public void TestEqualityOnExtensions()
{
TestAllExtensionsLite msg = TestAllExtensionsLite.DefaultInstance;
TestAllExtensionsLite copy = msg.ToBuilder().Build();
Assert.AreEqual(msg.GetHashCode(), copy.GetHashCode());
Assert.IsTrue(msg.Equals(copy));
msg = msg.ToBuilder().SetExtension(UnitTestLiteProtoFile.OptionalStringExtensionLite, "Hi").Build();
Assert.AreNotEqual(msg.GetHashCode(), copy.GetHashCode());
Assert.IsFalse(msg.Equals(copy));
copy = copy.ToBuilder().SetExtension(UnitTestLiteProtoFile.OptionalStringExtensionLite, "Hi").Build();
Assert.AreEqual(msg.GetHashCode(), copy.GetHashCode());
Assert.IsTrue(msg.Equals(copy));
}