这是单元测试解决方案:
index.js
:
const AWS = require('aws-sdk');
const ssm = new AWS.SSM();
function getParamsFromParamterStore(query) {
return ssm.getParametersByPath(query).promise();
}
index.test.js
:
const rewire = require('rewire');
const sinon = require('sinon');
const { expect } = require('chai');
const mod = rewire('./');
describe('60447015', () => {
it('should pass', async () => {
const ssmMock = { getParametersByPath: sinon.stub().returnsThis(), promise: sinon.stub().resolves('mock data') };
const awsMock = {
SSM: ssmMock,
};
mod.__set__('ssm', awsMock.SSM);
const actual = await mod.__get__('getParamsFromParamterStore')('query');
expect(actual).to.be.eq('mock data');
sinon.assert.calledWithExactly(ssmMock.getParametersByPath, 'query');
sinon.assert.calledOnce(ssmMock.promise);
});
});
覆盖率 100% 的单元测试结果:
60447015
✓ should pass
1 passing (30ms)
----------|---------|----------|---------|---------|-------------------
File | % Stmts | % Branch | % Funcs | % Lines | Uncovered Line #s
----------|---------|----------|---------|---------|-------------------
All files | 100 | 100 | 100 | 100 |
index.js | 100 | 100 | 100 | 100 |
----------|---------|----------|---------|---------|-------------------