/*
* Copyright 2015 Google Inc. All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
using System;
namespace FlatBuffers.Test
{
[FlatBuffersTestClass]
public class FlatBuffersFuzzTests
{
private readonly Lcg _lcg = new Lcg();
[FlatBuffersTestMethod]
public void TestObjects()
{
CheckObjects(11, 100);
}
[FlatBuffersTestMethod]
public void TestNumbers()
{
var builder = new FlatBufferBuilder(1);
Assert.ArrayEqual(new byte[] { 0 }, builder.DataBuffer.Data);
builder.AddBool(true);
Assert.ArrayEqual(new byte[] { 1 }, builder.DataBuffer.Data);
builder.AddSbyte(-127);
Assert.ArrayEqual(new byte[] { 129, 1 }, builder.DataBuffer.Data);
builder.AddByte(255);
Assert.ArrayEqual(new byte[] { 0, 255, 129, 1 }, builder.DataBuffer.Data); // First pad
builder.AddShort(-32222);
Assert.ArrayEqual(new byte[] { 0, 0, 0x22, 0x82, 0, 255, 129, 1 }, builder.DataBuffer.Data); // Second pad
builder.AddUshort(0xFEEE);
Assert.ArrayEqual(new byte[] { 0xEE, 0xFE, 0x22, 0x82, 0, 255, 129, 1 }, builder.DataBuffer.Data); // no pad
builder.AddInt(-53687092);
Assert.ArrayEqual(new byte[] { 0, 0, 0, 0, 204, 204, 204, 252, 0xEE, 0xFE, 0x22, 0x82, 0, 255, 129, 1 }, builder.DataBuffer.Data); // third pad
builder.AddUint(0x98765432);
Assert.ArrayEqual(new byte[] { 0x32, 0x54, 0x76, 0x98, 204, 204, 204, 252, 0xEE, 0xFE, 0x22, 0x82, 0, 255, 129, 1 }, builder.DataBuffer.Data); // no pad
}
[FlatBuffersTestMethod]
public void TestNumbers64()
{
var builder = new FlatBufferBuilder(1);
builder.AddUlong(0x1122334455667788);
Assert.ArrayEqual(new byte[] { 0x88, 0x77, 0x66, 0x55, 0x44, 0x33, 0x22, 0x11 }, builder.DataBuffer.Data);
builder = new FlatBufferBuilder(1);
builder.AddLong(0x1122334455667788);
Assert.ArrayEqual(new byte[] { 0x88, 0x77, 0x66, 0x55, 0x44, 0x33, 0x22, 0x11 }, builder.DataBuffer.Data);
}
[FlatBuffersTestMethod]
public void TestVector_1xUInt8()
{
var builder = new FlatBufferBuilder(1);
builder.StartVector(sizeof(byte), 1, 1);
Assert.ArrayEqual(new byte[] { 0, 0, 0, 0, 0, 0, 0, 0 }, builder.DataBuffer.Data);
builder.AddByte(1);
Assert.ArrayEqual(new byte[] { 0, 0, 0, 0, 1, 0, 0, 0 }, builder.DataBuffer.Data);
builder.EndVector();
Assert.ArrayEqual(new byte[] { 1, 0, 0, 0, 1, 0, 0, 0 }, builder.DataBuffer.Data);
}
[FlatBuffersTestMethod]
public void TestVector_2xUint8()
{
var builder = new FlatBufferBuilder(1);
builder.StartVector(sizeof(byte), 2, 1);
Assert.ArrayEqual(new byte[] { 0, 0, 0, 0, 0, 0, 0, 0 }, builder.DataBuffer.Data);
builder.AddByte(1);
Assert.ArrayEqual(new byte[] { 0, 0, 0, 0, 0, 1, 0, 0 }, builder.DataBuffer.Data);
builder.AddByte(2);
Assert.ArrayEqual(new byte[] { 0, 0, 0, 0, 2, 1, 0, 0 }, builder.DataBuffer.Data);
builder.EndVector();
Assert.ArrayEqual(new byte[] { 2, 0, 0, 0, 2, 1, 0, 0 }, builder.DataBuffer.Data);
}
[FlatBuffersTestMethod]
public void TestVector_1xUInt16()
