php: ran php-cs-fixer to comply with php coding standard

1 files changed, 315 insertions, 282 deletions

diff --git a/src/php/tests/interop/interop_client.php b/src/php/tests/interop/interop_client.php
index 03ce2ac700..3019866561 100755
--- a/src/php/tests/interop/interop_client.php
+++ b/src/php/tests/interop/interop_client.php
@@ -31,7 +31,7 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
  */
-require_once realpath(dirname(__FILE__) . '/../../vendor/autoload.php');
+require_once realpath(dirname(__FILE__).'/../../vendor/autoload.php');
 require 'empty.php';
 require 'messages.php';
 require 'test.php';
@@ -41,394 +41,427 @@ use GuzzleHttp\ClientInterface;
 
 /**
  * Assertion function that always exits with an error code if the assertion is
- * falsy
+ * falsy.
+ *
  * @param $value Assertion value. Should be true.
  * @param $error_message Message to display if the assertion is false
  */
-function hardAssert($value, $error_message) {
-  if (!$value) {
-    echo $error_message . "\n";
-    exit(1);
-  }
+function hardAssert($value, $error_message)
+{
+    if (!$value) {
+        echo $error_message."\n";
+        exit(1);
+    }
 }
 
 /**
  * Run the empty_unary test.
+ *
  * @param $stub Stub object that has service methods
  */
-function emptyUnary($stub) {
-  list($result, $status) = $stub->EmptyCall(new grpc\testing\EmptyMessage())->wait();
-  hardAssert($status->code === Grpc\STATUS_OK, 'Call did not complete successfully');
-  hardAssert($result !== null, 'Call completed with a null response');
+function emptyUnary($stub)
+{
+    list($result, $status) = $stub->EmptyCall(new grpc\testing\EmptyMessage())->wait();
+    hardAssert($status->code === Grpc\STATUS_OK, 'Call did not complete successfully');
+    hardAssert($result !== null, 'Call completed with a null response');
 }
 
 /**
  * Run the large_unary test.
+ *
  * @param $stub Stub object that has service methods
  */
-function largeUnary($stub) {
-  performLargeUnary($stub);
+function largeUnary($stub)
+{
+    performLargeUnary($stub);
 }
 
 /**
- * Shared code between large unary test and auth test
+ * Shared code between large unary test and auth test.
+ *
  * @param $stub Stub object that has service methods
  * @param $fillUsername boolean whether to fill result with username
  * @param $fillOauthScope boolean whether to fill result with oauth scope
  */
 function performLargeUnary($stub, $fillUsername = false, $fillOauthScope = false,
-                           $metadata = array()) {
-  $request_len = 271828;
-  $response_len = 314159;
-
-  $request = new grpc\testing\SimpleRequest();
-  $request->setResponseType(grpc\testing\PayloadType::COMPRESSABLE);
-  $request->setResponseSize($response_len);
-  $payload = new grpc\testing\Payload();
-  $payload->setType(grpc\testing\PayloadType::COMPRESSABLE);
-  $payload->setBody(str_repeat("\0", $request_len));
-  $request->setPayload($payload);
-  $request->setFillUsername($fillUsername);
-  $request->setFillOauthScope($fillOauthScope);
-
-  list($result, $status) = $stub->UnaryCall($request, $metadata)->wait();
-  hardAssert($status->code === Grpc\STATUS_OK, 'Call did not complete successfully');
-  hardAssert($result !== null, 'Call returned a null response');
-  $payload = $result->getPayload();
-  hardAssert($payload->getType() === grpc\testing\PayloadType::COMPRESSABLE,
+                           $metadata = [])
+{
+    $request_len = 271828;
+    $response_len = 314159;
+
+    $request = new grpc\testing\SimpleRequest();
+    $request->setResponseType(grpc\testing\PayloadType::COMPRESSABLE);
+    $request->setResponseSize($response_len);
+    $payload = new grpc\testing\Payload();
+    $payload->setType(grpc\testing\PayloadType::COMPRESSABLE);
+    $payload->setBody(str_repeat("\0", $request_len));
+    $request->setPayload($payload);
+    $request->setFillUsername($fillUsername);
+    $request->setFillOauthScope($fillOauthScope);
+
+    list($result, $status) = $stub->UnaryCall($request, $metadata)->wait();
+    hardAssert($status->code === Grpc\STATUS_OK, 'Call did not complete successfully');
+    hardAssert($result !== null, 'Call returned a null response');
+    $payload = $result->getPayload();
+    hardAssert($payload->getType() === grpc\testing\PayloadType::COMPRESSABLE,
          'Payload had the wrong type');
-  hardAssert(strlen($payload->getBody()) === $response_len,
+    hardAssert(strlen($payload->getBody()) === $response_len,
          'Payload had the wrong length');
-  hardAssert($payload->getBody() === str_repeat("\0", $response_len),
+    hardAssert($payload->getBody() === str_repeat("\0", $response_len),
          'Payload had the wrong content');
-  return $result;
+
+    return $result;
 }
 
