public static void TestStreamSeek()
{
DebugStream stm = StmInit("01234");
Assert.AreEqual(5, stm.Seek(0, SeekOrigin.Current));
Assert.AreEqual(5, stm.Seek(0, SeekOrigin.End));
byte[] rgb = new byte[1];
Assert.AreEqual(0, stm.Read(rgb, 0, 1));
Assert.AreEqual(0, stm.Seek(0, SeekOrigin.Begin));
Assert.AreEqual(1, stm.Read(rgb, 0, 1));
Assert.AreEqual(1, stm.Seek(0, SeekOrigin.Current));
Assert.AreEqual(Encoding.UTF8.GetBytes("0"), rgb);
Assert.AreEqual(4, stm.Seek(-1, SeekOrigin.End));
Assert.AreEqual(1, stm.Read(rgb, 0, 1));
Assert.AreEqual(5, stm.Seek(0, SeekOrigin.Current));
Assert.AreEqual(Encoding.UTF8.GetBytes("4"), rgb);
Assert.AreEqual(3, stm.Seek(-2, SeekOrigin.Current));
Assert.AreEqual(1, stm.Read(rgb, 0, 1));
Assert.AreEqual(4, stm.Seek(0, SeekOrigin.Current));
Assert.AreEqual(Encoding.UTF8.GetBytes("3"), rgb);
}
public static void TestStreamWriteBasicWrite()
{
DebugStream stm = StmInit("test");
Assert.AreEqual(4, stm.Length);
Assert.AreEqual(4, stm.Position);
Assert.AreEqual(4, stm.Seek(0, SeekOrigin.End));
}
public static void TestStreamReadBasicRead()
{
DebugStream stm = StmInit("test");
stm.Seek(0, SeekOrigin.Begin);
byte[] rgb = new byte[4];
Assert.AreEqual(4, stm.Read(rgb, 0, 4));
Assert.AreEqual(Encoding.UTF8.GetBytes("test"), rgb);
}
public static void TestStmCreateFromString(string sIn, byte[] rgbExpected)
{
DebugStream stm = StmCreateFromString(sIn);
stm.Seek(0, SeekOrigin.Begin);
Assert.AreEqual(rgbExpected.Length, stm.Length);
byte[] rgbRead = new byte[rgbExpected.Length];
stm.Read(rgbRead, 0, rgbExpected.Length);
Assert.AreEqual(rgbExpected, rgbRead);
}
public static void TestStreamWrite_SeekBack_WriteNoGrowFile()
{
DebugStream stm = StmInit("0123456789");
stm.Seek(-4, SeekOrigin.Current);
byte[] rgbWrite = new byte[2] {
65, 66
};
stm.Write(rgbWrite, 0, 2);
Assert.AreEqual(8, stm.Position);
Assert.AreEqual(10, stm.Length);
stm.Position = 0;
byte[] rgbExpected = Encoding.UTF8.GetBytes("012345AB89");
byte[] rgbRead = new byte[10];
Assert.AreEqual(10, stm.Read(rgbRead, 0, 10));
Assert.AreEqual(rgbExpected, rgbRead);
}
public static void TestStreamWrite_SeekBack_WriteGrowFile() // check that length and position are correct
{
DebugStream stm = StmInit("0123456789");
stm.Seek(-2, SeekOrigin.Current);
byte[] rgbWrite = new byte[3] {
65, 66, 67
};
stm.Write(rgbWrite, 0, 3);
Assert.AreEqual(11, stm.Position);
Assert.AreEqual(11, stm.Length);
stm.Position = 0;
byte[] rgbExpected = Encoding.UTF8.GetBytes("01234567ABC");
byte[] rgbRead = new byte[11];
Assert.AreEqual(11, stm.Read(rgbRead, 0, 11));
Assert.AreEqual(rgbExpected, rgbRead);
}
