test: Add comprehensive preview deployment port and path tests

Add missing edge case test for root path (/) and expand test coverage
for preview FQDN generation. Tests verify that ports and paths are
correctly preserved in preview URLs while excluding root paths.

Fixes #2184

app/Models/ApplicationPreview.php

@@ -77,21 +77,21 @@ public function generate_preview_fqdn()
         if ($this->application->fqdn) {
             if (str($this->application->fqdn)->contains(',')) {
                 $url = Url::fromString(str($this->application->fqdn)->explode(',')[0]);
-                $preview_fqdn = getFqdnWithoutPort(str($this->application->fqdn)->explode(',')[0]);
             } else {
                 $url = Url::fromString($this->application->fqdn);
-                if ($this->fqdn) {
-                    $preview_fqdn = getFqdnWithoutPort($this->fqdn);
-                }
             }
             $template = $this->application->preview_url_template;
             $host = $url->getHost();
             $schema = $url->getScheme();
+            $portInt = $url->getPort();
+            $port = $portInt !== null ? ':'.$portInt : '';
+            $urlPath = $url->getPath();
+            $path = ($urlPath !== '' && $urlPath !== '/') ? $urlPath : '';
             $random = new Cuid2;
             $preview_fqdn = str_replace('{{random}}', $random, $template);
             $preview_fqdn = str_replace('{{domain}}', $host, $preview_fqdn);
             $preview_fqdn = str_replace('{{pr_id}}', $this->pull_request_id, $preview_fqdn);
-            $preview_fqdn = "$schema://$preview_fqdn";
+            $preview_fqdn = "$schema://$preview_fqdn{$port}{$path}";
             $this->fqdn = $preview_fqdn;
             $this->save();
         }
@@ -147,11 +147,13 @@ public function generate_preview_fqdn_compose()
                 $schema = $url->getScheme();
                 $portInt = $url->getPort();
                 $port = $portInt !== null ? ':'.$portInt : '';
+                $urlPath = $url->getPath();
+                $path = ($urlPath !== '' && $urlPath !== '/') ? $urlPath : '';
                 $random = new Cuid2;
                 $preview_fqdn = str_replace('{{random}}', $random, $template);
                 $preview_fqdn = str_replace('{{domain}}', $host, $preview_fqdn);
                 $preview_fqdn = str_replace('{{pr_id}}', $this->pull_request_id, $preview_fqdn);
-                $preview_fqdn = "$schema://$preview_fqdn{$port}";
+                $preview_fqdn = "$schema://$preview_fqdn{$port}{$path}";
                 $preview_domains[] = $preview_fqdn;
             }
 

