public void GlobalSettingOnlyTest()
        {
            var global = new[]
            {
                new ConfigSetting("a", "1"),
                new ConfigSetting("b", "2"),
                new ConfigSetting("c", "3"),
            };

            var effective = EffectiveSettingsEvaluator.GetEffective(global, ConfigSettingScope.Global);

            var allDic       = global.ToDictionary(x => x.Key, x => x.Definition);
            var effectiveDic = effective.ToDictionary(x => x.Key, x => x.Definition);

            CollectionAssert.AreEquivalent(allDic, effectiveDic);
        }