public void TestMergeConfig() { var toMerge = new Config(); toMerge.Lines.Add(new ConfigLine { Key = "key", Value = "New Value", Section = "section" }); config.Lines.Add(new ConfigLine { Key = "key", Value = "Old Value", Section = "section" }); var result = config.Merge(toMerge); Assert.AreEqual(1, result.Lines.Count); Assert.AreEqual("New Value", result.Lines[0].Value); }