Function testComponent

packages/mobx-react/__tests__/disposeOnUnmount.test.tsx:13–31

(C: ClassC, afterMount?: Function, afterUnmount?: Function)

}

function testComponent(C: ClassC, afterMount?: Function, afterUnmount?: Function) {
    const ref = React.createRef<ClassC>()
    const { unmount } = render(<C ref={ref} />)

    let cref = ref.current
    expect(cref?.methodA).not.toHaveBeenCalled()
    expect(cref?.methodB).not.toHaveBeenCalled()
    if (afterMount) {
        afterMount(cref)
    }

    unmount()

    expect(cref?.methodA).toHaveBeenCalledTimes(1)
    expect(cref?.methodB).toHaveBeenCalledTimes(1)
    if (afterUnmount) {
        afterUnmount(cref)
    }
}

describe("without observer", () => {
    test("class without componentWillUnmount", async () => {