+<?php
+
+namespace Drupal\Tests\drupalmoduleupgrader\Unit\Plugin\DMU\Fixer;
+
+use Drupal\drupalmoduleupgrader\Plugin\DMU\Fixer\Delete;
+use Drupal\drupalmoduleupgrader\Plugin\DMU\Indexer\Functions;
+use Drupal\Tests\drupalmoduleupgrader\Unit\TestBase;
+
+/**
+ * @group DMU.Fixer
+ *
+ * @TODO Add a test of the 'where' configuration option.
+ */
+class
+DeleteTest extends TestBase {
+
+ public function test() {
+ $code = <<<'END'
+<?php
+
+function foo_permission() {
+ return array(
+ 'bazify' => array(
+ 'title' => 'Do snazzy bazzy things',
+ ),
+ );
+}
+END;
+ $this->dir->getChild('foo.module')->setContent($code);
+
+ $indexer = new Functions([], 'function', [], $this->db, $this->target);
+ $indexer->build();
+
+ $this
+ ->container
+ ->get('plugin.manager.drupalmoduleupgrader.indexer')
+ ->method('createInstance')
+ ->with('function')
+ ->willReturn($indexer);
+
+ $config = [
+ 'type' => 'function',
+ 'id' => 'hook_permission',
+ ];
+ $plugin = new Delete($config, uniqid(), []);
+ $plugin->setTarget($this->target);
+ $plugin->execute();
+
+ $this->assertFalse($indexer->has('permission'));
+ $this->assertEquals("<?php\n\n", $this->dir->getChild('foo.module')->getContent());
+ }
+
+}