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+<?php
+
+class CacheTestCase extends DrupalWebTestCase {
+ protected $default_bin = 'cache';
+ protected $default_cid = 'test_temporary';
+ protected $default_value = 'CacheTest';
+
+ /**
+ * Check whether or not a cache entry exists.
+ *
+ * @param $cid
+ * The cache id.
+ * @param $var
+ * The variable the cache should contain.
+ * @param $bin
+ * The bin the cache item was stored in.
+ * @return
+ * TRUE on pass, FALSE on fail.
+ */
+ protected function checkCacheExists($cid, $var, $bin = NULL) {
+ if ($bin == NULL) {
+ $bin = $this->default_bin;
+ }
+
+ $cache = cache_get($cid, $bin);
+
+ return isset($cache->data) && $cache->data == $var;
+ }
+
+ /**
+ * Assert or a cache entry exists.
+ *
+ * @param $message
+ * Message to display.
+ * @param $var
+ * The variable the cache should contain.
+ * @param $cid
+ * The cache id.
+ * @param $bin
+ * The bin the cache item was stored in.
+ */
+ protected function assertCacheExists($message, $var = NULL, $cid = NULL, $bin = NULL) {
+ if ($bin == NULL) {
+ $bin = $this->default_bin;
+ }
+ if ($cid == NULL) {
+ $cid = $this->default_cid;
+ }
+ if ($var == NULL) {
+ $var = $this->default_value;
+ }
+
+ $this->assertTrue($this->checkCacheExists($cid, $var, $bin), $message);
+ }
+
+ /**
+ * Assert or a cache entry has been removed.
+ *
+ * @param $message
+ * Message to display.
+ * @param $cid
+ * The cache id.
+ * @param $bin
+ * The bin the cache item was stored in.
+ */
+ function assertCacheRemoved($message, $cid = NULL, $bin = NULL) {
+ if ($bin == NULL) {
+ $bin = $this->default_bin;
+ }
+ if ($cid == NULL) {
+ $cid = $this->default_cid;
+ }
+
+ $cache = cache_get($cid, $bin);
+ $this->assertFalse($cache, $message);
+ }
+
+ /**
+ * Perform the general wipe.
+ * @param $bin
+ * The bin to perform the wipe on.
+ */
+ protected function generalWipe($bin = NULL) {
+ if ($bin == NULL) {
+ $bin = $this->default_bin;
+ }
+
+ cache_clear_all(NULL, $bin);
+ }
+
+ /**
+ * Setup the lifetime settings for caching.
+ *
+ * @param $time
+ * The time in seconds the cache should minimal live.
+ */
+ protected function setupLifetime($time) {
+ variable_set('cache_lifetime', $time);
+ variable_set('cache_flush', 0);
+ }
+}
+
+class CacheSavingCase extends CacheTestCase {
+ public static function getInfo() {
+ return array(
+ 'name' => 'Cache saving test',
+ 'description' => 'Check our variables are saved and restored the right way.',
+ 'group' => 'Cache'
+ );
+ }
+
+ /**
+ * Test the saving and restoring of a string.
+ */
+ function testString() {
+ $this->checkVariable($this->randomName(100));
+ }
+
+ /**
+ * Test the saving and restoring of an integer.
+ */
+ function testInteger() {
+ $this->checkVariable(100);
+ }
+
+ /**
+ * Test the saving and restoring of a double.
+ */
+ function testDouble() {
+ $this->checkVariable(1.29);
+ }
+
+ /**
+ * Test the saving and restoring of an array.
+ */
+ function testArray() {
+ $this->checkVariable(array('drupal1', 'drupal2' => 'drupal3', 'drupal4' => array('drupal5', 'drupal6')));
+ }
+
+ /**
+ * Test the saving and restoring of an object.
+ */
+ function testObject() {
+ $test_object = new stdClass();
+ $test_object->test1 = $this->randomName(100);
+ $test_object->test2 = 100;
+ $test_object->test3 = array('drupal1', 'drupal2' => 'drupal3', 'drupal4' => array('drupal5', 'drupal6'));
+
+ cache_set('test_object', $test_object, 'cache');
+ $cache = cache_get('test_object', 'cache');
+ $this->assertTrue(isset($cache->data) && $cache->data == $test_object, 'Object is saved and restored properly.');
+ }
+
+ /**
+ * Check or a variable is stored and restored properly.
