---
phase: 25-memory-leak-audit
type: uat
status: pending
verified-by:
verified-date:
---

# Phase 25: Recording Memory Leak Verification UAT

## Prerequisites

- **Browser:** Chrome (recommended for DevTools memory profiling)
- **DevTools:** Open with Performance Monitor and Console tabs visible
- **jam-ui:** Running locally (`npm run start`)
- **web backend:** Running (`./runweb`)
- **Native client:** Running and connected
- **Session:** Active session with at least one other participant

## Quick Verification (2-3 minutes)

Before full verification, confirm basic stability:

1. Join a session
2. Open recording modal
3. Close recording modal
4. Repeat open/close 5 times
5. Check console for "state update on unmounted component" warnings

**Quick check pass:** [ ]

**Expected:** No console warnings about state updates

---

## Section 1: Timer Cleanup Verification

**Purpose:** Verify waitingOnStopTimer is cleared on unmount (MEM-02)

### Test Steps

1. **Start Recording**
   - [ ] Join a session
   - [ ] Open recording modal
   - [ ] Fill in recording name
   - [ ] Click "Start Recording"
   - [ ] Verify recording starts (status indicator shows "Recording")

2. **Stop Recording**
   - [ ] Wait 5+ seconds for recording to be active
   - [ ] Open recording modal again
   - [ ] Click "Stop Recording"
   - [ ] Verify recording stops

3. **Leave Session**
   - [ ] Click the leave button to exit session
   - [ ] Navigate to dashboard

4. **Check Console**
   - [ ] Open browser console (F12 > Console)
   - [ ] Look for any timer-related errors
   - [ ] Look for errors about clearTimeout failures

### Expected Results

| Check | Expected | Actual |
|-------|----------|--------|
| Recording starts cleanly | Yes | |
| Recording stops cleanly | Yes | |
| No timer-related errors on leave | Yes | |
| Console errors | None | |

**Section 1 Pass:** [ ]

---

## Section 2: Callback Cleanup Verification

**Purpose:** Verify window.JK callbacks don't accumulate (MEM-01)

### Test Steps

1. **Open Browser Console**
   - [ ] Open browser console (F12 > Console)
   - [ ] Type `Object.keys(window.JK)` and press Enter
   - [ ] Record initial callback names: ________________

2. **Open/Close Recording Modal 20 Times**
   - [ ] Join a session
   - [ ] Open recording modal
   - [ ] Close recording modal
   - [ ] Repeat 20 times

3. **Check Callbacks Again**
   - [ ] In console, type `Object.keys(window.JK)` again
   - [ ] Record callback names: ________________
   - [ ] Verify same callback names (no duplicates)
   - [ ] Verify no accumulation of callbacks

4. **Verify Callbacks Still Work**
   - [ ] Open recording modal one more time
   - [ ] Start a recording
   - [ ] Verify recording starts successfully
   - [ ] Stop recording
   - [ ] Verify recording stops successfully

### Expected Results

| Check | Expected | Actual |
|-------|----------|--------|
| Callbacks match initial list | Yes | |
| No duplicate callbacks | Yes | |
| No accumulated callbacks | Yes | |
| Callbacks still functional | Yes | |
| Console errors | None | |

**Section 2 Pass:** [ ]

---

## Section 3: Async Operation Cleanup Verification

**Purpose:** Verify no "state update on unmounted component" warnings (MEM-03)

### Test Steps

1. **Open Console**
   - [ ] Open browser console (F12 > Console)
   - [ ] Clear console output

2. **Rapid Open/Close Test**
   - [ ] Join a session
   - [ ] Open recording modal
   - [ ] **Immediately** close recording modal (before it finishes loading)
   - [ ] Repeat 10 times as quickly as possible
   - [ ] Monitor console for warnings

3. **Check for Warnings**
   - [ ] Look for "Warning: Can't perform a React state update on an unmounted component"
   - [ ] Look for "setState called on unmounted component"
   - [ ] Look for any async-related errors

4. **Verify App Still Works**
   - [ ] Open recording modal normally
   - [ ] Verify audio store type loads correctly
   - [ ] Verify video sources load (if available)
   - [ ] Close modal
   - [ ] Verify no errors

### Expected Results

| Check | Expected | Actual |
|-------|----------|--------|
| No state update warnings | Yes | |
| No unmounted component errors | Yes | |
| Modal loads correctly after test | Yes | |
| Console errors | None | |

**Section 3 Pass:** [ ]

---

## Section 4: 15-Minute Modal Idle Test

**Purpose:** Verify modal can stay open without memory growth (MEM-03)

### Test Steps

1. **Open Performance Monitor**
   - [ ] Chrome DevTools > More tools > Performance monitor
   - [ ] Record initial JS heap size: ______ MB

2. **Open Recording Modal**
   - [ ] Join a session
   - [ ] Open recording modal
   - [ ] Leave modal open
   - [ ] Note start time: ______