 /**
  * Run the service account credentials auth test.
+ *
  * @param $stub Stub object that has service methods
  * @param $args array command line args
  */
-function serviceAccountCreds($stub, $args) {
-  if (!array_key_exists('oauth_scope', $args)) {
-    throw new Exception('Missing oauth scope');
-  }
-  $jsonKey = json_decode(
-      file_get_contents(getenv(CredentialsLoader::ENV_VAR)),
-      true);
-  $result = performLargeUnary($stub, $fillUsername=true, $fillOauthScope=true);
-  hardAssert($result->getUsername() == $jsonKey['client_email'],
+function serviceAccountCreds($stub, $args)
+{
+    if (!array_key_exists('oauth_scope', $args)) {
+        throw new Exception('Missing oauth scope');
+    }
+    $jsonKey = json_decode(
+        file_get_contents(getenv(CredentialsLoader::ENV_VAR)),
+        true);
+    $result = performLargeUnary($stub, $fillUsername = true, $fillOauthScope = true);
+    hardAssert($result->getUsername() == $jsonKey['client_email'],
              'invalid email returned');
-  hardAssert(strpos($args['oauth_scope'], $result->getOauthScope()) !== false,
+    hardAssert(strpos($args['oauth_scope'], $result->getOauthScope()) !== false,
              'invalid oauth scope returned');
 }
 
 /**
  * Run the compute engine credentials auth test.
- * Has not been run from gcloud as of 2015-05-05
+ * Has not been run from gcloud as of 2015-05-05.
+ *
  * @param $stub Stub object that has service methods
  * @param $args array command line args
  */
-function computeEngineCreds($stub, $args) {
-  if (!array_key_exists('oauth_scope', $args)) {
-    throw new Exception('Missing oauth scope');
-  }
-  if (!array_key_exists('default_service_account', $args)) {
-    throw new Exception('Missing default_service_account');
-  }
-  $result = performLargeUnary($stub, $fillUsername=true, $fillOauthScope=true);
-  hardAssert($args['default_service_account'] == $result->getUsername(),
+function computeEngineCreds($stub, $args)
+{
+    if (!array_key_exists('oauth_scope', $args)) {
+        throw new Exception('Missing oauth scope');
+    }
+    if (!array_key_exists('default_service_account', $args)) {
+        throw new Exception('Missing default_service_account');
+    }
+    $result = performLargeUnary($stub, $fillUsername = true, $fillOauthScope = true);
+    hardAssert($args['default_service_account'] == $result->getUsername(),
              'invalid email returned');
 }
 
 /**
  * Run the jwt token credentials auth test.
+ *
  * @param $stub Stub object that has service methods
  * @param $args array command line args
  */
-function jwtTokenCreds($stub, $args) {
-  $jsonKey = json_decode(
-      file_get_contents(getenv(CredentialsLoader::ENV_VAR)),
-      true);
-  $result = performLargeUnary($stub, $fillUsername=true, $fillOauthScope=true);
-  hardAssert($result->getUsername() == $jsonKey['client_email'],
+function jwtTokenCreds($stub, $args)
+{
+    $jsonKey = json_decode(
+        file_get_contents(getenv(CredentialsLoader::ENV_VAR)),
+        true);
+    $result = performLargeUnary($stub, $fillUsername = true, $fillOauthScope = true);
+    hardAssert($result->getUsername() == $jsonKey['client_email'],
              'invalid email returned');
 }
 
