How to use the @microsoft/fast-web-utilities.KeyCodes.escape function in @microsoft/fast-web-utilities

test("should call the `onDismiss` callback when escape key is pressed and `visible` prop is true", () => {
        const onDismiss: any = jest.fn();
        const map: any = {};

        // Mock window.addEventListener
        window.addEventListener = jest.fn((event: string, callback: any) => {
            map[event] = callback;
        });

        const rendered: any = mount(
            <dialog>
        );

        map.keydown({ keyCode: KeyCodes.escape });

        expect(onDismiss).toHaveBeenCalledTimes(0);

        // set visible prop
        rendered.setProps({ visible: true });

        map.keydown({ keyCode: KeyCodes.escape });

        expect(onDismiss).toHaveBeenCalledTimes(1);
    });
</dialog>

window.addEventListener = jest.fn((event: string, callback: any) => {
            map[event] = callback;
        });

        const rendered: any = mount(
            <dialog>
        );

        map.keydown({ keyCode: KeyCodes.escape });

        expect(onDismiss).toHaveBeenCalledTimes(0);

        // set visible prop
        rendered.setProps({ visible: true });

        map.keydown({ keyCode: KeyCodes.escape });

        expect(onDismiss).toHaveBeenCalledTimes(1);
    });
</dialog>