[IMP] router: implement redirect feature

src/router/Router.ts

@@ -68,9 +68,9 @@ export class Router {
     QWeb.addDirective(makeDirective(<RouterEnv>env));
   }
 
-  navigate(dest: Destination): void {
-    const to = this.destToUrl(dest);
-    history.pushState({}, to, location.origin + to);
+  navigate(to: Destination): void {
+    const url = this.destToUrl(to);
+    history.pushState({}, url, location.origin + url);
     this.checkAndUpdateRoute();
   }
 
@@ -107,6 +107,11 @@ export class Router {
       let route = this.routes[routeId];
       let params = this.matchRoute(route.path, currentPath);
       if (params) {
+        if (route.redirect) {
+          this.navigate(route.redirect);
+          this.checkRoute();
+          return;
+        }
         this.currentRoute = route;
         this.currentParams = params;
         return;

tests/router/router.test.ts

@@ -71,3 +71,27 @@ describe("match routes", () => {
     });
   });
 });
+
+describe("redirect", () => {
+  test("can redirect to other route", () => {
+    router = new TestRouter(env, [
+      { name: "routea", path: "/some/path" },
+      { name: "routeb", path: "/some/other/path", redirect: { name: "routea" } }
+    ]);
+
+    router.navigate({ name: "routeb" });
+    expect(window.location.pathname).toBe("/some/path");
+    expect(router.currentRouteName).toBe("routea");
+  });
+
+  test("can redirect to other path", () => {
+    router = new TestRouter(env, [
+      { name: "routea", path: "/some/path" },
+      { name: "routeb", path: "/some/other/path", redirect: { path: "/some/path" } }
+    ]);
+
+    router.navigate({ name: "routeb" });
+    expect(window.location.pathname).toBe("/some/path");
+    expect(router.currentRouteName).toBe("routea");
+  });
+});