Listener

Listener receives lifecycle callbacks during discovery and execution.

Callbacks

• initialize(Configuration)
• onDiscoveryStarted()
• onDiscoveryCompleted(Descriptor root)
• onRunStarted()
• onBeforeExecution(Descriptor descriptor)
• onAfterExecution(Descriptor descriptor)
• onRunCompleted(Result result)

All methods have default no-op implementations, so custom listeners can override only what they need.

Listener listener = new Listener() {
    @Override
    public void onRunCompleted(Result result) {
        System.out.println(result.isPassed() ? "PASSED" : "NOT PASSED");
    }
};

var runner = Runner.builder().listener(listener).build();

Listener.defaultListener(configuration) creates the framework's console/report listener chain.