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using System;
using System.Runtime.InteropServices;
using NUnit.Framework;
using DBus;
using DBus.Protocol;
namespace DBus.Tests
{
[TestFixture]
public class MessageReaderTest
{
[Test]
public void ReadIntLittleEndian ()
{
MessageReader reader = new MessageReader (EndianFlag.Little, new byte[] { 8, 8, 0, 0});
Assert.AreEqual (0x808, reader.ReadInt32 ());
Assert.IsFalse (reader.DataAvailable);
}
[Test]
public void ReadIntBigEndian ()
{
MessageReader reader = new MessageReader (EndianFlag.Big, new byte[] { 0, 0, 8, 8});
Assert.AreEqual (0x808, reader.ReadInt32 ());
Assert.IsFalse (reader.DataAvailable);
}
[Test]
public void ReadIntArrayLittleEndian ()
{
byte[] data = new byte[] { 16, 0, 0, 0, 8, 8, 0, 0, 8, 8, 0, 0, 8, 8, 0, 0, 8, 8, 0, 0 };
MessageReader reader = new MessageReader (EndianFlag.Little, data);
int[] array = (int[])reader.ReadArray (typeof (int));
Assert.IsNotNull (array);
Assert.AreEqual (4, array.Length, "length");
CollectionAssert.AreEqual (new int[] { 0x808, 0x808, 0x808, 0x808}, array, "elements");
Assert.IsFalse (reader.DataAvailable);
}
[Test]
public void ReadIntArrayBigEndian ()
{
byte[] data = new byte[] { 0, 0, 0, 16, 0, 0, 8, 8, 0, 0, 8, 8, 0, 0, 8, 8, 0, 0, 8, 8 };
MessageReader reader = new MessageReader (EndianFlag.Big, data);
int[] array = (int[])reader.ReadArray (typeof (int));
Assert.IsNotNull (array);
Assert.AreEqual (4, array.Length, "length");
CollectionAssert.AreEqual (new int[] { 0x808, 0x808, 0x808, 0x808}, array, "elements");
Assert.IsFalse (reader.DataAvailable);
}
[Test]
public void ReadBooleanArrayLittleEndian ()
{
byte[] data = new byte[] { 4, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0 };
MessageReader reader = new MessageReader (EndianFlag.Little, data);
bool[] array = (bool[])reader.ReadArray (typeof (bool));
Assert.IsNotNull (array);
Assert.AreEqual (4, array.Length, "length");
CollectionAssert.AreEqual (new bool[] { true, false, true, true}, array, "elements");
Assert.IsFalse (reader.DataAvailable);
}
[Test]
public void ReadBooleanArrayBigEndian ()
{
byte[] data = new byte[] { 0, 0, 0, 4, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1 };
MessageReader reader = new MessageReader (EndianFlag.Big, data);
bool[] array = (bool[])reader.ReadArray (typeof (bool));
Assert.IsNotNull (array);
Assert.AreEqual (4, array.Length, "length");
CollectionAssert.AreEqual (new bool[] { true, false, true, true}, array, "elements");
Assert.IsFalse (reader.DataAvailable);
}
[StructLayout (LayoutKind.Sequential)]
struct TestStruct {
public int Item1;
public long Item2;
public int Item3;
}
[Test]
public void ReadIntLongIntStructLittleEndian ()
{
// (ixi) and (1, 2, 3)
byte[] data = new byte[] { 1, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 0, 3, 0, 0, 0 };
MessageReader reader = new MessageReader (EndianFlag.Little, data);
TestStruct stct = (TestStruct)reader.ReadStruct (typeof (TestStruct));
Assert.AreEqual (1, stct.Item1);
Assert.AreEqual (2, stct.Item2);
Assert.AreEqual (3, stct.Item3);
}
