normalizer = self::getContainer()->get(NormalizerInterface::class); } public function testNormalization() { $si = new SocialIssue(); $normalized = $this->normalizer->normalize( $si, 'json', ['groups' => ['read']] ); $this->assertIsArray($normalized); $this->assertArrayHasKey('type', $normalized); $this->assertEquals('social_issue', $normalized['type']); } }