rcrx/src/hooks/observable.test.ts

Rcrx is a lightweight library that provides Rx.js utilities for React applications.

import { describe, it, expect } from "vitest";
import { useObservable } from "./observable";
import { Observable } from "rxjs";
import { renderHook, act } from "@testing-library/react-hooks";

describe("useObservable", () => {
  it("should update value when observable emits", () => {
    let observer: any;
    const observable = new Observable<number>((obs) => {
      observer = obs;
    });
    const { result } = renderHook(() => useObservable(observable));
    act(() => {
      observer.next(42);
    });
    expect(result.current).toBe(42);
  });
});