public void OrThrow_DoesNotThrowIfSuccess()
{
var testValue = ""; //to be overwritten by "happy"
Assert.DoesNotThrow(() => testValue = EFailable <string> .Success("HAPPY").OrThrow());
Assert.That(testValue, Is.EqualTo("HAPPY"));
}
public void ConstructFailure_ErrorNotNull()
{
var testValue = EFailable <object> .Failure(new ArgumentException());
Assert.That(testValue.IsSuccess, Is.False);
Assert.That(testValue.IsFailure, Is.True);
}
public void ConstructFailure_WrappingErrorGiven()
{
var testValue = EFailable <object> .Wrapping(() => new ArgumentException());
Assert.That(testValue.IsSuccess, Is.True);
Assert.That(testValue.IsFailure, Is.False);
}
public void Equals_Option()
{
var aEOption = EOption <int> .Some(4);
var aOption = Option <int, Exception> .Some(4);
var bEOption = EOption <int> .None;
var bOption = Option <int, Exception> .None;
var exception = new ArgumentException();
var cEOption = EFailable <int> .Failure(exception);
var cOption = Failable <int, Exception> .Failure(exception);
Assert.That(aEOption.GetHashCode(), Is.EqualTo(aOption.GetHashCode()), "HashCode not correct (Success-Case)");
Assert.That(bEOption.GetHashCode(), Is.EqualTo(bOption.GetHashCode()), "HashCode not correct (None-Case)");
Assert.That(cEOption.GetHashCode(), Is.EqualTo(cOption.GetHashCode()), "HashCode not correct (Failure-Case)");
Assert.That(aEOption, Is.EqualTo(aOption), "EOption-Equals is buggy! (Some-Case)");
Assert.That(bEOption, Is.EqualTo(bOption), "EOption-Equals is buggy! (None-Case)");
Assert.That(cEOption, Is.EqualTo(cOption), "EOption-Equals is buggy! (Failure-Case)");
Assert.That(aOption, Is.EqualTo(aEOption), "Implementation of Option is not accepting EOption! (Some-Case)");
Assert.That(bOption, Is.EqualTo(bEOption), "Implementation of Option is not accepting EOption! (None-Case)");
Assert.That(cOption, Is.EqualTo(cEOption), "Implementation of Option is not accepting EOption! (Failure-Case)");
Assert.That(aEOption, Is.Not.EqualTo(bOption)); //sanity-checks
Assert.That(cOption, Is.Not.EqualTo(bEOption));
}
public void Equals_DifferentTypeInequalForFailure()
{
var x = EFailable <int> .Failure(new ArgumentException("horrible"));
var y = EFailable <object> .Failure(new ArgumentException("horrible"));
Assert.That(x.Equals(y), Is.False);
}
public void Equals_FailedInequal()
{
var x = EFailable <object> .Failure(new ArgumentException("what a disappointment"));
var y = EFailable <object> .Failure(new ArgumentException("yet another disappointment"));
Assert.That(x.Equals(y), Is.False);
}
public void Equals_FailedEqualObjects()
{
var x = EFailable <int> .Failure(new ArgumentException());
var y = EFailable <int> .Failure(new ArgumentException());
Assert.That(x.Equals(y), Is.False);
}
public void Equals_SuccessInequal()
{
var x = EFailable <int> .Success(4);
var y = EFailable <int> .Success(5);
Assert.That(x.Equals(y), Is.False);
}
public void ConvertToEFailable_None()
{
var maybe = Maybe <string> .None;
EFailable <string> failable = maybe.ToEFailable(new ArgumentException("msg"));
Assert.That(failable.IsFailure, Is.True);
Assert.That(failable.FailureOrThrow().Message, Is.EqualTo("msg"));
}
public void ConstructSuccess_NotNull()
{
var testValue = EFailable <object> .Success(new object());
Assert.That(testValue.IsSuccess, Is.True);
Assert.That(testValue.IsFailure, Is.False);
Assert.That(testValue.Enum, Is.EqualTo(FlbType.Success));
}
public void ConvertToEOption_Success()
{
var EFailable = EFailable <string> .Success("hubba");
EOption <string> EOption = EFailable.ToEOption();
Assert.That(EOption.IsSome, Is.True);
}
public void ConvertToMaybe_Failure()
{
var EFailable = EFailable <string> .Failure(new ArgumentException());
var maybe = EFailable.ToMaybe();
Assert.That(maybe.IsNone, Is.True);
}
public void TryGet_Result_Success()
{
var EFailable = EFailable <string> .Success("blub");
EFailable.TryGetValue(out var s);
Assert.That(s, Is.EqualTo("blub"));
}
public void ConvertFailable_Failure()
