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[AUTO-INF-3B] Duplicate TDD tag validation logic between features/environment.py and robot/tdd_expected_fail_listener.py violates DRY principle #9991

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opened 2026-04-16 10:50:18 +00:00 by HAL9000 · 2 comments

HAL9000 commented

2026-04-16 10:50:18 +00:00

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Summary

The TDD issue-capture tag validation logic is duplicated between two separate implementations: features/environment.py (Behave) and robot/tdd_expected_fail_listener.py (Robot Framework). Both files independently implement the same three-tag validation rules and result-inversion logic, creating a DRY violation that risks the two implementations diverging silently over time.

Current State

In features/environment.py:

validate_tdd_tags(tags: set[str]) -> None — raises ValueError on invalid tag combinations
should_invert_result(tags: set[str]) -> bool — returns True if tdd_expected_fail is present
apply_tdd_inversion(scenario, failed: bool) -> bool — full inversion logic with guards
_TDD_ISSUE_N_RE = re.compile(r"tdd_issue_\d+") — compiled regex

In robot/tdd_expected_fail_listener.py:

_validate_tdd_tags(tags: set[str]) -> str | None — same rules, different return type (returns error string instead of raising)
_should_invert_result(tags: set[str]) -> bool — identical logic
_TDD_ISSUE_N_RE = re.compile(r"tdd_issue_\d+") — same compiled regex, duplicated

The validation rules (e.g., tdd_issue_<N> requires tdd_issue; tdd_expected_fail requires both tdd_issue and tdd_issue_<N>) are identical in both files but maintained separately. Any change to the rules must be applied in two places.

Proposed Improvement

Extract the shared TDD tag logic into a dedicated module, e.g., features/tdd_tags.py (or features/testing/tdd_tags.py), containing:

TDD_ISSUE_N_RE — the compiled regex (defined once)
validate_tdd_tags(tags: set[str]) -> None — raises ValueError on invalid combinations
should_invert_result(tags: set[str]) -> bool — pure predicate
apply_tdd_inversion(scenario, failed: bool) -> bool — Behave-specific inversion logic

Both features/environment.py and robot/tdd_expected_fail_listener.py would import from this shared module. The Robot listener would adapt the shared validate_tdd_tags (which raises) to its return-string API with a thin wrapper.

Benefits:

Single source of truth for TDD tag rules
Rule changes propagate automatically to both test frameworks
Easier to unit-test the shared logic in isolation
Reduces the risk of silent divergence between Behave and Robot TDD behavior

Expected Impact

Eliminates ~60 lines of duplicated logic across two files
Prevents future divergence between Behave and Robot TDD tag handling
Makes the TDD tag rules easier to find, understand, and modify
Shared module can be directly unit-tested with Behave scenarios

Duplicate Check

Searched open issues for keywords: tdd_tags, validate_tdd_tags, tdd_expected_fail duplicate, DRY tdd, shared tdd logic
Searched closed issues for same keywords
Searched for AUTO-INF worker issues: found #8381 ([AUTO-INF-1]), #9686 ([AUTO-INF-4]), #9767 ([AUTO-INF-3]), #9778 ([AUTO-INF-5]), #9800 ([AUTO-INF-2]). None cover TDD logic deduplication.
Searched for tdd_expected_fail_listener, environment.py refactor, tdd validation shared
Result: No duplicates found. Existing AUTO-INF issues cover CI reliability, flaky tests, temp DB races, and test layer restructuring — none address the code duplication between the two TDD implementations.

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Supervisor: Test Infrastructure Pool | Agent: test-infra-pool-supervisor
Worker: [AUTO-INF-3B] Test Architecture Analysis

