public void testReadSingleBytes()
{
var u = new UnionInputStream();
Assert.IsTrue(u.isEmpty());
u.add(new MemoryStream(new byte[] { 1, 0, 2 }));
u.add(new MemoryStream(new byte[] { 3 }));
u.add(new MemoryStream(new byte[] { 4, 5 }));
Assert.IsFalse(u.isEmpty());
Assert.AreEqual(3, u.available());
Assert.AreEqual(1, u.read());
Assert.AreEqual(0, u.read());
Assert.AreEqual(2, u.read());
Assert.AreEqual(0, u.available());
Assert.AreEqual(3, u.read());
Assert.AreEqual(0, u.available());
Assert.AreEqual(4, u.read());
Assert.AreEqual(1, u.available());
Assert.AreEqual(5, u.read());
Assert.AreEqual(0, u.available());
Assert.AreEqual(-1, u.read());
Assert.IsTrue(u.isEmpty());
u.add(new MemoryStream(new byte[] { (byte)255 }));
Assert.AreEqual(255, u.read());
Assert.AreEqual(-1, u.read());
Assert.IsTrue(u.isEmpty());
}
public void testEmptyStream()
{
var u = new UnionInputStream();
Assert.IsTrue(u.isEmpty());
Assert.AreEqual(-1, u.read());
Assert.AreEqual(-1, u.Read(new byte[1], 0, 1));
Assert.AreEqual(0, u.available());
Assert.AreEqual(0, u.skip(1));
u.Close();
}
public void testArrayConstructor()
{
var u = new UnionInputStream(
new MemoryStream(new byte[] { 1, 0, 2 }),
new MemoryStream(new byte[] { 3 }),
new MemoryStream(new byte[] { 4, 5 }));
var r = new byte[5];
Assert.AreEqual(5, u.Read(r, 0, 5));
Assert.IsTrue(r.SequenceEqual(new byte[] { 1, 0, 2, 3, 4 }));
Assert.AreEqual(1, u.Read(r, 0, 5));
Assert.AreEqual(5, r[0]);
Assert.AreEqual(-1, u.Read(r, 0, 5));
}
public void testAutoCloseDuringRead()
{
var u = new UnionInputStream();
var closed = new bool[2];
u.add(new MockMemoryStream(new byte[] { 1 }, () => { closed[0] = true; }));
u.add(new MockMemoryStream(new byte[] { 2 }, () => { closed[1] = true; }));
Assert.IsFalse(closed[0]);
Assert.IsFalse(closed[1]);
Assert.AreEqual(1, u.read());
Assert.IsFalse(closed[0]);
Assert.IsFalse(closed[1]);
Assert.AreEqual(2, u.read());
Assert.IsTrue(closed[0]);
Assert.IsFalse(closed[1]);
Assert.AreEqual(-1, u.read());
Assert.IsTrue(closed[0]);
Assert.IsTrue(closed[1]);
}
public void testReadByteBlocks()
{
var u = new UnionInputStream();
u.add(new MemoryStream(new byte[] { 1, 0, 2 }));
u.add(new MemoryStream(new byte[] { 3 }));
u.add(new MemoryStream(new byte[] { 4, 5 }));
var r = new byte[5];
Assert.AreEqual(5, u.Read(r, 0, 5));
Assert.IsTrue(r.SequenceEqual(new byte[] { 1, 0, 2, 3, 4 }));
Assert.AreEqual(1, u.Read(r, 0, 5));
Assert.AreEqual(5, r[0]);
Assert.AreEqual(-1, u.Read(r, 0, 5));
}
public void testExceptionDuringClose()
{
var u = new UnionInputStream();
u.add(new MockMemoryStream(new byte[] { 1 }, () => { throw new IOException("I AM A TEST"); }));
try
{
u.Close();
Assert.Fail("close ignored inner stream exception");
}
catch (IOException e)
{
Assert.AreEqual("I AM A TEST", e.Message);
}
}
public void testCloseDuringClose()
{
var u = new UnionInputStream();
var closed = new bool[2];
u.add(new MockMemoryStream(new byte[] { 1 }, () => { closed[0] = true; }));
u.add(new MockMemoryStream(new byte[] { 2 }, () => { closed[1] = true; }));
Assert.IsFalse(closed[0]);
Assert.IsFalse(closed[1]);
u.Close();
Assert.IsTrue(closed[0]);
Assert.IsTrue(closed[1]);
}
public void testSkip()
{
var u = new UnionInputStream();
u.add(new MemoryStream(new byte[] { 1, 0, 2 }));
u.add(new MemoryStream(new byte[] { 3 }));
u.add(new MemoryStream(new byte[] { 4, 5 }));
Assert.AreEqual(0, u.skip(0));
Assert.AreEqual(4, u.skip(4));
Assert.AreEqual(4, u.read());
Assert.AreEqual(1, u.skip(5));
Assert.AreEqual(0, u.skip(5));
Assert.AreEqual(-1, u.read());
u.add(new MockMemoryStream(new byte[] { 20, 30 }, null)); // can't mock skip behavior :-(
Assert.AreEqual(2, u.skip(8));
Assert.AreEqual(-1, u.read());
}
public void testMarkSupported()
{
var u = new UnionInputStream();
Assert.IsFalse(u.markSupported());
u.add(new MemoryStream(new byte[] { 1, 0, 2 }));
Assert.IsFalse(u.markSupported());
}