1 files changed, 350 insertions, 0 deletions
diff --git a/csharp/src/ProtocolBuffers.Test/DescriptorsTest.cs b/csharp/src/ProtocolBuffers.Test/DescriptorsTest.cs
new file mode 100644
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+++ b/csharp/src/ProtocolBuffers.Test/DescriptorsTest.cs
@@ -0,0 +1,350 @@
+#region Copyright notice and license
+
+// Protocol Buffers - Google's data interchange format
+// Copyright 2008 Google Inc.  All rights reserved.
+// http://github.com/jskeet/dotnet-protobufs/
+// Original C++/Java/Python code:
+// http://code.google.com/p/protobuf/
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#endregion
+
+using System.Text;
+using Google.ProtocolBuffers.Descriptors;
+using Google.ProtocolBuffers.TestProtos;
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+
+namespace Google.ProtocolBuffers
+{
+    /// <summary>
+    /// Tests for descriptors. (Not in its own namespace or broken up into individual classes as the
+    /// size doesn't warrant it. On the other hand, this makes me feel a bit dirty...)
+    /// </summary>
+    [TestClass]
+    public class DescriptorsTest
+    {
+        [TestMethod]
+        public void FileDescriptor()
+        {
+            FileDescriptor file = UnitTestProtoFile.Descriptor;
+
+            Assert.AreEqual("google/protobuf/unittest.proto", file.Name);
+            Assert.AreEqual("protobuf_unittest", file.Package);
+
+            Assert.AreEqual("UnittestProto", file.Options.JavaOuterClassname);
+            Assert.AreEqual("google/protobuf/unittest.proto", file.Proto.Name);
+
+// TODO(jonskeet): Either change to expect 2 dependencies, or don't emit them.
+//      Assert.AreEqual(2, file.Dependencies.Count);
+            Assert.AreEqual(UnitTestImportProtoFile.Descriptor, file.Dependencies[1]);
+
+            MessageDescriptor messageType = TestAllTypes.Descriptor;
+            Assert.AreEqual(messageType, file.MessageTypes[0]);
+            Assert.AreEqual(messageType, file.FindTypeByName<MessageDescriptor>("TestAllTypes"));
+            Assert.IsNull(file.FindTypeByName<MessageDescriptor>("NoSuchType"));
+            Assert.IsNull(file.FindTypeByName<MessageDescriptor>("protobuf_unittest.TestAllTypes"));
+            for (int i = 0; i < file.MessageTypes.Count; i++)
+            {
+                Assert.AreEqual(i, file.MessageTypes[i].Index);
+            }
+
+            Assert.AreEqual(file.EnumTypes[0], file.FindTypeByName<EnumDescriptor>("ForeignEnum"));
+            Assert.IsNull(file.FindTypeByName<EnumDescriptor>("NoSuchType"));
+            Assert.IsNull(file.FindTypeByName<EnumDescriptor>("protobuf_unittest.ForeignEnum"));
+            Assert.AreEqual(1, UnitTestImportProtoFile.Descriptor.EnumTypes.Count);
+            Assert.AreEqual("ImportEnum", UnitTestImportProtoFile.Descriptor.EnumTypes[0].Name);
+            for (int i = 0; i < file.EnumTypes.Count; i++)
+            {
+                Assert.AreEqual(i, file.EnumTypes[i].Index);
+            }
+
+            ServiceDescriptor service = TestGenericService.Descriptor;
+            Assert.AreEqual(service, UnitTestGenericServices.Descriptor.Services[0]);
+            Assert.AreEqual(service,
+                            UnitTestGenericServices.Descriptor.FindTypeByName<ServiceDescriptor>("TestGenericService"));
+            Assert.IsNull(UnitTestGenericServices.Descriptor.FindTypeByName<ServiceDescriptor>("NoSuchType"));
+            Assert.IsNull(
+                UnitTestGenericServices.Descriptor.FindTypeByName<ServiceDescriptor>(
