src/ProtocolBuffers.Test/DescriptorsTest.cs - platform/external/protobuf-javalite - Gitiles

 #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 NUnit.Framework;

 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>
   [TestFixture]
   public class DescriptorsTest {

     [Test]
     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);
       }
     }

     [Test]
     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);
       }
     }

     [Test]
     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);
     }

     [Test]
     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);
     }

     [Test]
     public void FieldDescriptorDefault() {
       MessageDescriptor d = TestAllTypes.Descriptor;
       Assert.IsFalse(d.FindDescriptor<FieldDescriptor>("optional_int32").HasDefaultValue);
       Assert.AreEqual(0, d.FindDescriptor<FieldDescriptor>("optional_int32").DefaultValue);
       Assert.IsTrue(d.FindDescriptor<FieldDescriptor>("default_int32").HasDefaultValue);
       Assert.AreEqual(41, d.FindDescriptor<FieldDescriptor>("default_int32").DefaultValue);

       d = TestExtremeDefaultValues.Descriptor;
       Assert.AreEqual(ByteString.CopyFrom("\u0000\u0001\u0007\b\f\n\r\t\u000b\\\'\"\u00fe", Encoding.GetEncoding(28591)),
         d.FindDescriptor<FieldDescriptor>("escaped_bytes").DefaultValue);
       Assert.AreEqual(uint.MaxValue, d.FindDescriptor<FieldDescriptor>("large_uint32").DefaultValue);
       Assert.AreEqual(ulong.MaxValue, d.FindDescriptor<FieldDescriptor>("large_uint64").DefaultValue);
     }

     [Test]
     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);
       }
     }

     [Test]
     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);
       }
     }

     [Test]
     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(8765432109L, 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));
     }
   }
 }
	#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 NUnit.Framework;

	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>
	[TestFixture]
	public class DescriptorsTest {

	[Test]
	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);
	}
	}

	[Test]
	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);
	}
	}

	[Test]
	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);
	}

	[Test]
	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);
	}

	[Test]
	public void FieldDescriptorDefault() {
	MessageDescriptor d = TestAllTypes.Descriptor;
	Assert.IsFalse(d.FindDescriptor<FieldDescriptor>("optional_int32").HasDefaultValue);
	Assert.AreEqual(0, d.FindDescriptor<FieldDescriptor>("optional_int32").DefaultValue);
	Assert.IsTrue(d.FindDescriptor<FieldDescriptor>("default_int32").HasDefaultValue);
	Assert.AreEqual(41, d.FindDescriptor<FieldDescriptor>("default_int32").DefaultValue);

	d = TestExtremeDefaultValues.Descriptor;
	Assert.AreEqual(ByteString.CopyFrom("\u0000\u0001\u0007\b\f\n\r\t\u000b\\\'\"\u00fe", Encoding.GetEncoding(28591)),
	d.FindDescriptor<FieldDescriptor>("escaped_bytes").DefaultValue);
	Assert.AreEqual(uint.MaxValue, d.FindDescriptor<FieldDescriptor>("large_uint32").DefaultValue);
	Assert.AreEqual(ulong.MaxValue, d.FindDescriptor<FieldDescriptor>("large_uint64").DefaultValue);
	}

	[Test]
	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);
	}
	}

	[Test]
	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);
	}
	}

	[Test]
	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(8765432109L, 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));
	}
	}
	}