Version 1

[yaffs-website] / web / core / tests / Drupal / KernelTests / Core / Database / NextIdTest.php

diff --git a/web/core/tests/Drupal/KernelTests/Core/Database/NextIdTest.php b/web/core/tests/Drupal/KernelTests/Core/Database/NextIdTest.php
new file mode 100644 (file)
index 0000000..129d50b
--- /dev/null
+++ b/web/core/tests/Drupal/KernelTests/Core/Database/NextIdTest.php
@@ -0,0 +1,39 @@
+<?php
+
+namespace Drupal\KernelTests\Core\Database;
+
+use Drupal\KernelTests\KernelTestBase;
+
+/**
+ * Tests the sequences API.
+ *
+ * @group Database
+ */
+class NextIdTest extends KernelTestBase {
+
+  /**
+   * The modules to enable.
+   * @var array
+   */
+  public static $modules = ['system'];
+
+  protected function setUp() {
+    parent::setUp();
+    $this->installSchema('system', 'sequences');
+  }
+
+  /**
+   * Tests that the sequences API works.
+   */
+  public 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, 'The second call from a sequence provides a number increased by one.');
+    $result = db_next_id(1000);
+    $this->assertEqual($result, 1001, 'Sequence provides a larger number than the existing ID.');
+  }
+
+}