test: trigger camelCase handler

packages/runtime-core/__tests__/componentEmits.spec.ts

@@ -4,7 +4,7 @@ describe("component: emits", () => {
   test("trigger handlers", () => {
     const Foo = {
       render() {
-	return h("foo")
+        return h("foo");
       },
       setup(props, { emit }) {
         // the `emit` function is bound on component instances
@@ -26,4 +26,25 @@ describe("component: emits", () => {
     // only capitalized or special chars are considered event listeners
     expect(onBar).toHaveBeenCalled();
   });
+
+  test("trigger camelCase handler", () => {
+    const Foo = {
+      render() {
+        return h("foo");
+      },
+      setup(props, { emit }) {
+        emit("test-event");
+      },
+    };
+
+    const fooSpy = jest.fn();
+    const Comp = {
+      render() {
+        return h(Foo, { onTestEvent: fooSpy });
+      },
+    };
+    render(h(Comp), nodeOps.createElement("div"));
+
+    expect(fooSpy).toHaveBeenCalledTimes(1);
+  });
 });