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Poll for generation completion by monitoring send button state #154

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kirklandsign wants to merge 2 commits into from
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Poll for generation completion by monitoring send button state #154

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Poll for generation completion by monitoring send button state
kirklandsign Jan 15, 2026
5ee4f59
poll
kirklandsign Jan 15, 2026
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37 changes: 34 additions & 3 deletions ...id/LlamaDemo/app/src/androidTest/java/com/example/executorchllamademo/UIWorkflowTest.java
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Original file line number Diff line number Diff line change
Expand Up @@ -29,6 +29,7 @@
import android.content.Context;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.widget.ImageButton;
import android.widget.ListView;
import androidx.test.core.app.ActivityScenario;
import androidx.test.core.app.ApplicationProvider;
Expand Down Expand Up @@ -198,9 +199,13 @@ public void testSendMessageAndReceiveResponse() throws Exception {
// Click send button
onView(withId(R.id.sendButton)).perform(click());

// --- Wait for response and validate ---
// Wait 50 seconds for model to generate response
Thread.sleep(50000);
// --- Wait for generation to complete ---
// Give a brief moment for generation to start (button becomes non-clickable)
Thread.sleep(500);

// Wait for generation to complete (button becomes clickable again)
boolean generationComplete = waitForButtonState(scenario, true, 120000); // 2 minute timeout
assertTrue("Generation should complete", generationComplete);

// Extract all messages from the list
AtomicInteger messageCount = new AtomicInteger(0);
Expand Down Expand Up @@ -265,6 +270,32 @@ private boolean waitForModelLoaded(ActivityScenario<MainActivity> scenario, long
return false;
}

/**
* Waits for the send button to reach the expected clickable state.
*
* @param scenario the activity scenario
* @param expectedClickable the expected clickable state (true = clickable/send, false = non-clickable/stop)
* @param timeoutMs maximum time to wait in milliseconds
* @return true if button reached expected state, false if timeout
*/
private boolean waitForButtonState(ActivityScenario<MainActivity> scenario, boolean expectedClickable, long timeoutMs) throws InterruptedException {
long startTime = System.currentTimeMillis();
while (System.currentTimeMillis() - startTime < timeoutMs) {
AtomicReference<Boolean> isClickable = new AtomicReference<>(null);
scenario.onActivity(activity -> {
ImageButton sendButton = activity.findViewById(R.id.sendButton);
if (sendButton != null) {
isClickable.set(sendButton.isClickable());
}
});
if (isClickable.get() != null && isClickable.get() == expectedClickable) {
return true;
}
Thread.sleep(200); // Poll every 200ms
}
return false;
}

/**
* Writes the model response to logcat with a special tag for extraction.
* The response can be extracted from logcat using: grep "LLAMA_RESPONSE"
Expand Down