public void TestFooBarRunner()
{
var writer = new StringWriter();
Console.SetOut(writer);
new FooBarRunner(1, 20, 1).ApplyRules(
1. Output("ab").If(TheThing.IsDivisibleBy(2).And(TheThing.IsDivisibleBy(3))),
2. Output("a").If(TheThing.IsDivisibleBy(2)),
3. Output("b").If(TheThing.IsDivisibleBy(3))
);
string result = @"1
a
b
a
5
ab
7
a
b
a
11
ab
13
a
b
a
17
ab
19
a
";
Assert.AreEqual(writer.ToString(), result);
}
public void TestContradictingRules()
{
var writer = new StringWriter();
Console.SetOut(writer);
Assert.Throws <ContradictingRulesException <int> >(() => {
new FooBarRunner(1, 20, 1).ApplyRules(
1.Output("a").If(TheThing.IsDivisibleBy(2)),
1.Output("b").If(TheThing.IsDivisibleBy(3))
);
});
}
public void TestTheThing()
{
var predicate = TheThing.IsDivisibleBy(2);
Assert.IsTrue(predicate(4));
Assert.IsFalse(predicate(3));
predicate = TheThing.IsPositive();
Assert.IsTrue(predicate(1));
Assert.IsFalse(predicate(0));
Assert.IsFalse(predicate(-1));
predicate = TheThing.IsNegative();
Assert.IsFalse(predicate(1));
Assert.IsFalse(predicate(0));
Assert.IsTrue(predicate(-1));
predicate = TheThing.IsBetween(10, 20);
Assert.IsTrue(predicate(10));
Assert.IsTrue(predicate(15));
Assert.IsTrue(predicate(20));
Assert.IsFalse(predicate(9));
Assert.IsFalse(predicate(21));
predicate = TheThing.IsGreaterThan(5);
Assert.IsFalse(predicate(4));
Assert.IsFalse(predicate(5));
Assert.IsTrue(predicate(6));
predicate = TheThing.IsGreaterThanOrEqualTo(5);
Assert.IsFalse(predicate(4));
Assert.IsTrue(predicate(5));
Assert.IsTrue(predicate(6));
predicate = TheThing.IsLessThan(5);
Assert.IsTrue(predicate(4));
Assert.IsFalse(predicate(5));
Assert.IsFalse(predicate(6));
predicate = TheThing.IsLessThanOrEqualTo(5);
Assert.IsTrue(predicate(4));
Assert.IsTrue(predicate(5));
Assert.IsFalse(predicate(6));
var stringPredicate = TheThing.Is("Hello");
Assert.IsTrue(stringPredicate("Hello"));
Assert.IsFalse(stringPredicate("hello"));
stringPredicate = TheThing.IsNot("Hello");
Assert.IsFalse(stringPredicate("Hello"));
Assert.IsTrue(stringPredicate("hello"));
}
