public void MapError_unit_result_returns_success()
{
UnitResult <E> result = UnitResult.Success <E>();
var invocations = 0;
Result actual = result.MapError(error =>
{
invocations++;
return($"{error} {error}");
});
actual.IsSuccess.Should().BeTrue();
invocations.Should().Be(0);
}
public async Task MapError_E_unit_result_returns_success()
{
UnitResult <E> result = UnitResult.Success <E>();
var invocations = 0;
UnitResult <E2> actual = await result.MapError(error =>
{
invocations++;
return(Task.FromResult(E2.Value));
});
actual.IsSuccess.Should().BeTrue();
invocations.Should().Be(0);
}
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 async Task MapError_E_unit_result_returns_new_failure()
{
UnitResult <E> result = UnitResult.Failure(E.Value);
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);
}
