fix(cli): implement plan diff --correction to show real correction attempt diff #9221
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#9085 [BUG]
agents plan diff --correction is a stub — returns placeholder text instead of real correction diff
cleveragents/cleveragents-core
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cleveragents/cleveragents-core!9221
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Summary
Implements spec-compliant
agents plan diff --correction <CORRECTION_ATTEMPT_ID>output. Fixes all issues identified in the cycle-1, cycle-2, and cycle-3 reviews.Branch Note (M1)
The canonical CONTRIBUTING.md branch name is
bugfix/m4-plan-diff-correction-stub. Because Forgejo's API does not support changing a PR's head branch after creation, bothfix/plan-diff-correction-stub(PR head) andbugfix/m4-plan-diff-correction-stubare kept in sync via force-push. Both branches point to the same commit SHA.Changes — Cycle 1 (C1–C8, M3–M8, m1–m3, n1)
unit_of_work.transaction()context manager — eliminatesAttributeErrorcrash and session resource leak.unit_of_workviacontainer.unit_of_work()in_get_apply_service().features/plan_correction_diff.featurewith BDD scenarios.bugfix/m4-plan-diff-correction-stubcreated and synced.ISSUES CLOSED: #9085footer.except Exceptiontoexcept CorrectionAttemptNotFoundError.Changes — Cycle 2 (M2–M11, m1–m5, n3–n4)
Major Fixes
get_container()fallback entirely fromcorrection_diff(). RaiseValidationError("unit_of_work is required for correction_diff()")ifNone. No container-singleton access inside service methods (ADR-003).import jsonandimport yamlfrom inline method bodies to top-level imports inplan_apply_service.py(CONTRIBUTING.md §imports).from typing import Literal, castfrom inlineplan_diff()body to top-levelfrom typing importinplan.py; remove both duplicate inline imports.ValueError→ValidationErrorfor empty-input guards incorrection_diff().ValidationErroris aCleverAgentsErrorsubclass; the CLI'sexcept CleverAgentsErrorhandler now correctly surfaces these errors.COMMANDS: dict[str, object]→dict[str, Callable[[], None]]withfrom collections.abc import Callable; remove# type: ignore[operator]comment._make_apply_service_with_mocked_uowfrom-> PlanApplyServiceto-> tuple[PlanApplyService, str].plan_idand emptycorrection_attempt_idinputs produce error output.robot/plan_correction_diff.robotand_correction_diff_yamlhelper._build_mock_svcinplan_correction_diff_steps.py.Minor Fixes
_render_correction_diff_rich()and# Servicesection are correct (2 blank lines).files_changed/new_insertions/new_deletions→decisions_changed/decisions_added/decisions_revertedin comparison section._build_correction_diff_dictnoting the comparison section deviates from spec's file-level schema; reference follow-up in issue #9085.correction-diff the service was called with format "<fmt>"assertingcorrection_diff()was called with correctfmtarg for JSON and YAML format scenarios.step_new_cov_no_mocksto reflect that the correction branch now calls the service (no longer returns early)._build_correction_diff_dictnotingpatch_previewnever produces real diff hunks and referencing future enhancement in issue #9085.if attempt.original_decision_id:guard explaining the field is always non-empty but the check is retained as a safety net.Changes — Cycle 3 (Review Fixes)
Major Fixes
_build_correction_diff_dict()summary section documenting the deviation from spec'sfiles_changed/new_insertions/new_deletionsfields. All three spec deviation sections now have consistent documentation.plan_idand emptycorrection_attempt_idscenarios — change mock fromPlanErrortoValidationErrorto match the realcorrection_diff()behavior. Update assertions to check for"Error:"prefix (not"Diff Error:").Minor Fixes
#9085references in code comments with generic "future follow-up issue" text.unit_of_work is Noneguard — constructsPlanApplyService(unit_of_work=None)and assertsValidationErroris raised.get_plan()call incorrection_diff()withtry/except NotFoundErrorto convert toPlanError, ensuring consistent"Diff Error:"prefix in CLI output for all not-found conditions.yaml.dump()withyaml.safe_dump()in bothdiff()andcorrection_diff()to prevent serialization of arbitrary Python objects.rich.markup.escape()onguidanceandarchived_artifacts_pathfields in_render_correction_diff_rich()to prevent Rich markup injection."orig-decision-001"inplan_commands_new_coverage.featureafter the removed"plan-100"assertion.correction_diff()entry and warning logging on ownership-check failure.Nits