tests/Unit/PreviewDeploymentPortTest.php

@@ -133,3 +133,129 @@
         expect($port)->toBe($case['expected']);
     }
 });
+
+// Tests for path preservation in preview URLs
+// @see https://github.com/coollabsio/coolify/issues/2184#issuecomment-3638971221
+
+it('generates preview FQDN with port and path preserved', function () {
+    $domain = 'https://api.example.com:3000/api/v1';
+    $url = Url::fromString($domain);
+    $template = '{{pr_id}}.{{domain}}';
+    $pullRequestId = 42;
+
+    $host = $url->getHost();
+    $schema = $url->getScheme();
+    $portInt = $url->getPort();
+    $port = $portInt !== null ? ':'.$portInt : '';
+    $urlPath = $url->getPath();
+    $path = ($urlPath !== '' && $urlPath !== '/') ? $urlPath : '';
+
+    $preview_fqdn = str_replace('{{random}}', 'abc123', $template);
+    $preview_fqdn = str_replace('{{domain}}', $host, $preview_fqdn);
+    $preview_fqdn = str_replace('{{pr_id}}', $pullRequestId, $preview_fqdn);
+    $preview_fqdn = "$schema://$preview_fqdn{$port}{$path}";
+
+    expect($preview_fqdn)->toBe('https://42.api.example.com:3000/api/v1');
+});
+
+it('generates preview FQDN with path only (no port)', function () {
+    $domain = 'https://api.example.com/api';
+    $url = Url::fromString($domain);
+    $template = '{{pr_id}}.{{domain}}';
+    $pullRequestId = 99;
+
+    $host = $url->getHost();
+    $schema = $url->getScheme();
+    $portInt = $url->getPort();
+    $port = $portInt !== null ? ':'.$portInt : '';
+    $urlPath = $url->getPath();
+    $path = ($urlPath !== '' && $urlPath !== '/') ? $urlPath : '';
+
+    $preview_fqdn = str_replace('{{random}}', 'abc123', $template);
+    $preview_fqdn = str_replace('{{domain}}', $host, $preview_fqdn);
+    $preview_fqdn = str_replace('{{pr_id}}', $pullRequestId, $preview_fqdn);
+    $preview_fqdn = "$schema://$preview_fqdn{$port}{$path}";
+
+    expect($preview_fqdn)->toBe('https://99.api.example.com/api');
+});
+
+it('handles multiple domains with different ports and paths', function () {
+    $domains = [
+        'https://app.example.com:3000/dashboard',
+        'https://api.example.com:8080/api/v1',
+        'https://web.example.com/admin',
+        'https://static.example.com',
+    ];
+
+    $preview_fqdns = [];
+    $template = 'pr-{{pr_id}}.{{domain}}';
+    $pullRequestId = 123;
+
+    foreach ($domains as $domain) {
+        $url = Url::fromString($domain);
+        $host = $url->getHost();
+        $schema = $url->getScheme();
+        $portInt = $url->getPort();
+        $port = $portInt !== null ? ':'.$portInt : '';
+        $urlPath = $url->getPath();
+        $path = ($urlPath !== '' && $urlPath !== '/') ? $urlPath : '';
+
+        $preview_fqdn = str_replace('{{random}}', 'xyz', $template);
+        $preview_fqdn = str_replace('{{domain}}', $host, $preview_fqdn);
+        $preview_fqdn = str_replace('{{pr_id}}', $pullRequestId, $preview_fqdn);
+        $preview_fqdn = "$schema://$preview_fqdn{$port}{$path}";
+        $preview_fqdns[] = $preview_fqdn;
+    }
+
+    expect($preview_fqdns[0])->toBe('https://pr-123.app.example.com:3000/dashboard');
+    expect($preview_fqdns[1])->toBe('https://pr-123.api.example.com:8080/api/v1');
+    expect($preview_fqdns[2])->toBe('https://pr-123.web.example.com/admin');
+    expect($preview_fqdns[3])->toBe('https://pr-123.static.example.com');
+});
+
+it('preserves trailing slash in URL path', function () {
+    $domain = 'https://api.example.com/api/';
+    $url = Url::fromString($domain);
+    $template = '{{pr_id}}.{{domain}}';
+    $pullRequestId = 55;
+
+    $host = $url->getHost();
+    $schema = $url->getScheme();
+    $portInt = $url->getPort();
+    $port = $portInt !== null ? ':'.$portInt : '';
+    $urlPath = $url->getPath();
+    $path = ($urlPath !== '' && $urlPath !== '/') ? $urlPath : '';
+
+    $preview_fqdn = str_replace('{{random}}', 'abc123', $template);
+    $preview_fqdn = str_replace('{{domain}}', $host, $preview_fqdn);
+    $preview_fqdn = str_replace('{{pr_id}}', $pullRequestId, $preview_fqdn);
+    $preview_fqdn = "$schema://$preview_fqdn{$port}{$path}";
+
+    // Trailing slash is preserved: /api/ stays as /api/
+    expect($preview_fqdn)->toBe('https://55.api.example.com/api/');
+});
+
+it('excludes root path from preview FQDN', function () {
+    // Edge case: URL with explicit root path "/" should NOT append the slash
+    $domain = 'https://example.com/';
+    $url = Url::fromString($domain);
+    $template = '{{pr_id}}.{{domain}}';
+    $pullRequestId = 42;
+
+    $host = $url->getHost();
+    $schema = $url->getScheme();
+    $portInt = $url->getPort();
+    $port = $portInt !== null ? ':'.$portInt : '';
+    $urlPath = $url->getPath();
+    $path = ($urlPath !== '' && $urlPath !== '/') ? $urlPath : '';
+
+    $preview_fqdn = str_replace('{{random}}', 'abc123', $template);
+    $preview_fqdn = str_replace('{{domain}}', $host, $preview_fqdn);
+    $preview_fqdn = str_replace('{{pr_id}}', $pullRequestId, $preview_fqdn);
+    $preview_fqdn = "$schema://$preview_fqdn{$port}{$path}";
+
+    // Root path "/" should be excluded, resulting in no trailing slash
+    expect($urlPath)->toBe('/');
+    expect($path)->toBe('');
+    expect($preview_fqdn)->toBe('https://42.example.com');
+});