+ */
+ function checkVariable($var) {
+ cache_set('test_var', $var, 'cache');
+ $cache = cache_get('test_var', 'cache');
+ $this->assertTrue(isset($cache->data) && $cache->data === $var, format_string('@type is saved and restored properly.', array('@type' => ucfirst(gettype($var)))));
+ }
+
+ /**
+ * Test no empty cids are written in cache table.
+ */
+ function testNoEmptyCids() {
+ $this->drupalGet('user/register');
+ $this->assertFalse(cache_get(''), 'No cache entry is written with an empty cid.');
+ }
+}
+
+/**
+ * Test cache_get_multiple().
+ */
+class CacheGetMultipleUnitTest extends CacheTestCase {
+
+ public static function getInfo() {
+ return array(
+ 'name' => 'Fetching multiple cache items',
+ 'description' => 'Confirm that multiple records are fetched correctly.',
+ 'group' => 'Cache',
+ );
+ }
+
+ function setUp() {
+ $this->default_bin = 'cache_page';
+ parent::setUp();
+ }
+
+ /**
+ * Test cache_get_multiple().
+ */
+ function testCacheMultiple() {
+ $item1 = $this->randomName(10);
+ $item2 = $this->randomName(10);
+ cache_set('item1', $item1, $this->default_bin);
+ cache_set('item2', $item2, $this->default_bin);
+ $this->assertTrue($this->checkCacheExists('item1', $item1), 'Item 1 is cached.');
+ $this->assertTrue($this->checkCacheExists('item2', $item2), 'Item 2 is cached.');
+
+ // Fetch both records from the database with cache_get_multiple().
+ $item_ids = array('item1', 'item2');
+ $items = cache_get_multiple($item_ids, $this->default_bin);
+ $this->assertEqual($items['item1']->data, $item1, 'Item was returned from cache successfully.');
+ $this->assertEqual($items['item2']->data, $item2, 'Item was returned from cache successfully.');
+
+ // Remove one item from the cache.
+ cache_clear_all('item2', $this->default_bin);
+
+ // Confirm that only one item is returned by cache_get_multiple().
+ $item_ids = array('item1', 'item2');
+ $items = cache_get_multiple($item_ids, $this->default_bin);
+ $this->assertEqual($items['item1']->data, $item1, 'Item was returned from cache successfully.');
+ $this->assertFalse(isset($items['item2']), 'Item was not returned from the cache.');
+ $this->assertTrue(count($items) == 1, 'Only valid cache entries returned.');
+ }
+}
+
+/**
+ * Test cache clearing methods.
+ */
+class CacheClearCase extends CacheTestCase {
+ public static function getInfo() {
+ return array(
+ 'name' => 'Cache clear test',
+ 'description' => 'Check our clearing is done the proper way.',
+ 'group' => 'Cache'
+ );
+ }
+
+ function setUp() {
+ $this->default_bin = 'cache_page';
+ $this->default_value = $this->randomName(10);
+
+ parent::setUp();
+ }
+
+ /**
+ * Test clearing using a cid.
+ */
+ function testClearCid() {
+ cache_set('test_cid_clear', $this->default_value, $this->default_bin);
+
+ $this->assertCacheExists(t('Cache was set for clearing cid.'), $this->default_value, 'test_cid_clear');
+ cache_clear_all('test_cid_clear', $this->default_bin);
+
+ $this->assertCacheRemoved(t('Cache was removed after clearing cid.'), 'test_cid_clear');
+
+ cache_set('test_cid_clear1', $this->default_value, $this->default_bin);
+ cache_set('test_cid_clear2', $this->default_value, $this->default_bin);
+ $this->assertTrue($this->checkCacheExists('test_cid_clear1', $this->default_value)
+ && $this->checkCacheExists('test_cid_clear2', $this->default_value),
+ 'Two caches were created for checking cid "*" with wildcard false.');
+ cache_clear_all('*', $this->default_bin);
+ $this->assertTrue($this->checkCacheExists('test_cid_clear1', $this->default_value)
+ && $this->checkCacheExists('test_cid_clear2', $this->default_value),
+ 'Two caches still exists after clearing cid "*" with wildcard false.');
+ }
+
+ /**
+ * Test clearing using wildcard.
