A babel plugin adding the ability to rewire modul dependency. This enables to mock modules for testing purposes.
@trainerbill Can you provide your sample file in a PR (similar to the existing samples) ?
Regarding the wildcard import. This is intentional. The reason is by allowing to import the rewire to exist on a wildcard import it may break existing code. E.g. it would be possible another module using your module expectes that only certain functions or objects are exported and breaks on the rewiring api. But you can use a named import to get to the API.
Regarding the wildcard import. This is intentional. The reason is by allowing to import the rewire to exist on a wildcard import it may break existing code. E.g. it would be possible another module using your module expectes that only certain functions or objects are exported and breaks on the rewiring api. But you can use a named import to get to the API.
@speedskater is there a better practice for testing function calls from external libraries?
@jasonenglish Maybe. Assume you want to test your module A, which has a dependency to module B, where B is an external module. In this case you only have to transform module A because. By transforming module A you are able to rewire the dependencies to methods of B within A. This allows you to track and spy on the external calls. Does this answer your question?
I am trying to get babel-plugin-rewire@1.0.0-rc-2 to work on a babel 6 karma mocha webpack setup, and I have followed the instructions in the readme, and I am ending up with the following error
Uncaught TypeError: Cannot read property 'Rewire' of undefined
Any advice/assistance would be most appreciated
that is double underscore Rewire double underscore ... gitter interpreted it as markdown oops
Uncaught TypeError: Cannot read property '__Rewire__' of undefined
there
@gavriguy rewireing only instance methods is not possible. But you can rewire the class itself.
@TheSavior a new version rc-3 is out there with your PR.
@/all I will again have a look at some issues on the upcoming monday.
@/all I will again have a look at some issues on the upcoming monday.
//entry.js
import thingToRewire from './thing'
//thing.js
export default thing () {
require('./stuff')
}
@/all published 1.0.0-rc-4
e.g.
MyComponent.jsx has import someCoolFunctionThatShouldBeMocked
I need some help getting Rewire working. I think it may be at least being included as a plugin now, but I can't say for sure. I can tell it's doing something now because when I enable the plugin I see in my test output:
PhantomJS 2.1.1 (Mac OS X 0.0.0) ERROR LOG: 'named exports are not supported in *.vue files.' however, I do not see any __RewireAPI__ being added to exports in my test files :(
How can I spy on a function that is references from an object? Example:
a.js
const map = {
a,
b,
c
};
function run(options) {
map[options.val]();
}
function a() {...}
function b() {...}
function c() {...}a.spec.js
import { a, __RewireAPI__ as ARewireAPI } from './a';
describe('a', () => {
describe('run', () => {
const spy= jasmine.createSpy('spy').and.callFake(() => {
...
});
beforeEach(() => {
ARewireAPI.__Rewire__('b', spy);
});
afterEach(() => {
TooltipRewireAPI.__ResetDependency__('b');
});
it('calls b()', () => {
a.run({val: 'b'}); // doesn't call the spy because what actually being called is the reference from the map object
});
});
});
I get errs like
TypeError: 'undefined' is not a function (evaluating '_get__('AGGrid').__ResetDependency__('AgGridReact')')
at :322
is there another requirements other than installing babel-plugin-rewire through npm ?
I feel like I’m doing something wrong — When I put babel-plugin-rewire into place, all of my imports into my tested files start failing. I saw the ignoredIdentifiers config option — Am I supposed to ignore everything that is imported into all of my tested files? Some of my imports look like:
import {Map} from ‘immutable’
import {flatMap} from ‘lodash’
etc...
import {Map} from ‘immutable’
import {flatMap} from ‘lodash’
etc...
anyone there*
?
Hello, Everyone, I want to ask is there a way to get the mocked function details like returned values and args in babel-plugin-rewire?
Please see this link:
https://stackoverflow.com/questions/55911777/babel-plugin-rewire-get-mock-call-count
Please see this link:
https://stackoverflow.com/questions/55911777/babel-plugin-rewire-get-mock-call-count