Question

我正在尝试测试以下组件，但由于查询的onCompleted道具出现错误，因此一旦获取数据就无法使其在Jest中呈现。我有另一个基本相同的组件，但是根本没有使用onCompleted，不会给Jest带来麻烦。

这里是有问题的组件，为简洁起见，减少了一些代码：

import { trackProductListView } from "src/shared/components/analytics";
import searchResourcesQuery from "./search-resources.graphql";
const SearchResources = ({ filter, orderBy, query }) => {
  const { loading, error, data, fetchMore } = useQuery(searchResourcesQuery, {
    variables: {
      orderBy,
      filter,
      query
    },
    onCompleted: ({ searchResources: { results } }) =>
      results && trackProductListView("Search", null, results, 1)
  });
...

  return (
    <div>
      {!results.length ? (
        <EmptySearch variant="resources" />
      ) : (
        <InfiniteResources
          trackContext="Search"
          hasMore={!!searchAfter}
          loadMoreEntries={loadMoreEntries}
          resources={results}
        />
      )}
    </div>
  );
};

这是测试，尽管我已删除了模拟结果（为简洁起见，再次）：

import React from "react";
import { act, wait } from "@testing-library/react";
import "@testing-library/jest-dom/extend-expect";
import { MockedProvider } from "@apollo/react-testing";
import renderWithRouter from "src/shared/test-utils/renderWithRouter.js";
import SearchResources from "./search-resources";
import searchResourcesQuery from "./search-resources.graphql";
const mocks = [
  {
    request: {
      query: searchResourcesQuery,
      variables: { query: "test" }
    },
    result: {
      data: {
        searchResources: {
          searchAfter: null,
          results: [],
          __typename: "ResourceList"
        }
      }
    }
  }
];
it("renders", async () => {
  const { getByText } = renderWithRouter(
    <MockedProvider addTypename={false} mocks={mocks}>
      <SearchResources query="test" />
    </MockedProvider>
  );
  await act(() => wait(() => getByText("Resource Partner Link test")));
  expect(getByText("Resource Partner Link test")).toBeInTheDocument();
});

运行这些测试会导致：

TypeError: (0 , _analytics.trackProductListView) is not a function

任何解决此问题的帮助都将受到赞赏！

Answer 1

好吧，事实证明我可以模拟trackProductListView函数

尝试使用useQuery挂钩测试组件，但onCompleted导致问题

1 个答案: