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/*
* Copyright 2014 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 ByteBufferTests
{
[FlatBuffersTestMethod]
public void ByteBuffer_Length_MatchesBufferLength()
{
var buffer = new byte[1000];
var uut = new ByteBuffer(buffer);
Assert.AreEqual(buffer.Length, uut.Length);
}
[FlatBuffersTestMethod]
public void ByteBuffer_PutBytePopulatesBufferAtZeroOffset()
{
var buffer = new byte[1];
var uut = new ByteBuffer(buffer);
uut.PutByte(0, (byte)99);
Assert.AreEqual((byte)99, buffer[0]);
}
#if !BYTEBUFFER_NO_BOUNDS_CHECK
[FlatBuffersTestMethod]
public void ByteBuffer_PutByteCannotPutAtOffsetPastLength()
{
var uut = new ByteBuffer(1);
Assert.Throws<ArgumentOutOfRangeException>(() => uut.PutByte(1, 99));
}
#endif
[FlatBuffersTestMethod]
public void ByteBuffer_PutShortPopulatesBufferCorrectly()
{
var buffer = new byte[2];
var uut = new ByteBuffer(buffer);
uut.PutShort(0, (short)1);
// Ensure Endianness was written correctly
Assert.AreEqual((byte)1, buffer[0]);
Assert.AreEqual((byte)0, buffer[1]);
}
#if !BYTEBUFFER_NO_BOUNDS_CHECK
[FlatBuffersTestMethod]
public void ByteBuffer_PutShortCannotPutAtOffsetPastLength()
{
var uut = new ByteBuffer(2);
Assert.Throws<ArgumentOutOfRangeException>(() => uut.PutShort(2, 99));
}
#endif
#if !BYTEBUFFER_NO_BOUNDS_CHECK
[FlatBuffersTestMethod]
public void ByteBuffer_PutShortChecksLength()
{
var uut = new ByteBuffer(1);
Assert.Throws<ArgumentOutOfRangeException>(() => uut.PutShort(0, 99));
}
[FlatBuffersTestMethod]
public void ByteBuffer_PutShortChecksLengthAndOffset()
{
var uut = new ByteBuffer(2);
Assert.Throws<ArgumentOutOfRangeException>(() => uut.PutShort(1, 99));
}
#endif
[FlatBuffersTestMethod]
public void ByteBuffer_PutIntPopulatesBufferCorrectly()
{
var buffer = new byte[4];
var uut = new ByteBuffer(buffer);
uut.PutInt(0, 0x0A0B0C0D);
// Ensure Endianness was written correctly
Assert.AreEqual(0x0D, buffer[0]);
Assert.AreEqual(0x0C, buffer[1]);
Assert.AreEqual(0x0B, buffer[2]);
Assert.AreEqual(0x0A, buffer[3]);
}
#if !BYTEBUFFER_NO_BOUNDS_CHECK
[FlatBuffersTestMethod]
public void ByteBuffer_PutIntCannotPutAtOffsetPastLength()
{
var uut = new ByteBuffer(4);
Assert.Throws<ArgumentOutOfRangeException>(() => uut.PutInt(2, 0x0A0B0C0D));
}
[FlatBuffersTestMethod]
public void ByteBuffer_PutIntChecksLength()
{
var uut = new ByteBuffer(1);
Assert.Throws<ArgumentOutOfRangeException>(() => uut.PutInt(0, 0x0A0B0C0D));
}
[FlatBuffersTestMethod]
public void ByteBuffer_PutIntChecksLengthAndOffset()
{
var uut = new ByteBuffer(4);
Assert.Throws<ArgumentOutOfRangeException>(() => uut.PutInt(2, 0x0A0B0C0D));
}
#endif
[FlatBuffersTestMethod]
public void ByteBuffer_PutLongPopulatesBufferCorrectly()
{
var buffer = new byte[8];
var uut = new ByteBuffer(buffer);
uut.PutLong(0, 0x010203040A0B0C0D);
// Ensure Endianness was written correctly
Assert.AreEqual(0x0D, buffer[0]);
Assert.AreEqual(0x0C, buffer[1]);
Assert.AreEqual(0x0B, buffer[2]);
Assert.AreEqual(0x0A, buffer[3]);
Assert.AreEqual(0x04, buffer[4]);
Assert.AreEqual(0x03, buffer[5]);
Assert.AreEqual(0x02, buffer[6]);
Assert.AreEqual(0x01, buffer[7]);
}
#if !BYTEBUFFER_NO_BOUNDS_CHECK
[FlatBuffersTestMethod]
public void ByteBuffer_PutLongCannotPutAtOffsetPastLength()
{
var uut = new ByteBuffer(8);
