add pgsql test

tests/swoole_pdo_pgsql/long_running_pgsql_test.phpt

@@ -0,0 +1,46 @@
+--TEST--
+swoole_pdo_pgsql: long running pgsql test
+--SKIPIF--
+<?php require __DIR__ . '/../include/skipif.inc'; ?>
+--FILE--
+<?php
+require __DIR__ . '/../include/bootstrap.php';
+require __DIR__ . '/pdo_pgsql.inc';
+
+use Swoole\Coroutine;
+use Swoole\Coroutine\WaitGroup;
+use Swoole\Coroutine\Channel;
+use function Swoole\Coroutine\run;
+
+Coroutine::set(['hook_flags' => SWOOLE_HOOK_PDO_PGSQL]);
+run(function() {
+    $waitGroup = new WaitGroup();
+    $channel = new Channel(1);
+    Coroutine::create(function() use ($waitGroup, $channel) {
+        $waitGroup->add();
+        $pdo = pdo_pgsql_test_inc::create();
+        $pdo->query("SELECT pg_sleep(5);");
+        $waitGroup->done();
+        echo 'DONE' . PHP_EOL;
+    });
+
+    Coroutine::create(function() use ($waitGroup, $channel) {
+        $waitGroup->add();
+        $result = $channel->pop(2);
+        if (!$result) {
+            echo 'channel pop timeout' . PHP_EOL;
+        }
+        $waitGroup->done();
+    });
+
+    var_dump(1);
+    Coroutine::sleep(1);
+    var_dump(2);
+    $waitGroup->wait();
+});
+?>
+--EXPECTF--
+int(1)
+int(2)
+channel pop timeout
+DONE