import { describe, expect, it } from "vitest"; import {  areShortcutModifierStatesEqual,  clearShortcutModifierState,  readShortcutModifierState,  setShortcutModifierState,  syncShortcutModifierStateFromKeyboardEvent,} from "./shortcutModifierState"; function keyboardEventLike(type: "keydown" | "keyup", init: Partial<KeyboardEvent>): KeyboardEvent {  return {    type,    key: "",    metaKey: false,    ctrlKey: false,    altKey: false,    shiftKey: false,    ...init,  } as KeyboardEvent;} describe("shortcutModifierState", () => {  it("compares modifier states by value", () => {    expect(      areShortcutModifierStatesEqual(        { metaKey: false, ctrlKey: true, altKey: false, shiftKey: true },        { metaKey: false, ctrlKey: true, altKey: false, shiftKey: true },      ),    ).toBe(true);    expect(      areShortcutModifierStatesEqual(        { metaKey: false, ctrlKey: true, altKey: false, shiftKey: true },        { metaKey: false, ctrlKey: false, altKey: false, shiftKey: true },      ),    ).toBe(false);  });   it("preserves the current store object when modifier values do not change", () => {    clearShortcutModifierState();     const initialState = readShortcutModifierState();    setShortcutModifierState({      metaKey: false,      ctrlKey: false,      altKey: false,      shiftKey: false,    });     expect(readShortcutModifierState()).toBe(initialState);     setShortcutModifierState({      metaKey: false,      ctrlKey: true,      altKey: false,      shiftKey: false,    });    const updatedState = readShortcutModifierState();    expect(updatedState).not.toBe(initialState);    expect(updatedState).toEqual({      metaKey: false,      ctrlKey: true,      altKey: false,      shiftKey: false,    });     setShortcutModifierState({      metaKey: false,      ctrlKey: true,      altKey: false,      shiftKey: false,    });    expect(readShortcutModifierState()).toBe(updatedState);     clearShortcutModifierState();    const clearedState = readShortcutModifierState();    expect(clearedState).toEqual({      metaKey: false,      ctrlKey: false,      altKey: false,      shiftKey: false,    });    expect(clearedState).not.toBe(updatedState);     clearShortcutModifierState();    expect(readShortcutModifierState()).toBe(clearedState);  });   it("tracks bare modifier keydown and keyup events explicitly", () => {    clearShortcutModifierState();     syncShortcutModifierStateFromKeyboardEvent(      keyboardEventLike("keydown", {        key: "Meta",        metaKey: false,      }),    );    expect(readShortcutModifierState()).toEqual({      metaKey: true,      ctrlKey: false,      altKey: false,      shiftKey: false,    });     syncShortcutModifierStateFromKeyboardEvent(      keyboardEventLike("keydown", {        key: "Shift",        metaKey: true,        shiftKey: false,      }),    );    expect(readShortcutModifierState()).toEqual({      metaKey: true,      ctrlKey: false,      altKey: false,      shiftKey: true,    });     syncShortcutModifierStateFromKeyboardEvent(      keyboardEventLike("keyup", {        key: "Meta",        metaKey: true,        shiftKey: true,      }),    );    expect(readShortcutModifierState()).toEqual({      metaKey: false,      ctrlKey: false,      altKey: false,      shiftKey: true,    });     syncShortcutModifierStateFromKeyboardEvent(      keyboardEventLike("keyup", {        key: "Shift",        shiftKey: true,      }),    );    expect(readShortcutModifierState()).toEqual({      metaKey: false,      ctrlKey: false,      altKey: false,      shiftKey: false,    });  });});