How to mock a cloned imports dependency differently in each test - unit-testing

Question

I have a file that imports another. I want to mock the other import differently in each test yet have it show through the file that imports it.
I have tried various mocking and importing approaches through googling but none have worked.
Consider the files:
settings.js
export default { mySetting: null };
store.js
import settings from "./settings";
export default {
settings: { ...settings },
};
settingsDemo.js
import store from "./store";
it("default settings", () => {
expect(store.settings.mySetting).toBe(null);
});
it("mocked to true", () => {
expect(store.settings.mySetting).toBe(true);
});
it("mocked to false", () => {
expect(store.settings.mySetting).toBe(false);
});
how do I mock these files within settingsDemo.js to have all 3 tests pass without editing settings.js or store.js?
Note:
this is similar to my previous question, but the solution to import the dependency and change the value doesn't work in this case since store doesn't reference the settings object here but instead clones it for an initial value.

Answer 1

The same principle applies: "while you can't change the value of imports, you can change the objects that they are referring to."
In this case store is an object that contains a nested settings object. While it is not possible to simply assign store to something else, it is possible to assign store.settings to something else. It is also possible to set store.settings.mySetting to something else:
import store from "./store";
it("default settings", () => {
expect(store.settings.mySetting).toBe(null); // SUCCESS
});
it("mocked to true", () => {
store.settings = { mySetting: true }; // set store.settings to something else
expect(store.settings.mySetting).toBe(true); // SUCCESS
});
it("mocked to false", () => {
store.settings.mySetting = false; // set store.settings.mySetting to something else
expect(store.settings.mySetting).toBe(false); // SUCCESS
});

Answer 2

I'm not sure if I understand your question. It sounds like you just want to mock a simple object
"{settings:{ mySetting: null }}".
let store = {settings:{ mySetting: null }}
it("default settings", () => {
store.settings.mySetting = null
expect(store.settings.mySetting).toBe(null);
});
it("mocked to true", () => {
store.settings.mySetting = true
expect(store.settings.mySetting).toBe(true);
});
it("mocked to false", () => {
store.settings.mySetting = false
expect(store.settings.mySetting).toBe(false);
});