---
phase: 20-unit-integration-tests
verified: 2026-03-28T02:40:00Z
status: passed
score: 9/9 must-haves verified
re_verification: false
---

# Phase 20: Unit & Integration Tests Verification Report

**Phase Goal:** Decomposed components have test coverage that catches regressions before they reach production
**Verified:** 2026-03-28T02:40:00Z
**Status:** passed
**Re-verification:** No — initial verification

## Goal Achievement

### Observable Truths

| #   | Truth                                                                                      | Status     | Evidence                                                                                                                                   |
| --- | ------------------------------------------------------------------------------------------ | ---------- | ------------------------------------------------------------------------------------------------------------------------------------------ |
| 1   | WordTimingAligner correctly extracts timings from MToken arrays filtering punctuation      | ✓ VERIFIED | WordTimingAlignerTests.swift — 7 extractTimingsFromTokens tests covering nil, empty, valid, punctuation, missing timestamps, zero duration |
| 2   | WordTimingAligner aligns MToken onsets to subtitle words even when counts differ           | ✓ VERIFIED | alignOnsetsEqualCountFastPath, alignOnsetsMoreSubtitleWordsThanTokens, alignOnsetsMoreTokensThanSubtitleWords (3 tests)                    |
| 3   | WordTimingAligner handles hyphenated words in character-offset alignment                   | ✓ VERIFIED | alignOnsetsHyphenatedWord — "mid-decay" split from ["mid","decay"] tokens                                                                  |
| 4   | PronunciationProcessor replaces 'plugin' variants with hyphenated forms                    | ✓ VERIFIED | 8 tests: all 4 case variants (plugin/plugins/Plugin/Plugins) + word boundary checks                                                        |
| 5   | PronunciationProcessor respects word boundaries (no partial matches)                       | ✓ VERIFIED | doesNotReplacePartialMatches (unplugin), doesNotReplacePluginfo                                                                            |
| 6   | SentenceSplitter splits on sentence boundaries while preserving abbreviations and decimals | ✓ VERIFIED | 11 tests: period/exclamation/question splits, single-letter abbrev, decimal, empty, trailing fragment merge                                |
| 7   | SubtitleChunker correctly splits text into 2-line pages by pixel width                     | ✓ VERIFIED | 14 tests in SubtitleChunkerTests: empty, short, long, whitespace, contiguity, single-word overflow                                         |
| 8   | SubtitleChunker break priority favors clause and phrase boundaries                         | ✓ VERIFIED | breakPriorityClauseBoundary (returns 3), breakPriorityPhraseWord (returns 2), breakPriorityRegularWord (returns 1)                         |
| 9   | Integration test verifies SentenceSplitter -> SubtitleChunker -> WordTimingAligner chain   | ✓ VERIFIED | StreamingPipelineTests.swift — 5 tests: multi-sentence sequencing, word order, timing sums, empty input                                    |

**Score:** 9/9 truths verified

### Required Artifacts

| Artifact                                                                                  | Expected                                     | Lines | Min Required | Status     | Details                               |
| ----------------------------------------------------------------------------------------- | -------------------------------------------- | ----- | ------------ | ---------- | ------------------------------------- |
| `plugins/claude-tts-companion/Tests/CompanionCoreTests/WordTimingAlignerTests.swift`      | Unit tests for WordTimingAligner             | 236   | 80           | ✓ VERIFIED | 21 test methods; 3x the minimum       |
| `plugins/claude-tts-companion/Tests/CompanionCoreTests/PronunciationProcessorTests.swift` | Unit tests for PronunciationProcessor        | 48    | 30           | ✓ VERIFIED | 8 test methods; all override patterns |
| `plugins/claude-tts-companion/Tests/CompanionCoreTests/SentenceSplitterTests.swift`       | Unit tests for SentenceSplitter              | 70    | 40           | ✓ VERIFIED | 11 test methods; all edge cases       |
| `plugins/claude-tts-companion/Tests/CompanionCoreTests/SubtitleChunkerTests.swift`        | Expanded unit tests for SubtitleChunker      | 136   | 60           | ✓ VERIFIED | 14 test methods (5 existing + 9 new)  |
| `plugins/claude-tts-companion/Tests/CompanionCoreTests/StreamingPipelineTests.swift`      | Integration tests for streaming TTS pipeline | 115   | 50           | ✓ VERIFIED | 5 test methods; real component chain  |

