1 files changed, 227 insertions, 0 deletions
diff --git a/csharp/src/ProtocolBuffers.Test/Compatibility/CompatibilityTests.cs b/csharp/src/ProtocolBuffers.Test/Compatibility/CompatibilityTests.cs
new file mode 100644
index 00000000..a050827e
--- /dev/null
+++ b/csharp/src/ProtocolBuffers.Test/Compatibility/CompatibilityTests.cs
@@ -0,0 +1,227 @@
+using System;
+using Google.ProtocolBuffers.TestProtos;
+using NUnit.Framework;
+
+
+namespace Google.ProtocolBuffers.Compatibility
+{
+    /// <summary>
+    /// This abstract base implements several tests to ensure that well-known messages can be written
+    /// and read to/from various formats without losing data.  Implementations override the two serialization
+    /// methods to provide the tests with the means to read and write for a given format.
+    /// </summary>
+    public abstract class CompatibilityTests
+    {
+        protected abstract object SerializeMessage<TMessage, TBuilder>(TMessage message)
+            where TMessage : IMessageLite<TMessage, TBuilder>
+            where TBuilder : IBuilderLite<TMessage, TBuilder>;
+
+        protected abstract TBuilder DeserializeMessage<TMessage, TBuilder>(object message, TBuilder builder, ExtensionRegistry registry)
+            where TMessage : IMessageLite<TMessage, TBuilder>
+            where TBuilder : IBuilderLite<TMessage, TBuilder>;
+
+        protected virtual void AssertOutputEquals(object lhs, object rhs)
+        {
+            Assert.AreEqual(lhs, rhs);
+        }
+
+        [Test]
+        public virtual void RoundTripWithEmptyChildMessageSize()
+        {
+            SizeMessage1 msg = SizeMessage1.CreateBuilder()
+                .SetField100(100)
+                .SetField15(SizeMessage1SubMessage.DefaultInstance)
+                .BuildPartial();
+            byte[] contents = msg.ToByteArray();
+            object content = SerializeMessage<SizeMessage1, SizeMessage1.Builder>(msg);
+
+            SizeMessage1 copy = DeserializeMessage<SizeMessage1, SizeMessage1.Builder>(content, SizeMessage1.CreateBuilder(), ExtensionRegistry.Empty).BuildPartial();
+
+            Assert.AreEqual(msg, copy);
+            AssertOutputEquals(content, SerializeMessage<SizeMessage1, SizeMessage1.Builder>(copy));
+            Assert.AreEqual(Convert.ToBase64String(contents), Convert.ToBase64String(copy.ToByteArray()));
+        }
+
+        [Test]
+        public virtual void RoundTripWithEmptyChildMessageSpeed()
+        {
+            SpeedMessage1 msg = SpeedMessage1.CreateBuilder()
+                .SetField100(100)
+                .SetField15(SpeedMessage1SubMessage.DefaultInstance)
+                .BuildPartial();
+            byte[] contents = msg.ToByteArray();
+            object content = SerializeMessage<SpeedMessage1, SpeedMessage1.Builder>(msg);
+
+            SpeedMessage1 copy = DeserializeMessage<SpeedMessage1, SpeedMessage1.Builder>(content, SpeedMessage1.CreateBuilder(), ExtensionRegistry.Empty).BuildPartial();
+
+            Assert.AreEqual(msg, copy);
+            AssertOutputEquals(content, SerializeMessage<SpeedMessage1, SpeedMessage1.Builder>(copy));
+            Assert.AreEqual(Convert.ToBase64String(contents), Convert.ToBase64String(copy.ToByteArray()));
+        }
+
+        [Test]
+        public virtual void RoundTripMessage1OptimizeSize()
+        {
+            SizeMessage1 msg = SizeMessage1.CreateBuilder().MergeFrom(TestResources.google_message1).Build();
+            object content = SerializeMessage<SizeMessage1, SizeMessage1.Builder>(msg);
+
+            SizeMessage1 copy = DeserializeMessage<SizeMessage1, SizeMessage1.Builder>(content, SizeMessage1.CreateBuilder(), ExtensionRegistry.Empty).Build();
+
+            Assert.AreEqual(msg, copy);
+            AssertOutputEquals(content, SerializeMessage<SizeMessage1, SizeMessage1.Builder>(copy));