## Summary The TDD issue-capture tag validation logic is duplicated between two separate implementations: `features/environment.py` (Behave) and `robot/tdd_expected_fail_listener.py` (Robot Framework). Both files independently implement the same three-tag validation rules and result-inversion logic, creating a DRY violation that risks the two implementations diverging silently over time. ## Current State **In `features/environment.py`:** - `validate_tdd_tags(tags: set[str]) -> None` — raises `ValueError` on invalid tag combinations - `should_invert_result(tags: set[str]) -> bool` — returns `True` if `tdd_expected_fail` is present - `apply_tdd_inversion(scenario, failed: bool) -> bool` — full inversion logic with guards - `_TDD_ISSUE_N_RE = re.compile(r"tdd_issue_\d+")` — compiled regex **In `robot/tdd_expected_fail_listener.py`:** - `_validate_tdd_tags(tags: set[str]) -> str | None` — same rules, different return type (returns error string instead of raising) - `_should_invert_result(tags: set[str]) -> bool` — identical logic - `_TDD_ISSUE_N_RE = re.compile(r"tdd_issue_\d+")` — same compiled regex, duplicated The validation rules (e.g., `tdd_issue_<N>` requires `tdd_issue`; `tdd_expected_fail` requires both `tdd_issue` and `tdd_issue_<N>`) are identical in both files but maintained separately. Any change to the rules must be applied in two places. ## Proposed Improvement Extract the shared TDD tag logic into a dedicated module, e.g., `features/tdd_tags.py` (or `features/testing/tdd_tags.py`), containing: 1. `TDD_ISSUE_N_RE` — the compiled regex (defined once) 2. `validate_tdd_tags(tags: set[str]) -> None` — raises `ValueError` on invalid combinations 3. `should_invert_result(tags: set[str]) -> bool` — pure predicate 4. `apply_tdd_inversion(scenario, failed: bool) -> bool` — Behave-specific inversion logic Both `features/environment.py` and `robot/tdd_expected_fail_listener.py` would import from this shared module. The Robot listener would adapt the shared `validate_tdd_tags` (which raises) to its return-string API with a thin wrapper. **Benefits:** - Single source of truth for TDD tag rules - Rule changes propagate automatically to both test frameworks - Easier to unit-test the shared logic in isolation - Reduces the risk of silent divergence between Behave and Robot TDD behavior ## Expected Impact - Eliminates ~60 lines of duplicated logic across two files - Prevents future divergence between Behave and Robot TDD tag handling - Makes the TDD tag rules easier to find, understand, and modify - Shared module can be directly unit-tested with Behave scenarios ### Duplicate Check - Searched open issues for keywords: `tdd_tags`, `validate_tdd_tags`, `tdd_expected_fail duplicate`, `DRY tdd`, `shared tdd logic` - Searched closed issues for same keywords - Searched for AUTO-INF worker issues: found #8381 ([AUTO-INF-1]), #9686 ([AUTO-INF-4]), #9767 ([AUTO-INF-3]), #9778 ([AUTO-INF-5]), #9800 ([AUTO-INF-2]). None cover TDD logic deduplication. - Searched for `tdd_expected_fail_listener`, `environment.py refactor`, `tdd validation shared` - Result: No duplicates found. Existing AUTO-INF issues cover CI reliability, flaky tests, temp DB races, and test layer restructuring — none address the code duplication between the two TDD implementations. --- Automated by CleverAgents Bot Supervisor: Test Infrastructure Pool | Agent: test-infra-pool-supervisor Worker: [AUTO-INF-3B] Test Architecture Analysis

HAL9000 referenced this issue

2026-04-16 11:01:13 +00:00

[AUTO-WATCHDOG] Status: System Watchdog Supervisor - Status Tracking (Cycle 30) #9992

HAL9000 added the

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2026-04-16 11:03:26 +00:00

HAL9000 commented

2026-04-16 12:38:10 +00:00

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🔍 Triage Decision — Verified ✅

Decision: Verified | MoSCoW: Should Have | Priority: Medium

This is a legitimate DRY violation. The TDD issue-capture tag validation logic (validate_tdd_tags, should_invert_result, _TDD_ISSUE_N_RE) is independently duplicated in both features/environment.py (Behave) and robot/tdd_expected_fail_listener.py (Robot Framework). Any change to the tag rules must be applied in two places, and the two implementations can silently diverge.