### Key Link Verification

| From                                | To                                                                       | Via                              | Pattern                                                | Status  | Details                                                                |
| ----------------------------------- | ------------------------------------------------------------------------ | -------------------------------- | ------------------------------------------------------ | ------- | ---------------------------------------------------------------------- |
| `WordTimingAlignerTests.swift`      | `WordTimingAligner.swift`                                                | `@testable import CompanionCore` | `WordTimingAligner.`                                   | ✓ WIRED | Import on line 1; used at lines 21, 26, 35, 52+                        |
| `PronunciationProcessorTests.swift` | `PronunciationProcessor.swift`                                           | `@testable import CompanionCore` | `PronunciationProcessor.`                              | ✓ WIRED | Import on line 1; used at lines 7, 12, 17, 22+                         |
| `SubtitleChunkerTests.swift`        | `SubtitleChunker.swift`                                                  | `@testable import CompanionCore` | `SubtitleChunker.`                                     | ✓ WIRED | Import on line 1; used at lines 8, 15, 22, 51+                         |
| `StreamingPipelineTests.swift`      | `SentenceSplitter.swift, SubtitleChunker.swift, WordTimingAligner.swift` | `@testable import CompanionCore` | `SentenceSplitter\|SubtitleChunker\|WordTimingAligner` | ✓ WIRED | All three components called in runPipeline helper and individual tests |

### Data-Flow Trace (Level 4)

Not applicable — test files are not data-rendering components. They directly invoke and assert on pure-function implementations with concrete inputs and expected outputs. No hollow props, no dynamic data rendering.

### Behavioral Spot-Checks

| Behavior                                                 | Command                                                                         | Result                      | Status                |
| -------------------------------------------------------- | ------------------------------------------------------------------------------- | --------------------------- | --------------------- | -------------------- | ------------------------ | --------------------------------------------------- | ------ |
| All Phase 20 test suites pass (59 tests in filter scope) | `cd plugins/claude-tts-companion && swift test --filter "WordTimingAlignerTests | PronunciationProcessorTests | SentenceSplitterTests | SubtitleChunkerTests | StreamingPipelineTests"` | `Test run with 59 tests passed after 0.087 seconds` | ✓ PASS |

### Requirements Coverage

| Requirement | Source Plan   | Description                                                                            | Status      | Evidence                                                                                                             |
| ----------- | ------------- | -------------------------------------------------------------------------------------- | ----------- | -------------------------------------------------------------------------------------------------------------------- |
| TEST-02     | 20-02-PLAN.md | Unit tests for SubtitleChunker (page splitting, line breaks, font sizes)               | ✓ SATISFIED | SubtitleChunkerTests.swift: 14 tests covering page splitting, breakPriority, font size variants, measureWidth        |
| TEST-03     | 20-01-PLAN.md | Unit tests for WordTimingAligner (MToken alignment, onset resolution, hyphen handling) | ✓ SATISFIED | WordTimingAlignerTests.swift: 21 tests covering all three areas                                                      |
| TEST-04     | 20-01-PLAN.md | Unit tests for PronunciationProcessor (override matching, regex boundaries)            | ✓ SATISFIED | PronunciationProcessorTests.swift: 8 tests covering all override variants and word boundary enforcement              |
| TEST-05     | 20-02-PLAN.md | Integration tests for streaming pipeline (mock synthesis, verify chunk sequencing)     | ✓ SATISFIED | StreamingPipelineTests.swift: 5 tests exercising full SentenceSplitter -> SubtitleChunker -> WordTimingAligner chain |

No orphaned requirements — all 4 requirements mapped to Phase 20 in REQUIREMENTS.md are claimed by plans and verified by artifacts.

### Anti-Patterns Found

No anti-patterns detected. Scan of all 5 test files found:

- Zero TODO/FIXME/PLACEHOLDER comments
- Zero empty handler stubs or return-null implementations
- All `#expect(...)` calls use concrete expected values (not just truthiness checks)
- All 4 commit hashes cited in SUMMARY files verified in git history (c04ae760, 8a8ad1d5, f7975d19, 6498ffcd)

### Human Verification Required

None. All verification can be performed programmatically for this phase. The `swift test` run confirms all 59 tests pass in under 0.1 seconds.

### Gaps Summary

No gaps. All must-haves verified at all levels:

- Level 1 (Exists): All 5 test files present on disk
- Level 2 (Substantive): All files exceed minimum line counts (236/80, 48/30, 70/40, 136/60, 115/50); 59 test methods across 5 files
- Level 3 (Wired): All test files import `@testable import CompanionCore` and call real methods on the source types under test
- Level 4 (Data flows): N/A — test files invoke functions with concrete inputs; no rendering pipeline
- Behavioral: `swift test` passes all 59 tests with zero failures

**Notable deviation from plan (documented, not a gap):** SentenceSplitter abbreviation detection only covers single-uppercase-letter patterns (A., B., U., N.), not multi-letter abbreviations like Dr./Mr. Tests document actual behavior — this was discovered during execution and tests were corrected to match the real implementation. The behavior difference is captured in the SUMMARY key-decisions section.

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_Verified: 2026-03-28T02:40:00Z_
_Verifier: Claude (gsd-verifier)_
