public void NullConditions()
{
MultiTextBase text = new MultiTextBase();
Assert.AreSame(string.Empty, text["foo"], "never before heard of alternative should give back an empty string");
Assert.AreSame(string.Empty, text["foo"], "second time");
Assert.AreSame(string.Empty, text.GetBestAlternative("fox"));
text.SetAlternative("zox", "");
Assert.AreSame(string.Empty, text["zox"]);
text.SetAlternative("zox", null);
Assert.AreSame(string.Empty, text["zox"], "should still be empty string after setting to null");
text.SetAlternative("zox", "something");
text.SetAlternative("zox", null);
Assert.AreSame(string.Empty, text["zox"], "should still be empty string after setting something and then back to null");
}
public void UsesNextAlternativeWhenMissing()
{
MultiTextBase MultiTextBase = new MultiTextBase();
MultiTextBase["wsWithNullElement"] = null;
MultiTextBase["wsWithEmptyElement"] = "";
MultiTextBase["wsWithContent"] = "hello";
Assert.AreEqual(String.Empty, MultiTextBase.GetExactAlternative("missingWs"));
Assert.AreEqual(String.Empty, MultiTextBase.GetExactAlternative("wsWithEmptyElement"));
Assert.AreEqual("hello", MultiTextBase.GetBestAlternative("missingWs"));
Assert.AreEqual("hello", MultiTextBase.GetBestAlternative("wsWithEmptyElement"));
Assert.AreEqual("hello*", MultiTextBase.GetBestAlternative("wsWithEmptyElement", "*"));
Assert.AreEqual("hello", MultiTextBase.GetBestAlternative("wsWithNullElement"));
Assert.AreEqual("hello*", MultiTextBase.GetBestAlternative("wsWithNullElement", "*"));
Assert.AreEqual("hello", MultiTextBase.GetExactAlternative("wsWithContent"));
Assert.AreEqual("hello", MultiTextBase.GetBestAlternative("wsWithContent"));
Assert.AreEqual("hello", MultiTextBase.GetBestAlternative("wsWithContent", "*"));
}