Assert.Throws<ArgumentOutOfRangeException>(() => uut.PutLong(2, 0x010203040A0B0C0D));
}
[FlatBuffersTestMethod]
public void ByteBuffer_PutLongChecksLength()
{
var uut = new ByteBuffer(1);
Assert.Throws<ArgumentOutOfRangeException>(() => uut.PutLong(0, 0x010203040A0B0C0D));
}
[FlatBuffersTestMethod]
public void ByteBuffer_PutLongChecksLengthAndOffset()
{
var uut = new ByteBuffer(8);
Assert.Throws<ArgumentOutOfRangeException>(() => uut.PutLong(2, 0x010203040A0B0C0D));
}
#endif
[FlatBuffersTestMethod]
public void ByteBuffer_GetByteReturnsCorrectData()
{
var buffer = new byte[1];
buffer[0] = 99;
var uut = new ByteBuffer(buffer);
Assert.AreEqual((byte)99, uut.Get(0));
}
#if !BYTEBUFFER_NO_BOUNDS_CHECK
[FlatBuffersTestMethod]
public void ByteBuffer_GetByteChecksOffset()
{
var uut = new ByteBuffer(1);
Assert.Throws<ArgumentOutOfRangeException>(() => uut.Get(1));
}
#endif
[FlatBuffersTestMethod]
public void ByteBuffer_GetShortReturnsCorrectData()
{
var buffer = new byte[2];
buffer[0] = 1;
buffer[1] = 0;
var uut = new ByteBuffer(buffer);
Assert.AreEqual(1, uut.GetShort(0));
}
#if !BYTEBUFFER_NO_BOUNDS_CHECK
[FlatBuffersTestMethod]
public void ByteBuffer_GetShortChecksOffset()
{
var uut = new ByteBuffer(2);
Assert.Throws<ArgumentOutOfRangeException>(() => uut.GetShort(2));
}
[FlatBuffersTestMethod]
public void ByteBuffer_GetShortChecksLength()
{
var uut = new ByteBuffer(2);
Assert.Throws<ArgumentOutOfRangeException>(() => uut.GetShort(1));
}
#endif
[FlatBuffersTestMethod]
public void ByteBuffer_GetIntReturnsCorrectData()
{
var buffer = new byte[4];
buffer[0] = 0x0D;
buffer[1] = 0x0C;
buffer[2] = 0x0B;
buffer[3] = 0x0A;
var uut = new ByteBuffer(buffer);
Assert.AreEqual(0x0A0B0C0D, uut.GetInt(0));
}
#if !BYTEBUFFER_NO_BOUNDS_CHECK
[FlatBuffersTestMethod]
public void ByteBuffer_GetIntChecksOffset()
{
var uut = new ByteBuffer(4);
Assert.Throws<ArgumentOutOfRangeException>(() => uut.GetInt(4));
}
[FlatBuffersTestMethod]
public void ByteBuffer_GetIntChecksLength()
{
var uut = new ByteBuffer(2);
Assert.Throws<ArgumentOutOfRangeException>(() => uut.GetInt(0));
}
#endif
[FlatBuffersTestMethod]
public void ByteBuffer_GetLongReturnsCorrectData()
{
var buffer = new byte[8];
buffer[0] = 0x0D;
buffer[1] = 0x0C;
buffer[2] = 0x0B;
buffer[3] = 0x0A;
buffer[4] = 0x04;
buffer[5] = 0x03;
buffer[6] = 0x02;
buffer[7] = 0x01;
var uut = new ByteBuffer(buffer);
Assert.AreEqual(0x010203040A0B0C0D, uut.GetLong(0));
}
#if !BYTEBUFFER_NO_BOUNDS_CHECK
[FlatBuffersTestMethod]
public void ByteBuffer_GetLongChecksOffset()
{
var uut = new ByteBuffer(8);
Assert.Throws<ArgumentOutOfRangeException>(() => uut.GetLong(8));
}
[FlatBuffersTestMethod]
public void ByteBuffer_GetLongChecksLength()
{
var uut = new ByteBuffer(7);
Assert.Throws<ArgumentOutOfRangeException>(() => uut.GetLong(0));
}
#endif
[FlatBuffersTestMethod]
public void ByteBuffer_ReverseBytesUshort()
{
const ushort original = (ushort)0x1234U;
var reverse = ByteBuffer.ReverseBytes(original);
Assert.AreEqual(0x3412U, reverse);
var rereverse = ByteBuffer.ReverseBytes(reverse);
Assert.AreEqual(original, rereverse);
}
[FlatBuffersTestMethod]
public void ByteBuffer_ReverseBytesUint()
{
const uint original = 0x12345678;
var reverse = ByteBuffer.ReverseBytes(original);
Assert.AreEqual(0x78563412U, reverse);
