[go_router] Doesn't support "/abc", "/ABC" as two different paths

What package does this bug report belong to?

go_router

What target platforms are you seeing this bug on?

Web

Have you already upgraded your packages?

Yes

Dependency versions

pubspec.lock

packages:
  go_router:
    dependency: "direct main"
    description:
      name: go_router
      sha256: "0b1e06223bee260dee31a171fb1153e306907563a0b0225e8c1733211911429a"
      url: "https://pub.dev"
    source: hosted
    version: "15.1.2"

Steps to reproduce

go_router configuration:

final GoRouter _router = GoRouter(
  initialLocation: '/',
  routes: <RouteBase>[
    GoRoute(path: '/', builder: (_, _) => Home(),),
    GoRoute(path: '/abc', builder: (_, _) => Home(),),
    GoRoute(path: '/ABC', builder: (_, _) => Home(),),
  ],
);

Run the app.
Open "/abc", it should work.
Open "/ABC", throws an exception.

Expected results

The part of the URL after the domain name (the "path" or "directory" part) is generally case-sensitive on most web servers, especially those running on Unix-like operating systems, so expectation is that all three endpoints should render Home().

Actual results

"/ABC" throws

======== Exception caught by widgets library =======================================================
The following assertion was thrown building DefaultSelectionStyle:
Assertion failed: file:///C:/Users/user/AppData/Local/Pub/Cache/hosted/pub.dev/go_router-15.1.2/lib/src/match.dart:245:12
uriPathToCompare.startsWith(newMatchedLocationToCompare)
is not true

Code sample

final GoRouter _router = GoRouter(
  initialLocation: '/',
  routes: <RouteBase>[
    GoRoute(path: '/', builder: (_, _) => Home(),),
    GoRoute(path: '/abc', builder: (_, _) => Home(),),
    GoRoute(path: '/ABC', builder: (_, _) => Home(),),
  ],
);

Screenshots or Videos

Screenshots / Video demonstration

Logs

======== Exception caught by widgets library =======================================================
The following assertion was thrown building DefaultSelectionStyle:
Assertion failed: file:///C:/Users/user/AppData/Local/Pub/Cache/hosted/pub.dev/go_router-15.1.2/lib/src/match.dart:245:12
uriPathToCompare.startsWith(newMatchedLocationToCompare)
is not true

Flutter Doctor output

Doctor output

Doctor summary (to see all details, run flutter doctor -v):
[√] Flutter (Channel stable, 3.32.0, on Microsoft Windows [Version 10.0.22631.5189], locale en-US)
[√] Windows Version (11 Pro 64-bit, 23H2, 2009)
[√] Android toolchain - develop for Android devices (Android SDK version 34.0.0)
[√] Chrome - develop for the web
[√] Android Studio (version 2024.3.2)
[√] IntelliJ IDEA Community Edition (version 2023.1)
[√] VS Code (version 1.100.2)
[√] Connected device (3 available)
[√] Network resources

@deegoy2

@deegoy2
I tried with below runnable code sample with which I didn't see the reported error. Please provide updated code that triggers the error. I tried with latest stable version (3.32.1).

runnable code


import 'package:flutter/material.dart';
import 'package:go_router/go_router.dart';

void main() {
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  @override
  Widget build(BuildContext context) {
    return MaterialApp.router(routerConfig: router);
  }
}


final router = GoRouter(
  initialLocation: '/',
  routes: <RouteBase>[
    GoRoute(path: '/', builder: (_, _) => HomeScreen(),),
    GoRoute(path: '/abc', builder: (_, _) => HomeScreen(),),
    GoRoute(path: '/ABC', builder: (_, _) => HomeScreen(),),
  ],
);


class HomeScreen extends StatefulWidget {

  @override
  State<HomeScreen> createState() => _HomeScreenState();

}

class _HomeScreenState extends State<HomeScreen> {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: Center(
        child: Text('test')
      ),
    );
  }
}

@darshankawar

@darshankawar

try this

navigate to "lower case" and observe the error
cc @deegoy2 in case I missed something

@iapicca

Thank you @iapicca, your example shows the error for nested routes.
Created this to show the same error for multiple base routes.

Thanks for the upated repos. Using below one, I was able to replicate the reported behavior on latest sdk versions.

runnable code


import 'package:flutter/material.dart';
import 'package:go_router/go_router.dart';

void main() => runApp(const MyApp());

final _router = GoRouter(
  routes: [
    GoRoute(
      path: '/',
      builder: (context, state) => const HomePage(),
      routes: [
        GoRoute(path: 'Page', builder: (context, state) => const Page1()),
        GoRoute(path: 'page', builder: (context, state) => const Page2()),
      ],
    ),
  ],
);

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  @override
  Widget build(context) => MaterialApp.router(routerConfig: _router);
}

class HomePage extends StatelessWidget {
  const HomePage({super.key});

  @override
  Widget build(context) => Scaffold(
    appBar: AppBar(title: const Text('Home')),
    body: Center(
      child: Column(
        mainAxisAlignment: MainAxisAlignment.center,
        children: [
          ElevatedButton(
            onPressed: () => context.go('/Page'),
            child: const Text('Upper Case'),
          ),
          const SizedBox(height: 40),
          ElevatedButton(
            onPressed: () => context.go('/page'),
            child: const Text('Lower Case'),
          ),
        ],
      ),
    ),
  );
}

class Page1 extends StatelessWidget {
  const Page1({super.key});

  @override
  Widget build(context) => Scaffold(
    appBar: AppBar(title: const Text('Page')),
    body: const Center(
      child: FlutterLogo(
        size: 200,
        style: FlutterLogoStyle.stacked,
        textColor: Colors.red,
      ),
    ),
  );
}

class Page2 extends StatelessWidget {
  const Page2({super.key});

  @override
  Widget build(context) => Scaffold(
    appBar: AppBar(title: const Text('page')),
    body: const Center(
      child: FlutterLogo(
        size: 200,
        style: FlutterLogoStyle.stacked,
        textColor: Colors.green,
      ),
    ),
  );
}

stable : 3.32.1
master : 3.33.0-1.0.pre.305

[go_router_builder] Skip case sensitive test (#9444)

[go_router] Fix routing to treat URLs with different cases (e.g., `/H…

@ValentinVignal

that was really fast <3 @ValentinVignal

[go_router_builder] Skip case sensitive test (flutter#9444)

[go_router] Fix routing to treat URLs with different cases (e.g., `/H…

This thread has been automatically locked since there has not been any recent activity after it was closed. If you are still experiencing a similar issue, please open a new bug, including the output of flutter doctor -v and a minimal reproduction of the issue.

[go_router] Fix routing to treat URLs with different cases (e.g., `/H…

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[go_router] Doesn't support "/abc", "/ABC" as two different paths #169809

What package does this bug report belong to?

What target platforms are you seeing this bug on?

Have you already upgraded your packages?

Dependency versions

Steps to reproduce

Expected results

Actual results

Code sample

Screenshots or Videos

Logs

Flutter Doctor output

4 remaining items

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[go_router] Doesn't support "/abc", "/ABC" as two different paths #169809

Description

What package does this bug report belong to?

What target platforms are you seeing this bug on?

Have you already upgraded your packages?

Dependency versions

Steps to reproduce

Expected results

Actual results

Code sample

Screenshots or Videos

Logs

Flutter Doctor output

Activity

darshankawar commented on Jun 2, 2025

iapicca commented on Jun 2, 2025

deegoy2 commented on Jun 2, 2025

darshankawar commented on Jun 3, 2025

4 remaining items

iapicca commented on Jun 24, 2025

github-actions commented on Jul 9, 2025

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