[Test, ExpectedException (typeof (MessageReader.PaddingException))]
public void ReadIntLongIntStructNonAlignedLittleEndian ()
{
// (ixi) and (1, 2, 3)
byte[] data = new byte[] { 1, 0, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 0, 3, 0, 0, 0 };
MessageReader reader = new MessageReader (EndianFlag.Little, data);
TestStruct stct = (TestStruct)reader.ReadStruct (typeof (TestStruct));
}
[StructLayout (LayoutKind.Sequential)]
struct TestStruct2 {
public int Item1;
public int Item2;
public int Item3;
}
[Test]
public void ReadIntIntIntStructLittleEndian ()
{
// Will test the fast path
byte[] data = new byte[] { 1, 0, 0, 0, 2, 0, 0, 0, 3, 0, 0, 0 };
MessageReader reader = new MessageReader (EndianFlag.Little, data);
TestStruct2 stct = (TestStruct2)reader.ReadStruct (typeof (TestStruct2));
Assert.AreEqual (1, stct.Item1);
Assert.AreEqual (2, stct.Item2);
Assert.AreEqual (3, stct.Item3);
}
[Test]
public void ReadIntIntIntStructLittleEndianGeneric ()
{
// Will test the fast path
byte[] data = new byte[] { 1, 0, 0, 0, 2, 0, 0, 0, 3, 0, 0, 0 };
MessageReader reader = new MessageReader (EndianFlag.Little, data);
TestStruct2 stct = reader.ReadStruct<TestStruct2> ();
Assert.AreEqual (1, stct.Item1);
Assert.AreEqual (2, stct.Item2);
Assert.AreEqual (3, stct.Item3);
}
[StructLayout (LayoutKind.Sequential)]
struct TestStruct3 {
public long Item1;
public ulong Item2;
public double Item3;
}
[Test]
public void ReadSameAlignementStructNativeEndian ()
{
// Will test the fast path with mixed types but same alignement
byte[] data = new byte[8 * 3];
Array.Copy (BitConverter.GetBytes ((long)1), 0, data, 0, 8);
Array.Copy (BitConverter.GetBytes (ulong.MaxValue), 0, data, 8, 8);
Array.Copy (BitConverter.GetBytes ((double)3.3), 0, data, 16, 8);
MessageReader reader = new MessageReader (BitConverter.IsLittleEndian ? EndianFlag.Little : EndianFlag.Big, data);
TestStruct3 stct = (TestStruct3)reader.ReadStruct (typeof (TestStruct3));
Assert.AreEqual (1, stct.Item1);
Assert.AreEqual (ulong.MaxValue, stct.Item2);
Assert.AreEqual (3.3, stct.Item3);
}
[Test]
public void ReadSameAlignementStructNonNativeEndian ()
{
// Will test the fast path with mixed types but same alignement
byte[] data = new byte[8 * 3];
Array.Copy (BitConverter.GetBytes ((long)1), 0, data, 0, 8);
Array.Copy (BitConverter.GetBytes (ulong.MaxValue), 0, data, 8, 8);
Array.Copy (BitConverter.GetBytes ((double)3.3), 0, data, 16, 8);
// Swap value to simulate other endianess
for (int i = 0; i < data.Length; i += 8) {
for (int j = 0; j < 4; j++) {
data[i + j] = (byte)(data[i + j] ^ data[i + 7 - j]);
data[i + 7 - j] = (byte)(data[i + j] ^ data[i + 7 - j]);
data[i + j] = (byte)(data[i + j] ^ data[i + 7 - j]);
}
}
MessageReader reader = new MessageReader (!BitConverter.IsLittleEndian ? EndianFlag.Little : EndianFlag.Big, data);
TestStruct3 stct = (TestStruct3)reader.ReadStruct (typeof (TestStruct3));
Assert.AreEqual (1, stct.Item1);
Assert.AreEqual (ulong.MaxValue, stct.Item2);
Assert.AreEqual (3.3, stct.Item3);
}
}
}
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