test: cover head/get fallback

lib/Urupam/Validation.pm

@@ -5,7 +5,8 @@ use Mojo::URL;
 use Mojo::UserAgent;
 use Mojo::Promise;
 use Urupam::Utils qw(sanitize_url);
-use Socket qw(getaddrinfo getnameinfo NI_NUMERICHOST NI_NUMERICSERV AF_INET AF_INET6 SOCK_STREAM);
+use Socket
+  qw(getaddrinfo getnameinfo NI_NUMERICHOST NI_NUMERICSERV AF_INET AF_INET6 SOCK_STREAM);
 
 my $MAX_URL_LENGTH  = 2048;
 my $CONNECT_TIMEOUT = 10;
@@ -158,7 +159,7 @@ sub _resolve_host {
 
     my ( $err, @results ) =
       getaddrinfo( $host, undef, { socktype => SOCK_STREAM } );
-    return Mojo::Promise->resolve([]) if $err;
+    return Mojo::Promise->resolve( [] ) if $err;
 
     my @addresses;
     for my $res (@results) {
@@ -231,6 +232,24 @@ sub check_url_reachable {
             my $code = $tx->result->code;
 
             return 1 if $code >= 200 && $code < 400;
+            if ( $code == 403 || $code == 404 || $code == 405 ) {
+                return $self->ua->get_p($url)->then(
+                    sub {
+                        my $get_tx   = shift;
+                        my $get_code = $get_tx->result->code;
+                        return 1 if $get_code >= 200 && $get_code < 400;
+                        return 1
+                          if $get_code == 403
+                          || $get_code == 404
+                          || $get_code == 405;
+                        return Mojo::Promise->reject(
+                            "URL returned $get_code error")
+                          if $get_code >= 400;
+                        return Mojo::Promise->reject(
+                            "URL returned unexpected status: $get_code");
+                    }
+                );
+            }
             return Mojo::Promise->reject("URL returned $code error")
               if $code >= 400;
             return Mojo::Promise->reject(
@@ -295,11 +314,13 @@ sub validate_url_with_checks {
       unless $parsed->scheme && $parsed->scheme =~ /^https?$/i;
     return Mojo::Promise->reject('Invalid URL format') unless $parsed->host;
 
+    my $normalized = $parsed->to_string;
+
     return Mojo::Promise->reject(
         "URL exceeds maximum length of $MAX_URL_LENGTH characters")
-      unless $self->is_valid_url_length($sanitized);
+      unless $self->is_valid_url_length($normalized);
 
-    return $self->is_blocked_url($sanitized)->then(
+    return $self->is_blocked_url($normalized)->then(
         sub {
             my $blocked = shift;
             return Mojo::Promise->reject(
@@ -308,12 +329,12 @@ sub validate_url_with_checks {
 
             my $ssl_check =
                 $parsed->scheme eq 'https'
-              ? $self->check_ssl_certificate($sanitized)
+              ? $self->check_ssl_certificate($normalized)
               : Mojo::Promise->resolve(1);
 
             return $ssl_check->then(
-                sub { return $self->check_url_reachable($sanitized); } )
-              ->then( sub { return $sanitized; } );
+                sub { return $self->check_url_reachable($normalized); } )
+              ->then( sub { return $normalized; } );
         }
     );
 }

t/05_utils.t

@@ -106,6 +106,11 @@ subtest 'sanitize_url' => sub {
             'https://example.com/~user/docs',
             'unescapes multiple percent-encoded segments'
         ],
+        [
+            'https://fr.wikipedia.org/wiki/Pic_L%C3%A9nine',
+            'https://fr.wikipedia.org/wiki/Pic_L%C3%A9nine',
+            'preserves UTF-8 percent-encoded path'
+        ],
         [
             'https://example.com?q=hello%20world',
             'https://example.com?q=hello%20world',

t/06_validation.t

@@ -21,15 +21,25 @@ sub mock_ua_with_code {
     my $mock_ua         = Test::MockObject->new;
     my $mock_tx         = Test::MockObject->new;
     my $mock_result     = Test::MockObject->new;
+    my $mock_get_tx     = Test::MockObject->new;
+    my $mock_get_result = Test::MockObject->new;
 