+                    "protobuf_unittest.TestGenericService"));
+            Assert.AreEqual(0, UnitTestImportProtoFile.Descriptor.Services.Count);
+            for (int i = 0; i < file.Services.Count; i++)
+            {
+                Assert.AreEqual(i, file.Services[i].Index);
+            }
+
+            FieldDescriptor extension = UnitTestProtoFile.OptionalInt32Extension.Descriptor;
+            Assert.AreEqual(extension, file.Extensions[0]);
+            Assert.AreEqual(extension, file.FindTypeByName<FieldDescriptor>("optional_int32_extension"));
+            Assert.IsNull(file.FindTypeByName<FieldDescriptor>("no_such_ext"));
+            Assert.IsNull(file.FindTypeByName<FieldDescriptor>("protobuf_unittest.optional_int32_extension"));
+            Assert.AreEqual(0, UnitTestImportProtoFile.Descriptor.Extensions.Count);
+            for (int i = 0; i < file.Extensions.Count; i++)
+            {
+                Assert.AreEqual(i, file.Extensions[i].Index);
+            }
+        }
+
+        [TestMethod]
+        public void MessageDescriptor()
+        {
+            MessageDescriptor messageType = TestAllTypes.Descriptor;
+            MessageDescriptor nestedType = TestAllTypes.Types.NestedMessage.Descriptor;
+
+            Assert.AreEqual("TestAllTypes", messageType.Name);
+            Assert.AreEqual("protobuf_unittest.TestAllTypes", messageType.FullName);
+            Assert.AreEqual(UnitTestProtoFile.Descriptor, messageType.File);
+            Assert.IsNull(messageType.ContainingType);
+            Assert.AreEqual(DescriptorProtos.MessageOptions.DefaultInstance, messageType.Options);
+            Assert.AreEqual("TestAllTypes", messageType.Proto.Name);
+
+            Assert.AreEqual("NestedMessage", nestedType.Name);
+            Assert.AreEqual("protobuf_unittest.TestAllTypes.NestedMessage", nestedType.FullName);
+            Assert.AreEqual(UnitTestProtoFile.Descriptor, nestedType.File);
+            Assert.AreEqual(messageType, nestedType.ContainingType);
+
+            FieldDescriptor field = messageType.Fields[0];
+            Assert.AreEqual("optional_int32", field.Name);
+            Assert.AreEqual(field, messageType.FindDescriptor<FieldDescriptor>("optional_int32"));
+            Assert.IsNull(messageType.FindDescriptor<FieldDescriptor>("no_such_field"));
+            Assert.AreEqual(field, messageType.FindFieldByNumber(1));
+            Assert.IsNull(messageType.FindFieldByNumber(571283));
+            for (int i = 0; i < messageType.Fields.Count; i++)
+            {
+                Assert.AreEqual(i, messageType.Fields[i].Index);
+            }
+
+            Assert.AreEqual(nestedType, messageType.NestedTypes[0]);
+            Assert.AreEqual(nestedType, messageType.FindDescriptor<MessageDescriptor>("NestedMessage"));
+            Assert.IsNull(messageType.FindDescriptor<MessageDescriptor>("NoSuchType"));
+            for (int i = 0; i < messageType.NestedTypes.Count; i++)
+            {
+                Assert.AreEqual(i, messageType.NestedTypes[i].Index);
+            }
+
+            Assert.AreEqual(messageType.EnumTypes[0], messageType.FindDescriptor<EnumDescriptor>("NestedEnum"));
+            Assert.IsNull(messageType.FindDescriptor<EnumDescriptor>("NoSuchType"));
+            for (int i = 0; i < messageType.EnumTypes.Count; i++)
+            {
+                Assert.AreEqual(i, messageType.EnumTypes[i].Index);
+            }
+        }
+
+        [TestMethod]
