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Unit tests for ConnectionWriterImpl.

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This commit is contained in:
akwizgran
2012-09-06 16:38:24 +01:00
parent 164166481e
commit 67eb9d6f93
4 changed files with 119 additions and 8 deletions
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4
components/net/sf/briar/transport/ConnectionWriterImpl.java
View File

@@ -2,7 +2,6 @@ package net.sf.briar.transport;
import static net.sf.briar.api.transport.TransportConstants.HEADER_LENGTH;
import static net.sf.briar.api.transport.TransportConstants.MAC_LENGTH;
import static net.sf.briar.util.ByteUtils.MAX_32_BIT_UNSIGNED;
import java.io.IOException;
import java.io.OutputStream;
@@ -22,7 +21,6 @@ class ConnectionWriterImpl extends OutputStream implements ConnectionWriter {
private final int frameLength;
private int length = 0;
private long frameNumber = 0L;
ConnectionWriterImpl(FrameWriter out, int frameLength) {
this.out = out;
@@ -80,9 +78,7 @@ class ConnectionWriterImpl extends OutputStream implements ConnectionWriter {
}
private void writeFrame(boolean finalFrame) throws IOException {
if(frameNumber > MAX_32_BIT_UNSIGNED) throw new IllegalStateException();
out.writeFrame(frame, length, finalFrame);
length = 0;
frameNumber++;
}
}

1
components/net/sf/briar/transport/OutgoingEncryptionLayer.java
View File

@@ -69,6 +69,7 @@ class OutgoingEncryptionLayer implements FrameWriter {
public void writeFrame(byte[] frame, int payloadLength, boolean finalFrame)
throws IOException {
if(frameNumber > MAX_32_BIT_UNSIGNED) throw new IllegalStateException();
// If the initiator's side of the connection is closed without writing
// any data, don't write anything to the underlying transport
if(writeTag && finalFrame && payloadLength == 0) return;

4
test/net/sf/briar/transport/ConnectionReaderImplTest.java
View File

@@ -33,6 +33,7 @@ public class ConnectionReaderImplTest extends BriarTestCase {
assertEquals(0, c.read()); // Read another byte
assertEquals(-1, c.read()); // Skip the second empty frame, reach EOF
assertEquals(-1, c.read()); // Still at EOF
context.assertIsSatisfied();
}
@Test
@@ -57,6 +58,7 @@ public class ConnectionReaderImplTest extends BriarTestCase {
assertEquals(-1, c.read(buf));
// Still at EOF
assertEquals(-1, c.read(buf));
context.assertIsSatisfied();
}
@Test
@@ -77,6 +79,7 @@ public class ConnectionReaderImplTest extends BriarTestCase {
assertEquals(MAX_PAYLOAD_LENGTH / 2, c.read(buf));
// Reach EOF
assertEquals(-1, c.read(buf, 0, buf.length));
context.assertIsSatisfied();
}
@Test
@@ -99,5 +102,6 @@ public class ConnectionReaderImplTest extends BriarTestCase {
MAX_PAYLOAD_LENGTH / 2));
// Reach EOF
assertEquals(-1, c.read(buf, 0, buf.length));
context.assertIsSatisfied();
}
}

