ProtobufTest\Extension\ExtensionRegistryTest::testAddAndFindByFieldNumber PHP Метод

    public function testAddAndFindByFieldNumber()
    {
        $registry = new ExtensionRegistry();
        $extension = new ExtensionField(Animal::CLASS, 'animal', 100, function () {
        }, function () {
        }, function () {
        });
        $this->assertNull($registry->findByNumber(Animal::CLASS, 100));
        $registry->add($extension);
        $this->assertSame($extension, $registry->findByNumber(Animal::CLASS, 100));
        $registry->clear();
        $this->assertNull($registry->findByNumber(Animal::CLASS, 100));
    }