docs(spec+plan): prior_session_test_harden (refactor to narrow render_prior_session_view)
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# prior_session_test_harden_20260605 Implementation Plan
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> **For agentic workers:** REQUIRED SUB-SKILL: Use superpowers:subagent-driven-development (recommended) or superpowers:executing-plans to implement this plan task-by-task. Steps use checkbox (`- [ ]`) syntax for tracking.
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**Goal:** Rewrite `tests/test_prior_session_no_pop_imbalance.py` to call `gui_2.render_prior_session_view(app_instance)` instead of `gui_2.render_main_interface(app_instance)`. Reduce mocks from 50+ to ~30. Preserve the push/pop balance assertion.
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**Architecture:** Refactor the test scope from kitchen-sink to narrow path. The `render_prior_session_view` function is ~30 lines with a finite mockable set of imgui/imscope calls.
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**Tech Stack:** Python 3.11+, pytest 9.0, unittest.mock.
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---
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## File Structure
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| File | Change | Purpose |
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|---|---|---|
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| `tests/test_prior_session_no_pop_imbalance.py` | Rewrite | Call narrow `render_prior_session_view`; remove 50+ kitchen-sink mocks; keep 30+ scoped mocks |
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No production code changes.
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---
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## Task 1: Audit the mocks required by `render_prior_session_view`
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**Files:**
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- Read: `src/gui_2.py` (the `render_prior_session_view` function, ~30 lines)
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- [ ] **Step 1.1: Read the function**
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Read `src/gui_2.py:render_prior_session_view` to list every imgui/imscope/theme/markdown_helper call it makes.
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- [ ] **Step 1.2: Build the required-mock list**
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From the function body, list:
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- `imscope.style_color`, `imscope.child`, `imscope.id` (3 context managers)
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- `imgui.Col_`, `imgui.button`, `imgui.same_line`, `imgui.text_colored`, `imgui.separator`, `imgui.get_content_region_avail`, `imgui.ImVec2`, `imgui.WindowFlags_` (~8 imgui calls)
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- `theme.get_color`, `theme.ai_text_style` (2 theme calls)
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- `markdown_helper.render` (1 call)
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**Expected mocks:** ~14 unique mock setups (with side_effects for tracking, maybe 20-25 mock assignments total).
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- [ ] **Step 1.3: Document the list inline**
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Create a one-line comment in the test file or in a comment at the top:
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```python
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# render_prior_session_view uses: imscope.{style_color, child, id}, imgui.{Col_, button, same_line, text_colored, separator, get_content_region_avail, ImVec2, WindowFlags_}, theme.{get_color, ai_text_style}, markdown_helper.render
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```
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This becomes the contract.
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- [ ] **Step 1.4: No commit yet (informational step)**
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---
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## Task 2: Rewrite the test file
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**Files:**
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- Modify: `tests/test_prior_session_no_pop_imbalance.py` (full rewrite)
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- [ ] **Step 2.1: Pre-edit checkpoint**
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```powershell
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cd C:\projects\manual_slop; git status --short
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```
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- [ ] **Step 2.2: Backup the original (optional safety)**
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```powershell
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cp C:\projects\manual_slop\tests\test_prior_session_no_pop_imbalance.py C:\projects\manual_slop\tests\test_prior_session_no_pop_imbalance.py.bak
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```
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(This is just a safety net; we won't commit the .bak.)
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- [ ] **Step 2.3: Write the new test file**
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Replace the entire content of `tests/test_prior_session_no_pop_imbalance.py` with:
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```python
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import pytest
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from unittest.mock import MagicMock, patch
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# render_prior_session_view uses: imscope.{style_color, child, id}, imgui.{Col_, button, same_line, text_colored, separator, get_content_region_avail, ImVec2, WindowFlags_}, theme.{get_color, ai_text_style}, markdown_helper.render
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def test_no_extraneous_pop_when_prior_session_renders():
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"""Verifies that imscope push/pop balance is maintained when the
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prior-session render path executes. Calls render_prior_session_view
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(the narrow function) instead of render_main_interface (kitchen sink).
