public void Passing_Null_Function__Throws_ArgumentNullException()
{
Assert.Throws <ArgumentNullException>(() => {
Func <string, IAsyncMaybe <bool> > function = null;
AsyncMaybe.Value("foo").FlatMapAsync(function);
});
}
ResultSelector_Overload__Flattening_From_String_Maybe_With_value_To_String_Maybe_Without_Value__Expects_String_Maybe_Without_Value()
{
const string input = "hello";
await AsyncMaybe.Value(input)
.FlatMapAsync(x => AsyncMaybe.None <string>(), (x, y) => x.Length + y.Length);
}
Maybe_String_Whose_Property_HasValue_Is_True_Flatmapping_Some__Pasing_Null_ResultSelector__ArgumentNullReferenceException_Thrown()
{
Assert.Throws <ArgumentNullException>(() => {
Func <string, string, string> resultSelector = null;
AsyncMaybe.Value("foo").FlatMapAsync(AsyncMaybe.Value, resultSelector);
});
}
Maybe_String_Whose_Property_HasValue_Is_True__Pasing_Null_Selector__ArgumentNullReferenceException_Thrown()
{
Assert.Throws <ArgumentNullException>(() => {
Func <string, IAsyncMaybe <string> > selector = null;
AsyncMaybe.Value("foo").FlatMapAsync(selector);
});
}
Flattening_From_String_Maybe_With_value_To_String_Maybe_Without_Value__Expects_String_Maybe_Without_Value()
{
const string input = "hello";
await AsyncMaybe.Value(input)
.FlatMapAsync(x => AsyncMaybe.None <int>())
.AssertNone();
}
ResultSelector_Overload__Flattening_From_String_Maybe_With_value_To_Nullable_Int_Without_Value__Expects_String_Maybe_Without_Value()
{
const string input = "hello";
int? nullableInt = null;
await AsyncMaybe.Value(input)
.FlatMapAsync(async x => {
await AssertionUtilities.Delay;
return(nullableInt);
}, (x, y) => x.Length + y)
.AssertNone();
}
Flattening_From_String_Maybe_With_value_To_Nullable_Int_With_Value__Expects_String_Maybe_With_Value()
{
const string input = "hello";
int? nullabelInt = 2;
await AsyncMaybe.Value(input)
.FlatMapAsync(async x => {
await AssertionUtilities.Delay;
return(nullabelInt);
})
.AssertValue(nullabelInt.Value);
}