src/php/tests/unit_tests/ChannelTest.php - third_party/grpc - Git at Google

 <?php
 /*
  *
  * Copyright 2015 gRPC authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *     http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  *
  */

 class ChannelTest extends PHPUnit_Framework_TestCase
 {
     public function setUp()
     {
     }

     public function tearDown()
     {
         if (!empty($this->channel)) {
             $this->channel->close();
         }
     }

     public function testInsecureCredentials()
     {
         $this->channel = new Grpc\Channel('localhost:0',
             ['credentials' => Grpc\ChannelCredentials::createInsecure()]);
         $this->assertSame('Grpc\Channel', get_class($this->channel));
     }

     public function testGetConnectivityState()
     {
         $this->channel = new Grpc\Channel('localhost:0',
              ['credentials' => Grpc\ChannelCredentials::createInsecure()]);
         $state = $this->channel->getConnectivityState();
         $this->assertEquals(0, $state);
     }

     public function testGetConnectivityStateWithInt()
     {
         $this->channel = new Grpc\Channel('localhost:0',
              ['credentials' => Grpc\ChannelCredentials::createInsecure()]);
         $state = $this->channel->getConnectivityState(123);
         $this->assertEquals(0, $state);
     }

     public function testGetConnectivityStateWithString()
     {
         $this->channel = new Grpc\Channel('localhost:0',
              ['credentials' => Grpc\ChannelCredentials::createInsecure()]);
         $state = $this->channel->getConnectivityState('hello');
         $this->assertEquals(0, $state);
     }

     public function testGetConnectivityStateWithBool()
     {
         $this->channel = new Grpc\Channel('localhost:0',
              ['credentials' => Grpc\ChannelCredentials::createInsecure()]);
         $state = $this->channel->getConnectivityState(true);
         $this->assertEquals(0, $state);
     }

     public function testGetTarget()
     {
         $this->channel = new Grpc\Channel('localhost:8888',
              ['credentials' => Grpc\ChannelCredentials::createInsecure()]);
         $target = $this->channel->getTarget();
         $this->assertTrue(is_string($target));
     }

     public function testWatchConnectivityState()
     {
         $this->channel = new Grpc\Channel('localhost:0',
              ['credentials' => Grpc\ChannelCredentials::createInsecure()]);
         $now = Grpc\Timeval::now();
         $deadline = $now->add(new Grpc\Timeval(100*1000));  // 100ms
         // we act as if 'CONNECTING'(=1) was the last state
         // we saw, so the default state of 'IDLE' should be delivered instantly
         $state = $this->channel->watchConnectivityState(1, $deadline);
         $this->assertTrue($state);
         unset($now);
         unset($deadline);
     }

     public function testClose()
     {
         $this->channel = new Grpc\Channel('localhost:0',
              ['credentials' => Grpc\ChannelCredentials::createInsecure()]);
         $this->assertNotNull($this->channel);
         $this->channel->close();
     }

     /**
      * @expectedException InvalidArgumentException
      */
     public function testInvalidConstructorWithNull()
     {
         $this->channel = new Grpc\Channel();
         $this->assertNull($this->channel);
     }

     /**
      * @expectedException InvalidArgumentException
      */
     public function testInvalidConstructorWith()
     {
         $this->channel = new Grpc\Channel('localhost:0', 'invalid');
         $this->assertNull($this->channel);
     }

     /**
      * @expectedException InvalidArgumentException
      */
     public function testInvalidCredentials()
     {
         $this->channel = new Grpc\Channel('localhost:0',
             ['credentials' => new Grpc\Timeval(100)]);
     }

     /**
      * @expectedException InvalidArgumentException
      */
     public function testInvalidOptionsArray()
     {
         $this->channel = new Grpc\Channel('localhost:0',
             ['abc' => []]);
     }

     /**
      * @expectedException InvalidArgumentException
      */
     public function testInvalidGetConnectivityStateWithArray()
     {
         $this->channel = new Grpc\Channel('localhost:0',
             ['credentials' => Grpc\ChannelCredentials::createInsecure()]);
         $this->channel->getConnectivityState([]);
     }

     /**
      * @expectedException InvalidArgumentException
      */
     public function testInvalidWatchConnectivityState()
     {
         $this->channel = new Grpc\Channel('localhost:0',
             ['credentials' => Grpc\ChannelCredentials::createInsecure()]);
         $this->channel->watchConnectivityState([]);
     }