 /**
  * Run the oauth2_auth_token auth test.
+ *
  * @param $stub Stub object that has service methods
  * @param $args array command line args
  */
-function oauth2AuthToken($stub, $args) {
-  $jsonKey = json_decode(
-      file_get_contents(getenv(CredentialsLoader::ENV_VAR)),
-      true);
-  $result = performLargeUnary($stub, $fillUsername=true, $fillOauthScope=true);
-  hardAssert($result->getUsername() == $jsonKey['client_email'],
+function oauth2AuthToken($stub, $args)
+{
+    $jsonKey = json_decode(
+        file_get_contents(getenv(CredentialsLoader::ENV_VAR)),
+        true);
+    $result = performLargeUnary($stub, $fillUsername = true, $fillOauthScope = true);
+    hardAssert($result->getUsername() == $jsonKey['client_email'],
              'invalid email returned');
 }
 
 /**
  * Run the per_rpc_creds auth test.
+ *
  * @param $stub Stub object that has service methods
  * @param $args array command line args
  */
-function perRpcCreds($stub, $args) {
-  $jsonKey = json_decode(
-      file_get_contents(getenv(CredentialsLoader::ENV_VAR)),
-      true);
-  $auth_credentials = ApplicationDefaultCredentials::getCredentials(
-      $args['oauth_scope']
-  );
-  $token = $auth_credentials->fetchAuthToken();
-  $metadata = array(CredentialsLoader::AUTH_METADATA_KEY =>
-                    array(sprintf("%s %s",
-                                  $token['token_type'],
-                                  $token['access_token'])));
-  $result = performLargeUnary($stub, $fillUsername=true, $fillOauthScope=true,
+function perRpcCreds($stub, $args)
+{
+    $jsonKey = json_decode(
+        file_get_contents(getenv(CredentialsLoader::ENV_VAR)),
+        true);
+    $auth_credentials = ApplicationDefaultCredentials::getCredentials(
+        $args['oauth_scope']
+    );
+    $token = $auth_credentials->fetchAuthToken();
+    $metadata = [CredentialsLoader::AUTH_METADATA_KEY => [sprintf('%s %s',
+                          $token['token_type'],
+                          $token['access_token'])]];
+    $result = performLargeUnary($stub, $fillUsername = true, $fillOauthScope = true,
                               $metadata);
-  hardAssert($result->getUsername() == $jsonKey['client_email'],
+    hardAssert($result->getUsername() == $jsonKey['client_email'],
              'invalid email returned');
 }
 
 /**
  * Run the client_streaming test.
+ *
  * @param $stub Stub object that has service methods
  */
-function clientStreaming($stub) {
-  $request_lengths = array(27182, 8, 1828, 45904);
-
-  $requests = array_map(
-      function($length) {
-        $request = new grpc\testing\StreamingInputCallRequest();
-        $payload = new grpc\testing\Payload();
-        $payload->setBody(str_repeat("\0", $length));
-        $request->setPayload($payload);
-        return $request;
-      }, $request_lengths);
-
-  $call = $stub->StreamingInputCall();
-  foreach ($requests as $request) {
-    $call->write($request);
-  }
-  list($result, $status) = $call->wait();
-  hardAssert($status->code === Grpc\STATUS_OK, 'Call did not complete successfully');
-  hardAssert($result->getAggregatedPayloadSize() === 74922,
+function clientStreaming($stub)
+{
+    $request_lengths = [27182, 8, 1828, 45904];
+
+    $requests = array_map(
+        function ($length) {
+            $request = new grpc\testing\StreamingInputCallRequest();
+            $payload = new grpc\testing\Payload();
+            $payload->setBody(str_repeat("\0", $length));
+            $request->setPayload($payload);
+
+            return $request;
+        }, $request_lengths);
+
+    $call = $stub->StreamingInputCall();
+    foreach ($requests as $request) {
+        $call->write($request);
+    }
+    list($result, $status) = $call->wait();
+    hardAssert($status->code === Grpc\STATUS_OK, 'Call did not complete successfully');
+    hardAssert($result->getAggregatedPayloadSize() === 74922,
               'aggregated_payload_size was incorrect');
 }
 
 /**
  * Run the server_streaming test.
+ *
  * @param $stub Stub object that has service methods.
  */
-function serverStreaming($stub) {
-  $sizes = array(31415, 9, 2653, 58979);
-
-  $request = new grpc\testing\StreamingOutputCallRequest();
-  $request->setResponseType(grpc\testing\PayloadType::COMPRESSABLE);
-  foreach($sizes as $size) {
-    $response_parameters = new grpc\testing\ResponseParameters();
-    $response_parameters->setSize($size);
-    $request->addResponseParameters($response_parameters);
-  }
+function serverStreaming($stub)
+{
+    $sizes = [31415, 9, 2653, 58979];
 
