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#region Copyright notice and license
// Protocol Buffers - Google's data interchange format
// Copyright 2015 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;
using Google.Protobuf.TestProtos;
using NUnit.Framework;
using System.Collections;
using System.IO;
namespace Google.Protobuf.WellKnownTypes
{
public class WrappersTest
{
[Test]
public void NullIsDefault()
{
var message = new TestWellKnownTypes();
Assert.IsNull(message.StringField);
Assert.IsNull(message.BytesField);
Assert.IsNull(message.BoolField);
Assert.IsNull(message.FloatField);
Assert.IsNull(message.DoubleField);
Assert.IsNull(message.Int32Field);
Assert.IsNull(message.Int64Field);
Assert.IsNull(message.Uint32Field);
Assert.IsNull(message.Uint64Field);
}
[Test]
public void NonDefaultSingleValues()
{
var message = new TestWellKnownTypes
{
StringField = "x",
BytesField = ByteString.CopyFrom(1, 2, 3),
BoolField = true,
FloatField = 12.5f,
DoubleField = 12.25d,
Int32Field = 1,
Int64Field = 2,
Uint32Field = 3,
Uint64Field = 4
};
var bytes = message.ToByteArray();
var parsed = TestWellKnownTypes.Parser.ParseFrom(bytes);
Assert.AreEqual("x", parsed.StringField);
Assert.AreEqual(ByteString.CopyFrom(1, 2, 3), parsed.BytesField);
Assert.AreEqual(true, parsed.BoolField);
Assert.AreEqual(12.5f, parsed.FloatField);
Assert.AreEqual(12.25d, parsed.DoubleField);
Assert.AreEqual(1, parsed.Int32Field);
Assert.AreEqual(2L, parsed.Int64Field);
Assert.AreEqual(3U, parsed.Uint32Field);
Assert.AreEqual(4UL, parsed.Uint64Field);
}
[Test]
public void NonNullDefaultIsPreservedThroughSerialization()
{
var message = new TestWellKnownTypes
{
StringField = "",
BytesField = ByteString.Empty,
BoolField = false,
FloatField = 0f,
DoubleField = 0d,
Int32Field = 0,
Int64Field = 0,
Uint32Field = 0,
Uint64Field = 0
};
var bytes = message.ToByteArray();
var parsed = TestWellKnownTypes.Parser.ParseFrom(bytes);
Assert.AreEqual("", parsed.StringField);
Assert.AreEqual(ByteString.Empty, parsed.BytesField);
Assert.AreEqual(false, parsed.BoolField);
Assert.AreEqual(0f, parsed.FloatField);
Assert.AreEqual(0d, parsed.DoubleField);
Assert.AreEqual(0, parsed.Int32Field);
Assert.AreEqual(0L, parsed.Int64Field);
Assert.AreEqual(0U, parsed.Uint32Field);
Assert.AreEqual(0UL, parsed.Uint64Field);
}
[Test]
public void RepeatedWrappersProhibitNullItems()
{
var message = new RepeatedWellKnownTypes();
Assert.Throws<ArgumentNullException>(() => message.BoolField.Add((bool?) null));
Assert.Throws<ArgumentNullException>(() => message.Int32Field.Add((int?) null));
Assert.Throws<ArgumentNullException>(() => message.StringField.Add((string) null));
Assert.Throws<ArgumentNullException>(() => message.BytesField.Add((ByteString) null));
}
[Test]
public void RepeatedWrappersSerializeDeserialize()
{
var message = new RepeatedWellKnownTypes
{
BoolField = { true, false },
BytesField = { ByteString.CopyFrom(1, 2, 3), ByteString.CopyFrom(4, 5, 6), ByteString.Empty },
DoubleField = { 12.5, -1.5, 0d },
FloatField = { 123.25f, -20f, 0f },
Int32Field = { int.MaxValue, int.MinValue, 0 },
Int64Field = { long.MaxValue, long.MinValue, 0L },
StringField = { "First", "Second", "" },
Uint32Field = { uint.MaxValue, uint.MinValue, 0U },
Uint64Field = { ulong.MaxValue, ulong.MinValue, 0UL },
};
var bytes = message.ToByteArray();
var parsed = RepeatedWellKnownTypes.Parser.ParseFrom(bytes);
Assert.AreEqual(message, parsed);
// Just to test a single value for sanity...
