compensate(GetErrorUnitResult);
AssertFailure(output, executed: true);
}
public void Bind_E_returns_unit_result_failure_and_does_not_execute_func()
{
UnitResult <E> input = UnitResult.Failure(E.Value);
UnitResult <E> output = input.AsTask().Bind(GetUnitResult_E_Task).Result;
AssertFailure(output);
}
public void Map_unit_result_E_executes_on_failure_returns_new_failure()
{
UnitResult <E> result = UnitResult.Failure(E.Value);
Result <K, E> actual = result.Map(Func_K);
actual.IsSuccess.Should().BeFalse();
actual.Error.Should().Be(E.Value);
funcExecuted.Should().BeFalse();
}
public void UnitResult_can_convert_failedResult_with_value_to_failedResult_without_value()
{
var failedResultWithValue = UnitResult.Failure(E.Value);
Result <K, E> failedResultWithoutValue = failedResultWithValue.ConvertFailure <K>();
failedResultWithoutValue.IsFailure.Should().BeTrue();
failedResultWithoutValue.Error.Should().BeEquivalentTo(E.Value);
}
public async Task Map_AsyncBoth_unit_result_E_executes_on_failure_returns_failure()
{
Task <UnitResult <E> > result = UnitResult.Failure(E.Value).AsTask();
Result <K, E> actual = await result.Map(Task_Func_K);
actual.IsSuccess.Should().BeFalse();
actual.Error.Should().Be(E.Value);
funcExecuted.Should().BeFalse();
}
public void Tap_unit_result_E_executes_action_on_failure_and_returns_self()
{
UnitResult <E> result = UnitResult.Failure(E.Value);
var returned = result.AsTask().Tap(Action).Result;
actionExecuted.Should().Be(false);
result.Should().Be(returned);
}
public void Can_create_a_unit_version()
{
var error = new MyErrorClass();
UnitResult <MyErrorClass> result = UnitResult.Failure(error);
result.Error.Should().Be(error);
result.IsFailure.Should().Be(true);
result.IsSuccess.Should().Be(false);
}
public void Combine_array_unit_results_error_together()
{
UnitResult <Error> result1 = UnitResult.Success <Error>();
UnitResult <Error> result2 = UnitResult.Failure <Error>(new Error("Failure 1"));
UnitResult <Error> result3 = UnitResult.Failure <Error>(new Error("Failure 2"));
UnitResult <Error> result = Result.Combine(result1, result2, result3);
result.IsSuccess.Should().BeFalse();
result.Error.Errors.Should().BeEquivalentTo(new[] { "Failure 1", "Failure 2" });
}
public void Deserialization_of_unit_result_when_failure()
{
DeserializationTestObject errorObject = new DeserializationTestObject {
Number = 500, String = "Error message"
};
UnitResult <DeserializationTestObject> failResult = UnitResult.Failure(errorObject);
var serialized = Serialize(failResult);
UnitResult <DeserializationTestObject> result = Deserialize <UnitResult <DeserializationTestObject> >(serialized);
result.Error.Should().BeEquivalentTo(errorObject);
}
public void Combine_all_unit_results_errors_together()
{
IEnumerable <UnitResult <Error> > results = new UnitResult <Error>[]
{
UnitResult.Success <Error>(),
UnitResult.Failure <Error>(new Error("Failure 1")),
UnitResult.Failure <Error>(new Error("Failure 2")),
};
UnitResult <Error> result = Result.Combine(results, ComposeErrors);
result.IsSuccess.Should().BeFalse();
result.Error.Errors.Should().BeEquivalentTo(new[] { "Failure 1", "Failure 2" });
}
public void Cannot_create_without_error_message()
{
Action action1 = () => { Result.Failure(null); };
Action action2 = () => { Result.Failure(string.Empty); };
Action action3 = () => { Result.Failure <MyClass>(null); };
Action action4 = () => { Result.Failure <MyClass>(string.Empty); };
Action action5 = () => { UnitResult.Failure <MyClass>(null); };
action1.Should().Throw <ArgumentNullException>();
action2.Should().Throw <ArgumentNullException>();
action3.Should().Throw <ArgumentNullException>();
action4.Should().Throw <ArgumentNullException>();
action5.Should().Throw <ArgumentNullException>();
}
public async Task MapError_E_unit_result_returns_new_failure()
{
Task <UnitResult <E> > result = UnitResult.Failure(E.Value).AsTask();
var invocations = 0;
UnitResult <E2> actual = await result.MapError(error =>
{
error.Should().Be(E.Value);
invocations++;
return(Task.FromResult(E2.Value));
});
actual.IsSuccess.Should().BeFalse();
actual.Error.Should().Be(E2.Value);
invocations.Should().Be(1);
}
public void MapError_unit_result_returns_new_failure()
{
UnitResult <E> result = UnitResult.Failure(E.Value);
var invocations = 0;
Result actual = result.MapError(error =>
{
error.Should().Be(E.Value);
invocations++;
return("error");
});
actual.IsSuccess.Should().BeFalse();
actual.Error.Should().Be("error");
invocations.Should().Be(1);
}
public void GetObjectData_of_failed_unit_result()
{
TestObject errorObject = new TestObject {
Number = 500, String = "Error message"
};
UnitResult <TestObject> result = UnitResult.Failure(errorObject);
ISerializable serializableObject = result;
var serializationInfo = new SerializationInfo(typeof(Result), new FormatterConverter());
serializableObject.GetObjectData(serializationInfo, new StreamingContext());
serializationInfo.GetBoolean(nameof(Result.IsSuccess)).Should().BeFalse();
serializationInfo.GetBoolean(nameof(Result.IsFailure)).Should().BeTrue();
serializationInfo
.GetValue(nameof(Result <object, TestObject> .Error), typeof(TestObject))
.Should().Be(errorObject);
}
public void ToString_returns_failure_with_generic_error_when_unit_result_failure()
{
UnitResult <ErrorType> subject = UnitResult.Failure(ErrorType.Error1);
Assert.Equal("Failure(Error1)", subject.ToString());
}