-  $call = $stub->StreamingOutputCall($request);
-  $i = 0;
-  foreach($call->responses() as $value) {
-    hardAssert($i < 4, 'Too many responses');
-    $payload = $value->getPayload();
-    hardAssert($payload->getType() === grpc\testing\PayloadType::COMPRESSABLE,
-                'Payload ' . $i . ' had the wrong type');
-    hardAssert(strlen($payload->getBody()) === $sizes[$i],
-                'Response ' . $i . ' had the wrong length');
-    $i += 1;
-  }
-  hardAssert($call->getStatus()->code === Grpc\STATUS_OK,
+    $request = new grpc\testing\StreamingOutputCallRequest();
+    $request->setResponseType(grpc\testing\PayloadType::COMPRESSABLE);
+    foreach ($sizes as $size) {
+        $response_parameters = new grpc\testing\ResponseParameters();
+        $response_parameters->setSize($size);
+        $request->addResponseParameters($response_parameters);
+    }
+
+    $call = $stub->StreamingOutputCall($request);
+    $i = 0;
+    foreach ($call->responses() as $value) {
+        hardAssert($i < 4, 'Too many responses');
+        $payload = $value->getPayload();
+        hardAssert($payload->getType() === grpc\testing\PayloadType::COMPRESSABLE,
+                'Payload '.$i.' had the wrong type');
+        hardAssert(strlen($payload->getBody()) === $sizes[$i],
+                'Response '.$i.' had the wrong length');
+        $i += 1;
+    }
+    hardAssert($call->getStatus()->code === Grpc\STATUS_OK,
              'Call did not complete successfully');
 }
 
 /**
  * Run the ping_pong test.
+ *
  * @param $stub Stub object that has service methods.
  */
-function pingPong($stub) {
-  $request_lengths = array(27182, 8, 1828, 45904);
-  $response_lengths = array(31415, 9, 2653, 58979);
-
-  $call = $stub->FullDuplexCall();
-  for($i = 0; $i < 4; $i++) {
-    $request = new grpc\testing\StreamingOutputCallRequest();
-    $request->setResponseType(grpc\testing\PayloadType::COMPRESSABLE);
-    $response_parameters = new grpc\testing\ResponseParameters();
-    $response_parameters->setSize($response_lengths[$i]);
-    $request->addResponseParameters($response_parameters);
-    $payload = new grpc\testing\Payload();
-    $payload->setBody(str_repeat("\0", $request_lengths[$i]));
-    $request->setPayload($payload);
-
-    $call->write($request);
-    $response = $call->read();
+function pingPong($stub)
+{
+    $request_lengths = [27182, 8, 1828, 45904];
+    $response_lengths = [31415, 9, 2653, 58979];
+
+    $call = $stub->FullDuplexCall();
+    for ($i = 0; $i < 4; ++$i) {
+        $request = new grpc\testing\StreamingOutputCallRequest();
+        $request->setResponseType(grpc\testing\PayloadType::COMPRESSABLE);
+        $response_parameters = new grpc\testing\ResponseParameters();
+        $response_parameters->setSize($response_lengths[$i]);
+        $request->addResponseParameters($response_parameters);
+        $payload = new grpc\testing\Payload();
+        $payload->setBody(str_repeat("\0", $request_lengths[$i]));
+        $request->setPayload($payload);
 
-    hardAssert($response !== null, 'Server returned too few responses');
-    $payload = $response->getPayload();
-    hardAssert($payload->getType() === grpc\testing\PayloadType::COMPRESSABLE,
-                'Payload ' . $i . ' had the wrong type');
-    hardAssert(strlen($payload->getBody()) === $response_lengths[$i],
-                'Payload ' . $i . ' had the wrong length');
-  }
-  $call->writesDone();
-  hardAssert($call->read() === null, 'Server returned too many responses');
-  hardAssert($call->getStatus()->code === Grpc\STATUS_OK,
+        $call->write($request);
+        $response = $call->read();
+
+        hardAssert($response !== null, 'Server returned too few responses');
+        $payload = $response->getPayload();
+        hardAssert($payload->getType() === grpc\testing\PayloadType::COMPRESSABLE,
+                'Payload '.$i.' had the wrong type');
+        hardAssert(strlen($payload->getBody()) === $response_lengths[$i],
+                'Payload '.$i.' had the wrong length');
+    }
+    $call->writesDone();
+    hardAssert($call->read() === null, 'Server returned too many responses');
+    hardAssert($call->getStatus()->code === Grpc\STATUS_OK,
               'Call did not complete successfully');
 }
 
