@esmx/router-vue/dist/router-view.test.mjs

Vue integration for @esmx/router - A universal router that works seamlessly with both Vue 2.7+ and Vue 3

import { Router, RouterMode } from "@esmx/router";
import { afterEach, beforeEach, describe, expect, it } from "vitest";
import { createApp, defineComponent, h, inject, nextTick, provide } from "vue";
import { RouterView } from "./router-view.mjs";
import { useProvideRouter } from "./use.mjs";
const HomeComponent = defineComponent({
  name: "HomeComponent",
  setup() {
    return () => h("div", { class: "home" }, "Home Page");
  }
});
const AboutComponent = defineComponent({
  name: "AboutComponent",
  setup() {
    return () => h("div", { class: "about" }, "About Page");
  }
});
const UserComponent = defineComponent({
  name: "UserComponent",
  setup() {
    return () => h("div", { class: "user" }, "User Component");
  }
});
const ESModuleComponent = {
  __esModule: true,
  default: defineComponent({
    name: "ESModuleComponent",
    setup() {
      return () => h("div", { class: "es-module" }, "ES Module Component");
    }
  })
};
describe("router-view.ts - RouterView Component", () => {
  let router;
  let testContainer;
  beforeEach(async () => {
    testContainer = document.createElement("div");
    testContainer.id = "test-app";
    document.body.appendChild(testContainer);
    const routes = [
      {
        path: "/",
        component: HomeComponent,
        meta: { title: "Home" }
      },
      {
        path: "/about",
        component: AboutComponent,
        meta: { title: "About" }
      },
      {
        path: "/users/:id",
        component: UserComponent,
        meta: { title: "User" }
      },
      {
        path: "/es-module",
        component: ESModuleComponent,
        meta: { title: "ES Module" }
      }
    ];
    router = new Router({
      root: "#test-app",
      routes,
      mode: RouterMode.memory,
      base: new URL("http://localhost:8000/")
    });
    await router.replace("/");
    await new Promise((resolve) => setTimeout(resolve, 10));
  });
  afterEach(() => {
    if (testContainer.parentNode) {
      testContainer.parentNode.removeChild(testContainer);
    }
    if (router) {
      router.destroy();
    }
  });
  describe("Basic Functionality", () => {
    it("should render matched route component at depth 0", async () => {
      const TestApp = defineComponent({
        setup() {
          useProvideRouter(router);
          return () => h("div", [h(RouterView)]);
        }
      });
      const app = createApp(TestApp);
      app.mount(testContainer);
      await nextTick();
      expect(testContainer.textContent).toContain("Home Page");
      app.unmount();
    });
    it("should render different components when route changes", async () => {
      const TestApp = defineComponent({
        setup() {
          useProvideRouter(router);
          return () => h("div", [h(RouterView)]);
        }
      });
      const app = createApp(TestApp);
      app.mount(testContainer);
      await nextTick();
      expect(testContainer.textContent).toContain("Home Page");
      await router.push("/about");
      await nextTick();
      expect(testContainer.textContent).toContain("About Page");
      app.unmount();
    });
    it("should handle routes with parameters", async () => {
      const TestApp = defineComponent({
        setup() {
          useProvideRouter(router);
          return () => h("div", [h(RouterView)]);
        }
      });
      const app = createApp(TestApp);
      app.mount(testContainer);
      await router.push("/users/123");
      await nextTick();
      expect(testContainer.textContent).toContain("User Component");
      app.unmount();
    });
  });
  describe("Component Resolution", () => {
    it("should resolve ES module components correctly", async () => {
      const TestApp = defineComponent({
        setup() {
          useProvideRouter(router);
          return () => h("div", [h(RouterView)]);
        }
      });
      const app = createApp(TestApp);
      app.mount(testContainer);
      await router.push("/es-module");
      await nextTick();
      expect(testContainer.textContent).toContain("ES Module Component");
      app.unmount();
    });
    it("should handle function components", async () => {
      const FunctionComponent = () => h("div", "Function Component");
      const routes = [
        {
          path: "/function",
          component: FunctionComponent,
          meta: { title: "Function" }
        }
      ];
      const functionRouter = new Router({
        root: "#test-app",
        routes,
        mode: RouterMode.memory,
        base: new URL("http://localhost:8000/")
      });
      await functionRouter.replace("/function");
      await new Promise((resolve) => setTimeout(resolve, 10));
      const TestApp = defineComponent({
        setup() {
          useProvideRouter(functionRouter);
          return () => h("div", [h(RouterView)]);
