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<?php
/**
* @group cache
*/
class Tests_Cache extends WP_UnitTestCase {
public $cache = null;
public function set_up() {
parent::set_up();
$this->cache =& $this->init_cache();
}
public function tear_down() {
$this->flush_cache();
parent::tear_down();
}
private function &init_cache() {
global $wp_object_cache;
$cache_class = get_class( $wp_object_cache );
$cache = new $cache_class();
$cache->add_global_groups( array( 'global-cache-test' ) );
return $cache;
}
/**
* @ticket 56198
*
* @covers WP_Object_Cache::is_valid_key
* @dataProvider data_is_valid_key
*/
public function test_is_valid_key( $key, $valid ) {
if ( wp_using_ext_object_cache() ) {
$this->markTestSkipped( 'This test requires that an external object cache is not in use.' );
}
$val = 'val';
if ( $valid ) {
$this->assertTrue( $this->cache->add( $key, $val ), 'WP_Object_Cache:add() should return true for valid keys.' );
$this->assertSame( $val, $this->cache->get( $key ), 'The retrieved value should match the added value.' );
} else {
$this->setExpectedIncorrectUsage( 'WP_Object_Cache::add' );
$this->assertFalse( $this->cache->add( $key, $val ), 'WP_Object_Cache:add() should return false for invalid keys.' );
}
}
/**
* Data provider for test_is_valid_key().
*
* @return array[] Test parameters {
* @type mixed $key Cache key value.
* @type bool $valid Whether the key should be considered valid.
* }
*/
public function data_is_valid_key() {
return array(
'false' => array( false, false ),
'null' => array( null, false ),
'line break' => array( "\n", false ),
'null character' => array( "\0", false ),
'empty string' => array( '', false ),
'single space' => array( ' ', false ),
'two spaces' => array( ' ', false ),
'float 0' => array( 0.0, false ),
'int 0' => array( 0, true ),
'int 1' => array( 1, true ),
'string 0' => array( '0', true ),
'string' => array( 'key', true ),
);
}
public function test_miss() {
$this->assertFalse( $this->cache->get( 'test_miss' ) );
}
public function test_add_get() {
$key = __FUNCTION__;
$val = 'val';
$this->cache->add( $key, $val );
$this->assertSame( $val, $this->cache->get( $key ) );
}
public function test_add_get_0() {
$key = __FUNCTION__;
$val = 0;
// You can store zero in the cache.
$this->assertTrue( $this->cache->add( $key, $val ) );
$this->assertSame( $val, $this->cache->get( $key ) );
}
/**
* @ticket 20004
*/
public function test_add_get_null() {
$key = __FUNCTION__;
$val = null;
// You can store `null` in the cache.
$this->assertTrue( $this->cache->add( $key, $val ) );
$this->assertSame( $val, $this->cache->get( $key ) );
}
/**
* @ticket 20004
*/
public function test_add_get_false() {
$key = __FUNCTION__;
$val = false;
// You can store `false` in the cache.
$this->assertTrue( $this->cache->add( $key, $val ) );
$this->assertSame( $val, $this->cache->get( $key ) );
}
public function test_add() {
$key = __FUNCTION__;
$val1 = 'val1';
$val2 = 'val2';
// Add $key to the cache.
$this->assertTrue( $this->cache->add( $key, $val1 ) );
$this->assertSame( $val1, $this->cache->get( $key ) );
// $key is in the cache, so reject new calls to add().
$this->assertFalse( $this->cache->add( $key, $val2 ) );
$this->assertSame( $val1, $this->cache->get( $key ) );
}
public function test_replace() {
$key = __FUNCTION__;
$val = 'val1';
$val2 = 'val2';
// memcached rejects replace() if the key does not exist.
$this->assertFalse( $this->cache->replace( $key, $val ) );
$this->assertFalse( $this->cache->get( $key ) );
$this->assertTrue( $this->cache->add( $key, $val ) );
$this->assertSame( $val, $this->cache->get( $key ) );
$this->assertTrue( $this->cache->replace( $key, $val2 ) );
$this->assertSame( $val2, $this->cache->get( $key ) );
}
public function test_wp_cache_replace() {
$key = 'my-key';
$val1 = 'first-val';
$val2 = 'second-val';
$fake_key = 'my-fake-key';
// Save the first value to cache and verify.
wp_cache_set( $key, $val1 );
$this->assertSame( $val1, wp_cache_get( $key ) );
// Replace the value and verify.
wp_cache_replace( $key, $val2 );
$this->assertSame( $val2, wp_cache_get( $key ) );
// Non-existent key should fail.
$this->assertFalse( wp_cache_replace( $fake_key, $val1 ) );
// Make sure $fake_key is not stored.
$this->assertFalse( wp_cache_get( $fake_key ) );
}
public function test_set() {
$key = __FUNCTION__;
$val1 = 'val1';
$val2 = 'val2';
// memcached accepts set() if the key does not exist.