     /**
      * @expectedException InvalidArgumentException
      */
     public function testInvalidWatchConnectivityState2()
     {
         $this->channel = new Grpc\Channel('localhost:0',
             ['credentials' => Grpc\ChannelCredentials::createInsecure()]);
         $this->channel->watchConnectivityState(1, 'hi');
     }


     public function assertConnecting($state) {
       $this->assertTrue($state == GRPC\CHANNEL_CONNECTING ||
                         $state == GRPC\CHANNEL_TRANSIENT_FAILURE);
     }

     public function waitUntilNotIdle($channel) {
         for ($i = 0; $i < 10; $i++) {
             $now = Grpc\Timeval::now();
             $deadline = $now->add(new Grpc\Timeval(1000));
             if ($channel->watchConnectivityState(GRPC\CHANNEL_IDLE,
                                                  $deadline)) {
                 return true;
             }
         }
         $this->assertTrue(false);
     }

     public function testPersistentChannelSameHost()
     {
         $this->channel1 = new Grpc\Channel('localhost:1', []);
         // the underlying grpc channel is the same by default
         // when connecting to the same host
         $this->channel2 = new Grpc\Channel('localhost:1', []);

         // both channels should be IDLE
         $state = $this->channel1->getConnectivityState();
         $this->assertEquals(GRPC\CHANNEL_IDLE, $state);
         $state = $this->channel2->getConnectivityState();
         $this->assertEquals(GRPC\CHANNEL_IDLE, $state);

         // try to connect on channel1
         $state = $this->channel1->getConnectivityState(true);
         $this->waitUntilNotIdle($this->channel1);

         // both channels should now be in the CONNECTING state
         $state = $this->channel1->getConnectivityState();
         $this->assertConnecting($state);
         $state = $this->channel2->getConnectivityState();
         $this->assertConnecting($state);

         $this->channel1->close();
         $this->channel2->close();
     }

     public function testPersistentChannelDifferentHost()
     {
         // two different underlying channels because different hostname
         $this->channel1 = new Grpc\Channel('localhost:1', []);
         $this->channel2 = new Grpc\Channel('localhost:2', []);

         // both channels should be IDLE
         $state = $this->channel1->getConnectivityState();
         $this->assertEquals(GRPC\CHANNEL_IDLE, $state);
         $state = $this->channel2->getConnectivityState();
         $this->assertEquals(GRPC\CHANNEL_IDLE, $state);

         // try to connect on channel1
         $state = $this->channel1->getConnectivityState(true);
         $this->waitUntilNotIdle($this->channel1);

         // channel1 should now be in the CONNECTING state
         $state = $this->channel1->getConnectivityState();
         $this->assertConnecting($state);
         // channel2 should still be in the IDLE state
         $state = $this->channel2->getConnectivityState();
         $this->assertEquals(GRPC\CHANNEL_IDLE, $state);

         $this->channel1->close();
         $this->channel2->close();
     }

     public function testPersistentChannelSameArgs()
     {
         $this->channel1 = new Grpc\Channel('localhost:1', ["abc" => "def"]);
         $this->channel2 = new Grpc\Channel('localhost:1', ["abc" => "def"]);

         // try to connect on channel1
         $state = $this->channel1->getConnectivityState(true);
         $this->waitUntilNotIdle($this->channel1);

         $state = $this->channel1->getConnectivityState();
         $this->assertConnecting($state);
         $state = $this->channel2->getConnectivityState();
         $this->assertConnecting($state);

         $this->channel1->close();
         $this->channel2->close();
     }

     public function testPersistentChannelDifferentArgs()
     {
         $this->channel1 = new Grpc\Channel('localhost:1', []);
         $this->channel2 = new Grpc\Channel('localhost:1', ["abc" => "def"]);

         // try to connect on channel1
         $state = $this->channel1->getConnectivityState(true);
         $this->waitUntilNotIdle($this->channel1);

         $state = $this->channel1->getConnectivityState();
         $this->assertConnecting($state);
         $state = $this->channel2->getConnectivityState();
         $this->assertEquals(GRPC\CHANNEL_IDLE, $state);

         $this->channel1->close();
         $this->channel2->close();
     }

     public function testPersistentChannelSameChannelCredentials()
     {
         $creds1 = Grpc\ChannelCredentials::createSsl();
         $creds2 = Grpc\ChannelCredentials::createSsl();

         $this->channel1 = new Grpc\Channel('localhost:1',
                                            ["credentials" => $creds1]);
         $this->channel2 = new Grpc\Channel('localhost:1',
                                            ["credentials" => $creds2]);

         // try to connect on channel1
         $state = $this->channel1->getConnectivityState(true);
         $this->waitUntilNotIdle($this->channel1);

         $state = $this->channel1->getConnectivityState();
         $this->assertConnecting($state);
         $state = $this->channel2->getConnectivityState();
         $this->assertConnecting($state);

         $this->channel1->close();
         $this->channel2->close();
     }

     public function testPersistentChannelDifferentChannelCredentials()
     {
         $creds1 = Grpc\ChannelCredentials::createSsl();
         $creds2 = Grpc\ChannelCredentials::createSsl(
             file_get_contents(dirname(__FILE__).'/../data/ca.pem'));

         $this->channel1 = new Grpc\Channel('localhost:1',
                                            ["credentials" => $creds1]);
         $this->channel2 = new Grpc\Channel('localhost:1',
                                            ["credentials" => $creds2]);

         // try to connect on channel1
         $state = $this->channel1->getConnectivityState(true);
         $this->waitUntilNotIdle($this->channel1);