        }
      });
      const app = createApp(TestApp);
      app.mount(testContainer);
      await nextTick();
      expect(testContainer.textContent).toContain("Function Component");
      app.unmount();
      functionRouter.destroy();
    });
  });
  describe("Depth Tracking", () => {
    it("should inject depth 0 by default", async () => {
      let injectedDepth;
      const RouterViewDepth = Symbol("RouterViewDepth");
      const TestRouterView = defineComponent({
        name: "TestRouterView",
        setup() {
          injectedDepth = inject(RouterViewDepth, -1);
          return () => h(RouterView);
        }
      });
      const TestApp = defineComponent({
        setup() {
          useProvideRouter(router);
          return () => h("div", [h(TestRouterView)]);
        }
      });
      const app = createApp(TestApp);
      app.mount(testContainer);
      await nextTick();
      expect(injectedDepth).toBe(-1);
      app.unmount();
    });
    it("should provide correct depth in nested RouterViews", async () => {
      let parentDepth;
      let childDepth;
      const RouterViewDepth = Symbol("RouterViewDepth");
      const ParentTestComponent = defineComponent({
        name: "ParentTestComponent",
        setup() {
          parentDepth = inject(RouterViewDepth, -1);
          provide(RouterViewDepth, 0);
          return () => h("div", [h("span", "Parent"), h(ChildTestComponent)]);
        }
      });
      const ChildTestComponent = defineComponent({
        name: "ChildTestComponent",
        setup() {
          childDepth = inject(RouterViewDepth, -1);
          return () => h("div", "Child");
        }
      });
      const TestApp = defineComponent({
        setup() {
          useProvideRouter(router);
          return () => h("div", [h(ParentTestComponent)]);
        }
      });
      const app = createApp(TestApp);
      app.mount(testContainer);
      await nextTick();
      expect(parentDepth).toBe(-1);
      expect(childDepth).toBe(0);
      app.unmount();
    });
    it("should handle nested RouterViews with correct depth", async () => {
      const Level1Component = defineComponent({
        name: "Level1Component",
        setup() {
          return () => h("div", [h("span", "Level 1"), h(RouterView)]);
        }
      });
      const Level2Component = defineComponent({
        name: "Level2Component",
        setup() {
          return () => h("div", "Level 2");
        }
      });
      const nestedRoutes = [
        {
          path: "/level1",
          component: Level1Component,
          children: [
            {
              path: "level2",
              component: Level2Component
            }
          ]
        }
      ];
      const nestedRouter = new Router({
        root: "#test-app",
        routes: nestedRoutes,
        mode: RouterMode.memory,
        base: new URL("http://localhost:8000/")
      });
      await nestedRouter.replace("/level1/level2");
      await new Promise((resolve) => setTimeout(resolve, 10));
      const TestApp = defineComponent({
        setup() {
          useProvideRouter(nestedRouter);
          return () => h("div", [h(RouterView)]);
        }
      });
      const app = createApp(TestApp);
      app.mount(testContainer);
      await nextTick();
      expect(testContainer.textContent).toContain("Level 1");
      expect(testContainer.textContent).toContain("Level 2");
      app.unmount();
      nestedRouter.destroy();
    });
  });
  describe("Edge Cases and Error Handling", () => {
    it("should render null when no route matches at current depth", async () => {
      const RouterViewDepth = Symbol("RouterViewDepth");
      const DeepRouterView = defineComponent({
        name: "DeepRouterView",
        setup() {
          const currentDepth = inject(RouterViewDepth, 0);
          provide(RouterViewDepth, currentDepth + 1);
          return () => h(RouterView);
        }
      });
      const TestApp = defineComponent({
        setup() {
          useProvideRouter(router);
          return () => h("div", [
            h("span", "App"),
            h(RouterView),
            // This renders Home component at depth 0
            h(DeepRouterView)
            // This tries to render at depth 1, but no match
          ]);
        }
      });
      const app = createApp(TestApp);
      app.mount(testContainer);
      await nextTick();
      expect(testContainer.textContent).toContain("App");
      expect(testContainer.textContent).toContain("Home Page");
      app.unmount();
    });
    it("should handle null components gracefully", async () => {
      var _a, _b, _c;
      const routesWithNull = [
        {
          path: "/null-component",
          component: null,
          meta: { title: "Null Component" }
        }
      ];
      const nullRouter = new Router({
        root: "#test-app",
        routes: routesWithNull,
        mode: RouterMode.memory,