+        public void FieldDescriptor()
+        {
+            MessageDescriptor messageType = TestAllTypes.Descriptor;
+            FieldDescriptor primitiveField = messageType.FindDescriptor<FieldDescriptor>("optional_int32");
+            FieldDescriptor enumField = messageType.FindDescriptor<FieldDescriptor>("optional_nested_enum");
+            FieldDescriptor messageField = messageType.FindDescriptor<FieldDescriptor>("optional_foreign_message");
+            FieldDescriptor cordField = messageType.FindDescriptor<FieldDescriptor>("optional_cord");
+            FieldDescriptor extension = UnitTestProtoFile.OptionalInt32Extension.Descriptor;
+            FieldDescriptor nestedExtension = TestRequired.Single.Descriptor;
+
+            Assert.AreEqual("optional_int32", primitiveField.Name);
+            Assert.AreEqual("protobuf_unittest.TestAllTypes.optional_int32",
+                            primitiveField.FullName);
+            Assert.AreEqual(1, primitiveField.FieldNumber);
+            Assert.AreEqual(messageType, primitiveField.ContainingType);
+            Assert.AreEqual(UnitTestProtoFile.Descriptor, primitiveField.File);
+            Assert.AreEqual(FieldType.Int32, primitiveField.FieldType);
+            Assert.AreEqual(MappedType.Int32, primitiveField.MappedType);
+            Assert.AreEqual(DescriptorProtos.FieldOptions.DefaultInstance, primitiveField.Options);
+            Assert.IsFalse(primitiveField.IsExtension);
+            Assert.AreEqual("optional_int32", primitiveField.Proto.Name);
+
+            Assert.AreEqual("optional_nested_enum", enumField.Name);
+            Assert.AreEqual(FieldType.Enum, enumField.FieldType);
+            Assert.AreEqual(MappedType.Enum, enumField.MappedType);
+            // Assert.AreEqual(TestAllTypes.Types.NestedEnum.Descriptor, enumField.EnumType);
+
+            Assert.AreEqual("optional_foreign_message", messageField.Name);
+            Assert.AreEqual(FieldType.Message, messageField.FieldType);
+            Assert.AreEqual(MappedType.Message, messageField.MappedType);
+            Assert.AreEqual(ForeignMessage.Descriptor, messageField.MessageType);
+
+            Assert.AreEqual("optional_cord", cordField.Name);
+            Assert.AreEqual(FieldType.String, cordField.FieldType);
+            Assert.AreEqual(MappedType.String, cordField.MappedType);
+            Assert.AreEqual(DescriptorProtos.FieldOptions.Types.CType.CORD, cordField.Options.Ctype);
+
+            Assert.AreEqual("optional_int32_extension", extension.Name);
+            Assert.AreEqual("protobuf_unittest.optional_int32_extension", extension.FullName);
+            Assert.AreEqual(1, extension.FieldNumber);
+            Assert.AreEqual(TestAllExtensions.Descriptor, extension.ContainingType);
+            Assert.AreEqual(UnitTestProtoFile.Descriptor, extension.File);
+            Assert.AreEqual(FieldType.Int32, extension.FieldType);
+            Assert.AreEqual(MappedType.Int32, extension.MappedType);
+            Assert.AreEqual(DescriptorProtos.FieldOptions.DefaultInstance,
+                            extension.Options);
+            Assert.IsTrue(extension.IsExtension);
+            Assert.AreEqual(null, extension.ExtensionScope);
+            Assert.AreEqual("optional_int32_extension", extension.Proto.Name);
+
+            Assert.AreEqual("single", nestedExtension.Name);
+            Assert.AreEqual("protobuf_unittest.TestRequired.single",
+                            nestedExtension.FullName);