         $state = $this->channel1->getConnectivityState();
         $this->assertConnecting($state);
         $state = $this->channel2->getConnectivityState();
         $this->assertEquals(GRPC\CHANNEL_IDLE, $state);

         $this->channel1->close();
         $this->channel2->close();
     }

     public function testPersistentChannelSameChannelCredentialsRootCerts()
     {
         $creds1 = Grpc\ChannelCredentials::createSsl(
             file_get_contents(dirname(__FILE__).'/../data/ca.pem'));
         $creds2 = Grpc\ChannelCredentials::createSsl(
             file_get_contents(dirname(__FILE__).'/../data/ca.pem'));

         $this->channel1 = new Grpc\Channel('localhost:1',
                                            ["credentials" => $creds1]);
         $this->channel2 = new Grpc\Channel('localhost:1',
                                            ["credentials" => $creds2]);

         // try to connect on channel1
         $state = $this->channel1->getConnectivityState(true);
         $this->waitUntilNotIdle($this->channel1);

         $state = $this->channel1->getConnectivityState();
         $this->assertConnecting($state);
         $state = $this->channel2->getConnectivityState();
         $this->assertConnecting($state);

         $this->channel1->close();
         $this->channel2->close();
     }

     public function testPersistentChannelDifferentSecureChannelCredentials()
     {
         $creds1 = Grpc\ChannelCredentials::createSsl();
         $creds2 = Grpc\ChannelCredentials::createInsecure();

         $this->channel1 = new Grpc\Channel('localhost:1',
                                            ["credentials" => $creds1]);
         $this->channel2 = new Grpc\Channel('localhost:1',
                                            ["credentials" => $creds2]);

         // try to connect on channel1
         $state = $this->channel1->getConnectivityState(true);
         $this->waitUntilNotIdle($this->channel1);

         $state = $this->channel1->getConnectivityState();
         $this->assertConnecting($state);
         $state = $this->channel2->getConnectivityState();
         $this->assertEquals(GRPC\CHANNEL_IDLE, $state);

         $this->channel1->close();
         $this->channel2->close();
     }

     /**
      * @expectedException RuntimeException
      */
     public function testPersistentChannelSharedChannelClose()
     {
         // same underlying channel
         $this->channel1 = new Grpc\Channel('localhost:1', []);
         $this->channel2 = new Grpc\Channel('localhost:1', []);

         // close channel1
         $this->channel1->close();

         // channel2 is now in SHUTDOWN state
         $state = $this->channel2->getConnectivityState();
         $this->assertEquals(GRPC\CHANNEL_FATAL_FAILURE, $state);

         // calling it again will result in an exception because the
         // channel is already closed
         $state = $this->channel2->getConnectivityState();
     }

     public function testPersistentChannelCreateAfterClose()
     {
         $this->channel1 = new Grpc\Channel('localhost:1', []);

         $this->channel1->close();

         $this->channel2 = new Grpc\Channel('localhost:1', []);
         $state = $this->channel2->getConnectivityState();
         $this->assertEquals(GRPC\CHANNEL_IDLE, $state);

         $this->channel2->close();
     }

     public function testPersistentChannelSharedMoreThanTwo()
     {
         $this->channel1 = new Grpc\Channel('localhost:1', []);
         $this->channel2 = new Grpc\Channel('localhost:1', []);
         $this->channel3 = new Grpc\Channel('localhost:1', []);

         // try to connect on channel1
         $state = $this->channel1->getConnectivityState(true);
         $this->waitUntilNotIdle($this->channel1);

         // all 3 channels should be in CONNECTING state
         $state = $this->channel1->getConnectivityState();
         $this->assertConnecting($state);
         $state = $this->channel2->getConnectivityState();
         $this->assertConnecting($state);
         $state = $this->channel3->getConnectivityState();
         $this->assertConnecting($state);

         $this->channel1->close();
     }

     public function callbackFunc($context)
     {
         return [];
     }

     public function callbackFunc2($context)
     {
         return ["k1" => "v1"];
     }

     public function testPersistentChannelWithCallCredentials()
     {
         $creds = Grpc\ChannelCredentials::createSsl();
         $callCreds = Grpc\CallCredentials::createFromPlugin(
             [$this, 'callbackFunc']);
         $credsWithCallCreds = Grpc\ChannelCredentials::createComposite(
             $creds, $callCreds);

         // If a ChannelCredentials object is composed with a
         // CallCredentials object, the underlying grpc channel will
         // always be created new and NOT persisted.
         $this->channel1 = new Grpc\Channel('localhost:1',
                                            ["credentials" =>
                                             $credsWithCallCreds]);
         $this->channel2 = new Grpc\Channel('localhost:1',
                                            ["credentials" =>
                                             $credsWithCallCreds]);

         // try to connect on channel1
         $state = $this->channel1->getConnectivityState(true);
         $this->waitUntilNotIdle($this->channel1);

