@plugnet/util/assert.spec.js

A collection of useful utilities for @plugnet

"use strict";

var _ = require(".");

// Copyright 2017-2019 @polkadot/util authors & contributors
// This software may be modified and distributed under the terms
// of the Apache-2.0 license. See the LICENSE file for details.
describe('assert', () => {
  it('should not throw an error when test is true', () => {
    expect((0, _.assert)(true, 'nothing should be thrown')).toEqual(true);
  });
  it('should throw an error when test is not true', () => {
    expect(() => (0, _.assert)(false, 'error thrown')).toThrow(/error thrown/);
  });
  it('should throw an error when message: () => string', () => {
    expect(() => (0, _.assert)(false, () => 'message from function')).toThrow(/message from function/);
  });
  it('throws a valid constructed ExtError', () => {
    try {
      (0, _.assert)(false, 'error', -666, 'data');
    } catch (error) {
      expect(error.code).toEqual(-666);
      expect(error.data).toEqual('data');
      expect(error.message).toEqual('error');
    }
  });
});