Revert https://codereview.chromium.org/1291903002 (protobuf roll).

third_party/protobuf/csharp/src/Google.Protobuf.Test/Reflection/DescriptorsTest.cs

-#region Copyright notice and license
-// Protocol Buffers - Google's data interchange format
-// Copyright 2008 Google Inc.  All rights reserved.
-// https://developers.google.com/protocol-buffers/
-//
-// 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.Linq;
-using Google.Protobuf.TestProtos;
-using NUnit.Framework;
-using UnitTest.Issues.TestProtos;
-
-namespace Google.Protobuf.Reflection
-{
-    /// <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>
-    public class DescriptorsTest
-    {
-        [Test]
-        public void FileDescriptor()
-        {
-            FileDescriptor file = UnittestProto3.Descriptor;
-
-            Assert.AreEqual("google/protobuf/unittest_proto3.proto", file.Name);
-            Assert.AreEqual("protobuf_unittest", file.Package);
-
-            Assert.AreEqual("UnittestProto", file.Proto.Options.JavaOuterClassname);
-            Assert.AreEqual("google/protobuf/unittest_proto3.proto", file.Proto.Name);
-
-            // unittest.proto doesn't have any public imports, but unittest_import.proto does.
-            Assert.AreEqual(0, file.PublicDependencies.Count);
-            Assert.AreEqual(1, UnittestImportProto3.Descriptor.PublicDependencies.Count);
-            Assert.AreEqual(UnittestImportPublicProto3.Descriptor, UnittestImportProto3.Descriptor.PublicDependencies[0]);
-
-            Assert.AreEqual(1, file.Dependencies.Count);
-            Assert.AreEqual(UnittestImportProto3.Descriptor, file.Dependencies[0]);
-
-            MessageDescriptor messageType = TestAllTypes.Descriptor;
-            Assert.AreSame(typeof(TestAllTypes), messageType.GeneratedType);
-            Assert.AreEqual(messageType, file.MessageTypes[0]);
-            Assert.AreEqual(messageType, file.FindTypeByName<MessageDescriptor>("TestAllTypes"));
-            Assert.Null(file.FindTypeByName<MessageDescriptor>("NoSuchType"));
-            Assert.Null(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.Null(file.FindTypeByName<EnumDescriptor>("NoSuchType"));
-            Assert.Null(file.FindTypeByName<EnumDescriptor>("protobuf_unittest.ForeignEnum"));
-            Assert.AreEqual(1, UnittestImportProto3.Descriptor.EnumTypes.Count);
-            Assert.AreEqual("ImportEnum", UnittestImportProto3.Descriptor.EnumTypes[0].Name);
-            for (int i = 0; i < file.EnumTypes.Count; i++)
-            {
-                Assert.AreEqual(i, file.EnumTypes[i].Index);
-            }
-
-            Assert.AreEqual(10, file.SerializedData[0]);
-        }
-
-        [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(UnittestProto3.Descriptor, messageType.File);
-            Assert.IsNull(messageType.ContainingType);
-            Assert.IsNull(messageType.Proto.Options);
-
-            Assert.AreEqual("TestAllTypes", messageType.Name);
-
-            Assert.AreEqual("NestedMessage", nestedType.Name);
-            Assert.AreEqual("protobuf_unittest.TestAllTypes.NestedMessage", nestedType.FullName);
-            Assert.AreEqual(UnittestProto3.Descriptor, nestedType.File);
-            Assert.AreEqual(messageType, nestedType.ContainingType);
-
-            FieldDescriptor field = messageType.Fields.InDeclarationOrder()[0];
-            Assert.AreEqual("single_int32", field.Name);
-            Assert.AreEqual(field, messageType.FindDescriptor<FieldDescriptor>("single_int32"));
-            Assert.Null(messageType.FindDescriptor<FieldDescriptor>("no_such_field"));
-            Assert.AreEqual(field, messageType.FindFieldByNumber(1));
-            Assert.Null(messageType.FindFieldByNumber(571283));
-            var fieldsInDeclarationOrder = messageType.Fields.InDeclarationOrder();
-            for (int i = 0; i < fieldsInDeclarationOrder.Count; i++)
-            {
-                Assert.AreEqual(i, fieldsInDeclarationOrder[i].Index);
-            }
-
-            Assert.AreEqual(nestedType, messageType.NestedTypes[0]);
-            Assert.AreEqual(nestedType, messageType.FindDescriptor<MessageDescriptor>("NestedMessage"));
-            Assert.Null(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.Null(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>("single_int32");
-            FieldDescriptor enumField = messageType.FindDescriptor<FieldDescriptor>("single_nested_enum");
-            FieldDescriptor messageField = messageType.FindDescriptor<FieldDescriptor>("single_foreign_message");
-
-            Assert.AreEqual("single_int32", primitiveField.Name);
-            Assert.AreEqual("protobuf_unittest.TestAllTypes.single_int32",