$this->assertTrue( $this->cache->set( $key, $val1 ) );
$this->assertSame( $val1, $this->cache->get( $key ) );
// Second set() with same key should be allowed.
$this->assertTrue( $this->cache->set( $key, $val2 ) );
$this->assertSame( $val2, $this->cache->get( $key ) );
}
public function test_flush() {
if ( wp_using_ext_object_cache() ) {
$this->markTestSkipped( 'This test requires that an external object cache is not in use.' );
}
$key = __FUNCTION__;
$val = 'val';
$this->cache->add( $key, $val );
// Item is visible to both cache objects.
$this->assertSame( $val, $this->cache->get( $key ) );
$this->cache->flush();
// If there is no value get returns false.
$this->assertFalse( $this->cache->get( $key ) );
}
/**
* @ticket 4476
* @ticket 9773
*
* @covers ::wp_cache_flush_group
*/
public function test_wp_cache_flush_group() {
$key = 'my-key';
$val = 'my-val';
wp_cache_set( $key, $val, 'group-test' );
wp_cache_set( $key, $val, 'group-kept' );
$this->assertSame( $val, wp_cache_get( $key, 'group-test' ), 'group-test should contain my-val' );
if ( wp_using_ext_object_cache() ) {
$this->setExpectedIncorrectUsage( 'wp_cache_flush_group' );
}
$results = wp_cache_flush_group( 'group-test' );
if ( wp_using_ext_object_cache() ) {
$this->assertFalse( $results );
} else {
$this->assertTrue( $results );
$this->assertFalse( wp_cache_get( $key, 'group-test' ), 'group-test should return false' );
$this->assertSame( $val, wp_cache_get( $key, 'group-kept' ), 'group-kept should still contain my-val' );
}
}
// Make sure objects are cloned going to and from the cache.
public function test_object_refs() {
$key = __FUNCTION__ . '_1';
$object_a = new stdClass();
$object_a->foo = 'alpha';
$this->cache->set( $key, $object_a );
$object_a->foo = 'bravo';
$object_b = $this->cache->get( $key );
$this->assertSame( 'alpha', $object_b->foo );
$object_b->foo = 'charlie';
$this->assertSame( 'bravo', $object_a->foo );
$key = __FUNCTION__ . '_2';
$object_a = new stdClass();
$object_a->foo = 'alpha';
$this->cache->add( $key, $object_a );
$object_a->foo = 'bravo';
$object_b = $this->cache->get( $key );
$this->assertSame( 'alpha', $object_b->foo );
$object_b->foo = 'charlie';
$this->assertSame( 'bravo', $object_a->foo );
}
public function test_incr() {
$key = __FUNCTION__;
$this->assertFalse( $this->cache->incr( $key ) );
$this->cache->set( $key, 0 );
$this->cache->incr( $key );
$this->assertSame( 1, $this->cache->get( $key ) );
$this->cache->incr( $key, 2 );
$this->assertSame( 3, $this->cache->get( $key ) );
}
public function test_wp_cache_incr() {
$key = __FUNCTION__;
$this->assertFalse( wp_cache_incr( $key ) );
wp_cache_set( $key, 0 );
wp_cache_incr( $key );
$this->assertSame( 1, wp_cache_get( $key ) );
wp_cache_incr( $key, 2 );
$this->assertSame( 3, wp_cache_get( $key ) );
}
public function test_decr() {
$key = __FUNCTION__;
$this->assertFalse( $this->cache->decr( $key ) );
$this->cache->set( $key, 0 );
$this->cache->decr( $key );
$this->assertSame( 0, $this->cache->get( $key ) );
$this->cache->set( $key, 3 );
$this->cache->decr( $key );
$this->assertSame( 2, $this->cache->get( $key ) );
$this->cache->decr( $key, 2 );
$this->assertSame( 0, $this->cache->get( $key ) );
}
/**
* @ticket 21327
*/
public function test_wp_cache_decr() {
$key = __FUNCTION__;
$this->assertFalse( wp_cache_decr( $key ) );
wp_cache_set( $key, 0 );
wp_cache_decr( $key );
$this->assertSame( 0, wp_cache_get( $key ) );
wp_cache_set( $key, 3 );
wp_cache_decr( $key );
$this->assertSame( 2, wp_cache_get( $key ) );
wp_cache_decr( $key, 2 );
$this->assertSame( 0, wp_cache_get( $key ) );
}
public function test_delete() {
$key = __FUNCTION__;
$val = 'val';
// Verify set.
$this->assertTrue( $this->cache->set( $key, $val ) );
$this->assertSame( $val, $this->cache->get( $key ) );
// Verify successful delete.
$this->assertTrue( $this->cache->delete( $key ) );
$this->assertFalse( $this->cache->get( $key ) );
$this->assertFalse( $this->cache->delete( $key, 'default' ) );
}
public function test_wp_cache_delete() {
$key = __FUNCTION__;
$val = 'val';
// Verify set.
$this->assertTrue( wp_cache_set( $key, $val ) );
$this->assertSame( $val, wp_cache_get( $key ) );
// Verify successful delete.
