<?php

/**

* Test the remove_filter method of WP_Hook

*

* @group hooks

* @covers WP_Hook::remove_filter

*/

class Tests_Hooks_RemoveFilter extends WP_UnitTestCase {

public function test_remove_filter_with_function() {

$callback = '__return_null';

$hook = new WP_Hook();

$hook_name = __FUNCTION__;

$priority = 1;

$accepted_args = 2;

$hook->add_filter( $hook_name, $callback, $priority, $accepted_args );

$hook->remove_filter( $hook_name, $callback, $priority );

$this->check_priority_non_existent( $hook, $priority );

$this->assertArrayNotHasKey( $priority, $hook->callbacks );

}

public function test_remove_filter_with_object() {

$a = new MockAction();

$callback = array( $a, 'action' );

$hook = new WP_Hook();

$hook_name = __FUNCTION__;

$priority = 1;

$accepted_args = 2;

$hook->add_filter( $hook_name, $callback, $priority, $accepted_args );

$hook->remove_filter( $hook_name, $callback, $priority );

$this->check_priority_non_existent( $hook, $priority );

$this->assertArrayNotHasKey( $priority, $hook->callbacks );

}

public function test_remove_filter_with_static_method() {

$callback = array( 'MockAction', 'action' );

$hook = new WP_Hook();

$hook_name = __FUNCTION__;

$priority = 1;

$accepted_args = 2;

$hook->add_filter( $hook_name, $callback, $priority, $accepted_args );

$hook->remove_filter( $hook_name, $callback, $priority );

$this->check_priority_non_existent( $hook, $priority );

$this->assertArrayNotHasKey( $priority, $hook->callbacks );

}

public function test_remove_filters_with_another_at_same_priority() {

$callback_one = '__return_null';

$callback_two = '__return_false';

$hook = new WP_Hook();

$hook_name = __FUNCTION__;

$priority = 1;

$accepted_args = 2;

$hook->add_filter( $hook_name, $callback_one, $priority, $accepted_args );

$hook->add_filter( $hook_name, $callback_two, $priority, $accepted_args );

$hook->remove_filter( $hook_name, $callback_one, $priority );

$this->assertCount( 1, $hook->callbacks[ $priority ] );

$this->check_priority_exists( $hook, $priority, 'Has priority of 2' );

}

public function test_remove_filter_with_another_at_different_priority() {

$callback_one = '__return_null';

$callback_two = '__return_false';

$hook = new WP_Hook();

$hook_name = __FUNCTION__;

$priority = 1;

$accepted_args = 2;

$hook->add_filter( $hook_name, $callback_one, $priority, $accepted_args );

$hook->add_filter( $hook_name, $callback_two, $priority + 1, $accepted_args );

$hook->remove_filter( $hook_name, $callback_one, $priority );

$this->check_priority_non_existent( $hook, $priority );

$this->assertArrayNotHasKey( $priority, $hook->callbacks );

$this->assertCount( 1, $hook->callbacks[ $priority + 1 ] );

$this->check_priority_exists( $hook, $priority + 1, 'Should priority of 3' );

}

protected function check_priority_non_existent( $hook, $priority ) {

$priorities = $this->get_priorities( $hook );

$this->assertNotContains( $priority, $priorities );

}

protected function check_priority_exists( $hook, $priority ) {

$priorities = $this->get_priorities( $hook );

$this->assertContains( $priority, $priorities );

}

protected function get_priorities( $hook ) {

$reflection = new ReflectionClass( $hook );

$reflection_property = $reflection->getProperty( 'priorities' );

if ( PHP_VERSION_ID < 80100 ) {

$reflection_property->setAccessible( true );

}

return $reflection_property->getValue( $hook );

}

}