Assert.AreEqual("Second", message.StringField[1]);
}
[Test]
public void RepeatedWrappersBinaryFormat()
{
// At one point we accidentally used a packed format for repeated wrappers, which is wrong (and weird).
// This test is just to prove that we use the right format.
var rawOutput = new MemoryStream();
var output = new CodedOutputStream(rawOutput);
// Write a value of 5
output.WriteTag(RepeatedWellKnownTypes.Int32FieldFieldNumber, WireFormat.WireType.LengthDelimited);
output.WriteLength(2);
output.WriteTag(WrappersReflection.WrapperValueFieldNumber, WireFormat.WireType.Varint);
output.WriteInt32(5);
// Write a value of 0 (empty message)
output.WriteTag(RepeatedWellKnownTypes.Int32FieldFieldNumber, WireFormat.WireType.LengthDelimited);
output.WriteLength(0);
output.Flush();
var expectedBytes = rawOutput.ToArray();
var message = new RepeatedWellKnownTypes { Int32Field = { 5, 0 } };
var actualBytes = message.ToByteArray();
Assert.AreEqual(expectedBytes, actualBytes);
}
[Test]
public void MapWrappersSerializeDeserialize()
{
// Note: no null values here, as they are prohibited in map fields
// (despite being representable).
var message = new MapWellKnownTypes
{
BoolField = { { 10, false }, { 20, true } },
BytesField = {
{ -1, ByteString.CopyFrom(1, 2, 3) },
{ 10, ByteString.CopyFrom(4, 5, 6) },
{ 1000, ByteString.Empty },
},
DoubleField = { { 1, 12.5 }, { 10, -1.5 }, { 20, 0d } },
FloatField = { { 2, 123.25f }, { 3, -20f }, { 4, 0f } },
Int32Field = { { 5, int.MaxValue }, { 6, int.MinValue }, { 7, 0 } },
Int64Field = { { 8, long.MaxValue }, { 9, long.MinValue }, { 10, 0L } },
StringField = { { 11, "First" }, { 12, "Second" }, { 13, "" } },
Uint32Field = { { 15, uint.MaxValue }, { 16, uint.MinValue }, { 17, 0U } },
Uint64Field = { { 18, ulong.MaxValue }, { 19, ulong.MinValue }, { 20, 0UL } },
};
var bytes = message.ToByteArray();
var parsed = MapWellKnownTypes.Parser.ParseFrom(bytes);
Assert.AreEqual(message, parsed);
// Just to test a single value for sanity...
Assert.AreEqual("Second", message.StringField[12]);
}
[Test]
public void Reflection_SingleValues()
{
var message = new TestWellKnownTypes
{
StringField = "x",
BytesField = ByteString.CopyFrom(1, 2, 3),
BoolField = true,
FloatField = 12.5f,
DoubleField = 12.25d,
Int32Field = 1,
Int64Field = 2,
Uint32Field = 3,
Uint64Field = 4
};
var fields = TestWellKnownTypes.Descriptor.Fields;
Assert.AreEqual("x", fields[TestWellKnownTypes.StringFieldFieldNumber].Accessor.GetValue(message));
Assert.AreEqual(ByteString.CopyFrom(1, 2, 3), fields[TestWellKnownTypes.BytesFieldFieldNumber].Accessor.GetValue(message));
Assert.AreEqual(true, fields[TestWellKnownTypes.BoolFieldFieldNumber].Accessor.GetValue(message));
Assert.AreEqual(12.5f, fields[TestWellKnownTypes.FloatFieldFieldNumber].Accessor.GetValue(message));
Assert.AreEqual(12.25d, fields[TestWellKnownTypes.DoubleFieldFieldNumber].Accessor.GetValue(message));
Assert.AreEqual(1, fields[TestWellKnownTypes.Int32FieldFieldNumber].Accessor.GetValue(message));
Assert.AreEqual(2L, fields[TestWellKnownTypes.Int64FieldFieldNumber].Accessor.GetValue(message));
Assert.AreEqual(3U, fields[TestWellKnownTypes.Uint32FieldFieldNumber].Accessor.GetValue(message));
Assert.AreEqual(4UL, fields[TestWellKnownTypes.Uint64FieldFieldNumber].Accessor.GetValue(message));
// And a couple of null fields...