{
var builder = new FlatBufferBuilder(1);
builder.StartVector(sizeof(ushort), 1, 1);
Assert.ArrayEqual(new byte[] { 0, 0, 0, 0, 0, 0, 0, 0 }, builder.DataBuffer.Data);
builder.AddUshort(1);
Assert.ArrayEqual(new byte[] { 0, 0, 0, 0, 1, 0, 0, 0 }, builder.DataBuffer.Data);
builder.EndVector();
Assert.ArrayEqual(new byte[] { 1, 0, 0, 0, 1, 0, 0, 0 }, builder.DataBuffer.Data);
}
[FlatBuffersTestMethod]
public void TestVector_2xUInt16()
{
var builder = new FlatBufferBuilder(1);
builder.StartVector(sizeof(ushort), 2, 1);
Assert.ArrayEqual(new byte[] { 0, 0, 0, 0, 0, 0, 0, 0 }, builder.DataBuffer.Data);
builder.AddUshort(0xABCD);
Assert.ArrayEqual(new byte[] { 0, 0, 0, 0, 0, 0, 0xCD, 0xAB }, builder.DataBuffer.Data);
builder.AddUshort(0xDCBA);
Assert.ArrayEqual(new byte[] { 0, 0, 0, 0, 0xBA, 0xDC, 0xCD, 0xAB }, builder.DataBuffer.Data);
builder.EndVector();
Assert.ArrayEqual(new byte[] { 2, 0, 0, 0, 0xBA, 0xDC, 0xCD, 0xAB }, builder.DataBuffer.Data);
}
[FlatBuffersTestMethod]
public void TestCreateAsciiString()
{
var builder = new FlatBufferBuilder(1);
builder.CreateString("foo");
Assert.ArrayEqual(new byte[] { 3, 0, 0, 0, (byte)'f', (byte)'o', (byte)'o', 0 }, builder.DataBuffer.Data);
builder.CreateString("moop");
Assert.ArrayEqual(new byte[]
{
0, 0, 0, 0,
0, 0, 0, 0,
0, 0, 0, 0, // Padding to 32 bytes
4, 0, 0, 0,
(byte)'m', (byte)'o', (byte)'o', (byte)'p',
0, 0, 0, 0, // zero terminator with 3 byte pad
3, 0, 0, 0,
(byte)'f', (byte)'o', (byte)'o', 0
}, builder.DataBuffer.Data);
}
[FlatBuffersTestMethod]
public void TestCreateArbitarytring()
{
var builder = new FlatBufferBuilder(1);
builder.CreateString("\x01\x02\x03");
Assert.ArrayEqual(new byte[]
{
3, 0, 0, 0,
0x01, 0x02, 0x03, 0
}, builder.DataBuffer.Data); // No padding
builder.CreateString("\x04\x05\x06\x07");
Assert.ArrayEqual(new byte[]
{
0, 0, 0, 0,
0, 0, 0, 0,
0, 0, 0, 0, // Padding to 32 bytes
4, 0, 0, 0,
0x04, 0x05, 0x06, 0x07,
0, 0, 0, 0, // zero terminator with 3 byte pad
3, 0, 0, 0,
0x01, 0x02, 0x03, 0
}, builder.DataBuffer.Data); // No padding
}
[FlatBuffersTestMethod]
public void TestEmptyVTable()
{
var builder = new FlatBufferBuilder(1);
builder.StartObject(0);
Assert.ArrayEqual(new byte[] { 0 }, builder.DataBuffer.Data);
builder.EndObject();
Assert.ArrayEqual(new byte[]
{
4, 0, 4, 0,
4, 0, 0, 0
},
builder.DataBuffer.Data);
}
[FlatBuffersTestMethod]
public void TestVTableWithOneBool()
{
var builder = new FlatBufferBuilder(1);
builder.StartObject(1);
Assert.ArrayEqual(new byte[] { 0 }, builder.DataBuffer.Data);
builder.AddBool(0, true, false);
builder.EndObject();
Assert.ArrayEqual(new byte[]
{
0, 0, // padding to 16 bytes
6, 0, // vtable bytes
8, 0, // object length inc vtable offset
7, 0, // start of bool value
6, 0, 0, 0, // int32 offset for start of vtable
0, 0, 0, // padding
1, // value 0
