我在启动hapi服务器之前添加了一些配置值。应用程序工作正常,尽管在测试中我不能使用config.get()。我可以解决proxyquire。所以我想知道
是否有其他替代方法?
//initialize.js
const config = require('config');
async function startServe() {
const someConfigVal = await callAPIToGetSomeJSONObject();
config.dynamicValue = someConfigVal;
server.start();
}
//doSomething.js
const config = require('config');
function doesWork() {
const valFromConfig = config.dynamicValue.X;
// In test I can use proxiquire by creating config object
...
}
function doesNotWork() {
const valFromConfig = config.get('dynamicValue.X');
// Does not work with sinon mocking as this value does not exist in config when test run.
// sinon.stub(config, 'get').withArgs('dynamicValue.X').returns(someVal);
.....
}
上下文:测试。
const config = require('config');
const sinon = require('sinon');
const { expect } = require('chai');
// Example: simple function under test.
function other() {
const valFromConfig = config.get('dynamicValue.X');
return valFromConfig;
}
describe('Config', function () {
it ('without stub or mock.', function () {
// Config dynamicValue.X is not exist.
// Expect to throw error.
try {
other();
expect.fail('expect never get here');
} catch (error) {
expect(error.message).to.equal('Configuration property "dynamicValue.X" is not defined');
}
});
it('get using stub.', function () {
// Create stub.
const stubConfigGet = sinon.stub(config, 'get');
stubConfigGet.withArgs('dynamicValue.X').returns(false);
// Call get.
const test = other();
// Validate te result.
expect(test).to.equal(false);
expect(stubConfigGet.calledOnce).to.equal(true);
// Restore stub.
stubConfigGet.restore();
});
it('get using mock.', function () {
// Create mock.
const mockConfig = sinon.mock(config);
mockConfig.expects('get').once().withArgs('dynamicValue.X').returns(false);
// Call get.
const test = other();
// Validate te result.
expect(test).to.equal(false);
// Restore mock.
expect(mockConfig.verify()).to.equal(true);
});
});
希望这会有所帮助。