118
test/net/sf/briar/transport/ConnectionWriterImplTest.java
View File

@@ -1,13 +1,123 @@
package net.sf.briar.transport;
import org.junit.Test;
import static net.sf.briar.api.transport.TransportConstants.HEADER_LENGTH;
import static net.sf.briar.api.transport.TransportConstants.MAC_LENGTH;
import net.sf.briar.BriarTestCase;
import org.jmock.Expectations;
import org.jmock.Mockery;
import org.junit.Test;
public class ConnectionWriterImplTest extends BriarTestCase {
// FIXME: This is an arbitrary change to test the synchronization view
private static final int FRAME_LENGTH = 1024;
private static final int MAX_PAYLOAD_LENGTH =
FRAME_LENGTH - HEADER_LENGTH - MAC_LENGTH;
@Test
public void testNothing() {}
public void testCloseWithoutWritingWritesFinalFrame() throws Exception {
Mockery context = new Mockery();
final FrameWriter writer = context.mock(FrameWriter.class);
context.checking(new Expectations() {{
// Write an empty final frame
oneOf(writer).writeFrame(with(any(byte[].class)), with(0),
with(true));
// Flush the stream
oneOf(writer).flush();
}});
ConnectionWriterImpl c = new ConnectionWriterImpl(writer, FRAME_LENGTH);
c.close();
context.assertIsSatisfied();
}
@Test
public void testFlushWithoutBufferedDataWritesFrame() throws Exception {
Mockery context = new Mockery();
final FrameWriter writer = context.mock(FrameWriter.class);
ConnectionWriterImpl c = new ConnectionWriterImpl(writer, FRAME_LENGTH);
context.checking(new Expectations() {{
// Flush the stream
oneOf(writer).flush();
}});
c.flush();
context.assertIsSatisfied();
}
@Test
public void testFlushWithBufferedDataWritesFrameAndFlushes()
throws Exception {
Mockery context = new Mockery();
final FrameWriter writer = context.mock(FrameWriter.class);
ConnectionWriterImpl c = new ConnectionWriterImpl(writer, FRAME_LENGTH);
context.checking(new Expectations() {{
// Write a non-final frame with one payload byte
oneOf(writer).writeFrame(with(any(byte[].class)), with(1),
with(false));
// Flush the stream
oneOf(writer).flush();
}});
c.write(0);
c.flush();
context.assertIsSatisfied();
}
@Test
public void testSingleByteWritesWriteFullFrame() throws Exception {
Mockery context = new Mockery();
final FrameWriter writer = context.mock(FrameWriter.class);
ConnectionWriterImpl c = new ConnectionWriterImpl(writer, FRAME_LENGTH);
context.checking(new Expectations() {{
// Write a full non-final frame
oneOf(writer).writeFrame(with(any(byte[].class)),
with(MAX_PAYLOAD_LENGTH), with(false));
}});
for(int i = 0; i < MAX_PAYLOAD_LENGTH; i++) {
c.write(0);
}
context.assertIsSatisfied();
}
@Test
public void testMultiByteWritesWriteFullFrames() throws Exception {
Mockery context = new Mockery();
final FrameWriter writer = context.mock(FrameWriter.class);
ConnectionWriterImpl c = new ConnectionWriterImpl(writer, FRAME_LENGTH);
context.checking(new Expectations() {{
// Write two full non-final frames
exactly(2).of(writer).writeFrame(with(any(byte[].class)),
with(MAX_PAYLOAD_LENGTH), with(false));
}});
// Sanity check
assertEquals(0, MAX_PAYLOAD_LENGTH % 2);
// Write two full payloads using four multi-byte writes
byte[] b = new byte[MAX_PAYLOAD_LENGTH / 2];
c.write(b);
c.write(b);
c.write(b);
c.write(b);
context.assertIsSatisfied();
}
@Test
public void testLargeMultiByteWriteWritesFullFrames() throws Exception {
Mockery context = new Mockery();
final FrameWriter writer = context.mock(FrameWriter.class);
ConnectionWriterImpl c = new ConnectionWriterImpl(writer, FRAME_LENGTH);
context.checking(new Expectations() {{
// Write two full non-final frames
exactly(2).of(writer).writeFrame(with(any(byte[].class)),
with(MAX_PAYLOAD_LENGTH), with(false));
// Write a final frame with a one-byte payload
oneOf(writer).writeFrame(with(any(byte[].class)), with(1),
with(true));
// Flush the stream
oneOf(writer).flush();
}});
// Write two full payloads using one large multi-byte write
byte[] b = new byte[MAX_PAYLOAD_LENGTH * 2 + 1];
c.write(b);
// There should be one byte left in the buffer
c.close();
context.assertIsSatisfied();
}
}