Feature: Manage WordPress extension installation

	@require-wp-5.1.1
	Scenario: Installing Extensions theme or plugin
		Given a WP install

		When I try `wp theme install test-ext --activate`
		Then STDERR should be:
			"""
			Warning: test-ext: Theme not found
			Warning: The 'test-ext' theme could not be found.
			Error: No themes installed.
			"""

		When I try `wp plugin install test-ext --activate`
		Then STDERR should be:
			"""
			Warning: test-ext: Plugin not found.
			Warning: The 'test-ext' plugin could not be found.
			Error: No plugins installed.
			"""