- Patch #575360 by dropcube: added API function to check if a cache bin is empty.

1 files changed, 37 insertions, 0 deletions

diff --git a/modules/simpletest/tests/cache.test b/modules/simpletest/tests/cache.test
index 8de74b04e..0fc9fe298 100644
--- a/modules/simpletest/tests/cache.test
+++ b/modules/simpletest/tests/cache.test
@@ -312,3 +312,40 @@ class CacheClearCase extends CacheTestCase {
                        t('All cache entries removed when the array exceeded the cache clear threshold.'));
   }
 }
+
+/**
+ * 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), t('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), t('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), t('The cache bin is empty'));
+  }
+}