public static async Task FoldTImplicitFunc_NullValue_Throws(Func <int, int, int> folder)
{
var actual = await Record.ExceptionAsync(
() => CollectionTaskExtensions.FoldT(null, folder)).ConfigureAwait(false);
var ane = Assert.IsType <ArgumentNullException>(actual);
Assert.Contains("enumerableTaskValue", ane.Message, Ordinal);
}
public static async Task MapTTask_NullValue_Throws(Func <string, Task <int> > mapper)
{
var actual = await Record.ExceptionAsync(
() => CollectionTaskExtensions.MapTAsync(null, mapper)).ConfigureAwait(false);
var ane = Assert.IsType <ArgumentNullException>(actual);
Assert.Contains("enumerableTaskValue", ane.Message, Ordinal);
}
