1 files changed, 27 insertions, 0 deletions
diff --git a/modules/simpletest/tests/database_test.test b/modules/simpletest/tests/database_test.test
index 8d400e68c..d64ee9ed0 100644
--- a/modules/simpletest/tests/database_test.test
+++ b/modules/simpletest/tests/database_test.test
@@ -2981,3 +2981,30 @@ class DatabaseExtraTypesTestCase extends DrupalWebTestCase {
 
 }
 
+
+/**
+ * Check the sequences API.
+ */
+class DatabaseNextIdCase extends DrupalWebTestCase {
+  function getInfo() {
+    return array(
+      'name' => t('Sequences API'),
+      'description' => t('Test the secondary sequences API.'),
+      'group' => t('Database'),
+    );
+  }
+
+  /**
+   * Test that the sequences API work.
+   */
+  function testDbNextId() {
+    $first = db_next_id();
+    $second = db_next_id();
+    // We can test for exact increase in here because we know there is no
+    // other process operating on these tables -- normally we could only
+    // expect $second > $first.
+    $this->assertEqual($first + 1, $second, t('The second call from a sequence provides a number increased by one.'));
+    $result = db_next_id(1000);
+    $this->assertEqual($result, 1001, t('Sequence provides a larger number than the existing ID.'));
+  }
+}