},
builder.DataBuffer.Data);
}
[FlatBuffersTestMethod]
public void TestVTableWithOneBool_DefaultValue()
{
var builder = new FlatBufferBuilder(1);
builder.StartObject(1);
Assert.ArrayEqual(new byte[] { 0 }, builder.DataBuffer.Data);
builder.AddBool(0, false, false);
builder.EndObject();
Assert.ArrayEqual(new byte[]
{
0, 0, 0, 0, 0, 0, // padding to 16 bytes
6, 0, // vtable bytes
4, 0, // end of object from here
0, 0, // entry 0 is empty (default value)
6, 0, 0, 0, // int32 offset for start of vtable
},
builder.DataBuffer.Data);
}
[FlatBuffersTestMethod]
public void TestVTableWithOneInt16()
{
var builder = new FlatBufferBuilder(1);
builder.StartObject(1);
Assert.ArrayEqual(new byte[] { 0 }, builder.DataBuffer.Data);
builder.AddShort(0, 0x789A, 0);
builder.EndObject();
Assert.ArrayEqual(new byte[]
{
0, 0, // padding to 16 bytes
6, 0, // vtable bytes
8, 0, // object length inc vtable offset
6, 0, // start of int16 value
6, 0, 0, 0, // int32 offset for start of vtable
0, 0, // padding
0x9A, 0x78, //value 0
},
builder.DataBuffer.Data);
}
[FlatBuffersTestMethod]
public void TestVTableWithTwoInt16()
{
var builder = new FlatBufferBuilder(1);
builder.StartObject(2);
Assert.ArrayEqual(new byte[] { 0 }, builder.DataBuffer.Data);
builder.AddShort(0, 0x3456, 0);
builder.AddShort(1, 0x789A, 0);
builder.EndObject();
Assert.ArrayEqual(new byte[]
{
8, 0, // vtable bytes
8, 0, // object length inc vtable offset
6, 0, // start of int16 value 0
4, 0, // start of int16 value 1
8, 0, 0, 0, // int32 offset for start of vtable
0x9A, 0x78, // value 1
0x56, 0x34, // value 0
},
builder.DataBuffer.Data);
}
[FlatBuffersTestMethod]
public void TestVTableWithInt16AndBool()
{
var builder = new FlatBufferBuilder(1);
builder.StartObject(2);
Assert.ArrayEqual(new byte[] { 0 }, builder.DataBuffer.Data);
builder.AddShort(0, 0x3456, 0);
builder.AddBool(1, true, false);
builder.EndObject();
Assert.ArrayEqual(new byte[]
{
8, 0, // vtable bytes
8, 0, // object length inc vtable offset
6, 0, // start of int16 value 0
5, 0, // start of bool value 1
8, 0, 0, 0, // int32 offset for start of vtable
0, 1, // padding + value 1
0x56, 0x34, // value 0
},
builder.DataBuffer.Data);
}
[FlatBuffersTestMethod]
public void TestVTableWithEmptyVector()
{
var builder = new FlatBufferBuilder(1);
builder.StartVector(sizeof(byte), 0, 1);
var vecEnd = builder.EndVector();
builder.StartObject(1);
builder.AddOffset(0, vecEnd.Value, 0);
builder.EndObject();
Assert.ArrayEqual(new byte[]
{
0, 0, 0, 0,
0, 0, 0, 0,
0, 0, 0, 0,
0, 0, // Padding to 32 bytes
6, 0, // vtable bytes
8, 0, // object length inc vtable offset
4, 0, // start of vector offset value 0
6, 0, 0, 0, // int32 offset for start of vtable
4, 0, 0, 0,
0, 0, 0, 0,
},
builder.DataBuffer.Data);
}
[FlatBuffersTestMethod]
public void TestVTableWithEmptyVectorAndScalars()
