The test test_gd_rung_emits_passthrough_featured_and_single_warning forced
the capability to 'gd' via the filter override, causing the orchestrator to
instantiate PRAutoBlogger_Image_Composer_Editor and call compose_variants().
Inside cover_crop(), get_temp_dir() was the first WP function called —
unstubbed, Brain Monkey 2.x threw LogicException on all three PHP versions.
Add the three stubs that ImageComposerEditorTest already uses for the same
code path (same house pattern):
- get_temp_dir → sys_get_temp_dir() . '/'
- wp_get_image_editor → WP_Error (no GD editor in test env)
- is_wp_error → isinstance alias
With wp_get_image_editor returning WP_Error, cover_crop() returns null for
every role → compose_variants() returns [] → the GD rung emits
array_merge($passthrough, []) = only the pass-through featured.
The existing assertions (assertNotEmpty, assertSame 'featured', assertSame
'raw_base_bytes') all fire against a real execution path and cannot pass
trivially — this is the actual degradation-to-passthrough contract.
Assertions are not weakened.
Agent-Session: engineer-prab-maint-fix-20260612
e6761c8fdf