Tests with nsqd and utilities

tests/Nsqd.php

@@ -0,0 +1,95 @@
+<?php
+
+declare(strict_types=1);
+
+use Symfony\Component\Filesystem\Filesystem;
+use Symfony\Component\Process\Process;
+
+final class Nsqd
+{
+    public Process $process;
+
+    public string $address;
+
+    private static Filesystem $fs;
+
+    public function __construct(
+        public readonly string $dataPath,
+        public readonly int $httpPort,
+        public readonly int $tcpPort,
+    ) {
+        self::$fs ??= new Filesystem();
+        self::$fs->mkdir($this->dataPath);
+
+        $nsqd = new Process([
+            './nsqd',
+            sprintf('-data-path=%s', $this->dataPath),
+            sprintf('-http-address=0.0.0.0:%s', $this->httpPort),
+            sprintf('-tcp-address=0.0.0.0:%s', $this->tcpPort),
+            '-log-level=debug',
+        ], dirname(__DIR__).'/bin');
+
+        $nsqd->start();
+
+        while (false === @fsockopen('localhost', $this->tcpPort)) {
+            if (!$nsqd->isRunning()) {
+                throw new RuntimeException($nsqd->getErrorOutput());
+            }
+
+            usleep(10000);
+        }
+
+        $this->process = $nsqd;
+        $this->address = sprintf('tcp://localhost:%s', $this->tcpPort);
+    }
+
+    public static function create(): self
+    {
+        do {
+            $dir = sprintf('/tmp/%s', bin2hex(random_bytes(5)));
+        } while (is_dir($dir));
+
+        return new self(
+            $dir,
+            findFreePort(),
+            findFreePort(),
+        );
+    }
+
+    public function tail(string $topic, string $channel, int $messages): Process
+    {
+        $tail = new Process(
+            [
+                './nsq_tail',
+                sprintf('-nsqd-tcp-address=localhost:%s', $this->tcpPort),
+                sprintf('-topic=%s', $topic),
+                sprintf('-channel=%s', $channel),
+                sprintf('-n=%s', $messages),
+                '-print-topic',
+            ],
+            dirname(__DIR__).'/bin',
+            timeout: 10,
+        );
+
+        $tail->start();
+
+        return $tail;
+    }
+
+    public function __destruct()
+    {
+        $this->process->stop();
+        self::$fs->remove($this->dataPath);
+    }
+}
+
+function findFreePort(): int
+{
+    $sock = socket_create_listen(0);
+    assert($sock instanceof \Socket);
+
+    socket_getsockname($sock, $addr, $port);
+    socket_close($sock);
+
+    return $port;
+}