test(checkout): write unit tests for Checkout class

[superdav42]

Task t453

Write unit tests for the Checkout class (inc/checkout/class-checkout.php).

Current coverage: 7.9% (960 uncovered statements)
Estimated effort: ~6h

Acceptance Criteria

• PHPUnit test file created covering the Checkout class
• Coverage for inc/checkout/class-checkout.php increases to ≥60%
• All new tests pass in CI
• No regressions in existing test suite

Context

Part of the ongoing test coverage improvement initiative for Ultimate Multisite.

[superdav42]

Worker Watchdog Kill

Reason: Worker process became idle (CPU below 5% for 300s) — likely completed or hit the OpenCode idle-state bug.

Runtime: 32m 9s

Diagnostic tail: session="Issue #555: test(checkout): write unit tests for Checkout class"; recent_messages=0; newest_part_age=0s; tail=text:""/full-loop Implement issue #555 (#555) -- Write PHPUn..."

This issue has been re-labeled status:available for re-dispatch. The next pulse or manual dispatch will pick it up.

Retry guidance: Post a blocker update describing a changed plan (or newly unblocked dependency), then move the issue back to status:available before re-dispatch.

Automated by worker-watchdog.sh (t1419)

[superdav42]

Worker Watchdog Kill

Reason: Worker process became idle (CPU below 5% for 300s) — likely completed or hit the OpenCode idle-state bug.

Runtime: 32m 9s

Diagnostic tail: session="Issue #555: test(checkout): write unit tests for Checkout class"; recent_messages=0; newest_part_age=0s; tail=text:""/full-loop Implement issue #555 (#555) -- Write PHPUn..."

This issue has been re-labeled status:available for re-dispatch. The next pulse or manual dispatch will pick it up.

Retry guidance: Post a blocker update describing a changed plan (or newly unblocked dependency), then move the issue back to status:available before re-dispatch.

Automated by worker-watchdog.sh (t1419)

[superdav42]

Worker Watchdog Kill

Reason: Worker process became idle (CPU below 5% for 300s) — likely completed or hit the OpenCode idle-state bug.

Runtime: 32m 9s

Diagnostic tail: session="Issue #555: test(checkout): write unit tests for Checkout class"; recent_messages=0; newest_part_age=0s; tail=text:""/full-loop Implement issue #555 (#555) -- Write PHPUn..."

This issue has been re-labeled status:available for re-dispatch. The next pulse or manual dispatch will pick it up.

Retry guidance: Post a blocker update describing a changed plan (or newly unblocked dependency), then move the issue back to status:available before re-dispatch.

Automated by worker-watchdog.sh (t1419)

[superdav42]

Dispatching worker.

• aidevops.sh: v3.1.425
• Model: sonnet (anthropic/claude-sonnet-4-6)
• Branch: feature/t453-checkout-coverage (existing orphan worktree at /home/dave/Git/ultimate-multisite.feature-t453-checkout-coverage, 1 uncommitted file)
• Scope: Write unit tests for Checkout class
• Attempt: 1 of 1
• Direction: Reuse existing orphan worktree. Check uncommitted file for prior work, then write/complete tests.

[superdav42]

Dispatching worker.

• aidevops.sh: v3.1.425
• Model: sonnet (anthropic/claude-sonnet-4-6)
• Branch: feature/t453-checkout-coverage (existing orphan worktree with partial work)
• Scope: Complete Checkout unit tests — Checkout_Test.php has modifications in worktree
• Attempt: 3 of 3 (prior 2 kills were OpenCode idle-state watchdog, not capability failures)
• Direction: Worktree at /home/dave/Git/ultimate-multisite.feature-t453-checkout-coverage — commit existing changes and complete test coverage