angular - ReferenceError：在http：// localhost：9877src / test.ts中找不到变量：URLSearchParams

Question

This is my function in ts file.

getFeatures () {
    const queryString = new URLSearchParams();
    ...
}

This is my jasmine file.

 it('should get features', inject([FeatureSupportService], (service : FeatureSupportService) => {
    expect(service.getFeatures()).toBeTruthy();
  }));

Error: I am not getting this error in karma but I am getting this error when I try to code coverage with yarn test

Can't find variable: URLSearchParams in http://localhost:9877src/test.ts

Answer 1

Had the same problem with Ionic 2 framework recently. For me it was that PhantomJS needed a polyfill for URLSearchParams .

So try including it as a npm package (or manually from https://github.com/WebReflection/url-search-params ):

npm install url-search-params

And include it to whatever test runner or environment you are using eg karma config file:

files: [
            '../node_modules/url-search-params/build/url-search-params.js',
            { pattern: './karma-test-shim.js', watched: true }
        ],