         $state = $this->channel1->getConnectivityState();
         $this->assertConnecting($state);
         $state = $this->channel2->getConnectivityState();
         $this->assertEquals(GRPC\CHANNEL_IDLE, $state);

         $this->channel1->close();
         $this->channel2->close();
     }

     public function testPersistentChannelWithDifferentCallCredentials()
     {
         $callCreds1 = Grpc\CallCredentials::createFromPlugin(
             [$this, 'callbackFunc']);
         $callCreds2 = Grpc\CallCredentials::createFromPlugin(
             [$this, 'callbackFunc2']);

         $creds1 = Grpc\ChannelCredentials::createSsl();
         $creds2 = Grpc\ChannelCredentials::createComposite(
             $creds1, $callCreds1);
         $creds3 = Grpc\ChannelCredentials::createComposite(
             $creds1, $callCreds2);

         // Similar to the test above, anytime a ChannelCredentials
         // object is composed with a CallCredentials object, the
         // underlying grpc channel will always be separate and not
         // persisted
         $this->channel1 = new Grpc\Channel('localhost:1',
                                            ["credentials" => $creds1]);
         $this->channel2 = new Grpc\Channel('localhost:1',
                                            ["credentials" => $creds2]);
         $this->channel3 = new Grpc\Channel('localhost:1',
                                            ["credentials" => $creds3]);

         // try to connect on channel1
         $state = $this->channel1->getConnectivityState(true);
         $this->waitUntilNotIdle($this->channel1);

         $state = $this->channel1->getConnectivityState();
         $this->assertConnecting($state);
         $state = $this->channel2->getConnectivityState();
         $this->assertEquals(GRPC\CHANNEL_IDLE, $state);
         $state = $this->channel3->getConnectivityState();
         $this->assertEquals(GRPC\CHANNEL_IDLE, $state);

         $this->channel1->close();
         $this->channel2->close();
         $this->channel3->close();
     }

     public function testPersistentChannelForceNew()
     {
         $this->channel1 = new Grpc\Channel('localhost:1', []);
         // even though all the channel params are the same, channel2
         // has a new and different underlying channel
         $this->channel2 = new Grpc\Channel('localhost:1',
                                            ["force_new" => true]);

         // try to connect on channel1
         $state = $this->channel1->getConnectivityState(true);
         $this->waitUntilNotIdle($this->channel1);

         $state = $this->channel1->getConnectivityState();
         $this->assertConnecting($state);
         $state = $this->channel2->getConnectivityState();
         $this->assertEquals(GRPC\CHANNEL_IDLE, $state);

         $this->channel1->close();
         $this->channel2->close();
     }

     public function testPersistentChannelForceNewOldChannelIdle()
     {

         $this->channel1 = new Grpc\Channel('localhost:1', []);
         $this->channel2 = new Grpc\Channel('localhost:1',
                                            ["force_new" => true]);
         // channel3 shares with channel1
         $this->channel3 = new Grpc\Channel('localhost:1', []);

         // try to connect on channel2
         $state = $this->channel2->getConnectivityState(true);
         $this->waitUntilNotIdle($this->channel2);

         $state = $this->channel1->getConnectivityState();
         $this->assertEquals(GRPC\CHANNEL_IDLE, $state);
         $state = $this->channel2->getConnectivityState();
         $this->assertConnecting($state);
         $state = $this->channel3->getConnectivityState();
         $this->assertEquals(GRPC\CHANNEL_IDLE, $state);

         $this->channel1->close();
         $this->channel2->close();
     }

     /**
      * @expectedException RuntimeException
      */
     public function testPersistentChannelForceNewOldChannelClose()
     {

         $this->channel1 = new Grpc\Channel('localhost:1', []);
         $this->channel2 = new Grpc\Channel('localhost:1',
                                            ["force_new" => true]);
         // channel3 shares with channel1
         $this->channel3 = new Grpc\Channel('localhost:1', []);

         $this->channel1->close();

         $state = $this->channel2->getConnectivityState();
         $this->assertEquals(GRPC\CHANNEL_IDLE, $state);

         // channel3 already closed
         $state = $this->channel3->getConnectivityState();
     }

     public function testPersistentChannelForceNewNewChannelClose()
     {

         $this->channel1 = new Grpc\Channel('localhost:1', []);
         $this->channel2 = new Grpc\Channel('localhost:1',
                                            ["force_new" => true]);
         $this->channel3 = new Grpc\Channel('localhost:1', []);

         $this->channel2->close();

         $state = $this->channel1->getConnectivityState();
         $this->assertEquals(GRPC\CHANNEL_IDLE, $state);

         // can still connect on channel1
         $state = $this->channel1->getConnectivityState(true);
         $this->waitUntilNotIdle($this->channel1);

         $state = $this->channel1->getConnectivityState();
         $this->assertConnecting($state);

