apollo-在Jasmine/Karma测试中使用mockError时出现angular抛出错误

npm install apollo-client graphql graphql-tag --save-dev

import { ApolloClient, ApolloLink, HttpLink, InMemoryCache } from 'apollo-client';
import { onError } from 'apollo-link-error';
import { ApolloProvider } from 'react-apollo';
import { mockNetworkInterfaceWithSchema } from 'apollo-test-utils';
import { makeExecutableSchema } from 'graphql-tools';

const schema = makeExecutableSchema({ typeDefs });

const networkInterface = mockNetworkInterfaceWithSchema({ schema });

networkInterface.use([{
  applyMiddleware(req, next) {
    if (req.query.includes('mockError')) {
      next(new Error('Mock error message'));
    } else {
      next();
    }
  },
}]);

const client = new ApolloClient({
  link: ApolloLink.from([
    onError(({ graphQLErrors, networkError }) => {
      if (graphQLErrors) {
        graphQLErrors.forEach(({ message, locations, path }) => {
          console.log(`[GraphQL error]: Message: ${message}, Location: ${locations}, Path: ${path}`);
        });
      }
      if (networkError) {
        console.log(`[Network error]: ${networkError}`);
      }
    }),
    new HttpLink({ uri: 'http://your-graphql-endpoint' }),
  ]),
  cache: new InMemoryCache(),
});

it('should handle error', async () => {
  const query = gql`
    query {
      someQuery {
        id
      }
    }
  `;

  const { result, error } = await client.query({ query });

  expect(error).toBeDefined();
  expect(error.message).toBe('Mock error message');
});