public void WriterSelectManyAndLogNumberLinqQuerySyntax()
{
var m1 = WriterString.Return(3);
var m2 = WriterString.Return(5);
var mr =
from n1 in m1
from _ in LogNumber(n1)
from n2 in m2
from __ in LogNumber(n2)
select n1 *n2;
var actual = mr.RunWriter;
Assert.That(actual.Item1, Is.EqualTo(3 * 5));
Assert.That(actual.Item2.List, Is.EqualTo(new[] { "Got number 3", "Got number 5" }));
}
public void WriterSelectManyAndTellLinqQuerySyntax()
{
var m1 = WriterString.Return("Hello");
var m2 = WriterString.Return(2);
var mr =
from s in m1
from _ in TellHelper(string.Format("s = {0}", s))
from n in m2
from __ in TellHelper(string.Format("n = {0}", n))
select string.Concat(Enumerable.Repeat(s, n));
var actual = mr.RunWriter;
Assert.That(actual.Item1, Is.EqualTo("HelloHello"));
Assert.That(actual.Item2.List, Is.EqualTo(new[] { "s = Hello", "n = 2" }));
}
private static Writer <ListMonoid <string>, string, Unit> TellHelper(string s)
{
return(WriterString.Tell(new ListMonoid <string>(s)));
}