 /**
  * Run the empty_stream test.
+ *
  * @param $stub Stub object that has service methods.
  */
-function emptyStream($stub) {
-  $call = $stub->FullDuplexCall();
-  $call->writesDone();
-  hardAssert($call->read() === null, 'Server returned too many responses');
-  hardAssert($call->getStatus()->code === Grpc\STATUS_OK,
+function emptyStream($stub)
+{
+    $call = $stub->FullDuplexCall();
+    $call->writesDone();
+    hardAssert($call->read() === null, 'Server returned too many responses');
+    hardAssert($call->getStatus()->code === Grpc\STATUS_OK,
              'Call did not complete successfully');
 }
 
 /**
  * Run the cancel_after_begin test.
+ *
  * @param $stub Stub object that has service methods.
  */
-function cancelAfterBegin($stub) {
-  $call = $stub->StreamingInputCall();
-  $call->cancel();
-  list($result, $status) = $call->wait();
-  hardAssert($status->code === Grpc\STATUS_CANCELLED,
+function cancelAfterBegin($stub)
+{
+    $call = $stub->StreamingInputCall();
+    $call->cancel();
+    list($result, $status) = $call->wait();
+    hardAssert($status->code === Grpc\STATUS_CANCELLED,
              'Call status was not CANCELLED');
 }
 
 /**
  * Run the cancel_after_first_response test.
+ *
  * @param $stub Stub object that has service methods.
  */
-function cancelAfterFirstResponse($stub) {
-  $call = $stub->FullDuplexCall();
-  $request = new grpc\testing\StreamingOutputCallRequest();
-  $request->setResponseType(grpc\testing\PayloadType::COMPRESSABLE);
-  $response_parameters = new grpc\testing\ResponseParameters();
-  $response_parameters->setSize(31415);
-  $request->addResponseParameters($response_parameters);
-  $payload = new grpc\testing\Payload();
-  $payload->setBody(str_repeat("\0", 27182));
-  $request->setPayload($payload);
-
-  $call->write($request);
-  $response = $call->read();
-
-  $call->cancel();
-  hardAssert($call->getStatus()->code === Grpc\STATUS_CANCELLED,
+function cancelAfterFirstResponse($stub)
+{
+    $call = $stub->FullDuplexCall();
+    $request = new grpc\testing\StreamingOutputCallRequest();
+    $request->setResponseType(grpc\testing\PayloadType::COMPRESSABLE);
+    $response_parameters = new grpc\testing\ResponseParameters();
+    $response_parameters->setSize(31415);
+    $request->addResponseParameters($response_parameters);
+    $payload = new grpc\testing\Payload();
+    $payload->setBody(str_repeat("\0", 27182));
+    $request->setPayload($payload);
+
+    $call->write($request);
+    $response = $call->read();
+
+    $call->cancel();
+    hardAssert($call->getStatus()->code === Grpc\STATUS_CANCELLED,
              'Call status was not CANCELLED');
 }
 
-function timeoutOnSleepingServer($stub) {
-  $call = $stub->FullDuplexCall(array('timeout' => 1000));
-  $request = new grpc\testing\StreamingOutputCallRequest();
-  $request->setResponseType(grpc\testing\PayloadType::COMPRESSABLE);
-  $response_parameters = new grpc\testing\ResponseParameters();
-  $response_parameters->setSize(8);
-  $request->addResponseParameters($response_parameters);
-  $payload = new grpc\testing\Payload();
-  $payload->setBody(str_repeat("\0", 9));
-  $request->setPayload($payload);
-
-  $call->write($request);
-  $response = $call->read();
-
-  hardAssert($call->getStatus()->code === Grpc\STATUS_DEADLINE_EXCEEDED,
+function timeoutOnSleepingServer($stub)
+{
+    $call = $stub->FullDuplexCall(['timeout' => 1000]);
+    $request = new grpc\testing\StreamingOutputCallRequest();
+    $request->setResponseType(grpc\testing\PayloadType::COMPRESSABLE);
+    $response_parameters = new grpc\testing\ResponseParameters();
+    $response_parameters->setSize(8);
+    $request->addResponseParameters($response_parameters);
+    $payload = new grpc\testing\Payload();
+    $payload->setBody(str_repeat("\0", 9));
+    $request->setPayload($payload);
+
+    $call->write($request);
+    $response = $call->read();
+
+    hardAssert($call->getStatus()->code === Grpc\STATUS_DEADLINE_EXCEEDED,
              'Call status was not DEADLINE_EXCEEDED');
 }
 
