非导出函数的 Mocha 单元测试 returns 'xx is not a function'
Mocha unit test on a non exported function returns 'xx is not a function'
我正在尝试 运行 使用 mocha 对非导出函数进行单元测试,但出现错误 'xx is not a function'。示例结构就像 ff 代码,其中我想测试函数 isParamValid。 settings.js中的代码格式已经存在于我们的系统中,所以我无法重构它。
// settings.js
const settings = (() => {
const isParamValid = (a, b) => {
// process here
}
const getSettings = (paramA, paramB) => {
isParamValid(paramA, paramB);
}
return {
getSettings,
}
})();
module.exports = settings;
我尝试了 ff 代码来测试它,但是 mocha 给出了错误 ReferenceError: isParamValid is not defined
// settings.test.js
const settings= rewire('./settings.js');
describe('isParamValid', () => {
it('should validate param', () => {
let demo = settings.__get__('isParamValid');
expect(demo(0, 1)).to.equal(true);
expect(demo(1, 0)).to.equal(true);
expect(demo(1, 1)).to.equal(false);
})
})
您无法在此处直接访问 isParamValid
。尝试通过如下集成对其进行测试
const settings = require('./settings.js'); // No need of rewire
describe('isParamValid', () => {
it('should validate param', () => {
const demo = settings.getSettings; // Read it from getSettings
expect(demo(0, 1)).to.equal(true);
expect(demo(1, 0)).to.equal(true);
expect(demo(1, 1)).to.equal(false);
})
})
我正在尝试 运行 使用 mocha 对非导出函数进行单元测试,但出现错误 'xx is not a function'。示例结构就像 ff 代码,其中我想测试函数 isParamValid。 settings.js中的代码格式已经存在于我们的系统中,所以我无法重构它。
// settings.js
const settings = (() => {
const isParamValid = (a, b) => {
// process here
}
const getSettings = (paramA, paramB) => {
isParamValid(paramA, paramB);
}
return {
getSettings,
}
})();
module.exports = settings;
我尝试了 ff 代码来测试它,但是 mocha 给出了错误 ReferenceError: isParamValid is not defined
// settings.test.js
const settings= rewire('./settings.js');
describe('isParamValid', () => {
it('should validate param', () => {
let demo = settings.__get__('isParamValid');
expect(demo(0, 1)).to.equal(true);
expect(demo(1, 0)).to.equal(true);
expect(demo(1, 1)).to.equal(false);
})
})
您无法在此处直接访问 isParamValid
。尝试通过如下集成对其进行测试
const settings = require('./settings.js'); // No need of rewire
describe('isParamValid', () => {
it('should validate param', () => {
const demo = settings.getSettings; // Read it from getSettings
expect(demo(0, 1)).to.equal(true);
expect(demo(1, 0)).to.equal(true);
expect(demo(1, 1)).to.equal(false);
})
})