message.StringField = null;
message.FloatField = null;
Assert.IsNull(fields[TestWellKnownTypes.StringFieldFieldNumber].Accessor.GetValue(message));
Assert.IsNull(fields[TestWellKnownTypes.FloatFieldFieldNumber].Accessor.GetValue(message));
}
[Test]
public void Reflection_RepeatedFields()
{
// Just a single example... note that we can't have a null value here
var message = new RepeatedWellKnownTypes { Int32Field = { 1, 2 } };
var fields = RepeatedWellKnownTypes.Descriptor.Fields;
var list = (IList) fields[RepeatedWellKnownTypes.Int32FieldFieldNumber].Accessor.GetValue(message);
CollectionAssert.AreEqual(new[] { 1, 2 }, list);
}
[Test]
public void Reflection_MapFields()
{
// Just a single example... note that we can't have a null value here despite the value type being int?
var message = new MapWellKnownTypes { Int32Field = { { 1, 2 } } };
var fields = MapWellKnownTypes.Descriptor.Fields;
var dictionary = (IDictionary) fields[MapWellKnownTypes.Int32FieldFieldNumber].Accessor.GetValue(message);
Assert.AreEqual(2, dictionary[1]);
}
[Test]
public void Oneof()
{
var message = new OneofWellKnownTypes { EmptyField = new Empty() };
// Start off with a non-wrapper
Assert.AreEqual(OneofWellKnownTypes.OneofFieldOneofCase.EmptyField, message.OneofFieldCase);
AssertOneofRoundTrip(message);
message.StringField = "foo";
Assert.AreEqual(OneofWellKnownTypes.OneofFieldOneofCase.StringField, message.OneofFieldCase);
AssertOneofRoundTrip(message);
message.StringField = "foo";
Assert.AreEqual(OneofWellKnownTypes.OneofFieldOneofCase.StringField, message.OneofFieldCase);
AssertOneofRoundTrip(message);
message.DoubleField = 0.0f;
Assert.AreEqual(OneofWellKnownTypes.OneofFieldOneofCase.DoubleField, message.OneofFieldCase);
AssertOneofRoundTrip(message);
message.DoubleField = 1.0f;
Assert.AreEqual(OneofWellKnownTypes.OneofFieldOneofCase.DoubleField, message.OneofFieldCase);
AssertOneofRoundTrip(message);
message.ClearOneofField();
Assert.AreEqual(OneofWellKnownTypes.OneofFieldOneofCase.None, message.OneofFieldCase);
AssertOneofRoundTrip(message);
}
private void AssertOneofRoundTrip(OneofWellKnownTypes message)
{
// Normal roundtrip, but explicitly checking the case...
var bytes = message.ToByteArray();
var parsed = OneofWellKnownTypes.Parser.ParseFrom(bytes);
Assert.AreEqual(message, parsed);
Assert.AreEqual(message.OneofFieldCase, parsed.OneofFieldCase);
}
[Test]
[TestCase("x", "y", "y")]
[TestCase("x", "", "x")]
[TestCase("x", null, "x")]
[TestCase("", "y", "y")]
[TestCase("", "", "")]
[TestCase("", null, "")]
[TestCase(null, "y", "y")]
[TestCase(null, "", "")]
[TestCase(null, null, null)]
public void Merging(string original, string merged, string expected)
{
var originalMessage = new TestWellKnownTypes { StringField = original };
var mergingMessage = new TestWellKnownTypes { StringField = merged };
originalMessage.MergeFrom(mergingMessage);
Assert.AreEqual(expected, originalMessage.StringField);
// Try it using MergeFrom(CodedInputStream) too...
originalMessage = new TestWellKnownTypes { StringField = original };
originalMessage.MergeFrom(mergingMessage.ToByteArray());
Assert.AreEqual(expected, originalMessage.StringField);
}
// Merging is odd with wrapper types, due to the way that default values aren't emitted in
// the binary stream. In fact we cheat a little bit - a message with an explicitly present default
// value will have that default value ignored. See issue 615. Fixing this would require significant upheaval to
// the FieldCodec side of things.
