public void TestNullSubString()
{
var function = new IndexOfFunction();
Assert.That(function.Evaluate("a", null), Is.EqualTo(0));
}
public void TestNullBoth()
{
var function = new IndexOfFunction();
Assert.That(function.Evaluate(null, null), Is.EqualTo(0));
}
public void TestNullSource()
{
var function = new IndexOfFunction();
Assert.That(function.Evaluate(null, "a"), Is.EqualTo(-1));
}
public void TestNotContains()
{
var function = new IndexOfFunction();
Assert.That(function.Evaluate("abcefg", "d"), Is.EqualTo(-1));
}
