@mic-rexjs/usecases-react/es/hooks/useContext/index.test.js

React-based solution for use usecases of Clean Architecture

import { describe, expect, test } from '@jest/globals';
import { renderHook } from '@testing-library/react';
import { useContext } from '.';
import { ArgumentTypes } from '../../enums/ArgumentTypes';
import { useContext as useReactContext } from 'react';
const testUseCase = () => {
    return {};
};
describe('useContext', () => {
    test('should return the default context with value `null` if map has not saved a usecase with default args', () => {
        const { result } = renderHook(() => {
            const context = useContext(testUseCase);
            const value = useReactContext(context);
            return value;
        });
        const { current } = result;
        expect(current).toBe(null);
    });
    test('should return the default context with value `null` if map has not saved a usecase with `ArgumentTypes.None` & `UseCaseModes.Normal`', () => {
        const { result } = renderHook(() => {
            const context = useContext(testUseCase, ArgumentTypes.None);
            const value = useReactContext(context);
            return value;
        });
        const { current } = result;
        expect(current).toBe(null);
    });
    test('should return the default context with value `null` as unmount this hook', () => {
        const { result: result1, unmount: unmount1 } = renderHook(() => {
            const context = useContext(testUseCase, ArgumentTypes.None);
            const value = useReactContext(context);
            return value;
        });
        const { current: current1 } = result1;
        expect(typeof current1).toBe('object');
        unmount1();
        const { result: result2 } = renderHook(() => {
            const context = useContext(testUseCase, ArgumentTypes.None);
            const value = useReactContext(context);
            return value;
        });
        const { current: current2 } = result2;
        expect(current2).toBe(null);
    });
    test('should return a new context if map has not saved a usecase with `ArgumentTypes.Entity` & `UseCaseModes.Normal`', () => {
        const { result } = renderHook(() => {
            return useContext(testUseCase, ArgumentTypes.Entity);
        });
        const { current } = result;
        expect(typeof current).toBe('object');
    });
});