         $this->channel1->close();
     }
 }
	<?php
	/*
	*
	* Copyright 2015 gRPC authors.
	*
	* Licensed under the Apache License, Version 2.0 (the "License");
	* you may not use this file except in compliance with the License.
	* You may obtain a copy of the License at
	*
	* http://www.apache.org/licenses/LICENSE-2.0
	*
	* Unless required by applicable law or agreed to in writing, software
	* distributed under the License is distributed on an "AS IS" BASIS,
	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	* See the License for the specific language governing permissions and
	* limitations under the License.
	*
	*/

	class ChannelTest extends PHPUnit_Framework_TestCase
	{
	public function setUp()
	{
	}

	public function tearDown()
	{
	if (!empty($this->channel)) {
	$this->channel->close();
	}
	}

	public function testInsecureCredentials()
	{
	$this->channel = new Grpc\Channel('localhost:0',
	['credentials' => Grpc\ChannelCredentials::createInsecure()]);
	$this->assertSame('Grpc\Channel', get_class($this->channel));
	}

	public function testGetConnectivityState()
	{
	$this->channel = new Grpc\Channel('localhost:0',
	['credentials' => Grpc\ChannelCredentials::createInsecure()]);
	$state = $this->channel->getConnectivityState();
	$this->assertEquals(0, $state);
	}

	public function testGetConnectivityStateWithInt()
	{
	$this->channel = new Grpc\Channel('localhost:0',
	['credentials' => Grpc\ChannelCredentials::createInsecure()]);
	$state = $this->channel->getConnectivityState(123);
	$this->assertEquals(0, $state);
	}

	public function testGetConnectivityStateWithString()
	{
	$this->channel = new Grpc\Channel('localhost:0',
	['credentials' => Grpc\ChannelCredentials::createInsecure()]);
	$state = $this->channel->getConnectivityState('hello');
	$this->assertEquals(0, $state);
	}

	public function testGetConnectivityStateWithBool()
	{
	$this->channel = new Grpc\Channel('localhost:0',
	['credentials' => Grpc\ChannelCredentials::createInsecure()]);
	$state = $this->channel->getConnectivityState(true);
	$this->assertEquals(0, $state);
	}

	public function testGetTarget()
	{
	$this->channel = new Grpc\Channel('localhost:8888',
	['credentials' => Grpc\ChannelCredentials::createInsecure()]);
	$target = $this->channel->getTarget();
	$this->assertTrue(is_string($target));
	}

	public function testWatchConnectivityState()
	{
	$this->channel = new Grpc\Channel('localhost:0',
	['credentials' => Grpc\ChannelCredentials::createInsecure()]);
	$now = Grpc\Timeval::now();
	$deadline = $now->add(new Grpc\Timeval(100*1000)); // 100ms
	// we act as if 'CONNECTING'(=1) was the last state
	// we saw, so the default state of 'IDLE' should be delivered instantly
	$state = $this->channel->watchConnectivityState(1, $deadline);
	$this->assertTrue($state);
	unset($now);
	unset($deadline);
	}

	public function testClose()
	{
	$this->channel = new Grpc\Channel('localhost:0',
	['credentials' => Grpc\ChannelCredentials::createInsecure()]);
	$this->assertNotNull($this->channel);
	$this->channel->close();
	}

	/**
	* @expectedException InvalidArgumentException
	*/
	public function testInvalidConstructorWithNull()
	{
	$this->channel = new Grpc\Channel();
	$this->assertNull($this->channel);
	}

	/**
	* @expectedException InvalidArgumentException
	*/
	public function testInvalidConstructorWith()
	{
	$this->channel = new Grpc\Channel('localhost:0', 'invalid');
	$this->assertNull($this->channel);
	}

	/**
	* @expectedException InvalidArgumentException
	*/
	public function testInvalidCredentials()
	{
	$this->channel = new Grpc\Channel('localhost:0',
	['credentials' => new Grpc\Timeval(100)]);
	}

	/**
	* @expectedException InvalidArgumentException
	*/
	public function testInvalidOptionsArray()
	{
	$this->channel = new Grpc\Channel('localhost:0',
	['abc' => []]);
	}

	/**
	* @expectedException InvalidArgumentException
	*/
	public function testInvalidGetConnectivityStateWithArray()
	{
	$this->channel = new Grpc\Channel('localhost:0',
	['credentials' => Grpc\ChannelCredentials::createInsecure()]);
	$this->channel->getConnectivityState([]);
	}

	/**
	* @expectedException InvalidArgumentException
	*/
	public function testInvalidWatchConnectivityState()
	{
	$this->channel = new Grpc\Channel('localhost:0',
	['credentials' => Grpc\ChannelCredentials::createInsecure()]);
	$this->channel->watchConnectivityState([]);
	}

