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Unit tests for ConnectionWindowImpl.

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This commit is contained in:
akwizgran
2011-08-11 13:37:18 +01:00
parent e0b86f1232
commit ac4521152f
4 changed files with 84 additions and 1 deletions
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1
components/net/sf/briar/transport/ConnectionWindowImpl.java
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@@ -31,6 +31,7 @@ class ConnectionWindowImpl implements ConnectionWindow {
public void setSeen(long connectionNumber) { public void setSeen(long connectionNumber) {
int offset = getOffset(connectionNumber); int offset = getOffset(connectionNumber);
int mask = 0x80000000 >>> offset; int mask = 0x80000000 >>> offset;
if((bitmap & mask) != 0) throw new IllegalArgumentException();
bitmap |= mask; bitmap |= mask;
// If the new connection number is above the centre, slide the window // If the new connection number is above the centre, slide the window
if(connectionNumber >= centre) { if(connectionNumber >= centre) {

1
components/net/sf/briar/transport/TransportModule.java
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@@ -1,7 +1,6 @@
package net.sf.briar.transport; package net.sf.briar.transport;
import net.sf.briar.api.transport.ConnectionWindowFactory; import net.sf.briar.api.transport.ConnectionWindowFactory;
import net.sf.briar.api.transport.PacketWriter;
import com.google.inject.AbstractModule; import com.google.inject.AbstractModule;

1
test/build.xml
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@@ -32,6 +32,7 @@
<test name='net.sf.briar.serial.ReaderImplTest'/> <test name='net.sf.briar.serial.ReaderImplTest'/>
<test name='net.sf.briar.serial.WriterImplTest'/> <test name='net.sf.briar.serial.WriterImplTest'/>
<test name='net.sf.briar.setup.SetupWorkerTest'/> <test name='net.sf.briar.setup.SetupWorkerTest'/>
<test name='net.sf.briar.transport.ConnectionWindowImplTest'/>
<test name='net.sf.briar.transport.PacketEncrypterImplTest'/> <test name='net.sf.briar.transport.PacketEncrypterImplTest'/>
<test name='net.sf.briar.transport.PacketWriterImplTest'/> <test name='net.sf.briar.transport.PacketWriterImplTest'/>
<test name='net.sf.briar.util.FileUtilsTest'/> <test name='net.sf.briar.util.FileUtilsTest'/>

82
test/net/sf/briar/transport/ConnectionWindowImplTest.java Normal file
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@@ -0,0 +1,82 @@
package net.sf.briar.transport;
import junit.framework.TestCase;
import org.junit.Test;
public class ConnectionWindowImplTest extends TestCase {
@Test
public void testWindowSliding() {
ConnectionWindowImpl w = new ConnectionWindowImpl(0L, 0);
for(int i = 0; i < 100; i++) {
assertFalse(w.isSeen(i));
w.setSeen(i);
assertTrue(w.isSeen(i));
}
}
@Test
public void testWindowJumping() {
ConnectionWindowImpl w = new ConnectionWindowImpl(0L, 0);
for(int i = 0; i < 100; i += 13) {
assertFalse(w.isSeen(i));
w.setSeen(i);
assertTrue(w.isSeen(i));
}
}
@Test
public void testWindowUpperLimit() {
ConnectionWindowImpl w = new ConnectionWindowImpl(0L, 0);
// Centre is 0, highest value in window is 15
w.setSeen(15);
// Centre is 16, highest value in window is 31
w.setSeen(31);
try {
// Centre is 32, highest value in window is 47
w.setSeen(48);
fail();
} catch(IllegalArgumentException expected) {}
}
@Test
public void testWindowLowerLimit() {
ConnectionWindowImpl w = new ConnectionWindowImpl(0L, 0);
// Centre is 0, negative values should never be allowed
try {
w.setSeen(-1);
fail();
} catch(IllegalArgumentException expected) {}
// Slide the window
w.setSeen(15);
// Centre is 16, lowest value in window is 0
w.setSeen(0);
// Slide the window
w.setSeen(16);
// Centre is 17, lowest value in window is 1
w.setSeen(1);
try {
w.setSeen(0);
fail();
} catch(IllegalArgumentException expected) {}
// Slide the window
w.setSeen(25);
// Centre is 26, lowest value in window is 10
w.setSeen(10);
try {
w.setSeen(9);
fail();
} catch(IllegalArgumentException expected) {}
}
@Test
public void testCannotSetSameValueTwice() {
ConnectionWindowImpl w = new ConnectionWindowImpl(0L, 0);
w.setSeen(15);
try {
w.setSeen(15);
fail();
} catch(IllegalArgumentException expected) {}
}
}