New Test Suite: Plugin Architecture

[jnealey88]

Summary

Add tests for WordPress plugin lifecycle and architecture - a fundamental skill with zero current coverage.

Current State

• No tests for plugin activation/deactivation hooks
• No plugin settings page tests
• No admin menu registration tests
• No plugin update/migration pattern tests

Proposed Tests

Knowledge Tests

• Plugin header requirements
• Activation hook naming conventions
• Plugin dependencies and version management
• Uninstall vs deactivation best practices

Execution Tests

• register_activation_hook() / register_deactivation_hook()
• Plugin settings page with register_setting() and sanitization
• Admin menu registration (add_menu_page(), add_submenu_page())
• Plugin update/migration patterns
• Admin notices with dismissible functionality

Why This Matters

Plugin development is the most common WordPress development task. Every WordPress developer needs to understand plugin architecture.