public void TestSubStringBeforeBeforeNull()
{
var function = new SubStringBeforeFunction();
Assert.That(function.Evaluate("abcdefg", null), Is.EqualTo("abcdefg"));
}
public void TestSubStringBeforeNonExistingBefore()
{
var function = new SubStringBeforeFunction();
Assert.That(function.Evaluate("abcdefg", "xyz"), Is.EqualTo("abcdefg"));
}
public void TestSubStringBeforeAllNull()
{
var function = new SubStringBeforeFunction();
Assert.That(function.Evaluate(null, null), Is.EqualTo(""));
}