        base: new URL("http://localhost:8000/")
      });
      await nullRouter.replace("/null-component");
      await new Promise((resolve) => setTimeout(resolve, 10));
      const TestApp = defineComponent({
        setup() {
          useProvideRouter(nullRouter);
          return () => h("div", [h("span", "App"), h(RouterView)]);
        }
      });
      const app = createApp(TestApp);
      app.mount(testContainer);
      await nextTick();
      expect((_a = testContainer.textContent) == null ? void 0 : _a.trim()).toBe("App");
      expect((_b = testContainer.querySelector("div")) == null ? void 0 : _b.children.length).toBe(1);
      expect((_c = testContainer.querySelector("span")) == null ? void 0 : _c.textContent).toBe(
        "App"
      );
      app.unmount();
      nullRouter.destroy();
    });
    it("should handle non-existent routes", async () => {
      var _a, _b, _c;
      const nonExistentRouter = new Router({
        root: "#test-app",
        routes: [
          {
            path: "/",
            component: null
            // Initial route with null component
          }
        ],
        mode: RouterMode.memory,
        base: new URL("http://localhost:8000/")
      });
      await nonExistentRouter.replace("/");
      await new Promise((resolve) => setTimeout(resolve, 10));
      const TestApp = defineComponent({
        setup() {
          useProvideRouter(nonExistentRouter);
          return () => h("div", [h("span", "App"), h(RouterView)]);
        }
      });
      const app = createApp(TestApp);
      app.mount(testContainer);
      await nonExistentRouter.push("/non-existent");
      await nextTick();
      await new Promise((resolve) => setTimeout(resolve, 10));
      expect((_a = testContainer.textContent) == null ? void 0 : _a.trim()).toBe("App");
      expect((_b = testContainer.querySelector("div")) == null ? void 0 : _b.children.length).toBe(1);
      expect((_c = testContainer.querySelector("span")) == null ? void 0 : _c.textContent).toBe(
        "App"
      );
      app.unmount();
      nonExistentRouter.destroy();
    });
    it("should handle malformed ES modules", async () => {
      const MalformedModule = {
        __esModule: true,
        default: null
      };
      const malformedRoutes = [
        {
          path: "/malformed",
          component: MalformedModule,
          meta: { title: "Malformed" }
        }
      ];
      const malformedRouter = new Router({
        root: "#test-app",
        routes: malformedRoutes,
        mode: RouterMode.memory,
        base: new URL("http://localhost:8000/")
      });
      await malformedRouter.replace("/malformed");
      await new Promise((resolve) => setTimeout(resolve, 10));
      const TestApp = defineComponent({
        setup() {
          useProvideRouter(malformedRouter);
          return () => h("div", [h("span", "App"), h(RouterView)]);
        }
      });
      const app = createApp(TestApp);
      app.mount(testContainer);
      await nextTick();
      expect(testContainer.textContent).toBe("App");
      app.unmount();
      malformedRouter.destroy();
    });
  });
  describe("Component Properties", () => {
    it("should have correct component name", () => {
      expect(RouterView.name).toBe("RouterView");
    });
    it("should be a valid Vue component", () => {
      expect(RouterView).toHaveProperty("setup");
      expect(typeof RouterView.setup).toBe("function");
    });
    it("should not define props", () => {
      expect(RouterView.props).toBeUndefined();
    });
  });
  describe("Integration Tests", () => {
    it("should re-render when route changes", async () => {
      const TestApp = defineComponent({
        setup() {
          useProvideRouter(router);
          return () => h("div", [h(RouterView)]);
        }
      });
      const app = createApp(TestApp);
      app.mount(testContainer);
      await nextTick();
      expect(testContainer.textContent).toContain("Home Page");
      await router.push("/about");
      await nextTick();
      expect(testContainer.textContent).toContain("About Page");
      await router.push("/users/123");
      await nextTick();
      expect(testContainer.textContent).toContain("User Component");
      app.unmount();
    });
    it("should work with router navigation methods", async () => {
      const TestApp = defineComponent({
        setup() {
          useProvideRouter(router);
          return () => h("div", [h(RouterView)]);
        }
      });
      const app = createApp(TestApp);
      app.mount(testContainer);
      await router.push("/about");
      await nextTick();
      expect(testContainer.textContent).toContain("About Page");
      await router.replace("/users/456");
      await nextTick();
      expect(testContainer.textContent).toContain("User Component");
      await router.back();
      await nextTick();
      expect(testContainer.textContent).toContain("Home Page");
      app.unmount();
    });
  });
});