public void TestSelectMany()
{
var r4 = from x in Faultable.Return(2)
from y in Faultable.Return(() => 6 / x)
from z in Faultable.Return(4)
select x + y + z;
Assert.IsFalse(r4.IsFaulted);
Assert.AreEqual(9, r4.Value);
var r5 = from x in Faultable.Return(0)
from y in Faultable.Return(() => 6 / x)
from z in Faultable.Return(7)
select x + y + z;
Assert.IsTrue(r5.IsFaulted);
Assert.IsTrue(r5.Error is DivideByZeroException);
}
public void TestBind()
{
var r1 = Faultable.Return(2)
.Bind(x => x + 2)
.Bind(y => 8 / y);
Assert.IsFalse(r1.IsFaulted);
Assert.AreEqual(2, r1.Value);
var r2 = Faultable.Return(0)
.Bind(x => x + 6 / x)
.Bind(y => y + 7);
Assert.IsTrue(r2.IsFaulted);
Assert.IsTrue(r2.Error is DivideByZeroException);
var r3 = Faultable.Return(2)
.Bind(x => x - 2)
.Bind(y => 7 / y);
Assert.IsTrue(r3.IsFaulted);
Assert.IsTrue(r3.Error is DivideByZeroException);
}