import { Evaluator, Expression, Scope } from '../dist/index.js';

const e = new Evaluator();
const s = new Scope({}, false);
const st = new Scope({}, true);

describe('Evaluator.template should work correctly', () => {
    it('should eval null', () => {
        const result = e.template(null, s);
        expect(result).toBe('');
    });
    it('should eval undefined', () => {
        const result = e.template(undefined, s);
        expect(result).toBe('');
    });
    it('should eval empty', () => {
        const result = e.template('');
        expect(result).toBe('');
    });
    it('should eval const', () => {
        const result = e.template('12', s);
        expect(result).toBe('12');
    });

    it('should eval exp', () => {
        const result = e.template('$(1 + 1)', s);
        expect(result).toBe('2');
    });
    it('should eval error', () => {
        const result = e.template('$(exp+++)', s);
        expect(result).toBe('');
    });
    it('should eval error with throws', () => {
        expect(() => e.template('$(exp+++)', st)).toThrow(/Failed to compile/);
    });
    it('should eval error with no scope', () => {
        expect(() => e.template('$(exp+++)', null)).toThrow(/Failed to compile/);
    });
    it('should eval bad type', () => {
        // @ts-expect-error 测试错误输入
        expect(() => e.template(new Date(0), s)).toThrow(TypeError);
    });
    it('should eval bad return', () => {
        expect(e.template('${return 0;}', s)).toBe('');
    });
    it('should eval bad return with throws', () => {
        expect(() => e.template('${return 0;}', st)).toThrow(TypeError);
    });
});