/**
* Tests that the sucker stops sucking if a flush is required, and resumes when the flush is done.
*/
public void testFlushPausesSucking() {
// Set expectations.
WaveletOperation op = makeOp();
channel.expectPeek(op);
sink.expectFlush(op, false);
// Go!
sucker.onOperationReceived();
channel.checkExpectationsSatisfied();
sink.checkExpectationsSatisfied();
Runnable resume = sink.getLastResumeCommand();
assertNotNull(resume);
// Another op received should not cause any action
sucker.onOperationReceived();
channel.checkExpectationsSatisfied();
sink.checkExpectationsSatisfied();
// Set expectations for the resume command.
channel.expectPeek(op);
sink.expectFlush(op, true);
channel.expectPeek(op);
channel.expectReceive(op);
sink.expectConsume(op, null);
channel.expectPeek(null);
// Go!
resume.run();
}
/**
* Tests that the sucker keeps sucking while ops are available and the sink doesn't need to flush.
*/
public void testSucksWhileNoFlushNeeded() {
// Set expectations.
WaveletOperation[] ops = makeOps(3);
for (int i = 0; i < 3; ++i) {
WaveletOperation op = ops[0];
channel.expectPeek(op);
sink.expectFlush(op, true);
// The sucker peeks again after flush in case the op has changed.
channel.expectPeek(op);
channel.expectReceive(op);
sink.expectConsume(op, null);
}
channel.expectPeek(null);
// Go!
sucker.onOperationReceived();
}
/**
* Tests that the sucker doesn't touch the operation channel after being shut down while consuming
* ops.
*/
public void testStopsSuckingAfterShutdown() {
// Set expectations.
WaveletOperation op = makeOp();
channel.expectPeek(op);
sink.expectFlush(op, true);
channel.expectPeek(op);
channel.expectReceive(op);
// Shut down the sucker when consuming the op.
sink.expectConsume(
op,
new Runnable() {
@Override
public void run() {
sucker.shutdown();
}
});
// No more expectations of peek() or receive().
sucker.onOperationReceived();
}