--- /dev/null
+<?php
+
+namespace Drupal\Tests\block\Unit;
+
+use Drupal\Component\Utility\Html;
+use Drupal\block\Controller\CategoryAutocompleteController;
+use Drupal\Tests\UnitTestCase;
+use Symfony\Component\HttpFoundation\Request;
+
+/**
+ * @coversDefaultClass \Drupal\block\Controller\CategoryAutocompleteController
+ * @group block
+ */
+class CategoryAutocompleteTest extends UnitTestCase {
+
+ /**
+ * The autocomplete controller.
+ *
+ * @var \Drupal\block\Controller\CategoryAutocompleteController
+ */
+ protected $autocompleteController;
+
+ protected function setUp() {
+ $block_manager = $this->getMock('Drupal\Core\Block\BlockManagerInterface');
+ $block_manager->expects($this->any())
+ ->method('getCategories')
+ ->will($this->returnValue(['Comment', 'Node', 'None & Such', 'User']));
+
+ $this->autocompleteController = new CategoryAutocompleteController($block_manager);
+ }
+
+ /**
+ * Tests the autocomplete method.
+ *
+ * @param string $string
+ * The string entered into the autocomplete.
+ * @param array $suggestions
+ * The array of expected suggestions.
+ *
+ * @see \Drupal\block\Controller\CategoryAutocompleteController::autocomplete()
+ *
+ * @dataProvider providerTestAutocompleteSuggestions
+ */
+ public function testAutocompleteSuggestions($string, $suggestions) {
+ $suggestions = array_map(function ($suggestion) {
+ return ['value' => $suggestion, 'label' => Html::escape($suggestion)];
+ }, $suggestions);
+ $result = $this->autocompleteController->autocomplete(new Request(['q' => $string]));
+ $this->assertSame($suggestions, json_decode($result->getContent(), TRUE));
+ }
+
+ /**
+ * Data provider for testAutocompleteSuggestions().
+ *
+ * @return array
+ */
+ public function providerTestAutocompleteSuggestions() {
+ $test_parameters = [];
+ $test_parameters[] = [
+ 'string' => 'Com',
+ 'suggestions' => [
+ 'Comment',
+ ],
+ ];
+ $test_parameters[] = [
+ 'string' => 'No',
+ 'suggestions' => [
+ 'Node',
+ 'None & Such',
+ ],
+ ];
+ $test_parameters[] = [
+ 'string' => 'us',
+ 'suggestions' => [
+ 'User',
+ ],
+ ];
+ $test_parameters[] = [
+ 'string' => 'Banana',
+ 'suggestions' => [],
+ ];
+ return $test_parameters;
+ }
+
+}