[go_router_builder] Add caseSensitive to TypedGoRoute (#9096)

First part of flutter/flutter#167277

## Pre-Review Checklist

[^1]: Regular contributors who have demonstrated familiarity with the repository guidelines only need to comment if the PR is not auto-exempted by repo tooling.

Author: ValentinVignal

packages/go_router/CHANGELOG.md

@@ -1,3 +1,7 @@
+## 15.1.0
+
+- Adds `caseSensitive` to `TypedGoRoute`.
+
 ## 15.0.0
 
 - **BREAKING CHANGE**

packages/go_router/lib/src/route_data.dart

@@ -369,6 +369,7 @@ class TypedGoRoute<T extends GoRouteData> extends TypedRoute<T> {
     required this.path,
     this.name,
     this.routes = const <TypedRoute<RouteData>>[],
+    this.caseSensitive = true,
   });
 
   /// The path that corresponds to this route.
@@ -390,6 +391,17 @@ class TypedGoRoute<T extends GoRouteData> extends TypedRoute<T> {
   ///
   /// See [RouteBase.routes].
   final List<TypedRoute<RouteData>> routes;
+
+  /// Determines whether the route matching is case sensitive.
+  ///
+  /// When `true`, the path must match the specified case. For example,
+  /// a route with `path: '/family/:fid'` will not match `/FaMiLy/f2`.
+  ///
+  /// When `false`, the path matching is case insensitive.  The route
+  /// with `path: '/family/:fid'` will match `/FaMiLy/f2`.
+  ///
+  /// Defaults to `true`.
+  final bool caseSensitive;
 }
 
 /// A superclass for each typed shell route descendant

packages/go_router/pubspec.yaml

@@ -1,7 +1,7 @@
 name: go_router
 description: A declarative router for Flutter based on Navigation 2 supporting
   deep linking, data-driven routes and more
-version: 15.0.0
+version: 15.1.0
 repository: https://github.com/flutter/packages/tree/main/packages/go_router
 issue_tracker: https://github.com/flutter/flutter/issues?q=is%3Aissue+is%3Aopen+label%3A%22p%3A+go_router%22
 

packages/go_router/test/route_data_test.dart

@@ -492,4 +492,50 @@ void main() {
       expect(find.byKey(const Key('buildPage')), findsNothing);
     },
   );
+  test('TypedGoRoute with default parameters', () {
+    const TypedGoRoute<GoRouteData> typedGoRoute = TypedGoRoute<GoRouteData>(
+      path: '/path',
+    );
+
+    expect(typedGoRoute.path, '/path');
+    expect(typedGoRoute.name, isNull);
+    expect(typedGoRoute.caseSensitive, true);
+    expect(typedGoRoute.routes, isEmpty);
+  });
+
+  test('TypedGoRoute with provided parameters', () {
+    const TypedGoRoute<GoRouteData> typedGoRoute = TypedGoRoute<GoRouteData>(
+      path: '/path',
+      name: 'name',
+      caseSensitive: false,
+      routes: <TypedRoute<RouteData>>[
+        TypedGoRoute<GoRouteData>(
+          path: 'sub-path',
+          name: 'subName',
+          caseSensitive: false,
+        ),
+      ],
+    );
+
+    expect(typedGoRoute.path, '/path');
+    expect(typedGoRoute.name, 'name');
+    expect(typedGoRoute.caseSensitive, false);
+    expect(typedGoRoute.routes, hasLength(1));
+    expect(
+      typedGoRoute.routes.single,
+      isA<TypedGoRoute<GoRouteData>>()
+          .having((TypedGoRoute<GoRouteData> route) => route.path, 'path',
+              'sub-path')
+          .having(
+            (TypedGoRoute<GoRouteData> route) => route.name,
+            'name',
+            'subName',
+          )
+          .having(
+            (TypedGoRoute<GoRouteData> route) => route.caseSensitive,
+            'caseSensitive',
+            false,
+          ),
+    );
+  });
 }