-$args = getopt('', array('server_host:', 'server_port:', 'test_case:',
-                         'use_tls::', 'use_test_ca::',
-                         'server_host_override:', 'oauth_scope:',
-                         'default_service_account:'));
+$args = getopt('', ['server_host:', 'server_port:', 'test_case:',
+                    'use_tls::', 'use_test_ca::',
+                    'server_host_override:', 'oauth_scope:',
+                    'default_service_account:', ]);
 if (!array_key_exists('server_host', $args)) {
-  throw new Exception('Missing argument: --server_host is required');
+    throw new Exception('Missing argument: --server_host is required');
 }
 if (!array_key_exists('server_port', $args)) {
-  throw new Exception('Missing argument: --server_port is required');
+    throw new Exception('Missing argument: --server_port is required');
 }
 if (!array_key_exists('test_case', $args)) {
-  throw new Exception('Missing argument: --test_case is required');
+    throw new Exception('Missing argument: --test_case is required');
 }
 
 if ($args['server_port'] == 443) {
-  $server_address = $args['server_host'];
+    $server_address = $args['server_host'];
 } else {
-  $server_address = $args['server_host'] . ':' . $args['server_port'];
+    $server_address = $args['server_host'].':'.$args['server_port'];
 }
 
 $test_case = $args['test_case'];
 
 $host_override = 'foo.test.google.fr';
 if (array_key_exists('server_host_override', $args)) {
-  $host_override = $args['server_host_override'];
+    $host_override = $args['server_host_override'];
 }
 
 $use_tls = false;
 if (array_key_exists('use_tls', $args) &&
     $args['use_tls'] != 'false') {
-  $use_tls = true;
+    $use_tls = true;
 }
 
 $use_test_ca = false;
 if (array_key_exists('use_test_ca', $args) &&
     $args['use_test_ca'] != 'false') {
-  $use_test_ca = true;
+    $use_test_ca = true;
 }
 
 $opts = [];
 
 if ($use_tls) {
-  if ($use_test_ca) {
-    $ssl_credentials = Grpc\Credentials::createSsl(
-        file_get_contents(dirname(__FILE__) . '/../data/ca.pem'));
-  } else {
-    $ssl_credentials = Grpc\Credentials::createSsl();
-  }
-  $opts['credentials'] = $ssl_credentials;
-  $opts['grpc.ssl_target_name_override'] = $host_override;
+    if ($use_test_ca) {
+        $ssl_credentials = Grpc\Credentials::createSsl(
+        file_get_contents(dirname(__FILE__).'/../data/ca.pem'));
+    } else {
+        $ssl_credentials = Grpc\Credentials::createSsl();
+    }
+    $opts['credentials'] = $ssl_credentials;
+    $opts['grpc.ssl_target_name_override'] = $host_override;
 }
 
-if (in_array($test_case, array('service_account_creds',
-    'compute_engine_creds', 'jwt_token_creds'))) {
-  if ($test_case == 'jwt_token_creds') {
-    $auth_credentials = ApplicationDefaultCredentials::getCredentials();
-  } else {
-    $auth_credentials = ApplicationDefaultCredentials::getCredentials(
-      $args['oauth_scope']
-    );
-  }
-  $opts['update_metadata'] = $auth_credentials->getUpdateMetadataFunc();
+if (in_array($test_case, ['service_account_creds',
+    'compute_engine_creds', 'jwt_token_creds', ])) {
+    if ($test_case == 'jwt_token_creds') {
+        $auth_credentials = ApplicationDefaultCredentials::getCredentials();
+    } else {
+        $auth_credentials = ApplicationDefaultCredentials::getCredentials(
+            $args['oauth_scope']
+        );
+    }
+    $opts['update_metadata'] = $auth_credentials->getUpdateMetadataFunc();
 }
 