+            Assert.AreEqual(Convert.ToBase64String(TestResources.google_message1), Convert.ToBase64String(copy.ToByteArray()));
+        }
+
+        [Test]
+        public virtual void RoundTripMessage2OptimizeSize()
+        {
+            SizeMessage2 msg = SizeMessage2.CreateBuilder().MergeFrom(TestResources.google_message2).Build();
+            object content = SerializeMessage<SizeMessage2, SizeMessage2.Builder>(msg);
+
+            SizeMessage2 copy = DeserializeMessage<SizeMessage2, SizeMessage2.Builder>(content, SizeMessage2.CreateBuilder(), ExtensionRegistry.Empty).Build();
+
+            Assert.AreEqual(msg, copy);
+            AssertOutputEquals(content, SerializeMessage<SizeMessage2, SizeMessage2.Builder>(copy));
+            Assert.AreEqual(Convert.ToBase64String(TestResources.google_message2), Convert.ToBase64String(copy.ToByteArray()));
+        }
+
+        [Test]
+        public virtual void RoundTripMessage1OptimizeSpeed()
+        {
+            SpeedMessage1 msg = SpeedMessage1.CreateBuilder().MergeFrom(TestResources.google_message1).Build();
+            object content = SerializeMessage<SpeedMessage1, SpeedMessage1.Builder>(msg);
+
+            SpeedMessage1 copy = DeserializeMessage<SpeedMessage1, SpeedMessage1.Builder>(content, SpeedMessage1.CreateBuilder(), ExtensionRegistry.Empty).Build();
+
+            Assert.AreEqual(msg, copy);
+            AssertOutputEquals(content, SerializeMessage<SpeedMessage1, SpeedMessage1.Builder>(copy));
+            Assert.AreEqual(Convert.ToBase64String(TestResources.google_message1), Convert.ToBase64String(copy.ToByteArray()));
+        }
+
+        [Test]
+        public virtual void RoundTripMessage2OptimizeSpeed()
+        {
+            SpeedMessage2 msg = SpeedMessage2.CreateBuilder().MergeFrom(TestResources.google_message2).Build();
+            object content = SerializeMessage<SpeedMessage2, SpeedMessage2.Builder>(msg);
+
+            SpeedMessage2 copy = DeserializeMessage<SpeedMessage2, SpeedMessage2.Builder>(content, SpeedMessage2.CreateBuilder(), ExtensionRegistry.Empty).Build();
+
+            Assert.AreEqual(msg, copy);
+            AssertOutputEquals(content, SerializeMessage<SpeedMessage2, SpeedMessage2.Builder>(copy));
+            Assert.AreEqual(Convert.ToBase64String(TestResources.google_message2), Convert.ToBase64String(copy.ToByteArray()));
+        }
+
+        #region Test message builders
+
+        protected static TestAllTypes.Builder AddAllTypes(TestAllTypes.Builder builder)
+        {
+            return builder.SetOptionalInt32(1001)
+                .SetOptionalInt64(1001)
+                .SetOptionalUint32(1001)
+                .SetOptionalUint64(1001)
+                .SetOptionalSint32(-1001)
+                .SetOptionalSint64(-1001)
+                .SetOptionalFixed32(1001)
+                .SetOptionalFixed64(1001)
+                .SetOptionalSfixed32(-1001)
+                .SetOptionalSfixed64(-1001)
+                .SetOptionalFloat(1001.1001f)
+                .SetOptionalDouble(1001.1001)
+                .SetOptionalBool(true)
+                .SetOptionalString("this is a string value")
+                .SetOptionalBytes(ByteString.CopyFromUtf8("this is an array of bytes"))
+                .SetOptionalGroup(new TestAllTypes.Types.OptionalGroup.Builder().SetA(1001))
+                .SetOptionalNestedMessage(new TestAllTypes.Types.NestedMessage.Builder().SetBb(1001))
+                .SetOptionalNestedEnum(TestAllTypes.Types.NestedEnum.FOO)
+            ;
+        }
+
+        protected static TestAllTypes.Builder AddRepeatedTypes(TestAllTypes.Builder builder, int size)
+        {
+            //repeated values
+            for (int i = 0; i < size; i++)
+                builder.AddRepeatedInt32(1001 + i)
+                .AddRepeatedInt64(1001)
+                .AddRepeatedUint32(1001)
