升级到babel 7.1.5后,当我使用import * as时,我的测试失败。
test.spec.js
import * as Helper from "../../../../src/renderer/modules/Helper";
describe('Testing', () => {
it('Should import correctly', () => {
console.log(Helper.test()) // a
spyOn(Helper, 'test').and.returnValue('b');
});
});
Helper.js
function test() {
return 'a'
}
export {test}
错误
'Upgrade.spec.js (7:8)', 'a'
Error: <spyOn> : test is not declared writable or has no setter
Usage: spyOn(<object>, <methodName>)
at <Jasmine>
at UserContext.it (webpack:///./test/unit/specs/renderer/Upgrade.spec.js?:7:5)
at <Jasmine>
最佳答案
来源:Can webpack 4 modules be configured as to allow Jasmine to spy on their members?
有一个spyOnProperty,通过将accessType参数设置为'get'可以将属性视为只读。
您的设置将如下所示
import * as mod from 'my/module';
//...
const funcSpy = jasmine.createSpy('myFunc').and.returnValue('myMockReturnValue');
spyOnProperty(mod, 'myFunc', 'get').and.returnValue(funcSpy);
关于webpack - 导入*为( Jasmine spyOn)不可写,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/53296840/