{
var builder = new FlatBufferBuilder(1);
builder.StartVector(sizeof(byte), 0, 1);
var vecEnd = builder.EndVector();
builder.StartObject(2);
builder.AddShort(0, 55, 0);
builder.AddOffset(1, vecEnd.Value, 0);
builder.EndObject();
Assert.ArrayEqual(new byte[]
{
0, 0, 0, 0,
0, 0, 0, 0, // Padding to 32 bytes
8, 0, // vtable bytes
12, 0, // object length inc vtable offset
10, 0, // offset to int16 value 0
4, 0, // start of vector offset value 1
8, 0, 0, 0, // int32 offset for start of vtable
8, 0, 0, 0, // value 1
0, 0, 55, 0, // value 0
0, 0, 0, 0, // length of vector (not in sctruc)
},
builder.DataBuffer.Data);
}
[FlatBuffersTestMethod]
public void TestVTableWith_1xInt16_and_Vector_or_2xInt16()
{
var builder = new FlatBufferBuilder(1);
builder.StartVector(sizeof(short), 2, 1);
builder.AddShort(0x1234);
builder.AddShort(0x5678);
var vecEnd = builder.EndVector();
builder.StartObject(2);
builder.AddOffset(1, vecEnd.Value, 0);
builder.AddShort(0, 55, 0);
builder.EndObject();
Assert.ArrayEqual(new byte[]
{
0, 0, 0, 0, // Padding to 32 bytes
8, 0, // vtable bytes
12, 0, // object length
6, 0, // start of value 0 from end of vtable
8, 0, // start of value 1 from end of buffer
8, 0, 0, 0, // int32 offset for start of vtable
0, 0, 55, 0, // padding + value 0
4, 0, 0, 0, // position of vector from here
2, 0, 0, 0, // length of vector
0x78, 0x56, // vector value 0
0x34, 0x12, // vector value 1
},
builder.DataBuffer.Data);
}
[FlatBuffersTestMethod]
public void TestVTableWithAStruct_of_int8_int16_int32()
{
var builder = new FlatBufferBuilder(1);
builder.StartObject(1);
builder.Prep(4+4+4, 0);
builder.AddSbyte(55);
builder.Pad(3);
builder.AddShort(0x1234);
builder.Pad(2);
builder.AddInt(0x12345678);
var structStart = builder.Offset;
builder.AddStruct(0, structStart, 0);
builder.EndObject();
Assert.ArrayEqual(new byte[]
{
0, 0, 0, 0,
0, 0, 0, 0,
0, 0, // Padding to 32 bytes
6, 0, // vtable bytes
16, 0, // object length
4, 0, // start of struct from here
6, 0, 0, 0, // int32 offset for start of vtable
0x78, 0x56, 0x34, 0x12, // struct value 2
0x00, 0x00, 0x34, 0x12, // struct value 1
0x00, 0x00, 0x00, 55, // struct value 0
},
builder.DataBuffer.Data);
}
[FlatBuffersTestMethod]
public void TestVTableWithAVectorOf_2xStructOf_2xInt8()
{
var builder = new FlatBufferBuilder(1);
builder.StartVector(sizeof(byte)*2, 2, 1);
builder.AddByte(33);
builder.AddByte(44);
builder.AddByte(55);
builder.AddByte(66);
var vecEnd = builder.EndVector();
builder.StartObject(1);
builder.AddOffset(0, vecEnd.Value, 0);
builder.EndObject();
Assert.ArrayEqual(new byte[]
{
0, 0, 0, 0,
0, 0, 0, 0,
0, 0, // Padding to 32 bytes
6, 0, // vtable bytes
8, 0, // object length
4, 0, // offset of vector offset
6, 0, 0, 0, // int32 offset for start of vtable
4, 0, 0, 0, // Vector start offset
2, 0, 0, 0, // Vector len