+ */
+ function testClearWildcard() {
+ cache_set('test_cid_clear1', $this->default_value, $this->default_bin);
+ cache_set('test_cid_clear2', $this->default_value, $this->default_bin);
+ $this->assertTrue($this->checkCacheExists('test_cid_clear1', $this->default_value)
+ && $this->checkCacheExists('test_cid_clear2', $this->default_value),
+ 'Two caches were created for checking cid "*" with wildcard true.');
+ cache_clear_all('*', $this->default_bin, TRUE);
+ $this->assertFalse($this->checkCacheExists('test_cid_clear1', $this->default_value)
+ || $this->checkCacheExists('test_cid_clear2', $this->default_value),
+ 'Two caches removed after clearing cid "*" with wildcard true.');
+
+ cache_set('test_cid_clear1', $this->default_value, $this->default_bin);
+ cache_set('test_cid_clear2', $this->default_value, $this->default_bin);
+ $this->assertTrue($this->checkCacheExists('test_cid_clear1', $this->default_value)
+ && $this->checkCacheExists('test_cid_clear2', $this->default_value),
+ 'Two caches were created for checking cid substring with wildcard true.');
+ cache_clear_all('test_', $this->default_bin, TRUE);
+ $this->assertFalse($this->checkCacheExists('test_cid_clear1', $this->default_value)
+ || $this->checkCacheExists('test_cid_clear2', $this->default_value),
+ 'Two caches removed after clearing cid substring with wildcard true.');
+ }
+
+ /**
+ * Test clearing using an array.
+ */
+ function testClearArray() {
+ // Create three cache entries.
+ cache_set('test_cid_clear1', $this->default_value, $this->default_bin);
+ cache_set('test_cid_clear2', $this->default_value, $this->default_bin);
+ cache_set('test_cid_clear3', $this->default_value, $this->default_bin);
+ $this->assertTrue($this->checkCacheExists('test_cid_clear1', $this->default_value)
+ && $this->checkCacheExists('test_cid_clear2', $this->default_value)
+ && $this->checkCacheExists('test_cid_clear3', $this->default_value),
+ 'Three cache entries were created.');
+
+ // Clear two entries using an array.
+ cache_clear_all(array('test_cid_clear1', 'test_cid_clear2'), $this->default_bin);
+ $this->assertFalse($this->checkCacheExists('test_cid_clear1', $this->default_value)
+ || $this->checkCacheExists('test_cid_clear2', $this->default_value),
+ 'Two cache entries removed after clearing with an array.');
+
+ $this->assertTrue($this->checkCacheExists('test_cid_clear3', $this->default_value),
+ 'Entry was not cleared from the cache');
+
+ // Set the cache clear threshold to 2 to confirm that the full bin is cleared
+ // when the threshold is exceeded.
+ variable_set('cache_clear_threshold', 2);
+ cache_set('test_cid_clear1', $this->default_value, $this->default_bin);
+ cache_set('test_cid_clear2', $this->default_value, $this->default_bin);
+ $this->assertTrue($this->checkCacheExists('test_cid_clear1', $this->default_value)
+ && $this->checkCacheExists('test_cid_clear2', $this->default_value),
+ 'Two cache entries were created.');
+ cache_clear_all(array('test_cid_clear1', 'test_cid_clear2', 'test_cid_clear3'), $this->default_bin);
+ $this->assertFalse($this->checkCacheExists('test_cid_clear1', $this->default_value)
+ || $this->checkCacheExists('test_cid_clear2', $this->default_value)
+ || $this->checkCacheExists('test_cid_clear3', $this->default_value),
+ 'All cache entries removed when the array exceeded the cache clear threshold.');
+ }
+
+ /**
+ * Test drupal_flush_all_caches().
+ */
+ function testFlushAllCaches() {
+ // Create cache entries for each flushed cache bin.
+ $bins = array('cache', 'cache_filter', 'cache_page', 'cache_boostrap', 'cache_path');
+ $bins = array_merge(module_invoke_all('flush_caches'), $bins);
+ foreach ($bins as $id => $bin) {
+ $id = 'test_cid_clear' . $id;
+ cache_set($id, $this->default_value, $bin);
+ }
+
+ // Remove all caches then make sure that they are cleared.