	/**
	* @expectedException InvalidArgumentException
	*/
	public function testInvalidWatchConnectivityState2()
	{
	$this->channel = new Grpc\Channel('localhost:0',
	['credentials' => Grpc\ChannelCredentials::createInsecure()]);
	$this->channel->watchConnectivityState(1, 'hi');
	}


	public function assertConnecting($state) {
	$this->assertTrue($state == GRPC\CHANNEL_CONNECTING \|\|
	$state == GRPC\CHANNEL_TRANSIENT_FAILURE);
	}

	public function waitUntilNotIdle($channel) {
	for ($i = 0; $i < 10; $i++) {
	$now = Grpc\Timeval::now();
	$deadline = $now->add(new Grpc\Timeval(1000));
	if ($channel->watchConnectivityState(GRPC\CHANNEL_IDLE,
	$deadline)) {
	return true;
	}
	}
	$this->assertTrue(false);
	}

	public function testPersistentChannelSameHost()
	{
	$this->channel1 = new Grpc\Channel('localhost:1', []);
	// the underlying grpc channel is the same by default
	// when connecting to the same host
	$this->channel2 = new Grpc\Channel('localhost:1', []);

	// both channels should be IDLE
	$state = $this->channel1->getConnectivityState();
	$this->assertEquals(GRPC\CHANNEL_IDLE, $state);
	$state = $this->channel2->getConnectivityState();
	$this->assertEquals(GRPC\CHANNEL_IDLE, $state);

	// try to connect on channel1
	$state = $this->channel1->getConnectivityState(true);
	$this->waitUntilNotIdle($this->channel1);

	// both channels should now be in the CONNECTING state
	$state = $this->channel1->getConnectivityState();
	$this->assertConnecting($state);
	$state = $this->channel2->getConnectivityState();
	$this->assertConnecting($state);

	$this->channel1->close();
	$this->channel2->close();
	}

	public function testPersistentChannelDifferentHost()
	{
	// two different underlying channels because different hostname
	$this->channel1 = new Grpc\Channel('localhost:1', []);
	$this->channel2 = new Grpc\Channel('localhost:2', []);

	// both channels should be IDLE
	$state = $this->channel1->getConnectivityState();
	$this->assertEquals(GRPC\CHANNEL_IDLE, $state);
	$state = $this->channel2->getConnectivityState();
	$this->assertEquals(GRPC\CHANNEL_IDLE, $state);

	// try to connect on channel1
	$state = $this->channel1->getConnectivityState(true);
	$this->waitUntilNotIdle($this->channel1);

	// channel1 should now be in the CONNECTING state
	$state = $this->channel1->getConnectivityState();
	$this->assertConnecting($state);
	// channel2 should still be in the IDLE state
	$state = $this->channel2->getConnectivityState();
	$this->assertEquals(GRPC\CHANNEL_IDLE, $state);

	$this->channel1->close();
	$this->channel2->close();
	}

	public function testPersistentChannelSameArgs()
	{
	$this->channel1 = new Grpc\Channel('localhost:1', ["abc" => "def"]);
	$this->channel2 = new Grpc\Channel('localhost:1', ["abc" => "def"]);

	// try to connect on channel1
	$state = $this->channel1->getConnectivityState(true);
	$this->waitUntilNotIdle($this->channel1);

	$state = $this->channel1->getConnectivityState();
	$this->assertConnecting($state);
	$state = $this->channel2->getConnectivityState();
	$this->assertConnecting($state);

	$this->channel1->close();
	$this->channel2->close();
	}

	public function testPersistentChannelDifferentArgs()
	{
	$this->channel1 = new Grpc\Channel('localhost:1', []);
	$this->channel2 = new Grpc\Channel('localhost:1', ["abc" => "def"]);

	// try to connect on channel1
	$state = $this->channel1->getConnectivityState(true);
	$this->waitUntilNotIdle($this->channel1);

	$state = $this->channel1->getConnectivityState();
	$this->assertConnecting($state);
	$state = $this->channel2->getConnectivityState();
	$this->assertEquals(GRPC\CHANNEL_IDLE, $state);

	$this->channel1->close();
	$this->channel2->close();
	}

	public function testPersistentChannelSameChannelCredentials()
	{
	$creds1 = Grpc\ChannelCredentials::createSsl();
	$creds2 = Grpc\ChannelCredentials::createSsl();

	$this->channel1 = new Grpc\Channel('localhost:1',
	["credentials" => $creds1]);
	$this->channel2 = new Grpc\Channel('localhost:1',
	["credentials" => $creds2]);

	// try to connect on channel1
	$state = $this->channel1->getConnectivityState(true);
	$this->waitUntilNotIdle($this->channel1);

	$state = $this->channel1->getConnectivityState();
	$this->assertConnecting($state);
	$state = $this->channel2->getConnectivityState();
	$this->assertConnecting($state);

	$this->channel1->close();
	$this->channel2->close();
	}

	public function testPersistentChannelDifferentChannelCredentials()
	{
	$creds1 = Grpc\ChannelCredentials::createSsl();
	$creds2 = Grpc\ChannelCredentials::createSsl(
	file_get_contents(dirname(__FILE__).'/../data/ca.pem'));