+            Assert.AreEqual(TestRequired.Descriptor,
+                            nestedExtension.ExtensionScope);
+        }
+
+        [TestMethod]
+        public void FieldDescriptorLabel()
+        {
+            FieldDescriptor requiredField =
+                TestRequired.Descriptor.FindDescriptor<FieldDescriptor>("a");
+            FieldDescriptor optionalField =
+                TestAllTypes.Descriptor.FindDescriptor<FieldDescriptor>("optional_int32");
+            FieldDescriptor repeatedField =
+                TestAllTypes.Descriptor.FindDescriptor<FieldDescriptor>("repeated_int32");
+
+            Assert.IsTrue(requiredField.IsRequired);
+            Assert.IsFalse(requiredField.IsRepeated);
+            Assert.IsFalse(optionalField.IsRequired);
+            Assert.IsFalse(optionalField.IsRepeated);
+            Assert.IsFalse(repeatedField.IsRequired);
+            Assert.IsTrue(repeatedField.IsRepeated);
+        }
+        [TestMethod]
+        public void FieldDescriptorDefault()
+        {
+            MessageDescriptor d = TestAllTypes.Descriptor;
+            Assert.IsFalse(d.FindDescriptor<FieldDescriptor>("optional_int32").HasDefaultValue);
+            Assert.AreEqual<object>(0, d.FindDescriptor<FieldDescriptor>("optional_int32").DefaultValue);
+            Assert.IsTrue(d.FindDescriptor<FieldDescriptor>("default_int32").HasDefaultValue);
+            Assert.AreEqual<object>(41, d.FindDescriptor<FieldDescriptor>("default_int32").DefaultValue);
+
+            d = TestExtremeDefaultValues.Descriptor;
+            Assert.AreEqual<object>(TestExtremeDefaultValues.DefaultInstance.EscapedBytes,
+                d.FindDescriptor<FieldDescriptor>("escaped_bytes").DefaultValue);
+
+            Assert.AreEqual<object>(uint.MaxValue, d.FindDescriptor<FieldDescriptor>("large_uint32").DefaultValue);
+            Assert.AreEqual<object>(ulong.MaxValue, d.FindDescriptor<FieldDescriptor>("large_uint64").DefaultValue);
+        }
+        [TestMethod]
+        public void EnumDescriptor()
+        {
+            // Note: this test is a bit different to the Java version because there's no static way of getting to the descriptor
+            EnumDescriptor enumType = UnitTestProtoFile.Descriptor.FindTypeByName<EnumDescriptor>("ForeignEnum");
+            EnumDescriptor nestedType = TestAllTypes.Descriptor.FindDescriptor<EnumDescriptor>("NestedEnum");
+
+            Assert.AreEqual("ForeignEnum", enumType.Name);
+            Assert.AreEqual("protobuf_unittest.ForeignEnum", enumType.FullName);
+            Assert.AreEqual(UnitTestProtoFile.Descriptor, enumType.File);
+            Assert.IsNull(enumType.ContainingType);
+            Assert.AreEqual(DescriptorProtos.EnumOptions.DefaultInstance,
+                            enumType.Options);
+
+            Assert.AreEqual("NestedEnum", nestedType.Name);
+            Assert.AreEqual("protobuf_unittest.TestAllTypes.NestedEnum",
+                            nestedType.FullName);
+            Assert.AreEqual(UnitTestProtoFile.Descriptor, nestedType.File);
+            Assert.AreEqual(TestAllTypes.Descriptor, nestedType.ContainingType);
+
+            EnumValueDescriptor value = enumType.FindValueByName("FOREIGN_FOO");
+            Assert.AreEqual(value, enumType.Values[0]);
+            Assert.AreEqual("FOREIGN_FOO", value.Name);
+            Assert.AreEqual(4, value.Number);
+            Assert.AreEqual((int) ForeignEnum.FOREIGN_FOO, value.Number);
+            Assert.AreEqual(value, enumType.FindValueByNumber(4));
