Add Initial teamcity support

src/Subscribers/EnsureTeamCityEnabled.php

@@ -0,0 +1,46 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Pest\Subscribers;
+
+use Pest\Logging\TeamCity\Converter;
+use Pest\Logging\TeamCity\TeamCityLogger;
+use Pest\TestSuite;
+use PHPUnit\Event\TestRunner\Configured;
+use PHPUnit\Event\TestRunner\ConfiguredSubscriber;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Output\OutputInterface;
+
+/**
+ * @internal
+ */
+final class EnsureTeamCityEnabled implements ConfiguredSubscriber
+{
+    public function __construct(
+        private readonly OutputInterface $output,
+        private readonly InputInterface $input,
+        private readonly TestSuite $testSuite,
+    ) {
+    }
+
+    /**
+     * Runs the subscriber.
+     */
+    public function notify(Configured $event): void
+    {
+        if (! $this->input->hasParameterOption('--teamcity')) {
+            return;
+        }
+
+        $flowId = getenv('FLOW_ID');
+        $flowId = is_string($flowId) ? (int) $flowId : getmypid();
+
+        new TeamCityLogger(
+            $this->output,
+            new Converter($this->testSuite->rootPath),
+            $flowId === false ? null : $flowId,
+            getenv('COLLISION_IGNORE_DURATION') !== false
+        );
+    }
+}