 if ($test_case == 'oauth2_auth_token') {
-  $auth_credentials = ApplicationDefaultCredentials::getCredentials(
-      $args['oauth_scope']
-  );
-  $token = $auth_credentials->fetchAuthToken();
-  $update_metadata =
-      function($metadata,
-               $authUri = null,
-               ClientInterface $client = null) use ($token) {
-        $metadata_copy = $metadata;
-        $metadata_copy[CredentialsLoader::AUTH_METADATA_KEY] =
-            array(sprintf("%s %s",
-                          $token['token_type'],
-                          $token['access_token']));
-        return $metadata_copy;
-      };
-  $opts['update_metadata'] = $update_metadata;
+    $auth_credentials = ApplicationDefaultCredentials::getCredentials(
+        $args['oauth_scope']
+    );
+    $token = $auth_credentials->fetchAuthToken();
+    $update_metadata =
+        function ($metadata,
+                  $authUri = null,
+                  ClientInterface $client = null) use ($token) {
+            $metadata_copy = $metadata;
+            $metadata_copy[CredentialsLoader::AUTH_METADATA_KEY] =
+                [sprintf('%s %s',
+                         $token['token_type'],
+                         $token['access_token'])];
+
+            return $metadata_copy;
+        };
+    $opts['update_metadata'] = $update_metadata;
 }
 
 $stub = new grpc\testing\TestServiceClient($server_address, $opts);
@@ -437,49 +470,49 @@ echo "Connecting to $server_address\n";
 echo "Running test case $test_case\n";
 
 switch ($test_case) {
-  case 'empty_unary':
-    emptyUnary($stub);
-    break;
-  case 'large_unary':
-    largeUnary($stub);
-    break;
-  case 'client_streaming':
-    clientStreaming($stub);
-    break;
-  case 'server_streaming':
-    serverStreaming($stub);
-    break;
-  case 'ping_pong':
-    pingPong($stub);
-    break;
-  case 'empty_stream':
-    emptyStream($stub);
-    break;
-  case 'cancel_after_begin':
-    cancelAfterBegin($stub);
-    break;
-  case 'cancel_after_first_response':
-    cancelAfterFirstResponse($stub);
-    break;
-  case 'timeout_on_sleeping_server':
-    timeoutOnSleepingServer($stub);
-    break;
-  case 'service_account_creds':
-    serviceAccountCreds($stub, $args);
-    break;
-  case 'compute_engine_creds':
-    computeEngineCreds($stub, $args);
-    break;
-  case 'jwt_token_creds':
-    jwtTokenCreds($stub, $args);
-    break;
-  case 'oauth2_auth_token':
-    oauth2AuthToken($stub, $args);
-    break;
-  case 'per_rpc_creds':
-    perRpcCreds($stub, $args);
-    break;
-  default:
-    echo "Unsupported test case $test_case\n";
-    exit(1);
+    case 'empty_unary':
+        emptyUnary($stub);
+        break;
+    case 'large_unary':
+        largeUnary($stub);
+        break;
+    case 'client_streaming':
+        clientStreaming($stub);
+        break;
+    case 'server_streaming':
+        serverStreaming($stub);
+        break;
+    case 'ping_pong':
+        pingPong($stub);
+        break;
+    case 'empty_stream':
+        emptyStream($stub);
+        break;
+    case 'cancel_after_begin':
+        cancelAfterBegin($stub);
+        break;
+    case 'cancel_after_first_response':
+        cancelAfterFirstResponse($stub);
+        break;
+    case 'timeout_on_sleeping_server':
+        timeoutOnSleepingServer($stub);
+        break;
+    case 'service_account_creds':
+        serviceAccountCreds($stub, $args);
+        break;
+    case 'compute_engine_creds':
+        computeEngineCreds($stub, $args);
+        break;
+    case 'jwt_token_creds':
+        jwtTokenCreds($stub, $args);
+        break;
+    case 'oauth2_auth_token':
+        oauth2AuthToken($stub, $args);
+        break;
+    case 'per_rpc_creds':
+        perRpcCreds($stub, $args);
+        break;
+    default:
+        echo "Unsupported test case $test_case\n";
+        exit(1);
 }