--- /dev/null
+<?php
+
+namespace Drupal\Tests\drupalmoduleupgrader\Unit\Plugin\DMU\Fixer;
+
+use Drupal\drupalmoduleupgrader\IOException;
+use Drupal\drupalmoduleupgrader\Plugin\DMU\Fixer\Implement;
+use Drupal\Tests\drupalmoduleupgrader\Unit\TestBase;
+use Pharborist\NodeCollection;
+use Pharborist\Objects\ClassNode;
+
+/**
+ * @group DMU.Fixer
+ */
+class ImplementTest extends TestBase {
+
+ public function test() {
+ $class = ClassNode::create('Foobaz');
+ $indexer = $this->getMock('\Drupal\drupalmoduleupgrader\IndexerInterface');
+ $indexer->method('get')->with('Foobaz')->willReturn(new NodeCollection([$class]));
+
+ $this
+ ->container
+ ->get('plugin.manager.drupalmoduleupgrader.indexer')
+ ->method('createInstance')
+ ->with('class')
+ ->willReturn($indexer);
+
+ $config = [
+ 'definition' => '\Drupal\Core\Block\BlockPluginInterface::blockForm',
+ 'target' => 'Foobaz',
+ ];
+ $plugin = new Implement($config, uniqID(), []);
+ $plugin->setTarget($this->target);
+ try {
+ // We expect a CodeManagerIOException because we're implementing the
+ // method on a class that is not officially part of the target's code.
+ // That's OK, though.
+ $plugin->execute();
+ }
+ catch (IOException $e) {}
+
+ $this->assertTrue($class->hasMethod('blockForm'));
+ $method = $class->getMethod('blockForm');
+ $this->assertInstanceOf('\Pharborist\Objects\ClassMethodNode', $method);
+ $parameters = $method->getParameters();
+ $this->assertCount(2, $parameters);
+ $this->assertEquals($parameters[0]->getName(), 'form');
+ $this->assertNull($parameters[0]->getTypeHint());
+ $this->assertEquals($parameters[1]->getName(), 'form_state');
+ $type = $parameters[1]->getTypeHint();
+ $this->assertInstanceOf('\Pharborist\Namespaces\NameNode', $type);
+ $this->assertEquals('Drupal\Core\Form\FormStateInterface', $type->getText());
+ }
+
+}