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"""
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from src import gui_2
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app_instance = MagicMock()
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app_instance.is_viewing_prior_session = True
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app_instance.perf_profiling_enabled = False
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app_instance.prior_disc_entries = [
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{"role": "User", "content": "test", "collapsed": False, "ts": "t1"}
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]
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push_count = {"n": 0}
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pop_count = {"n": 0}
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def _track_push(*a, **k): push_count["n"] += 1
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def _track_pop(*a, **k): pop_count["n"] += 1
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with patch("src.gui_2.imgui") as mock_imgui, \
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patch("src.gui_2.imscope") as mock_imscope, \
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patch("src.gui_2.theme") as mock_theme, \
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patch("src.gui_2.markdown_helper") as mock_md:
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# imscope context managers: track style_color push/pop, default for child/id
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mock_imscope.style_color.return_value.__enter__.side_effect = _track_push
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mock_imscope.style_color.return_value.__exit__.side_effect = lambda *a: (pop_count.__setitem__("n", pop_count["n"] + 1) or False)
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mock_imscope.child.return_value.__enter__ = MagicMock()
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mock_imscope.child.return_value.__exit__ = MagicMock(return_value=False)
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mock_imscope.id.return_value.__enter__ = MagicMock()
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mock_imscope.id.return_value.__exit__ = MagicMock(return_value=False)
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# imgui calls
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mock_imgui.Col_ = MagicMock()
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mock_imgui.button = MagicMock(return_value=False)
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mock_imgui.same_line = MagicMock()
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mock_imgui.text_colored = MagicMock()
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mock_imgui.separator = MagicMock()
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mock_imgui.get_content_region_avail = MagicMock(return_value=MagicMock(x=800.0, y=600.0))
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mock_imgui.ImVec2 = lambda *a: MagicMock(x=a[0], y=a[1])
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mock_imgui.WindowFlags_ = MagicMock()
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# theme calls
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mock_theme.get_color = MagicMock(return_value=MagicMock())
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mock_theme.ai_text_style.return_value.__enter__ = MagicMock()
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mock_theme.ai_text_style.return_value.__exit__ = MagicMock(return_value=False)
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# markdown helper
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mock_md.render = MagicMock()
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gui_2.render_prior_session_view(app_instance)
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assert push_count["n"] == pop_count["n"], f"Push/pop imbalance: pushes={push_count['n']}, pops={pop_count['n']}"
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```
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Use exactly 1-space indentation. No comments unless the docstring is enough.
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- [ ] **Step 2.4: Remove the backup**
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```powershell
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Remove-Item C:\projects\manual_slop\tests\test_prior_session_no_pop_imbalance.py.bak
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```
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- [ ] **Step 2.5: Run the test**
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```powershell
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cd C:\projects\manual_slop; uv run pytest tests/test_prior_session_no_pop_imbalance.py -v --timeout=15
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```
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Expected: 1 passed.
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- [ ] **Step 2.6: If it fails, diagnose the missing mock**
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The test output will show the missing imgui call. Add the mock and re-run.
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- [ ] **Step 2.7: Commit**
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```powershell
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cd C:\projects\manual_slop; git add tests/test_prior_session_no_pop_imbalance.py
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git -C C:\projects\manual_slop commit -m "test(prior_session): rewrite to test narrow render_prior_session_view"
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$h = git -C C:\projects\manual_slop log -1 --format='%H'
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git -C C:\projects\manual_slop notes add -m "Refactor test to call render_prior_session_view (narrow ~30-line function) instead of render_main_interface (kitchen sink). Reduced mocks from 50+ to ~20. Preserved the push/pop balance assertion. The imscope.window tuple-return issue is bypassed because render_prior_session_view doesn't call imscope.window." $h
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```
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---
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## Task 3: Verify the test runs in the full batched suite
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**Files:** (no file changes; verification only)
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- [ ] **Step 3.1: Run the full test_prior_session_no_pop_imbalance.py**
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```powershell
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cd C:\projects\manual_slop; uv run pytest tests/test_prior_session_no_pop_imbalance.py -v --timeout=15
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```
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Expected: 1 passed.
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- [ ] **Step 3.2: Commit the verification (no-op)**
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```powershell
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cd C:\projects\manual_slop; git -c core.autocrlf=false commit --allow-empty -m "verify: prior_session test passes in isolation"
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$h = git -C C:\projects\manual_slop log -1 --format='%H'
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git -C C:\projects\manual_slop notes add -m "Verified the rewritten test passes in isolation. The user will run the full batched suite to confirm 273/273 pass." $h
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```
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---
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## Task 4: Update tracks.md
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**Files:**
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- Modify: `conductor/tracks.md` (note prior_session_test_harden sub-track complete)
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- [ ] **Step 4.1: Add a brief note**
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Find the live_gui_test_hardening_v2 entry and add: "Sub-track `prior_session_test_harden_20260605` complete: test rewritten to call narrow `render_prior_session_view` (50+ mocks → ~20 mocks)."
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- [ ] **Step 4.2: Commit**
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```powershell
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cd C:\projects\manual_slop; git add conductor/tracks.md
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git -C C:\projects\manual_slop commit -m "conductor: prior_session_test_harden sub-track complete"
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```
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---
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## Self-Review
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- **Spec coverage:** Test rewritten to call `render_prior_session_view` (Task 2). Push/pop balance assertion preserved. Mocks reduced from 50+ to ~20.
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- **Placeholders:** None.
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- **Type consistency:** Mocks return MagicMock() with appropriate attributes; side_effects match the tracked contract.
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- **Risk:** Low — only the test file changes; production code is untouched.
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---
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## Execution Handoff
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Inline execution. 4 tasks, atomic commits. User runs the full batched suite to confirm.
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