var rereverse = ByteBuffer.ReverseBytes(reverse);
Assert.AreEqual(original, rereverse);
}
[FlatBuffersTestMethod]
public void ByteBuffer_ReverseBytesUlong()
{
const ulong original = 0x1234567890ABCDEFUL;
var reverse = ByteBuffer.ReverseBytes(original);
Assert.AreEqual(0xEFCDAB9078563412UL, reverse);
var rereverse = ByteBuffer.ReverseBytes(reverse);
Assert.AreEqual(original, rereverse);
}
[FlatBuffersTestMethod]
public void ByteBuffer_ToFullArray_MatchesBuffer()
{
var buffer = new byte[4];
buffer[0] = 0x0D;
buffer[1] = 0x0C;
buffer[2] = 0x0B;
buffer[3] = 0x0A;
var uut = new ByteBuffer(buffer);
Assert.ArrayEqual(buffer, uut.ToFullArray());
}
[FlatBuffersTestMethod]
public void ByteBuffer_ToSizedArray_MatchesBuffer()
{
var buffer = new byte[4];
buffer[0] = 0x0D;
buffer[1] = 0x0C;
buffer[2] = 0x0B;
buffer[3] = 0x0A;
var uut = new ByteBuffer(buffer);
Assert.ArrayEqual(buffer, uut.ToFullArray());
}
[FlatBuffersTestMethod]
public void ByteBuffer_Duplicate_MatchesBuffer()
{
var buffer = new byte[4];
buffer[0] = 0x0D;
buffer[1] = 0x0C;
buffer[2] = 0x0B;
buffer[3] = 0x0A;
var uut = new ByteBuffer(buffer);
Assert.AreEqual(0x0A0B0C0D, uut.GetInt(0));
// Advance by two bytes
uut.Position = 2; uut = uut.Duplicate();
Assert.AreEqual(0x0A0B, uut.GetShort(2));
// Advance by one more byte
uut.Position = 1; uut = uut.Duplicate();
Assert.AreEqual(0x0A, uut.Get(3));
}
[FlatBuffersTestMethod]
public void ByteBuffer_To_Array_Float()
{
const int len = 9;
// Construct the data array
var fData = new float[len];
fData[0] = 1.0079F;
fData[1] = 4.0026F;
fData[2] = 6.941F;
fData[3] = 9.0122F;
fData[4] = 10.811F;
fData[5] = 12.0107F;
fData[6] = 14.0067F;
fData[7] = 15.9994F;
fData[8] = 18.9984F;
// Tranfer it to a byte array
var buffer = new byte[sizeof(float) * fData.Length];
Buffer.BlockCopy(fData, 0, buffer, 0, buffer.Length);
// Create the Byte Buffer from byte array
var uut = new ByteBuffer(buffer);
// Get the full array back out and ensure they are equivalent
var bbArray = uut.ToArray<float>(0, len);
Assert.ArrayEqual(fData, bbArray);
// Get a portion of the full array back out and ensure the
// subrange agrees
var bbArray2 = uut.ToArray<float>(4, len - 1);
Assert.AreEqual(bbArray2.Length, len - 1);
for (int i = 1; i < len - 1; i++)
{
Assert.AreEqual(fData[i], bbArray2[i - 1]);
}
// Get a sub portion of the full array back out and ensure the
// subrange agrees
var bbArray3 = uut.ToArray<float>(8, len - 4);
Assert.AreEqual(bbArray3.Length, len - 4);
for (int i = 2; i < len - 4; i++)
{
Assert.AreEqual(fData[i], bbArray3[i - 2]);
}
}
public void ByteBuffer_Put_Array_Helper<T>(T[] data, int typeSize)
where T : struct
{
// Create the Byte Buffer
var uut = new ByteBuffer(1024);
// Put the data into the buffer and make sure the offset is
// calculated correctly
int nOffset = uut.Put(1024, data);
Assert.AreEqual(1024 - typeSize * data.Length, nOffset);
// Get the full array back out and ensure they are equivalent
var bbArray = uut.ToArray<T>(nOffset, data.Length);
Assert.ArrayEqual(data, bbArray);
}
[FlatBuffersTestMethod]
public void ByteBuffer_Put_Array_Float()
{
const int len = 9;
// Construct the data array
var data = new float[len];
data[0] = 1.0079F;
data[1] = 4.0026F;
data[2] = 6.941F;
data[3] = 9.0122F;
data[4] = 10.811F;
data[5] = 12.0107F;
data[6] = 14.0067F;