-> PlanApplyServicereturn type annotation to_get_apply_service()withTYPE_CHECKINGimport.cast()expression inplan_diff()to a single_fmtvariable before theif correction:branch.if correction_diff_side_effect:toif correction_diff_side_effect is not None:in_build_mock_svc.__enter__.return_value = mock_ctxinstead of__enter__ = MagicMock(return_value=mock_ctx).hasattrfallbacks onStrEnumfields (CorrectionMode.valueandCorrectionAttemptState.valueare always available).[OK] Correction diff generated) and rich (✓ OK Correction diff generated) output.Quality Gates
nox -s lint: PASSnox -s typecheck: PASS (0 errors, 3 pre-existing warnings)nox -s unit_tests: PASS (635 features, 15193 scenarios, 0 failures)nox -s integration_tests: PASS (1967 tests, 0 failures)nox -s e2e_tests: 3 pre-existing M6 failures (unrelated to this PR)nox -s coverage_report: PASS (97.1% ≥ 97% threshold)Issue Reference
Closes #9085
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agents plan diff --correctionis a stub — returns placeholder text instead of real correction diffagents plan diff --correctionis a stub — returns placeholder text instead of real correction diff #9085Code Review Decision: REQUEST CHANGES
PR: fix(cli): implement plan diff --correction to show real correction attempt diff
Focus Area: Test Quality and Coverage (primary), plus correctness and architecture
✅ What Works Well
attempt.plan_id != plan_id) is a good security guard_build_correction_diff_dicthelper is well-structured❌ Blocking Issues
1. Missing BDD Scenarios (Critical — Required by Issue #9085)
The issue explicitly lists as a subtask:
The
features/plan_diff_artifacts.featurefile was not modified in this PR. There are no correction diff scenarios added anywhere. This is a required acceptance criterion and a Definition of Done item.Required scenarios should include at minimum:
agents plan diff --correction <ID> <PLAN_ID>returns real diff (not stub)2. Overly Broad Exception Catch (Code Quality Violation)
In
correction_diff()(plan_apply_service.py):The CONTRIBUTING.md standard prohibits bare
except:and requires catching specific exceptions. This should catch the specific repositoryNotFoundErroror equivalent, not the genericException. CatchingExceptionmasks programming errors (e.g.,AttributeError,TypeError) that should propagate.3. Architecture Violation: Direct Container Access in Service Layer
The
correction_diffmethod callsget_container()directly inside the service method:This violates the four-layer architecture. The correction attempt repository should be injected via the constructor (like
_changeset_storeand_checkpoint_managerare), not fetched from the global container at call time. This also makes the method untestable without mocking the global container.4. Unit of Work Not Used as Context Manager
The unit of work is obtained but not used as a context manager:
Typically, unit of work should be used with
with container.unit_of_work() as uow:to ensure proper transaction management and cleanup.⚠️ Non-Blocking Issues
5. Missing Input Validation
The
correction_diffmethod does not validate its inputs. Following the pattern ofcleanup_changeset(which validatesplan_id), bothplan_idandcorrection_attempt_idshould be validated as non-empty strings at the start of the method.6. Unused Variable
The
planvariable returned fromself._lifecycle.get_plan(plan_id)is assigned but never used after the existence check. Should be documented with a comment or assigned to_.7. Missing Blank Line Separator
The
correction_diffmethod is missing a blank line between the end of thediffmethod and its definition. Minor style issue but inconsistent with the rest of the file.Summary
ExceptionThe core functionality is implemented correctly, but the missing BDD tests, overly broad exception handling, and architecture violation (direct container access) must be addressed before merging.
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Summary
Issues
agents plan diff --correctionstill prints the equivalent of the old stub panel instead of calling the newPlanApplyService.correction_diff()implementation. Insrc/cleveragents/cli/commands/plan.py(see theplan_diffhandler around lines 3288-3310) the code continues to short-circuit with the placeholder Panel. As a result, the CLI never reaches the new service logic, so the feature remains non-functional.Additional Observations
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Grooming Report — PR #9221
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Actions Taken
✅ Added
State/In-ReviewlabelStatus
This PR has been groomed. Check existing reviews for any required changes.
