CallTest::testAddSingleAndMultiValueMetadata PHP 메소드

    public function testAddSingleAndMultiValueMetadata()
    {
        $batch = [Grpc\OP_SEND_INITIAL_METADATA => ['key1' => ['value1'], 'key2' => ['value2', 'value3']]];
        $result = $this->call->startBatch($batch);
        $this->assertTrue($result->send_metadata);
    }