{
var EFailable = EFailable <string> .Failure(new ArgumentException( "abc" ));
Failable <string, Exception> failable = EFailable.ToFailable();
Assert.That(failable.IsFailure, Is.True);
}
public void TryGet_Value_Failure()
{
var EFailable = EFailable <string> .Failure(new ArgumentException());
EFailable.TryGetValue(out var s);
Assert.IsNull(s);
}
public void Map_NestingInMap()
{
var flag = EFailable <bool> .Success(true);
var result = flag.Map(_ => EFailable <bool> .Success(true));
Assert.That(result.Or(EFailable <bool> .Failure(new ArgumentException())).Or(false), Is.True);
}
public void ConvertToFailable_Success()
{
var EFailable = EFailable <string> .Success("hubba");
Failable <string, Exception> failable = EFailable.ToFailable();
Assert.That(failable.IsSuccess, Is.True);
}
public void ConvertToEOption_Failure()
{
var EFailable = EFailable <string> .Failure(new ArgumentException( "abc" ));
EOption <string> EOption = EFailable.ToEOption();
Assert.That(EOption.IsFailure, Is.True);
}
public void Map_Success()
{
var original = EFailable <string> .Success("hallo");
var result = original.Map(s => s += " welt");
Assert.That(result.OrThrow, Is.EqualTo("hallo welt"));
}
public void FlatMapToDifferentType()
{
var one = EFailable <int> .Success(1);
EFailable <string> onePlusOne = one.FlatMap(i => EFailable <string> .Success($"{i}+1=2"));
Assert.That(onePlusOne.OrThrow(), Is.EqualTo("1+1=2"));
}
public void ConvertToMaybe_Success()
{
var EFailable = EFailable <string> .Success("hallo");
var maybe = EFailable.ToMaybe();
Assert.That(maybe.IsSome, Is.True);
Assert.That(maybe.OrThrow, Is.EqualTo("hallo"));
}
public void OrConvertToEFailable_Failure()
{
var option = Option <int, string> .Failure("notMsg");
EFailable <int> failable = option.OrToEFailable(456, new ArgumentException("msg"));
Assert.That(failable.IsFailure, Is.True);
Assert.That(failable.FailureOrThrow().Message, Is.EqualTo("msg"));
}
public void ConvertToEFailable_Failure()
{
var EOption = EOption <string> .Failure(new ArgumentException( "msg" ));
EFailable <string> failable = EOption.ToEFailable(new ArgumentException("to-be-used-on-none!"));
Assert.That(failable.IsFailure, Is.True);
Assert.That(failable.FailureOrThrow().Message, Is.EqualTo("msg"));
}
public void ConvertToEFailable_Failure()
{
var failable = Failable <string, bool> .Failure(true);
EFailable <string> EFailable = failable.ToEFailable(new ArgumentException("msg"));
Assert.That(EFailable.IsFailure, Is.True);
Assert.That(EFailable.FailureOrThrow().Message, Is.EqualTo("msg"));
}
public void ConvertToOption_Success()
{
var EFailable = EFailable <string> .Success("hubba");
var option = EFailable.ToOption();
Assert.That(option.IsSome, Is.True);
Assert.That(option.OrThrow, Is.EqualTo("hubba"));
}
public void Map_Failure()
{
var e = new ArgumentException();
var original = EFailable <string> .Failure(e);
var result = original.Map(s => s += " welt");
Assert.That(result.FailureOrThrow, Is.EqualTo(e));
}
public void Equals_FailedSameInstance()
{
var e = new ArgumentException();
var x = EFailable <int> .Failure(e);
var y = EFailable <int> .Failure(e);
Assert.That(x.Equals(y), Is.True);
}
public void ValuePropagationInFlatMap()
{
var hallo = EFailable <string> .Success("hallo");
var sp = EFailable <string> .Success(" ");
var result = hallo.FlatMap(h => sp.Map(space => h + space + "welt"));
Assert.That(result.Or("nix da"), Is.EqualTo("hallo welt"));
}
public void Map_NestingInFlatMap()
{
var flag1 = EFailable <int> .Success(1);
var flag2 = EFailable <int> .Success(2);
var result = flag1.FlatMap(outerInt => flag2.Map(innerInt => outerInt + innerInt));
Assert.That(result.Or(-999), Is.EqualTo(3));
}
public void OrWithParallelType_Failure()
{
var myOtherSubclass = new MyOtherSubclass();
var underTest = EFailable <MyClass> .Failure(new ArgumentException( "irrelevant" ));
var actualValue = underTest.Or(myOtherSubclass);
Assert.That(actualValue, Is.SameAs(myOtherSubclass));
}