added test for #343 (#346)

tests/swoole_coroutine/file_get_content.phpt

@@ -0,0 +1,54 @@
+--TEST--
+swoole_coroutine: file_get_content
+--SKIPIF--
+<?php require __DIR__ . '/../include/skipif.inc'; ?>
+--FILE--
+<?php declare(strict_types = 1);
+require __DIR__ . '/../include/bootstrap.php';
+$pm = new SwooleTest\ProcessManager;
+$pm->useConstantPorts = true;
+$pm->initFreePorts();
+
+use OpenSwoole\Constant;
+use OpenSwoole\Http\Request;
+use OpenSwoole\Http\Response;
+use OpenSwoole\Http\Server;
+use OpenSwoole\Runtime;
+use OpenSwoole\Util;
+
+$pm->parentFunc = function (int $pid) use ($pm) {
+    co::run(function () use ($pm) {
+    	$data = httpGetBody("http://127.0.0.1:{$pm->getFreePort()}/");
+    	echo $data;
+    });
+    echo "DONE\n";
+    unlink('FILENAME');
+    $pm->kill();
+};
+$pm->childFunc = function () use ($pm) {
+	$Server = new Server('127.0.0.1', $pm->getFreePort());
+	$Server->set([
+	  'reactor_num' => Util::getCPUNum() * 1,
+	  'hook_flags' => Runtime::HOOK_ALL,
+	  'log_level' => Constant::LOG_DEBUG,
+	  'log_file' => '/proc/1/fd/1',
+	  'tcp_fastopen' => true,
+	  'open_tcp_keepalive' => true,
+	  'http_compression' => true,
+	  'http_compression_level' => 6,
+	  'open_http2_protocol' => true,
+	  'compression_min_length' => 128,
+	  'backlog' => 100000,
+	  'reload_async' => false,
+	]);
+	$Server->on('Request', static function (Request $Request, Response $Response): void {
+	  file_put_contents('FILENAME', 'CONTENTS');
+	  $Response->end(file_get_contents('FILENAME'));
+	});
+	$Server->start();
+};
+$pm->childFirst();
+$pm->run();
+?>
+--EXPECTF--
+CONTENTSDONE