grpc/src/php/tests/unit_tests/CallTest.php

<?php
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class CallTest extends PHPUnit_Framework_TestCase{
  static $server;
  static $port;

  public static function setUpBeforeClass() {
    self::$server = new Grpc\Server([]);
    self::$port = self::$server->addHttp2Port('0.0.0.0:0');
  }

  public function setUp() {
    $this->channel = new Grpc\Channel('localhost:' . self::$port, []);
    $this->call = new Grpc\Call($this->channel,
                                '/foo',
                                Grpc\Timeval::infFuture());
  }

  public function testAddEmptyMetadata() {
    $batch = [
        Grpc\OP_SEND_INITIAL_METADATA => []
              ];
    $result = $this->call->startBatch($batch);
    $this->assertTrue($result->send_metadata);
  }

  public function testAddSingleMetadata() {
    $batch = [
        Grpc\OP_SEND_INITIAL_METADATA => ['key' => ['value']]
              ];
    $result = $this->call->startBatch($batch);
    $this->assertTrue($result->send_metadata);
  }

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

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