test: add test case for watchEffect

mohcanohca · Jul 26, 2022 · bc4f11c · bc4f11c
1 parent 09eadc3
commit bc4f11c
Showing 1 changed file with 15 additions and 0 deletions.
diff --git a/packages/runtime-core/__tests__/apiWatch.spec.ts b/packages/runtime-core/__tests__/apiWatch.spec.ts
@@ -0,0 +1,15 @@
+describe("api: watch", () => {
+  it.todo("effect", async () => {
+    // 先实现个 watchEffect 玩一玩
+    const state = reactive({ count: 0 });
+    let dummy;
+    watchEffect(() => {
+      dummy = state.count;
+    });
+    expect(dummy).toBe(0);
+
+    state.count++;
+    await nextTick();
+    expect(dummy).toBe(1);
+  });
+});