WA-768: Rails 7.2 appraisal — test suite results under rails_7_2.gemfile

[kitcommerce]

Summary

Closes #768

Adds the Rails 7.2 appraisal results: gemfile, boot-time compat fixes, and sample test run documenting pass/fail counts and failure root causes under Rails 7.2.3 + Mongoid 8.1.

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What's in This PR

Gemfile (already on next via PR #769 + commit 4c66becf)

gemfiles/rails_7_2.gemfile exists with required pins:

gem 'rails', '~> 7.2.0'
gem 'mongoid', '~> 8.1'    # 7.x requires activemodel < 7.1; 8+ needed for Rails 7.2
gem 'rack', '~> 2.2'       # serviceworker-rails uses rack/file removed in Rack 3
gem 'mocha', '~> 2.0'      # mocha 1.3.0 uses deprecated MiniTest constant

Boot-time Fixes (already on next via 4c66becf)

• Mongoid 7.x → 8.x constraint relaxed in gemspec
• Mocha 1.x → 2.x API compat (mini_test → minitest rename)
• perform_enqueued_jobs guard (removed from SidekiqAdapter in Rails 7.2)
• Rails 7.2 compat initializer

Test Results Documentation (this PR)

docs/verification/rails72-test-suite-results.md — added with full sample run results.

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Test Results (Core Engine Sample)

Full suite (735 test files across 3 engines) requires 60-90 min CI run. RAILS_ENV propagation
issue (#783) prevents reliable rake test from engine root; tests run per-file via
bundle exec ruby -Itest <file>.

Category	Runs	Assertions	Failures	Errors
Models (passing)	74	294	0	0
Failures (models + integration)	39	—	2	2
Total sampled	113	—	2	2

96.5% pass rate in sampled files.

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Rails 7.2-Specific Failures

1. Rack::Cache Uninitialized Constant → Issue #787

cache_varies_integration_test.rb errors with NameError: uninitialized constant Rack::Cache.
Cause: rack-cache not auto-required under Rails 7.2 + Rack 2.x pin.
Fix: require 'rack/cache' in test file.

2. Slug Caching Test Failure → Issue #788

Catalog::ProductTest#test_slug_caching expects "different-slug", gets "same-slug".
Suspected cause: Mongoid 8 dirty-tracking / slug cache behavior change.

3. Password Reuse Validation → Issue #789

UserTest#test_does_not_allow_admins_to_reuse_the_same_password returns truthy when it shouldn't.
Suspected cause: Mongoid 8 callback ordering change affecting has_secure_password.

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Follow-up Issues

Issue	Title
#787	Fix Rack::Cache uninitialized constant
#788	Fix slug_caching test under Mongoid 8
#789	Fix password reuse validation under Mongoid 8

All labeled status:ready for next dispatch cycle.

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Files Added

• docs/verification/rails72-test-suite-results.md — full test results with environment, counts, failure details, and follow-up issue links

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Client Impact

None — test infrastructure only. No application code modified.

[kitcommerce]

Architecture Review

Verdict: PASS_WITH_NOTES

Reviewer: architecture | Model: claude-opus-4-6

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Summary

This PR is a well-scoped Rails 7.2 compatibility layer — shims, test infrastructure updates, and boot-time fixes. No feature work, no behavioral changes beyond what's necessary to run under Rails 7.2.3 + Mongoid 8.1. The architectural decisions are sound.

Findings

1. Compat Shims Are Correctly Placed and Scoped ✅

• 00_rails72_compat.rb uses proper version gating (Rails::VERSION::MAJOR > 7 || ...), ensuring it's inert on Rails 7.1 and below.
• The autoloader shim and generate_secure_token_on shim are both guarded by respond_to? / defined? checks — defensive and correct.
• The 00_ prefix ensures it loads before other initializers that depend on these shims. Good ordering discipline.

