public void TestApplicative(string foo, int bar, bool?fooBar, bool expected)
{
var dto = ValidateString(foo)
.Select(FuncExtensions.Curry <string, int, bool, Dto>(Dto.Apply))
.Apply(ValidateInt(bar))
.Apply(ValidateBool(fooBar));
Assert.AreEqual(expected, dto.Match(
left: error => false,
right: val => true));
}
public void TestTraverseMaybe(int[] testData, bool isSome, int[] expected)
{
Func <int, bool> greaterThanFour = i => i > 4;
var keepGreaterThanFour = FuncExtensions.Curry <Func <int, bool>, int, IMaybe <int> >(KeepIf)(greaterThanFour);
var result = testData.Traverse(keepGreaterThanFour);
Assert.AreEqual(isSome, !result.IsEmpty);
if (isSome)
{
result.Match(
just: actual => Io.Apply(() => Assert.AreEqual(expected, actual)),
nothing: () => Io.Apply(() => Assert.Fail("Expected to get a result for input {0} but got nothing instead", testData))).UnsafePerformIo();
}
}