$this->assertTrue( wp_cache_delete( $key ) );
$this->assertFalse( wp_cache_get( $key ) );
// wp_cache_delete() does not have a $force method.
// Delete returns (bool) true when key is not set and $force is true.
// $this->assertTrue( wp_cache_delete( $key, 'default', true ) );
$this->assertFalse( wp_cache_delete( $key, 'default' ) );
}
public function test_switch_to_blog() {
if ( ! method_exists( $this->cache, 'switch_to_blog' ) ) {
$this->markTestSkipped( 'This test requires a switch_to_blog() method on the cache object.' );
}
$key = __FUNCTION__;
$val = 'val1';
$val2 = 'val2';
if ( ! is_multisite() ) {
// Single site ignores switch_to_blog().
$this->assertTrue( $this->cache->set( $key, $val ) );
$this->assertSame( $val, $this->cache->get( $key ) );
$this->cache->switch_to_blog( 999 );
$this->assertSame( $val, $this->cache->get( $key ) );
$this->assertTrue( $this->cache->set( $key, $val2 ) );
$this->assertSame( $val2, $this->cache->get( $key ) );
$this->cache->switch_to_blog( get_current_blog_id() );
$this->assertSame( $val2, $this->cache->get( $key ) );
} else {
// Multisite should have separate per-blog caches.
$this->assertTrue( $this->cache->set( $key, $val ) );
$this->assertSame( $val, $this->cache->get( $key ) );
$this->cache->switch_to_blog( 999 );
$this->assertFalse( $this->cache->get( $key ) );
$this->assertTrue( $this->cache->set( $key, $val2 ) );
$this->assertSame( $val2, $this->cache->get( $key ) );
$this->cache->switch_to_blog( get_current_blog_id() );
$this->assertSame( $val, $this->cache->get( $key ) );
$this->cache->switch_to_blog( 999 );
$this->assertSame( $val2, $this->cache->get( $key ) );
$this->cache->switch_to_blog( get_current_blog_id() );
$this->assertSame( $val, $this->cache->get( $key ) );
}
// Global group.
$this->assertTrue( $this->cache->set( $key, $val, 'global-cache-test' ) );
$this->assertSame( $val, $this->cache->get( $key, 'global-cache-test' ) );
$this->cache->switch_to_blog( 999 );
$this->assertSame( $val, $this->cache->get( $key, 'global-cache-test' ) );
$this->assertTrue( $this->cache->set( $key, $val2, 'global-cache-test' ) );
$this->assertSame( $val2, $this->cache->get( $key, 'global-cache-test' ) );
$this->cache->switch_to_blog( get_current_blog_id() );
$this->assertSame( $val2, $this->cache->get( $key, 'global-cache-test' ) );
}
public function test_wp_cache_init() {
$new_blank_cache_object = new WP_Object_Cache();
wp_cache_init();
global $wp_object_cache;
if ( wp_using_ext_object_cache() ) {
// External caches will contain property values that contain non-matching resource IDs.
$this->assertInstanceOf( 'WP_Object_Cache', $wp_object_cache );
} else {
$this->assertEquals( $wp_object_cache, $new_blank_cache_object );
}
}
/**
* @ticket 54574
*/
public function test_wp_cache_add_multiple() {
$found = wp_cache_add_multiple(
array(
'foo1' => 'bar',
'foo2' => 'bar',
'foo3' => 'bar',
),
'group1'
);
$expected = array(
'foo1' => true,
'foo2' => true,
'foo3' => true,
);
$this->assertSame( $expected, $found );
}
/**
* @ticket 54574
*/
public function test_wp_cache_set_multiple() {
$found = wp_cache_set_multiple(
array(
'foo1' => 'bar',
'foo2' => 'bar',
'foo3' => 'bar',
),
'group1'
);
$expected = array(
'foo1' => true,
'foo2' => true,
'foo3' => true,
);
$this->assertSame( $expected, $found );
}
/**
* @ticket 20875
*/
public function test_wp_cache_get_multiple() {
wp_cache_set( 'foo1', 'bar', 'group1' );
wp_cache_set( 'foo2', 'bar', 'group1' );
wp_cache_set( 'foo1', 'bar', 'group2' );
$found = wp_cache_get_multiple( array( 'foo1', 'foo2', 'foo3' ), 'group1' );
$expected = array(
'foo1' => 'bar',
'foo2' => 'bar',
'foo3' => false,
);
$this->assertSame( $expected, $found );
}
/**
* @ticket 54574
*/
public function test_wp_cache_delete_multiple() {
wp_cache_set( 'foo1', 'bar', 'group1' );
wp_cache_set( 'foo2', 'bar', 'group1' );
wp_cache_set( 'foo3', 'bar', 'group2' );
$found = wp_cache_delete_multiple(
array( 'foo1', 'foo2', 'foo3' ),
'group1'
);
$expected = array(
'foo1' => true,
'foo2' => true,
'foo3' => false,
);
$this->assertSame( $expected, $found );
}
}
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