public Task Null_Selector_With_ResultSelector_Throws()
{
return(Assert.ThrowsAsync <ArgumentNullException>(
AssertionUtilities.SelectorName,
() => StringTask.FlatMap((Func <string, Task <string> >)null, (s, y) => y)
));
}
public Task Void_Task_OverLoad_Null_Selector_Throws_With_ResultSelector()
{
return(Assert.ThrowsAsync <ArgumentNullException>(
AssertionUtilities.SelectorName,
() => StringTask.FlatMap(null, () => "")
));
}
public Task Void_Task_OverLoad_Null_Selector_Throws()
{
return(Assert.ThrowsAsync <ArgumentNullException>(
AssertionUtilities.SelectorName,
() => StringTask.FlatMap((Func <Task <string> >)null)
));
}
public Task Void_Task_OverLoad_Null_ResultSelector_Throws_With_Single_ResultSelector()
{
return(Assert.ThrowsAsync <ArgumentNullException>(
AssertionUtilities.ResultSelector,
() => StringTask.FlatMap(() => Task.FromResult("foo"), (Func <string>)null)
));
}
public async Task String_Task_FlatMap_Void_Task_With_ResultSelector()
{
var flatMapped = StringTask.FlatMap(s => VoidTask, s => s + 1);
Assert.Equal(0, _flatMapCounter);
Assert.Equal("Hello1", await flatMapped);
Assert.Equal(1, _flatMapCounter);
}
public async Task String_Task_FlatMap_String_Task()
{
var flatMapped = await StringTask.FlatMap(async s => {
await Task.Delay(100);
return(s + "World");
});
Assert.Equal("HelloWorld", flatMapped);
}
public async Task String_Task_FlatMap_Void_Task()
{
var flatMapped = StringTask.FlatMap(s => VoidTask);
Assert.Equal(0, _flatMapCounter);
await flatMapped;
Assert.Equal(1, _flatMapCounter);
}
public async Task String_Task_FlatMap_String_Task_With_ResultSelector()
{
var flatMapped = await StringTask
.FlatMap(async s => {
await VoidTask;
return(s + "World");
}, (s, s1) => s + s1);
Assert.Equal("HelloHelloWorld", flatMapped);
}
