Category A Migration Plan - Detailed Scope

Overview

Per @tig's request, migrating ALL Category A tests (Drawing/LineCanvas, Drawing/Ruler, View/Adornment/, View/Draw/) to parallelizable. These should ALL be unit tests with no Application dependency.

Detailed Analysis

1. LineCanvasTests.cs (1426 lines, 33 SetupFakeDriver uses)

Test Categories:

13 tests use ToString() directly - Can migrate immediately, no driver needed
- Length_0_Is_1_Long, Length_n_Is_n_Long, Length_Negative, LengthZero, ToString_, Add_2_Lines
16 tests use GetCanvas() + View.Draw() - Require refactoring
- TestLineCanvasWindow, TestLineCanvasLeaveMargin, Viewport_*, Canvas_Updates_On_Changes

Migration Strategy:

Port 13 ToString() tests directly to Parallelizable (straightforward)
For GetCanvas() tests: LineCanvas has GetMap() method - can test directly without View
Delete old LineCanvasTests.cs after migration

Estimated Effort: 3-4 hours

2. RulerTests.cs

Status: Need to analyze Estimated Effort: 1-2 hours

3. View/Adornment/*.cs (5 files)

Files:

AdornmentTests.cs
BorderTests.cs
MarginTests.cs
PaddingTests.cs
ShadowStyleTests.cs

Status: Need to analyze each Estimated Effort: 3-4 hours total

4. View/Draw/*.cs (5 files)

Files:

AllViewsDrawTests.cs
ClearViewportTests.cs
ClipTests.cs
DrawTests.cs
TransparentTests.cs

Status: Need to analyze each Estimated Effort: 4-5 hours total

Total Estimated Effort: 11-15 hours

Immediate Action Plan

Phase 1: LineCanvasTests (Starting Now)

Create Tests/UnitTestsParallelizable/Drawing/LineCanvasTests.cs
Migrate all 13 ToString() tests (30 minutes)
Refactor 16 GetCanvas() tests to use GetMap() directly (2 hours)
Add any missing test coverage (1 hour)
Delete Tests/UnitTests/Drawing/LineCanvasTests.cs
Test and verify (30 minutes)

Phase 2: RulerTests

Similar approach

Phase 3: Adornment Tests

Systematic file-by-file migration

Phase 4: View/Draw Tests