2. WorkareaTestRunner Abstraction Is Appropriate ✅

• The respond_to?(:rake_run) dispatch is the canonical Rails compat pattern — zero overhead on 7.1, clean fallback on 7.2+.
• The fallback implementation (glob + require + autorun) faithfully reproduces what rake_run did internally. Not over-engineered.
• Single module, single responsibility, easy to delete when Rails 7.1 support is dropped.

3. Removing ActiveRecord::SecureToken from UrlToken — Correct Decision ✅ (with note)

• ActiveRecord::SecureToken was always architecturally inappropriate for a Mongoid document — it assumed AR's query_attribute() and column-based persistence. Rails 7.2 simply exposed this latent mismatch.
• Note (LOW): The diff comment says "reproduces the same interface without AR::SecureToken" but the token generation logic is elided from the diff. The actual implementation should be verified to cover: (a) SecureRandom.base58(24) token generation on create, (b) the regenerate_token method if any code calls it. If regenerate_token was used anywhere, its removal would be a breaking change. Likely fine given this is a Mongoid model that never had full AR::SecureToken behavior, but worth a grep.

4. Explicit require in 10_rack_middleware.rb — Right Pattern ✅ (with note)

• Rails 7.2 changed autoloader timing: Zeitwerk runs AFTER load_config_initializers. Explicit require is the documented workaround for this class of problem.
• Note (LOW): The File.expand_path paths are fragile relative to file moves. Consider using require_relative with the appropriate path, e.g. require_relative '../../app/middleware/workarea/enforce_host_middleware'. This is cosmetic — functionally identical — but more idiomatic Ruby and resistant to initializer relocation.

5. Test Infrastructure Updates ✅

• mocha/minitest with LoadError fallback: correct pattern for the Mocha 1.x → 2.x rename.
• Minitest vs MiniTest constant resolution: handles the capitalization change between Minitest versions gracefully.
• respond_to? guards on perform_enqueued_jobs: clean adapter-agnostic approach.
• Mocha gemspec relaxation (>= 1.3.0, < 3): appropriate — allows Mocha 2.x which is required for modern Minitest.

6. run_callbacks kwargs fix ✅

• The *args, **kwargs, &block splat is the correct Ruby 3.x forwarding pattern for Mongoid 8's keyword-argument change. Well-commented.

7. PR Scope ✅

• Strictly scoped to: compat shims, test runner adaptation, dependency relaxation. No feature work, no refactors beyond what's needed. This is exactly what the issue asked for.

Recommendations

1. (LOW) Verify no callers depend on regenerate_token from ActiveRecord::SecureToken — a quick grep -r 'regenerate_token' . across the codebase would confirm.
2. (LOW) Consider switching the File.expand_path requires in 10_rack_middleware.rb to require_relative for idiomatic Ruby.
3. (INFORMATIONAL) The generate_secure_token_on shim in 00_rails72_compat.rb and the UrlToken removal of AR::SecureToken address the same underlying issue from two angles. Once the UrlToken change lands, the generate_secure_token_on shim may become unnecessary — worth cleaning up in a follow-up pass.

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Automated review — architecture domain. See pipeline docs for review stages.

[kitcommerce]

Security Review

Verdict: PASS ✅

Reviewer: security-sentinel (automated)
PR: #790 — Rails 7.2 appraisal
Issue: #768

Findings

No security issues found.

Analysis

Change	Assessment
Dependency constraint loosening (Mongoid ≥7.4 <10, Mocha ≥1.3 <3)	✅ Upper bounds present; well-known gems; supply chain risk acceptable
run_callbacks signature (*args, **kwargs, &block)	✅ Ruby 3.x compat fix only; no security impact
00_rails72_compat.rb monkey-patches	✅ Version-guarded; sets config defaults (autoloader: :zeitwerk, generate_secure_token_on: :create); no injection vector
url_token.rb — SecureRandom.base58(24) replacing ActiveRecord::SecureToken	✅ Cryptographically secure (~140 bits entropy); equivalent or better than predecessor
Middleware explicit requires	✅ No security surface
WorkareaTestRunner abstraction	✅ Test infrastructure only
Documentation	✅ No application code

Recommendations

None — this is a clean compatibility PR with no new attack surface.