WP Theme Test compatibility - Fatal Error: Call to undefined function wp_get_current_user()

[BrechtVds]

Actual Behavior:

• What is the issue? (*) Getting the following site wide error when both WP Theme Test and the Freemius SDK are active: Fatal error: Uncaught Error: Call to undefined function wp_get_current_user() in /app/public/wp-includes/capabilities.php:640

Versions: (*)

• Freemius SDK Version: 2.3.0
• WordPress Version: 5.2.2
• PHP Version: 7.3.2
• WP Theme Test: 1.1.0

Plugin / Theme:

• Name: WP Ultimate Recipe
• Slug: wp-ultimate-recipe
• Freemius ID: 3573

Additional Information:

• Browser Type: (*) Safari
• Browser Version: (*) 12.1
• OS: (*) macOS Mojave 10.14.4
• Stack Traces:

  0 /app/public/wp-content/plugins/wp-theme-test/classes/class.core.php(48): current_user_can('administrator')

  1 /app/public/wp-content/plugins/wp-theme-test/wp-theme-test.php(69): WPTT_Core->has_capability()

  2 /app/public/wp-content/plugins/wp-theme-test/wp-theme-test.php(108): WP_Theme_Test->apply_test_theme()

  3 /app/public/wp-includes/class-wp-hook.php(286): WP_Theme_Test->stylesheet_filter('twentyseventeen')

  4 /app/public/wp-includes/plugin.php(208): WP_Hook->apply_filters('twentyseventeen', Array)

  5 /app/public/wp-includes/theme.php(176): apply_filters('stylesheet', 'twentyseventeen')

  6 /app/public/wp-content/plugins/wp-ultimate-recipe-premium/freemius/start.php(56): get_stylesheet()

  7 /app/public/wp-content/plugins/wp-ultimate-recipe-premium/wp-ultimate-recipe-premium.php(121): require_once('/app/public/wp-...')

  8 /app/public/wp-content/plugins/wp-ultimate-recipe-premium/w in /app/public/wp-includes/capabilities.php on line 640

[vovafeldman]

@BrechtVds thanks for reporting.

From what it looks, based on get_stylesheet() documentation there's no restriction with regards to when the function can be executed. It seems like WP Theme Test adds a filter to 'stylesheet', which eventually triggers current_user_can('administrator') on their end. So unless I'm missing something, they need to patch that logic to test if current_user_can() was already defined before calling it.