describe('leftpadesque/debug', () => {
    const originalEnv = process.env;

    beforeEach(() => {
        process.env = { ...originalEnv };
    });

    afterAll(() => {
        process.env = originalEnv;
    });

    const load = async () => {
        jest.resetModules();
        return await import('../lib/leftpadesque/debug');
    };

    test('prod env disables debug by default', async () => {
        process.env.ENVIRONMENT = 'prod';
        delete process.env.DEBUG;

        const dbg = await load();
        expect(dbg.isProd()).toBe(true);
        expect(dbg.isDebug()).toBe(false);
    });

    test('DEBUG=y enables debug even in prod', async () => {
        process.env.ENVIRONMENT = 'production';
        process.env.DEBUG = 'y';

        const dbg = await load();
        expect(dbg.isProd()).toBe(true);
        expect(dbg.isDebug()).toBe(true);
    });

    test('dev env always enables debug', async () => {
        delete process.env.ENVIRONMENT;
        delete process.env.DEBUG;

        const dbg = await load();
        expect(dbg.isProd()).toBe(false);
        expect(dbg.isDebug()).toBe(true);
    });
});