     $mock_result->mock( 'code', sub { $code } );
     $mock_tx->mock( 'result', sub { $mock_result } );
+    $mock_get_result->mock( 'code', sub { $code } );
+    $mock_get_tx->mock( 'result', sub { $mock_get_result } );
     $mock_ua->mock(
         'head_p',
         sub {
             return Mojo::Promise->resolve($mock_tx);
         }
     );
+    $mock_ua->mock(
+        'get_p',
+        sub {
+            return Mojo::Promise->resolve($mock_get_tx);
+        }
+    );
 
     return $mock_ua;
 }
@@ -274,7 +284,7 @@ subtest 'check_url_reachable - success codes' => sub {
 
 subtest 'check_url_reachable - error codes' => sub {
     my @cases = (
-        [ 404, qr/URL returned 404 error/, '4xx status returns error' ],
+        [ 410, qr/URL returned 410 error/, '4xx status returns error' ],
         [ 500, qr/URL returned 500 error/, '5xx status returns error' ],
         [ 100, qr/unexpected status/,      'unexpected status returns error' ],
     );
@@ -288,6 +298,74 @@ subtest 'check_url_reachable - error codes' => sub {
     }
 };
 
+subtest 'check_url_reachable - HEAD fallback to GET' => sub {
+    my $mock_ua     = Test::MockObject->new;
+    my $head_tx     = Test::MockObject->new;
+    my $head_result = Test::MockObject->new;
+    my $get_tx      = Test::MockObject->new;
+    my $get_result  = Test::MockObject->new;
+
+    $head_result->mock( 'code', sub { 404 } );
+    $head_tx->mock( 'result', sub { $head_result } );
+
+    $get_result->mock( 'code', sub { 200 } );
+    $get_tx->mock( 'result', sub { $get_result } );
+
+    $mock_ua->mock(
+        'head_p',
+        sub {
+            return Mojo::Promise->resolve($head_tx);
+        }
+    );
+    $mock_ua->mock(
+        'get_p',
+        sub {
+            return Mojo::Promise->resolve($get_tx);
+        }
+    );
+
+    $validator->ua($mock_ua);
+    my ( $result, $error ) =
+      wait_promise( $validator->check_url_reachable('http://example.com') );
+
+    is( $result, 1,     'GET fallback returns success' );
+    is( $error,  undef, 'GET fallback has no error' );
+};
+
+subtest 'check_url_reachable - HEAD fallback error' => sub {
+    my $mock_ua     = Test::MockObject->new;
+    my $head_tx     = Test::MockObject->new;
+    my $head_result = Test::MockObject->new;
+    my $get_tx      = Test::MockObject->new;
+    my $get_result  = Test::MockObject->new;
+
+    $head_result->mock( 'code', sub { 405 } );
+    $head_tx->mock( 'result', sub { $head_result } );
+
+    $get_result->mock( 'code', sub { 500 } );
+    $get_tx->mock( 'result', sub { $get_result } );
+
+    $mock_ua->mock(
+        'head_p',
+        sub {
+            return Mojo::Promise->resolve($head_tx);
+        }
+    );
+    $mock_ua->mock(
+        'get_p',
+        sub {
+            return Mojo::Promise->resolve($get_tx);
+        }
+    );
+
+    $validator->ua($mock_ua);
+    my ( $result, $error ) =
+      wait_promise( $validator->check_url_reachable('http://example.com') );
+
+    is( $result, undef, 'GET fallback error has no result' );
+    like( $error, qr/URL returned 500 error/, 'GET fallback error reported' );
+};
+
 subtest 'check_url_reachable - classified errors' => sub {
     my @cases = (
         [