+                .AddRepeatedUint64(1001)
+                .AddRepeatedSint32(-1001)
+                .AddRepeatedSint64(-1001)
+                .AddRepeatedFixed32(1001)
+                .AddRepeatedFixed64(1001)
+                .AddRepeatedSfixed32(-1001)
+                .AddRepeatedSfixed64(-1001)
+                .AddRepeatedFloat(1001.1001f)
+                .AddRepeatedDouble(1001.1001)
+                .AddRepeatedBool(true)
+                .AddRepeatedString("this is a string value")
+                .AddRepeatedBytes(ByteString.CopyFromUtf8("this is an array of bytes"))
+                .AddRepeatedGroup(new TestAllTypes.Types.RepeatedGroup.Builder().SetA(1001))
+                .AddRepeatedNestedMessage(new TestAllTypes.Types.NestedMessage.Builder().SetBb(1001))
+                .AddRepeatedNestedEnum(TestAllTypes.Types.NestedEnum.FOO)
+            ;
+            return builder;
+        }
+
+        protected static TestPackedTypes.Builder AddPackedTypes(TestPackedTypes.Builder builder, int size)
+        {
+            for(int i=0; i < size; i++ )
+                builder.AddPackedInt32(1001)
+                .AddPackedInt64(1001)
+                .AddPackedUint32(1001)
+                .AddPackedUint64(1001)
+                .AddPackedSint32(-1001)
+                .AddPackedSint64(-1001)
+                .AddPackedFixed32(1001)
+                .AddPackedFixed64(1001)
+                .AddPackedSfixed32(-1001)
+                .AddPackedSfixed64(-1001)
+                .AddPackedFloat(1001.1001f)
+                .AddPackedDouble(1001.1001)
+                .AddPackedBool(true)
+                .AddPackedEnum(ForeignEnum.FOREIGN_FOO)
+            ;
+            return builder;
+        }
+
+        #endregion
+
+        [Test]
+        public void TestRoundTripAllTypes()
+        {
+            TestAllTypes msg = AddAllTypes(new TestAllTypes.Builder()).Build();
+            object content = SerializeMessage<TestAllTypes, TestAllTypes.Builder>(msg);
+
+            TestAllTypes copy = DeserializeMessage<TestAllTypes, TestAllTypes.Builder>(content, TestAllTypes.CreateBuilder(), ExtensionRegistry.Empty).Build();
+
+            Assert.AreEqual(msg, copy);
+            AssertOutputEquals(content, SerializeMessage<TestAllTypes, TestAllTypes.Builder>(copy));
+            Assert.AreEqual(Convert.ToBase64String(msg.ToByteArray()), Convert.ToBase64String(copy.ToByteArray()));
+        }
+
+        [Test]
+        public void TestRoundTripRepeatedTypes()
+        {
+            TestAllTypes msg = AddRepeatedTypes(new TestAllTypes.Builder(), 5).Build();
+            object content = SerializeMessage<TestAllTypes, TestAllTypes.Builder>(msg);
+
+            TestAllTypes copy = DeserializeMessage<TestAllTypes, TestAllTypes.Builder>(content, TestAllTypes.CreateBuilder(), ExtensionRegistry.Empty).Build();
+
+            Assert.AreEqual(msg, copy);
+            AssertOutputEquals(content, SerializeMessage<TestAllTypes, TestAllTypes.Builder>(copy));
+            Assert.AreEqual(Convert.ToBase64String(msg.ToByteArray()), Convert.ToBase64String(copy.ToByteArray()));
+        }
+
+        [Test]
+        public void TestRoundTripPackedTypes()
+        {
+            TestPackedTypes msg = AddPackedTypes(new TestPackedTypes.Builder(), 5).Build();
+            object content = SerializeMessage<TestPackedTypes, TestPackedTypes.Builder>(msg);
+
+            TestPackedTypes copy = DeserializeMessage<TestPackedTypes, TestPackedTypes.Builder>(content, TestPackedTypes.CreateBuilder(), ExtensionRegistry.Empty).Build();
+
+            Assert.AreEqual(msg, copy);
+            AssertOutputEquals(content, SerializeMessage<TestPackedTypes, TestPackedTypes.Builder>(copy));
+            Assert.AreEqual(Convert.ToBase64String(msg.ToByteArray()), Convert.ToBase64String(copy.ToByteArray()));
+        }
+    }
+}