	$this->channel1 = new Grpc\Channel('localhost:1',
	["credentials" => $creds1]);
	$this->channel2 = new Grpc\Channel('localhost:1',
	["credentials" => $creds2]);

	// try to connect on channel1
	$state = $this->channel1->getConnectivityState(true);
	$this->waitUntilNotIdle($this->channel1);

	$state = $this->channel1->getConnectivityState();
	$this->assertConnecting($state);
	$state = $this->channel2->getConnectivityState();
	$this->assertEquals(GRPC\CHANNEL_IDLE, $state);

	$this->channel1->close();
	$this->channel2->close();
	}

	public function testPersistentChannelSameChannelCredentialsRootCerts()
	{
	$creds1 = Grpc\ChannelCredentials::createSsl(
	file_get_contents(dirname(__FILE__).'/../data/ca.pem'));
	$creds2 = Grpc\ChannelCredentials::createSsl(
	file_get_contents(dirname(__FILE__).'/../data/ca.pem'));

	$this->channel1 = new Grpc\Channel('localhost:1',
	["credentials" => $creds1]);
	$this->channel2 = new Grpc\Channel('localhost:1',
	["credentials" => $creds2]);

	// try to connect on channel1
	$state = $this->channel1->getConnectivityState(true);
	$this->waitUntilNotIdle($this->channel1);

	$state = $this->channel1->getConnectivityState();
	$this->assertConnecting($state);
	$state = $this->channel2->getConnectivityState();
	$this->assertConnecting($state);

	$this->channel1->close();
	$this->channel2->close();
	}

	public function testPersistentChannelDifferentSecureChannelCredentials()
	{
	$creds1 = Grpc\ChannelCredentials::createSsl();
	$creds2 = Grpc\ChannelCredentials::createInsecure();

	$this->channel1 = new Grpc\Channel('localhost:1',
	["credentials" => $creds1]);
	$this->channel2 = new Grpc\Channel('localhost:1',
	["credentials" => $creds2]);

	// try to connect on channel1
	$state = $this->channel1->getConnectivityState(true);
	$this->waitUntilNotIdle($this->channel1);

	$state = $this->channel1->getConnectivityState();
	$this->assertConnecting($state);
	$state = $this->channel2->getConnectivityState();
	$this->assertEquals(GRPC\CHANNEL_IDLE, $state);

	$this->channel1->close();
	$this->channel2->close();
	}

	/**
	* @expectedException RuntimeException
	*/
	public function testPersistentChannelSharedChannelClose()
	{
	// same underlying channel
	$this->channel1 = new Grpc\Channel('localhost:1', []);
	$this->channel2 = new Grpc\Channel('localhost:1', []);

	// close channel1
	$this->channel1->close();

	// channel2 is now in SHUTDOWN state
	$state = $this->channel2->getConnectivityState();
	$this->assertEquals(GRPC\CHANNEL_FATAL_FAILURE, $state);

	// calling it again will result in an exception because the
	// channel is already closed
	$state = $this->channel2->getConnectivityState();
	}

	public function testPersistentChannelCreateAfterClose()
	{
	$this->channel1 = new Grpc\Channel('localhost:1', []);

	$this->channel1->close();

	$this->channel2 = new Grpc\Channel('localhost:1', []);
	$state = $this->channel2->getConnectivityState();
	$this->assertEquals(GRPC\CHANNEL_IDLE, $state);

	$this->channel2->close();
	}

	public function testPersistentChannelSharedMoreThanTwo()
	{
	$this->channel1 = new Grpc\Channel('localhost:1', []);
	$this->channel2 = new Grpc\Channel('localhost:1', []);
	$this->channel3 = new Grpc\Channel('localhost:1', []);

	// try to connect on channel1
	$state = $this->channel1->getConnectivityState(true);
	$this->waitUntilNotIdle($this->channel1);

	// all 3 channels should be in CONNECTING state
	$state = $this->channel1->getConnectivityState();
	$this->assertConnecting($state);
	$state = $this->channel2->getConnectivityState();
	$this->assertConnecting($state);
	$state = $this->channel3->getConnectivityState();
	$this->assertConnecting($state);

	$this->channel1->close();
	}

	public function callbackFunc($context)
	{
	return [];
	}

	public function callbackFunc2($context)
	{
	return ["k1" => "v1"];
	}

	public function testPersistentChannelWithCallCredentials()
	{
	$creds = Grpc\ChannelCredentials::createSsl();
	$callCreds = Grpc\CallCredentials::createFromPlugin(
	[$this, 'callbackFunc']);
	$credsWithCallCreds = Grpc\ChannelCredentials::createComposite(
	$creds, $callCreds);

	// If a ChannelCredentials object is composed with a
	// CallCredentials object, the underlying grpc channel will
	// always be created new and NOT persisted.
	$this->channel1 = new Grpc\Channel('localhost:1',
	["credentials" =>
	$credsWithCallCreds]);
	$this->channel2 = new Grpc\Channel('localhost:1',
	["credentials" =>
	$credsWithCallCreds]);