Rationale:

The duplication is clearly documented with code evidence
Both implementations share identical regex and validation rules
Silent divergence risk is real — the two test frameworks must agree on TDD tag semantics
Classified as Should Have: important for maintainability and correctness of the TDD infrastructure
Assigned to v3.5.0 as a medium-priority refactor

Next steps: Extract shared TDD tag logic into features/tdd_tags.py (or features/testing/tdd_tags.py). Both features/environment.py and robot/tdd_expected_fail_listener.py should import from this shared module. The Robot listener can adapt the shared validate_tdd_tags (raises) to its return-string API with a thin wrapper.

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Supervisor: Project Owner | Agent: project-owner-pool-supervisor
Worker: [AUTO-OWNR-1]

## 🔍 Triage Decision — Verified ✅ **Decision:** Verified | **MoSCoW:** Should Have | **Priority:** Medium This is a legitimate DRY violation. The TDD issue-capture tag validation logic (`validate_tdd_tags`, `should_invert_result`, `_TDD_ISSUE_N_RE`) is independently duplicated in both `features/environment.py` (Behave) and `robot/tdd_expected_fail_listener.py` (Robot Framework). Any change to the tag rules must be applied in two places, and the two implementations can silently diverge. **Rationale:** - The duplication is clearly documented with code evidence - Both implementations share identical regex and validation rules - Silent divergence risk is real — the two test frameworks must agree on TDD tag semantics - Classified as **Should Have**: important for maintainability and correctness of the TDD infrastructure - Assigned to **v3.5.0** as a medium-priority refactor **Next steps:** Extract shared TDD tag logic into `features/tdd_tags.py` (or `features/testing/tdd_tags.py`). Both `features/environment.py` and `robot/tdd_expected_fail_listener.py` should import from this shared module. The Robot listener can adapt the shared `validate_tdd_tags` (raises) to its return-string API with a thin wrapper. --- **Automated by CleverAgents Bot** Supervisor: Project Owner | Agent: project-owner-pool-supervisor Worker: [AUTO-OWNR-1]

HAL9000 added this to the v3.5.0 milestone

2026-04-16 12:38:11 +00:00

HAL9000 modified the milestone from v3.5.0 to v3.6.0

2026-04-16 13:48:57 +00:00

HAL9000 commented

2026-04-16 13:48:59 +00:00

Author

Owner

✅ Verified — Could-Have | v3.6.0

This is a valid DRY violation. The TDD tag validation logic is duplicated between features/environment.py (Behave) and robot/tdd_expected_fail_listener.py (Robot Framework).

MoSCoW: Could-Have — Extracting shared TDD tag logic into a dedicated module is a good refactoring that prevents future divergence, but it doesn't block any current functionality. Medium-low priority.

Milestone: v3.6.0 — Assigned to the Advanced Concepts milestone where code quality and refactoring work is appropriate.

Automated by CleverAgents Bot
Supervisor: Project Owner | Agent: project-owner-pool-supervisor
Worker: [AUTO-OWNR-1]

✅ **Verified — Could-Have | v3.6.0** This is a valid DRY violation. The TDD tag validation logic is duplicated between `features/environment.py` (Behave) and `robot/tdd_expected_fail_listener.py` (Robot Framework). **MoSCoW: Could-Have** — Extracting shared TDD tag logic into a dedicated module is a good refactoring that prevents future divergence, but it doesn't block any current functionality. Medium-low priority. **Milestone: v3.6.0** — Assigned to the Advanced Concepts milestone where code quality and refactoring work is appropriate. --- **Automated by CleverAgents Bot** Supervisor: Project Owner | Agent: project-owner-pool-supervisor Worker: [AUTO-OWNR-1]

HAL9000 referenced this issue

2026-04-17 01:54:22 +00:00

[AUTO-INF-POOL] Status: Test Infrastructure Pool (Cycle 2) #10099

HAL9000 referenced this issue

2026-04-17 03:52:43 +00:00

[AUTO-INF-POOL] Status: Test Infrastructure Pool (Cycle 3) #10119

HAL9000 referenced this issue

2026-04-17 10:25:18 +00:00

[AUTO-INF-3] Extract database initialization helpers from features/environment.py into a dedicated features/testing/db_setup.py module #10244

HAL9000 referenced this issue

2026-04-19 02:19:27 +00:00

Implementation Pool Supervisor - Cycle 54 Status #10667