+            Assert.IsNull(enumType.FindValueByName("NO_SUCH_VALUE"));
+            for (int i = 0; i < enumType.Values.Count; i++)
+            {
+                Assert.AreEqual(i, enumType.Values[i].Index);
+            }
+        }
+
+        [TestMethod]
+        public void ServiceDescriptor()
+        {
+            ServiceDescriptor service = TestGenericService.Descriptor;
+
+            Assert.AreEqual("TestGenericService", service.Name);
+            Assert.AreEqual("protobuf_unittest.TestGenericService", service.FullName);
+            Assert.AreEqual(UnitTestGenericServices.Descriptor, service.File);
+
+            Assert.AreEqual(2, service.Methods.Count);
+
+            MethodDescriptor fooMethod = service.Methods[0];
+            Assert.AreEqual("Foo", fooMethod.Name);
+            Assert.AreEqual(FooRequest.Descriptor, fooMethod.InputType);
+            Assert.AreEqual(FooResponse.Descriptor, fooMethod.OutputType);
+            Assert.AreEqual(fooMethod, service.FindMethodByName("Foo"));
+
+            MethodDescriptor barMethod = service.Methods[1];
+            Assert.AreEqual("Bar", barMethod.Name);
+            Assert.AreEqual(BarRequest.Descriptor, barMethod.InputType);
+            Assert.AreEqual(BarResponse.Descriptor, barMethod.OutputType);
+            Assert.AreEqual(barMethod, service.FindMethodByName("Bar"));
+
+            Assert.IsNull(service.FindMethodByName("NoSuchMethod"));
+
+            for (int i = 0; i < service.Methods.Count; i++)
+            {
+                Assert.AreEqual(i, service.Methods[i].Index);
+            }
+        }
+
+        [TestMethod]
+        public void CustomOptions()
+        {
+            MessageDescriptor descriptor = TestMessageWithCustomOptions.Descriptor;
+            Assert.IsTrue(descriptor.Options.HasExtension(UnitTestCustomOptionsProtoFile.MessageOpt1));
+            Assert.AreEqual(-56, descriptor.Options.GetExtension(UnitTestCustomOptionsProtoFile.MessageOpt1));
+
+
+            FieldDescriptor field = descriptor.FindFieldByName("field1");
+            Assert.IsNotNull(field);
+
+            Assert.IsTrue(field.Options.HasExtension(UnitTestCustomOptionsProtoFile.FieldOpt1));
+            Assert.AreEqual(8765432109uL, field.Options.GetExtension(UnitTestCustomOptionsProtoFile.FieldOpt1));
+
+            // TODO: Write out enum descriptors
+            /*
+      EnumDescriptor enumType = TestMessageWithCustomOptions.Types.
+        UnittestCustomOptions.TestMessageWithCustomOptions.AnEnum.getDescriptor();
+
+      Assert.IsTrue(
+        enumType.getOptions().hasExtension(UnittestCustomOptions.enumOpt1));
+      Assert.AreEqual(Integer.valueOf(-789),
+        enumType.getOptions().getExtension(UnittestCustomOptions.enumOpt1));
+        */
+
+            ServiceDescriptor service = TestGenericServiceWithCustomOptions.Descriptor;
+
+            Assert.IsTrue(service.Options.HasExtension(UnitTestCustomOptionsProtoFile.ServiceOpt1));
+            Assert.AreEqual(-9876543210L, service.Options.GetExtension(UnitTestCustomOptionsProtoFile.ServiceOpt1));
+
+            MethodDescriptor method = service.FindMethodByName("Foo");
+            Assert.IsNotNull(method);
+
+            Assert.IsTrue(method.Options.HasExtension(UnitTestCustomOptionsProtoFile.MethodOpt1));
+            Assert.AreEqual(MethodOpt1.METHODOPT1_VAL2,
+                            method.Options.GetExtension(UnitTestCustomOptionsProtoFile.MethodOpt1));
+        }
+    }
+}
+\ No newline at end of file