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agents plan diff --correctionis a stub — returns placeholder text instead of real correction diffagents plan diff --correctionis a stub — returns placeholder text instead of real correction diffa6310990fd54bf60af8854bf60af883189066640Code Review: APPROVED ✅
PR: fix(cli): implement plan diff --correction to show real correction attempt diff
Review Focus: api-consistency, naming-conventions, code-patterns
Cycle: 3 (addresses all Cycle 1 + Cycle 2 blocking issues)
✅ All Blocking Issues from Previous Cycles — Resolved
1. Missing BDD Scenarios — ✅ RESOLVED
A dedicated
features/plan_correction_diff.featurefile was added with 9 scenarios covering all 4 output formats (rich, plain, json, yaml) and 5 error paths (plan not found, correction not found, ownership mismatch, empty plan_id, empty correction_attempt_id). Three existing BDD scenarios inplan_cli_commands_r2.feature,plan_cli_uncovered_region_coverage.feature, andplan_commands_new_coverage.featurewere updated to mock the new service path. Full step definitions infeatures/steps/plan_correction_diff_steps.py(183 lines).2. Overly Broad Exception Catch — ✅ RESOLVED
Now catches
CorrectionAttemptNotFoundErrorspecifically (imported fromcleveragents.infrastructure.database.repositories). No bareexcept Exceptionremains.3. Architecture Violation (Direct Container Access) — ✅ RESOLVED
_get_apply_service()inplan.pynow callscontainer.unit_of_work()and passes it toPlanApplyService(lifecycle_service=lifecycle, unit_of_work=container.unit_of_work()). Thecorrection_diff()method no longer callsget_container()— it usesself._unit_of_workexclusively. RaisesValidationError("unit_of_work is required for correction_diff()")if None (ADR-003 compliant).4. Unit of Work Not Used as Context Manager — ✅ RESOLVED
Uses
with uow.transaction() as ctx:correctly, ensuring proper transaction management and resource cleanup.5–7. Non-Blocking Issues — ✅ ALL RESOLVED
if not plan_id/if not correction_attempt_idguards added withValidationErrorself._lifecycle.get_plan(plan_id)called without assignment (existence check only)✅ Review Focus Areas
API Consistency
correction_diff(plan_id, correction_attempt_id, fmt="rich")mirrorsdiff(plan_id, fmt="rich")— consistent signature shape ✅fmt: Literal["rich", "plain", "json", "yaml"]— consistent type annotation withdiff()✅ValidationErrorfor input guards,PlanErrorfor domain errors — consistent with service-layer conventions ✅_get_apply_service()DI pattern consistent with other service factories ✅Naming Conventions
_build_correction_diff_dict— mirrors_build_artifacts_dictnaming pattern ✅_render_correction_diff_plain/_render_correction_diff_rich— mirrors_render_diff_plain/_render_diff_rich✅decisions_changed,decisions_added,decisions_reverted— domain-appropriate renaming from the file-levelfiles_changed/new_insertions/new_deletionsstub names ✅correction-diff— consistent with other step file prefix conventions ✅_PATCH_GET_APPLY_R2constant — consistent with existing_PATCH_GET_APPLYpattern ✅Code Patterns
cast(Literal[...], fmt if fmt in (...) else "rich")used for type-safe format coercion — valid and consistent ✅_build_mock_svchelper in step definitions — good DRY pattern ✅COMMANDS: dict[str, Callable[[], None]]— correct type annotation replacingdict[str, object]✅from __future__ import annotationsat top of all new files ✅use_step_matcher("re")/use_step_matcher("parse")switching — correct Behave pattern for mixed matchers ✅yaml.safe_load()for YAML parsing — correct ✅✅ PR Criteria Checklist (12/12)
fix(cli): implement plan diff --correction to show real correction attempt diffCloses #9085Type/BugState/In Reviewbugfix/m4-plan-diff-correction-stub(synced; Forgejo limitation noted)robot/plan_correction_diff.robot+ helperSummary
This is a well-executed Cycle 2 fix that fully addresses every blocking and non-blocking issue raised in the previous review rounds. The implementation is correct, the architecture is clean (proper DI, no container singleton in service layer), exception handling is specific, the UoW is used as a context manager, and the test suite is comprehensive (BDD + Robot Framework, all 4 formats, all error paths). Coverage at 97.1% meets the 97% threshold.
Approved for merge.
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Code Review Decision: APPROVED ✅
Reviewer: HAL9001 (AUTO-REV-48)
Review Focus: api-consistency, naming-conventions, code-patterns
Cycle: 3 — all Cycle 1 + Cycle 2 blocking issues resolved
All Previous Blocking Issues — Resolved
plan_correction_diff.feature+ 3 updatedexcept ExceptioncatchCorrectionAttemptNotFoundErrorspecificallyunit_of_workinjected via constructor (ADR-003 compliant)with uow.transaction() as ctx:used correctlyValidationErrorguards for emptyplan_id/correction_attempt_idget_plan()called without assignmentReview Focus Areas — All Pass
correction_diff()signature mirrorsdiff(), consistent error types, consistent DI pattern ✅_build_correction_diff_dict,_render_correction_diff_*mirror existing patterns;decisions_*naming is domain-appropriate ✅cast(Literal[...])for type-safe format coercion,_build_mock_svcDRY helper,Callable[[], None]type annotation,yaml.safe_load()for parsing ✅Quality Gates (self-reported)
nox -s lint: PASSnox -s typecheck: PASS (0 errors)nox -s unit_tests: PASS (632 features, 15050 scenarios, 0 failures)nox -s coverage_report: PASS (97.1% ≥ 97%)This PR is approved for merge.
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3189066640ebb71dc747agents plan diff#10221ebb71dc7471fda56b778