66, // vector 1, 1
55, // vector 1, 0
44, // vector 0, 1
33, // vector 0, 0
},
builder.DataBuffer.Data);
}
[FlatBuffersTestMethod]
public void TestVTableWithSomeElements()
{
var builder = new FlatBufferBuilder(1);
builder.StartObject(2);
builder.AddByte(0, 33, 0);
builder.AddShort(1, 66, 0);
var off = builder.EndObject();
builder.Finish(off);
Assert.ArrayEqual(new byte[]
{
0, 0, 0, 0,
0, 0, 0, 0,
0, 0, 0, 0, //Padding to 32 bytes
12, 0, 0, 0, // root of table, pointing to vtable offset
8, 0, // vtable bytes
8, 0, // object length
7, 0, // start of value 0
4, 0, // start of value 1
8, 0, 0, 0, // int32 offset for start of vtable
66, 0, // value 1
0, 33, // value 0
},
builder.DataBuffer.Data);
}
[FlatBuffersTestMethod]
public void TestTwoFinishTable()
{
var builder = new FlatBufferBuilder(1);
builder.StartObject(2);
builder.AddByte(0, 33, 0);
builder.AddByte(1, 44, 0);
var off0 = builder.EndObject();
builder.Finish(off0);
builder.StartObject(3);
builder.AddByte(0, 55, 0);
builder.AddByte(1, 66, 0);
builder.AddByte(2, 77, 0);
var off1 = builder.EndObject();
builder.Finish(off1);
Assert.ArrayEqual(new byte[]
{
0, 0, 0, 0,
0, 0, 0, 0,
0, 0, 0, 0,
0, 0, 0, 0,
0, 0, 0, 0, // padding to 64 bytes
16, 0, 0, 0, // root of table, pointing to vtable offset (obj1)
0, 0, // padding
10, 0, // vtable bytes
8, 0, // object length
7, 0, // start of value 0
6, 0, // start of value 1
5, 0, // start of value 2
10, 0, 0, 0, // int32 offset for start of vtable
0, // pad
77, // values 2, 1, 0
66,
55,
12, 0, 0, 0, // root of table, pointing to vtable offset (obj0)
8, 0, // vtable bytes
8, 0, // object length
7, 0, // start of value 0
6, 0, // start of value 1
8, 0, 0, 0, // int32 offset for start of vtable
0, 0, // pad
44, // value 1, 0
33,
},
builder.DataBuffer.Data);
}
[FlatBuffersTestMethod]
public void TestBunchOfBools()
{
var builder = new FlatBufferBuilder(1);
builder.StartObject(8);
for (var i = 0; i < 8; i++)
{
builder.AddBool(i, true, false);
}
var off = builder.EndObject();
builder.Finish(off);
Assert.ArrayEqual(new byte[]
{
0, 0, 0, 0,
0, 0, 0, 0,
0, 0, 0, 0,
0, 0, 0, 0,
0, 0, 0, 0,
0, 0, 0, 0,
0, 0, 0, 0, // padding to 64 bytes
24, 0, 0, 0, // root of table, pointing to vtable offset (obj0)
20, 0, // vtable bytes
12, 0, // object length
11, 0, // start of value 0
10, 0, // start of value 1
9, 0, // start of value 2
8, 0, // start of value 3
7, 0, // start of value 4
6, 0, // start of value 5
5, 0, // start of value 6
4, 0, // start of value 7
20, 0, 0, 0, // int32 offset for start of vtable
1, 1, 1, 1, // values
1, 1, 1, 1,
},
builder.DataBuffer.Data);
}
[FlatBuffersTestMethod]
public void TestWithFloat()
{
var builder = new FlatBufferBuilder(1);
builder.StartObject(1);
builder.AddFloat(0, 1, 0);
builder.EndObject();
Assert.ArrayEqual(new byte[]
{
0, 0,
6, 0, // vtable bytes
