add new demo symfony files

2021-04-17 22:11:27 +02:00
parent fe90d3d32c
commit 92359d6292
194 changed files with 32985 additions and 1 deletions
--- a/app/tests/Form/DataTransformer/TagArrayToStringTransformerTest.php
+++ b/app/tests/Form/DataTransformer/TagArrayToStringTransformerTest.php
@@ -0,0 +1,128 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace App\Tests\Form\DataTransformer;
+
+use App\Entity\Tag;
+use App\Form\DataTransformer\TagArrayToStringTransformer;
+use App\Repository\TagRepository;
+use PHPUnit\Framework\TestCase;
+
+/**
+ * Tests that tags are transformed correctly using the data transformer.
+ *
+ * See https://symfony.com/doc/current/testing/database.html
+ */
+class TagArrayToStringTransformerTest extends TestCase
+{
+    /**
+     * Ensures that tags are created correctly.
+     */
+    public function testCreateTheRightAmountOfTags(): void
+    {
+        $tags = $this->getMockedTransformer()->reverseTransform('Hello, Demo, How');
+
+        $this->assertCount(3, $tags);
+        $this->assertSame('Hello', $tags[0]->getName());
+    }
+
+    /**
+     * Ensures that empty tags and errors in the number of commas are
+     * dealt correctly.
+     */
+    public function testCreateTheRightAmountOfTagsWithTooManyCommas(): void
+    {
+        $transformer = $this->getMockedTransformer();
+
+        $this->assertCount(3, $transformer->reverseTransform('Hello, Demo,, How'));
+        $this->assertCount(3, $transformer->reverseTransform('Hello, Demo, How,'));
+    }
+
+    /**
+     * Ensures that leading/trailing spaces are ignored for tag names.
+     */
+    public function testTrimNames(): void
+    {
+        $tags = $this->getMockedTransformer()->reverseTransform('   Hello   ');
+
+        $this->assertSame('Hello', $tags[0]->getName());
+    }
+
+    /**
+     * Ensures that duplicated tag names are ignored.
+     */
+    public function testDuplicateNames(): void
+    {
+        $tags = $this->getMockedTransformer()->reverseTransform('Hello, Hello, Hello');
+
+        $this->assertCount(1, $tags);
+    }
+
+    /**
+     * Ensures that the transformer uses tags already persisted in the database.
+     */
+    public function testUsesAlreadyDefinedTags(): void
+    {
+        $persistedTags = [
+            $this->createTag('Hello'),
+            $this->createTag('World'),
+        ];
+        $tags = $this->getMockedTransformer($persistedTags)->reverseTransform('Hello, World, How, Are, You');
+
+        $this->assertCount(5, $tags);
+        $this->assertSame($persistedTags[0], $tags[0]);
+        $this->assertSame($persistedTags[1], $tags[1]);
+    }
+
+    /**
+     * Ensures that the transformation from Tag instances to a simple string
+     * works as expected.
+     */
+    public function testTransform(): void
+    {
+        $persistedTags = [
+            $this->createTag('Hello'),
+            $this->createTag('World'),
+        ];
+        $transformed = $this->getMockedTransformer()->transform($persistedTags);
+
+        $this->assertSame('Hello,World', $transformed);
+    }
+
+    /**
+     * This helper method mocks the real TagArrayToStringTransformer class to
+     * simplify the tests. See https://phpunit.de/manual/current/en/test-doubles.html.
+     *
+     * @param array $findByReturnValues The values returned when calling to the findBy() method
+     */
+    private function getMockedTransformer(array $findByReturnValues = []): TagArrayToStringTransformer
+    {
+        $tagRepository = $this->getMockBuilder(TagRepository::class)
+            ->disableOriginalConstructor()
+            ->getMock();
+        $tagRepository->expects($this->any())
+            ->method('findBy')
+            ->willReturn($findByReturnValues);
+
+        return new TagArrayToStringTransformer($tagRepository);
+    }
+
+    /**
+     * This helper method creates a Tag instance for the given tag name.
+     */
+    private function createTag(string $name): Tag
+    {
+        $tag = new Tag();
+        $tag->setName($name);
+
+        return $tag;
+    }
+}