var $cache = NULL;

function setUp() {

parent::setUp();

// create two cache objects with a shared cache dir

// this simulates a typical cache situation, two separate requests interacting

$this->cache =& $this->init_cache();

}

function tearDown() {

parent::tearDown();

$this->flush_cache();

}

function &init_cache() {

$cache = new WP_Object_Cache();

$cache->add_global_groups( array( 'global-cache-test', 'users', 'userlogins', 'usermeta', 'user_meta', 'site-transient', 'site-options', 'site-lookup', 'blog-lookup', 'blog-details', 'rss', 'global-posts', 'blog-id-cache' ) );

return $cache;

}

function test_miss() {

$this->assertEquals(NULL, $this->cache->get(rand_str()));

}

function test_add_get() {

$key = rand_str();

$val = rand_str();

$this->cache->add($key, $val);

$this->assertEquals($val, $this->cache->get($key));

}

function test_add_get_0() {

$key = rand_str();

$val = 0;

// you can store zero in the cache

$this->cache->add($key, $val);

$this->assertEquals($val, $this->cache->get($key));

}

function test_add_get_null() {

$key = rand_str();

$val = null;

$this->assertTrue( $this->cache->add($key, $val) );

// null is converted to empty string

$this->assertEquals( '', $this->cache->get($key) );

}

function test_add() {

$key = rand_str();

$val1 = rand_str();

$val2 = rand_str();

// add $key to the cache

$this->assertTrue($this->cache->add($key, $val1));

$this->assertEquals($val1, $this->cache->get($key));

// $key is in the cache, so reject new calls to add()

$this->assertFalse($this->cache->add($key, $val2));

$this->assertEquals($val1, $this->cache->get($key));

}

function test_replace() {

$key = rand_str();

$val = rand_str();

$val2 = rand_str();

// 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));

$this->assertEquals($val, $this->cache->get($key));

$this->assertTrue($this->cache->replace($key, $val2));

$this->assertEquals($val2, $this->cache->get($key));

}

function test_set() {

$key = rand_str();

$val1 = rand_str();

$val2 = rand_str();

// memcached accepts set() if the key does not exist

$this->assertTrue($this->cache->set($key, $val1));

$this->assertEquals($val1, $this->cache->get($key));

// Second set() with same key should be allowed

$this->assertTrue($this->cache->set($key, $val2));

$this->assertEquals($val2, $this->cache->get($key));

}

function test_flush() {

global $_wp_using_ext_object_cache;

if ( $_wp_using_ext_object_cache )

return;

$key = rand_str();

$val = rand_str();

$this->cache->add($key, $val);

// item is visible to both cache objects

$this->assertEquals($val, $this->cache->get($key));

$this->cache->flush();

// If there is no value get returns false.

$this->assertFalse($this->cache->get($key));

}

// Make sure objects are cloned going to and from the cache

function test_object_refs() {

$key = rand_str();

$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->assertEquals( 'alpha', $object_b->foo );

$object_b->foo = 'charlie';

$this->assertEquals( 'bravo', $object_a->foo );

$key = rand_str();

$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->assertEquals( 'alpha', $object_b->foo );

$object_b->foo = 'charlie';

$this->assertEquals( 'bravo', $object_a->foo );

}

function test_incr() {

$key = rand_str();

$this->assertFalse( $this->cache->incr( $key ) );

$this->cache->set( $key, 0 );

$this->cache->incr( $key );

$this->assertEquals( 1, $this->cache->get( $key ) );

$this->cache->incr( $key, 2 );

$this->assertEquals( 3, $this->cache->get( $key ) );

}

function test_wp_cache_incr() {

$key = rand_str();

$this->assertFalse( wp_cache_incr( $key ) );

wp_cache_set( $key, 0 );

wp_cache_incr( $key );

$this->assertEquals( 1, wp_cache_get( $key ) );

wp_cache_incr( $key, 2 );

$this->assertEquals( 3, wp_cache_get( $key ) );