	// try to connect on channel1
	$state = $this->channel1->getConnectivityState(true);
	$this->waitUntilNotIdle($this->channel1);

	$state = $this->channel1->getConnectivityState();
	$this->assertConnecting($state);
	$state = $this->channel2->getConnectivityState();
	$this->assertEquals(GRPC\CHANNEL_IDLE, $state);

	$this->channel1->close();
	$this->channel2->close();
	}

	public function testPersistentChannelWithDifferentCallCredentials()
	{
	$callCreds1 = Grpc\CallCredentials::createFromPlugin(
	[$this, 'callbackFunc']);
	$callCreds2 = Grpc\CallCredentials::createFromPlugin(
	[$this, 'callbackFunc2']);

	$creds1 = Grpc\ChannelCredentials::createSsl();
	$creds2 = Grpc\ChannelCredentials::createComposite(
	$creds1, $callCreds1);
	$creds3 = Grpc\ChannelCredentials::createComposite(
	$creds1, $callCreds2);

	// Similar to the test above, anytime a ChannelCredentials
	// object is composed with a CallCredentials object, the
	// underlying grpc channel will always be separate and not
	// persisted
	$this->channel1 = new Grpc\Channel('localhost:1',
	["credentials" => $creds1]);
	$this->channel2 = new Grpc\Channel('localhost:1',
	["credentials" => $creds2]);
	$this->channel3 = new Grpc\Channel('localhost:1',
	["credentials" => $creds3]);

	// try to connect on channel1
	$state = $this->channel1->getConnectivityState(true);
	$this->waitUntilNotIdle($this->channel1);

	$state = $this->channel1->getConnectivityState();
	$this->assertConnecting($state);
	$state = $this->channel2->getConnectivityState();
	$this->assertEquals(GRPC\CHANNEL_IDLE, $state);
	$state = $this->channel3->getConnectivityState();
	$this->assertEquals(GRPC\CHANNEL_IDLE, $state);

	$this->channel1->close();
	$this->channel2->close();
	$this->channel3->close();
	}

	public function testPersistentChannelForceNew()
	{
	$this->channel1 = new Grpc\Channel('localhost:1', []);
	// even though all the channel params are the same, channel2
	// has a new and different underlying channel
	$this->channel2 = new Grpc\Channel('localhost:1',
	["force_new" => true]);

	// try to connect on channel1
	$state = $this->channel1->getConnectivityState(true);
	$this->waitUntilNotIdle($this->channel1);

	$state = $this->channel1->getConnectivityState();
	$this->assertConnecting($state);
	$state = $this->channel2->getConnectivityState();
	$this->assertEquals(GRPC\CHANNEL_IDLE, $state);

	$this->channel1->close();
	$this->channel2->close();
	}

	public function testPersistentChannelForceNewOldChannelIdle()
	{

	$this->channel1 = new Grpc\Channel('localhost:1', []);
	$this->channel2 = new Grpc\Channel('localhost:1',
	["force_new" => true]);
	// channel3 shares with channel1
	$this->channel3 = new Grpc\Channel('localhost:1', []);

	// try to connect on channel2
	$state = $this->channel2->getConnectivityState(true);
	$this->waitUntilNotIdle($this->channel2);

	$state = $this->channel1->getConnectivityState();
	$this->assertEquals(GRPC\CHANNEL_IDLE, $state);
	$state = $this->channel2->getConnectivityState();
	$this->assertConnecting($state);
	$state = $this->channel3->getConnectivityState();
	$this->assertEquals(GRPC\CHANNEL_IDLE, $state);

	$this->channel1->close();
	$this->channel2->close();
	}

	/**
	* @expectedException RuntimeException
	*/
	public function testPersistentChannelForceNewOldChannelClose()
	{

	$this->channel1 = new Grpc\Channel('localhost:1', []);
	$this->channel2 = new Grpc\Channel('localhost:1',
	["force_new" => true]);
	// channel3 shares with channel1
	$this->channel3 = new Grpc\Channel('localhost:1', []);

	$this->channel1->close();

	$state = $this->channel2->getConnectivityState();
	$this->assertEquals(GRPC\CHANNEL_IDLE, $state);

	// channel3 already closed
	$state = $this->channel3->getConnectivityState();
	}

	public function testPersistentChannelForceNewNewChannelClose()
	{

	$this->channel1 = new Grpc\Channel('localhost:1', []);
	$this->channel2 = new Grpc\Channel('localhost:1',
	["force_new" => true]);
	$this->channel3 = new Grpc\Channel('localhost:1', []);

	$this->channel2->close();

	$state = $this->channel1->getConnectivityState();
	$this->assertEquals(GRPC\CHANNEL_IDLE, $state);

	// can still connect on channel1
	$state = $this->channel1->getConnectivityState(true);
	$this->waitUntilNotIdle($this->channel1);

	$state = $this->channel1->getConnectivityState();
	$this->assertConnecting($state);

	$this->channel1->close();
	}
	}