-                            primitiveField.FullName);
-            Assert.AreEqual(1, primitiveField.FieldNumber);
-            Assert.AreEqual(messageType, primitiveField.ContainingType);
-            Assert.AreEqual(UnittestProto3.Descriptor, primitiveField.File);
-            Assert.AreEqual(FieldType.Int32, primitiveField.FieldType);
-            Assert.IsNull(primitiveField.Proto.Options);
-            
-            Assert.AreEqual("single_nested_enum", enumField.Name);
-            Assert.AreEqual(FieldType.Enum, enumField.FieldType);
-            // Assert.AreEqual(TestAllTypes.Types.NestedEnum.DescriptorProtoFile, enumField.EnumType);
-
-            Assert.AreEqual("single_foreign_message", messageField.Name);
-            Assert.AreEqual(FieldType.Message, messageField.FieldType);
-            Assert.AreEqual(ForeignMessage.Descriptor, messageField.MessageType);
-        }
-
-        [Test]
-        public void FieldDescriptorLabel()
-        {
-            FieldDescriptor singleField =
-                TestAllTypes.Descriptor.FindDescriptor<FieldDescriptor>("single_int32");
-            FieldDescriptor repeatedField =
-                TestAllTypes.Descriptor.FindDescriptor<FieldDescriptor>("repeated_int32");
-
-            Assert.IsFalse(singleField.IsRepeated);
-            Assert.IsTrue(repeatedField.IsRepeated);
-        }
-
-        [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 = UnittestProto3.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(UnittestProto3.Descriptor, enumType.File);
-            Assert.Null(enumType.ContainingType);
-            Assert.Null(enumType.Proto.Options);
-
-            Assert.AreEqual("NestedEnum", nestedType.Name);
-            Assert.AreEqual("protobuf_unittest.TestAllTypes.NestedEnum",
-                            nestedType.FullName);
-            Assert.AreEqual(UnittestProto3.Descriptor, nestedType.File);
-            Assert.AreEqual(TestAllTypes.Descriptor, nestedType.ContainingType);
-
-            EnumValueDescriptor value = enumType.FindValueByName("FOREIGN_FOO");
-            Assert.AreEqual(value, enumType.Values[1]);
-            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.Null(enumType.FindValueByName("NO_SUCH_VALUE"));
-            for (int i = 0; i < enumType.Values.Count; i++)
-            {
-                Assert.AreEqual(i, enumType.Values[i].Index);
-            }
-        }
-
-        [Test]
-        public void OneofDescriptor()
-        {
-            OneofDescriptor descriptor = TestAllTypes.Descriptor.FindDescriptor<OneofDescriptor>("oneof_field");
-            Assert.AreEqual("oneof_field", descriptor.Name);
-            Assert.AreEqual("protobuf_unittest.TestAllTypes.oneof_field", descriptor.FullName);
-
-            var expectedFields = new[] {
-                TestAllTypes.OneofBytesFieldNumber,
-                TestAllTypes.OneofNestedMessageFieldNumber,
-                TestAllTypes.OneofStringFieldNumber,
-                TestAllTypes.OneofUint32FieldNumber }
-                .Select(fieldNumber => TestAllTypes.Descriptor.FindFieldByNumber(fieldNumber))
-                .ToList();
-            foreach (var field in expectedFields)
-            {
-                Assert.AreSame(descriptor, field.ContainingOneof);
-            }
-
-            CollectionAssert.AreEquivalent(expectedFields, descriptor.Fields);
-        }
-
-        [Test]
-        public void ConstructionWithoutGeneratedCodeInfo()
-        {
-            var data = UnittestIssues.Descriptor.Proto.ToByteArray();
-            var newDescriptor = Google.Protobuf.Reflection.FileDescriptor.InternalBuildGeneratedFileFrom(data, new Reflection.FileDescriptor[] { }, null);
-
-            // We should still be able to get at a field...
-            var messageDescriptor = newDescriptor.FindTypeByName<MessageDescriptor>("ItemField");
-            var fieldDescriptor = messageDescriptor.FindFieldByName("item");
-            // But there shouldn't be an accessor (or a generated type for the message)
-            Assert.IsNull(fieldDescriptor.Accessor);
-            Assert.IsNull(messageDescriptor.GeneratedType);
-        }
-
-        // From TestFieldOrdering:
-        // string my_string = 11;
-        // int64 my_int = 1;
-        // float my_float = 101;
-        // NestedMessage single_nested_message = 200;
-        [Test]
-        public void FieldListOrderings()
-        { 
-            var fields = TestFieldOrderings.Descriptor.Fields;
-            Assert.AreEqual(new[] { 11, 1, 101, 200 }, fields.InDeclarationOrder().Select(x => x.FieldNumber));
-            Assert.AreEqual(new[] { 1, 11, 101, 200 }, fields.InFieldNumberOrder().Select(x => x.FieldNumber));
-        }
-    }
-}