+ drupal_flush_all_caches();
+
+ foreach ($bins as $id => $bin) {
+ $id = 'test_cid_clear' . $id;
+ $this->assertFalse($this->checkCacheExists($id, $this->default_value, $bin), format_string('All cache entries removed from @bin.', array('@bin' => $bin)));
+ }
+ }
+
+ /**
+ * Test DrupalDatabaseCache::isValidBin().
+ */
+ function testIsValidBin() {
+ // Retrieve existing cache bins.
+ $valid_bins = array('cache', 'cache_filter', 'cache_page', 'cache_boostrap', 'cache_path');
+ $valid_bins = array_merge(module_invoke_all('flush_caches'), $valid_bins);
+ foreach ($valid_bins as $id => $bin) {
+ $cache = _cache_get_object($bin);
+ if ($cache instanceof DrupalDatabaseCache) {
+ $this->assertTrue($cache->isValidBin(), format_string('Cache bin @bin is valid.', array('@bin' => $bin)));
+ }
+ }
+
+ // Check for non-cache tables and invalid bins.
+ $invalid_bins = array('block', 'filter', 'missing_table', $this->randomName());
+ foreach ($invalid_bins as $id => $bin) {
+ $cache = _cache_get_object($bin);
+ if ($cache instanceof DrupalDatabaseCache) {
+ $this->assertFalse($cache->isValidBin(), format_string('Cache bin @bin is not valid.', array('@bin' => $bin)));
+ }
+ }
+ }
+
+ /**
+ * Test minimum cache lifetime.
+ */
+ function testMinimumCacheLifetime() {
+ // Set a minimum/maximum cache lifetime.
+ $this->setupLifetime(300);
+ // Login as a newly-created user.
+ $account = $this->drupalCreateUser(array());
+ $this->drupalLogin($account);
+
+ // Set two cache objects in different bins.
+ $data = $this->randomName(100);
+ cache_set($data, $data, 'cache', CACHE_TEMPORARY);
+ $cached = cache_get($data);
+ $this->assertTrue(isset($cached->data) && $cached->data === $data, 'Cached item retrieved.');
+ cache_set($data, $data, 'cache_page', CACHE_TEMPORARY);
+
+ // Expire temporary items in the 'page' bin.
+ cache_clear_all(NULL, 'cache_page');
+
+ // Since the database cache uses REQUEST_TIME, set the $_SESSION variable
+ // manually to force it to the current time.
+ $_SESSION['cache_expiration']['cache_page'] = time();
+
+ // Items in the default cache bin should not be expired.
+ $cached = cache_get($data);
+ $this->assertTrue(isset($cached->data) && $cached->data == $data, 'Cached item retrieved');
+
+ // Despite the minimum cache lifetime, the item in the 'page' bin should
+ // be invalidated for the current user.
+ $cached = cache_get($data, 'cache_page');
+ $this->assertFalse($cached, 'Cached item was invalidated');
+ }
+}
+
+/**
+ * Test cache_is_empty() function.
+ */
+class CacheIsEmptyCase extends CacheTestCase {
+ public static function getInfo() {
+ return array(
+ 'name' => 'Cache emptiness test',
+ 'description' => 'Check if a cache bin is empty after performing clear operations.',
+ 'group' => 'Cache'
+ );
+ }
+
+ function setUp() {
+ $this->default_bin = 'cache_page';
+ $this->default_value = $this->randomName(10);
+
+ parent::setUp();
+ }
+
+ /**
+ * Test clearing using a cid.
+ */
+ function testIsEmpty() {
+ // Clear the cache bin.
+ cache_clear_all('*', $this->default_bin);
+ $this->assertTrue(cache_is_empty($this->default_bin), 'The cache bin is empty');
+ // Add some data to the cache bin.
+ cache_set($this->default_cid, $this->default_value, $this->default_bin);
+ $this->assertCacheExists(t('Cache was set.'), $this->default_value, $this->default_cid);
+ $this->assertFalse(cache_is_empty($this->default_bin), 'The cache bin is not empty');
+ // Remove the cached data.
+ cache_clear_all($this->default_cid, $this->default_bin);
+ $this->assertCacheRemoved(t('Cache was removed.'), $this->default_cid);
+ $this->assertTrue(cache_is_empty($this->default_bin), 'The cache bin is empty');
+ }
+}