test-utils: setValue() is not work well

Subject of the issue

Describe your issue here.

	it("should bind value to input by v-model", async () => {
		const textInput = wrapper.find('input[type="text"]');
		await textInput.setValue("some value");
		expect(textInput.element.innerHTML).toBe("some value");
	});

Steps to reproduce

1. run the test
2. throw the error message to console shows:
   

Tell us how to reproduce this issue. Please provide a working and simplified example.

Expected behaviour

pass the test What should happen?

Actual behaviour

throw error as you can see What happens instead?

Possible Solution

maybe the API is deprecated but the official doc is not updated, all of above is from doc example What are the alternative solutions? Please describe what else you have considered?