MongoDB.DriverUnitTests.MongoCollectionSettingsTests.TestReadPreference C# (CSharp) Метод

        public void TestReadPreference()
        {
            var settings = new MongoCollectionSettings();
            Assert.AreEqual(null, settings.ReadPreference);

            var readPreference = ReadPreference.Secondary;
            settings.ReadPreference = readPreference;
            Assert.AreEqual(readPreference, settings.ReadPreference);

            settings.Freeze();
            Assert.AreEqual(readPreference, settings.ReadPreference);
            Assert.Throws<InvalidOperationException>(() => { settings.ReadPreference = readPreference; });
        }