}

function test_decr() {

$key = rand_str();

$this->assertFalse( $this->cache->decr( $key ) );

$this->cache->set( $key, 0 );

$this->cache->decr( $key );

$this->assertEquals( 0, $this->cache->get( $key ) );

$this->cache->set( $key, 3 );

$this->cache->decr( $key );

$this->assertEquals( 2, $this->cache->get( $key ) );

$this->cache->decr( $key, 2 );

$this->assertEquals( 0, $this->cache->get( $key ) );

}

/**

* @group 21327

*/

function test_wp_cache_decr() {

$key = rand_str();

$this->assertFalse( wp_cache_decr( $key ) );

wp_cache_set( $key, 0 );

wp_cache_decr( $key );

$this->assertEquals( 0, wp_cache_get( $key ) );

wp_cache_set( $key, 3 );

wp_cache_decr( $key );

$this->assertEquals( 2, wp_cache_get( $key ) );

wp_cache_decr( $key, 2 );

$this->assertEquals( 0, wp_cache_get( $key ) );

}

function test_delete() {

$key = rand_str();

$val = rand_str();

// Verify set

$this->assertTrue( $this->cache->set( $key, $val ) );

$this->assertEquals( $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') );

}

function test_wp_cache_delete() {

$key = rand_str();

$val = rand_str();

// Verify set

$this->assertTrue( wp_cache_set( $key, $val ) );

$this->assertEquals( $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') );

}

function test_switch_to_blog() {

if ( ! method_exists( $this->cache, 'switch_to_blog' ) )

return;

$key = rand_str();

$val = rand_str();

$val2 = rand_str();

if ( ! is_multisite() ) {

// Single site ingnores switch_to_blog().

$this->assertTrue( $this->cache->set( $key, $val ) );

$this->assertEquals( $val, $this->cache->get( $key ) );

$this->cache->switch_to_blog( 999 );

$this->assertEquals( $val, $this->cache->get( $key ) );

$this->assertTrue( $this->cache->set( $key, $val2 ) );

$this->assertEquals( $val2, $this->cache->get( $key ) );

$this->cache->switch_to_blog( get_current_blog_id() );

$this->assertEquals( $val2, $this->cache->get( $key ) );

} else {

// Multisite should have separate per-blog caches

$this->assertTrue( $this->cache->set( $key, $val ) );

$this->assertEquals( $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->assertEquals( $val2, $this->cache->get( $key ) );

$this->cache->switch_to_blog( get_current_blog_id() );

$this->assertEquals( $val, $this->cache->get( $key ) );

$this->cache->switch_to_blog( 999 );

$this->assertEquals( $val2, $this->cache->get( $key ) );

$this->cache->switch_to_blog( get_current_blog_id() );

$this->assertEquals( $val, $this->cache->get( $key ) );

}

// Global group

$this->assertTrue( $this->cache->set( $key, $val, 'global-cache-test' ) );

$this->assertEquals( $val, $this->cache->get( $key, 'global-cache-test' ) );

$this->cache->switch_to_blog( 999 );

$this->assertEquals( $val, $this->cache->get( $key, 'global-cache-test' ) );

$this->assertTrue( $this->cache->set( $key, $val2, 'global-cache-test' ) );

$this->assertEquals( $val2, $this->cache->get( $key, 'global-cache-test' ) );

$this->cache->switch_to_blog( get_current_blog_id() );

$this->assertEquals( $val2, $this->cache->get( $key, 'global-cache-test' ) );

}

function test_wp_cache_init() {

$new_blank_cache_object = new WP_Object_Cache();

wp_cache_init();

global $wp_object_cache;

$this->assertEquals( $wp_object_cache, $new_blank_cache_object );

}

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->assertEquals( $val1, wp_cache_get( $key ) );

// Replace the value and verify

wp_cache_replace( $key, $val2 );

$this->assertEquals( $val2, wp_cache_get( $key ) );

// Non-existant 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 ) );

}