8, 0, // object length
4, 0, // start of value 0
6, 0, 0, 0, // int32 offset for start of vtable
0, 0, 128, 63, // value
},
builder.DataBuffer.Data);
}
private void CheckObjects(int fieldCount, int objectCount)
{
_lcg.Reset();
const int testValuesMax = 11;
var builder = new FlatBufferBuilder(1);
var objects = new int[objectCount];
for (var i = 0; i < objectCount; ++i)
{
builder.StartObject(fieldCount);
for (var j = 0; j < fieldCount; ++j)
{
var fieldType = _lcg.Next()%testValuesMax;
switch (fieldType)
{
case 0:
{
builder.AddBool(j, FuzzTestData.BoolValue, false);
break;
}
case 1:
{
builder.AddSbyte(j, FuzzTestData.Int8Value, 0);
break;
}
case 2:
{
builder.AddByte(j, FuzzTestData.UInt8Value, 0);
break;
}
case 3:
{
builder.AddShort(j, FuzzTestData.Int16Value, 0);
break;
}
case 4:
{
builder.AddUshort(j, FuzzTestData.UInt16Value, 0);
break;
}
case 5:
{
builder.AddInt(j, FuzzTestData.Int32Value, 0);
break;
}
case 6:
{
builder.AddUint(j, FuzzTestData.UInt32Value, 0);
break;
}
case 7:
{
builder.AddLong(j, FuzzTestData.Int64Value, 0);
break;
}
case 8:
{
builder.AddUlong(j, FuzzTestData.UInt64Value, 0);
break;
}
case 9:
{
builder.AddFloat(j, FuzzTestData.Float32Value, 0);
break;
}
case 10:
{
builder.AddDouble(j, FuzzTestData.Float64Value, 0);
break;
}
default:
throw new Exception("Unreachable");
}
}
var offset = builder.EndObject();
// Store the object offset
objects[i] = offset;
}
_lcg.Reset();
// Test all objects are readable and return expected values...
for (var i = 0; i < objectCount; ++i)
{
var table = new TestTable(builder.DataBuffer, builder.DataBuffer.Length - objects[i]);
for (var j = 0; j < fieldCount; ++j)
{
var fieldType = _lcg.Next() % testValuesMax;
var fc = 2 + j; // 2 == VtableMetadataFields
var f = fc * 2;
switch (fieldType)
{
case 0:
{
Assert.AreEqual(FuzzTestData.BoolValue, table.GetSlot(f, false));
break;
}
case 1:
{
Assert.AreEqual(FuzzTestData.Int8Value, table.GetSlot(f, (sbyte)0));
break;
}
case 2:
{
Assert.AreEqual(FuzzTestData.UInt8Value, table.GetSlot(f, (byte)0));
break;
}
case 3:
{
Assert.AreEqual(FuzzTestData.Int16Value, table.GetSlot(f, (short)0));
break;
}
case 4:
{
Assert.AreEqual(FuzzTestData.UInt16Value, table.GetSlot(f, (ushort)0));
break;
}
case 5:
{
Assert.AreEqual(FuzzTestData.Int32Value, table.GetSlot(f, (int)0));
break;
}
case 6:
{
Assert.AreEqual(FuzzTestData.UInt32Value, table.GetSlot(f, (uint)0));
break;
}
case 7:
{
Assert.AreEqual(FuzzTestData.Int64Value, table.GetSlot(f, (long)0));
break;
}
case 8:
{
Assert.AreEqual(FuzzTestData.UInt64Value, table.GetSlot(f, (ulong)0));
break;
}
case 9:
{
Assert.AreEqual(FuzzTestData.Float32Value, table.GetSlot(f, (float)0));
break;
}
case 10:
{
Assert.AreEqual(FuzzTestData.Float64Value, table.GetSlot(f, (double)0));
break;
}
default:
throw new Exception("Unreachable");
}
}
}
}
}
}