3. **Wait and Observe**
   - [ ] Keep modal open for 15+ minutes
   - [ ] Check heap size every 5 minutes:
     - 5 min: ______ MB | Responsive? [ ]
     - 10 min: ______ MB | Responsive? [ ]
     - 15 min: ______ MB | Responsive? [ ]

4. **Final Check**
   - [ ] Note end time: ______
   - [ ] Total duration: ______ minutes
   - [ ] Final heap size: ______ MB
   - [ ] Calculate growth: ______ MB (______ %)

5. **Close Modal**
   - [ ] Close recording modal
   - [ ] Verify no console errors

### Expected Results

| Check | Expected | Actual |
|-------|----------|--------|
| Initial heap size | < 200 MB | |
| Final heap size | < 300 MB | |
| Growth < 50% | Yes | |
| No freezes | Yes | |
| UI renders correctly | Yes | |

**Section 4 Pass:** [ ]

---

## Section 5: 15-Minute Active Recording Test

**Purpose:** Verify active recording doesn't leak memory (MEM-01, MEM-02, MEM-03)

### Test Steps

1. **Setup Performance Monitor**
   - [ ] Chrome DevTools > More tools > Performance monitor
   - [ ] Record initial JS heap size: ______ MB

2. **Start Recording**
   - [ ] Join a session
   - [ ] Open recording modal
   - [ ] Fill in recording name: "Memory Test"
   - [ ] Click "Start Recording"
   - [ ] Verify recording starts
   - [ ] Note start time: ______

3. **Monitor During Recording**
   - [ ] Keep recording active for 15+ minutes
   - [ ] Check heap size every 5 minutes:
     - 5 min: ______ MB | Recording? [ ]
     - 10 min: ______ MB | Recording? [ ]
     - 15 min: ______ MB | Recording? [ ]

4. **Stop Recording**
   - [ ] Open recording modal
   - [ ] Click "Stop Recording"
   - [ ] Verify recording stops
   - [ ] Note end time: ______
   - [ ] Total duration: ______ minutes

5. **Final Memory Check**
   - [ ] Wait 30 seconds for cleanup
   - [ ] Note final heap size: ______ MB
   - [ ] Calculate growth: ______ MB (______ %)

6. **Verify Recording File**
   - [ ] Check that recording file was created
   - [ ] Verify recording duration matches test duration
   - [ ] Verify recording is playable

### Expected Results

| Check | Expected | Actual |
|-------|----------|--------|
| Recording starts cleanly | Yes | |
| Recording runs for 15+ min | Yes | |
| Growth < 50% | Yes | |
| No freezes | Yes | |
| Recording stops cleanly | Yes | |
| Recording file created | Yes | |
| Console errors | None | |

**Section 5 Pass:** [ ]

---

## Verification Results Summary

| Section | Status | Notes |
|---------|--------|-------|
| Quick Verification | | |
| Section 1: Timer Cleanup | | |
| Section 2: Callback Cleanup | | |
| Section 3: Async Cleanup | | |
| Section 4: 15-min Modal Idle | | |
| Section 5: 15-min Active Recording | | |

**Overall UAT Status:** [ ] PASS / [ ] FAIL

**Verifier:** ________________

**Date:** ________________

**Notes:**

---

## Troubleshooting

If any section fails:

### Timer Cleanup Issues
- Check `useRecordingHelpers.js` for timer cleanup useEffect
- Look for "clearTimeout" in cleanup function
- Verify cleanup runs on unmount (add console.log if needed)
- Review error stack trace for timer-related issues

### Callback Accumulation Issues
- Type `Object.keys(window.JK)` in console to see registered callbacks
- Check `useRecordingHelpers.js` for conditional cleanup logic
- Verify callbacksRef is tracking registered callbacks
- Look for "delete window.JK[key]" in cleanup function
- Check if multiple hook instances are sharing callbacks correctly

### Async Cleanup Issues
- Check `JKSessionRecordingModal.js` for ignore flag pattern
- Verify both useEffect hooks have "let ignore = false"
- Confirm state updates are wrapped in "if (!ignore)"
- Look for "return () => { ignore = true; }" in both hooks
- Review error message to identify which async operation failed

### Memory Growth Issues
- Take heap snapshots at start, middle, and end of test
- Look for arrays/objects that grow without bound
- Check for detached DOM nodes in memory snapshot
- Review timer cleanup - timers can accumulate if not cleared
- Check callback cleanup - callbacks can hold references
- Look for event listeners that aren't being removed

### Recording Issues
- Verify native client is connected and functional
- Check that recording REST API calls succeed
- Review native client logs for recording errors
- Ensure OBS Studio is installed (if recording video)
- Check that audio/video sources are available

---

*UAT Template Version: 1.1*
*Created: 2026-02-24*
*For: Phase 25 - Recording Memory Leak Audit*
*Based on: Phase 23 UAT Template*