[Test]
public void MergingStreamExplicitValue()
{
var message = new TestWellKnownTypes { Int32Field = 5 };
// Create a byte array which has the data of an Int32Value explicitly containing a value of 0.
// This wouldn't normally happen.
byte[] bytes;
var wrapperTag = WireFormat.MakeTag(TestWellKnownTypes.Int32FieldFieldNumber, WireFormat.WireType.LengthDelimited);
var valueTag = WireFormat.MakeTag(Int32Value.ValueFieldNumber, WireFormat.WireType.Varint);
using (var stream = new MemoryStream())
{
var coded = new CodedOutputStream(stream);
coded.WriteTag(wrapperTag);
coded.WriteLength(2); // valueTag + a value 0, each one byte
coded.WriteTag(valueTag);
coded.WriteInt32(0);
coded.Flush();
bytes = stream.ToArray();
}
message.MergeFrom(bytes);
// A normal implementation would have 0 now, as the explicit default would have been overwritten the 5.
// With the FieldCodec for Nullable<int>, we can't tell the difference between an implicit 0 and an explicit 0.
Assert.AreEqual(5, message.Int32Field);
}
[Test]
public void MergingStreamNoValue()
{
var message = new TestWellKnownTypes { Int32Field = 5 };
// Create a byte array which an Int32 field, but with no value.
var bytes = new TestWellKnownTypes { Int32Field = 0 }.ToByteArray();
Assert.AreEqual(2, bytes.Length); // The tag for Int32Field is a single byte, then a byte indicating a 0-length message.
message.MergeFrom(bytes);
// The "implicit" 0 did *not* overwrite the value.
// (This is the correct behaviour.)
Assert.AreEqual(5, message.Int32Field);
}
// All permutations of origin/merging value being null, zero (default) or non-default.
// As this is the in-memory version, we don't need to worry about the difference between implicit and explicit 0.
[Test]
[TestCase(null, null, null)]
[TestCase(null, 0, 0)]
[TestCase(null, 5, 5)]
[TestCase(0, null, 0)]
[TestCase(0, 0, 0)]
[TestCase(0, 5, 5)]
[TestCase(5, null, 5)]
[TestCase(5, 0, 5)]
[TestCase(5, 10, 10)]
public void MergingMessageWithZero(int? originValue, int? mergingValue, int? expectedResult)
{
// This differs from the MergingStreamCornerCase because when we merge message *objects*,
// we ignore default values from the "source".
var message1 = new TestWellKnownTypes { Int32Field = originValue };
var message2 = new TestWellKnownTypes { Int32Field = mergingValue };
message1.MergeFrom(message2);
Assert.AreEqual(expectedResult, message1.Int32Field);
}
[Test]
public void UnknownFieldInWrapper()
{
var stream = new MemoryStream();
var output = new CodedOutputStream(stream);
var wrapperTag = WireFormat.MakeTag(TestWellKnownTypes.Int32FieldFieldNumber, WireFormat.WireType.LengthDelimited);
var unknownTag = WireFormat.MakeTag(15, WireFormat.WireType.Varint);
var valueTag = WireFormat.MakeTag(Int32Value.ValueFieldNumber, WireFormat.WireType.Varint);
output.WriteTag(wrapperTag);
output.WriteLength(4); // unknownTag + value 5 + valueType + value 6, each 1 byte
output.WriteTag(unknownTag);
output.WriteInt32((int) valueTag); // Sneakily "pretend" it's a tag when it's really a value
output.WriteTag(valueTag);
output.WriteInt32(6);
output.Flush();
stream.Position = 0;
var message = TestWellKnownTypes.Parser.ParseFrom(stream);
Assert.AreEqual(6, message.Int32Field);
}
[Test]
public void ClearWithReflection()
{
// String and Bytes are the tricky ones here, as the CLR type of the property
// is the same between the wrapper and non-wrapper types.
var message = new TestWellKnownTypes { StringField = "foo" };
TestWellKnownTypes.Descriptor.Fields[TestWellKnownTypes.StringFieldFieldNumber].Accessor.Clear(message);
Assert.IsNull(message.StringField);
}
}
}