public function testIsBase64String() { $test_file_name = $this->getTestFileByBaseName('photo.jpg'); $test_base64_file_name = $this->getTestFileByBaseName('photo.base64'); $this->assertFalse(FileObject::isBase64String(file_get_contents($test_file_name))); $this->assertTrue(FileObject::isBase64String(base64_encode(file_get_contents($test_file_name)))); $this->assertTrue(FileObject::isBase64String(file_get_contents($test_base64_file_name))); }