data[7] = 15.9994F;
data[8] = 18.9984F;
ByteBuffer_Put_Array_Helper(data, sizeof(float));
}
[FlatBuffersTestMethod]
public void ByteBuffer_Put_Array_Double()
{
const int len = 9;
// Construct the data array
var data = new double[len];
data[0] = 1.0079;
data[1] = 4.0026;
data[2] = 6.941;
data[3] = 9.0122;
data[4] = 10.811;
data[5] = 12.0107;
data[6] = 14.0067;
data[7] = 15.9994;
data[8] = 18.9984;
ByteBuffer_Put_Array_Helper(data, sizeof(double));
}
[FlatBuffersTestMethod]
public void ByteBuffer_Put_Array_Int()
{
const int len = 9;
// Construct the data array
var data = new int[len];
data[0] = 1;
data[1] = 4;
data[2] = 6;
data[3] = 9;
data[4] = 10;
data[5] = 12;
data[6] = 14;
data[7] = 15;
data[8] = 18;
ByteBuffer_Put_Array_Helper(data, sizeof(int));
}
[FlatBuffersTestMethod]
public void ByteBuffer_Put_Array_UInt()
{
const int len = 9;
// Construct the data array
var data = new uint[len];
data[0] = 1;
data[1] = 4;
data[2] = 6;
data[3] = 9;
data[4] = 10;
data[5] = 12;
data[6] = 14;
data[7] = 15;
data[8] = 18;
ByteBuffer_Put_Array_Helper(data, sizeof(uint));
}
[FlatBuffersTestMethod]
public void ByteBuffer_Put_Array_Bool()
{
const int len = 9;
// Construct the data array
var data = new bool[len];
data[0] = true;
data[1] = true;
data[2] = false;
data[3] = true;
data[4] = false;
data[5] = true;
data[6] = true;
data[7] = true;
data[8] = false;
ByteBuffer_Put_Array_Helper(data, sizeof(bool));
}
[FlatBuffersTestMethod]
public void ByteBuffer_Put_Array_Long()
{
const int len = 9;
// Construct the data array
var data = new long[len];
data[0] = 1;
data[1] = 4;
data[2] = 6;
data[3] = 9;
data[4] = 10;
data[5] = 12;
data[6] = 14;
data[7] = 15;
data[8] = 18;
ByteBuffer_Put_Array_Helper(data, sizeof(long));
}
[FlatBuffersTestMethod]
public void ByteBuffer_Put_Array_Byte()
{
const int len = 9;
// Construct the data array
var data = new byte[len];
data[0] = 1;
data[1] = 4;
data[2] = 6;
data[3] = 9;
data[4] = 10;
data[5] = 12;
data[6] = 14;
data[7] = 15;
data[8] = 18;
ByteBuffer_Put_Array_Helper(data, sizeof(byte));
}
[FlatBuffersTestMethod]
public void ByteBuffer_Put_Array_SByte()
{
const int len = 9;
// Construct the data array
var data = new sbyte[len];
data[0] = 1;
data[1] = 4;
data[2] = 6;
data[3] = 9;
data[4] = 10;
data[5] = 12;
data[6] = 14;
data[7] = 15;
data[8] = 18;
ByteBuffer_Put_Array_Helper(data, sizeof(sbyte));
}
[FlatBuffersTestMethod]
public void ByteBuffer_Put_Array_Null_Throws()
{
// Create the Byte Buffer
var uut = new ByteBuffer(1024);
// create a null array and try to put it into the buffer
float[] data = null;
Assert.Throws<ArgumentNullException>(() => uut.Put(1024, data));
}
[FlatBuffersTestMethod]
public void ByteBuffer_Put_Array_Empty_Throws()
{
// Create the Byte Buffer
var uut = new ByteBuffer(1024);
// create an array of length == 0, and try to put it into the buffer
float[] data = new float[0];
Assert.Throws<ArgumentException>(() => uut.Put(1024, data));
}
private struct dummyStruct
{
int a;
float b;
}
[FlatBuffersTestMethod]
public void ByteBuffer_Put_Array_IncorrectType_Throws()
{
// Create the Byte Buffer
var uut = new ByteBuffer(1024);
// Create an array of dummy structures that shouldn't be
// able to be put into the buffer
var data = new dummyStruct[10];
Assert.Throws<ArgumentException>(() => uut.Put(1024, data));
}
}
}