Apollo mock loading Checkout the library apollo-mock-http on NPM, and it's Downloads trend! Feb 27, 2021 · Do I need to install the apollo-server package to use the ApolloError that has extensions. Nov 21, 2019 · The newData solution didn't work for me with apollo client @2. Agencies are May 31, 2020 · Is this just a closure of client / apollo client so response is held in the closure - won't it be immediately invoked? UseLazy is supposed to be at call- but i guess that doesn't matter for the client, so i guess this is really good! Example to show apollo client's MockLink incorrect work with queries with @nonreactive directive - broyde/apollo-mock-nonreactive Using different handlers, we can check how component renders different responses or errors. We need to intercept these GraphQL requests. I can mock the response correctly, however, the loading state (from: const [loading] = useQuery ()) is never true. I followed exactly the instructions and code for MockedProvider in the apollo docs here. What I want is to mock the server so I can easily test the application without needing to m I'm making unit tests for React components using apollo hooks (useQuery, useMutation), and in the tests I mock the actual queries with apollo's MockedProvider. Since we don't want to send real requests to a GraphQL API we use MockedProvider from @apollo/react-testing. Feb 17, 2021 · When testing our frontend code, we might find ourselves needing to mock GraphQL query responses. The GraphQL dataloader package comes with caching benefits, and will deduplicate the keys it makes requests for. Apollo Server uses a multi-step request pipeline to validate and execute incoming GraphQL operations. Does anyone know how to get a mocked angular-apollo client working in storybook? Jul 6, 2022 · guys. Dec 28, 2019 · In this post I will present you a quick guide how to test React components which use Apollo. Over my 15+ years designing GraphQL architectures, implementing mocking strategies has been key for rapid development workflows. 2, last published: 6 months ago. We use mock-apollo-client library to mock Apollo client and createMockApollo helper we created on top of it. 1, last published: 4 months ago. Is there an api to do that? Intended outcome: I am able to do use apollo's mock features with snapshottesting and bypass the loading step. - intuit/apollo-mock-http Apr 18, 2016 · Luckily, this takes only a little more effort: customization of mock data is really where the Apollo mocking tool shines, because it lets you customize virtually everything about the mock data that it returns. It's useful for testing specific server behaviors, such as error cases, HTTP headers, and Hi! Apollo Client maintainer here - now that we've shipped 3. Dec 6, 2021 · Also, the loading state did switch to resolved when every field in the query was returned by the mock, it just cleared it because of the fragment. Query loading state If the query was added via apollo option (i. fetch. For this, it seemed to make the most sense to employ useLazyQuery. If you’re brave enough, there’s a fork of @apollo/react-testing which implements a jest-like diffing output for query variables. This works fine using MockedProvider, as long as I specify Extension for Visual Studio Code - Tooling to help you develop and mock federated schemas using Apollo Federation Nov 27, 2022 · I've been trying to fix this problem for a couple days and I'm still at a loss. I have a query that gets data from backend, while query didn't get data I'm showing 'Loading' text. Check Apollo-mock-schema 0. Advanced usage QueueTestNetworkTransport returns Motivation Apollo provides out of the box a MockedProvider component where you can individually mock any graphql operation. Through concrete examples and comparisons, you Apr 18, 2016 · Luckily, this takes only a little more effort: customization of mock data is really where the Apollo mocking tool shines, because it lets you customize virtually everything about the mock data that it returns. Your code initiates requests directly from the Apollo Client. There are two main options for Apr 9, 2020 · I'm working on a React project that uses Storybook to mock components. Start using @vue/apollo-composable in your project by running `npm i @vue/apollo-composable`. Aug 19, 2020 · Intended outcome: After setting up MockedProvider with query mocks, uselazyquery hook should return mocked data after loading state. I’m having a hard time to mock/test this useLazyQuery case; the hook in the screen: const [ getSpecificReport, { loading: contentLoading, error: contentError, data: content }, ] = useLazyQuery< Apollo Client allows you to make local modifications to your GraphQL data by updating the cache, but sometimes it's more straightforward to update your client-side GraphQL data by refetching queries from the server. 2024-2025 Apollo Invitational Announcement You are Invited to participate in the 31st Annual Apollo Mock Trial Invitational Saturday, January 4th, 2025 Hosted by: Apollo High School, St. Dodds said it best: The more May 22, 2025 · 4 likes, 0 comments - dunmowcomedy on May 22, 2025: " COMEDY ALERT! Hal Cruttenden (seen on Live at the Apollo, Mock the Week, Have I Got News For You) is at Dunmow Comedy Club on June 6th! Don't miss him LIVE! Grab tickets now before they're gone! Link in bio! #DunmowComedy #HalCruttenden". Oct 19, 2018 · So far, the Apollo Client instance can be mocked, but one unsolved question keeps popping up: How to test Apollo Client in a React application? Separation of Apollo Client and Mock Client If you have the previous application with the mocked Apollo Client at your disposal, you can start writing tests with it. The Apollo client library includes a MockedProvider component which allows query and mutation results to be mocked, but didn't offer enough control within unit tests. A complete, minimalist example is here Aug 15, 2024 · Thanks to Apollo for making apollo hooks available for integrating GraphQL calls into UI components. The MSW team indicated that best practice is when running tests to clear the cache on every request but I want to run my app in mocks mode for manual testing too. We’ll discuss what they test, their tradeoffs, and where they belong within a comprehensive testing strategy. Dec 5, 2019 · When running e2e tests with Cypress, my goal is to mock a specific graphql query. This article teaches you how to use the third-party @graphql-tools package to mock data for Apollo Server. let mocks = [{ request: { query: DATA_QUERY, variables: {} } result: { data: {}, refetch: () => console. Is there a better way to accomplish this or am I missing something from the docs? For example, this is what I am trying to An easy and maintainable way of injecting mock data into Apollo GraphQL Client for fast feature development decoupled from API/Backend. In the app I'm using recompose styled-components react apollo-client react-apollo For testing I use jest and enzyme I have created mock queries using MockedProvider and tested my component successfully. Therefore, I take advantage of MSW's custom response composition to automatically include these scenarios in each response. index. 1. useQuery) to fetch data for some components. The InMemoryCache Jun 4, 2020 · Intended outcome: I tried to test loading state import {act, cleanup, render} from 'react-native-testing-library'; import { MockedProvider } from '@apollo/client Apollo Client react hooks API referenceThis page has been split into individual hook pages. However, GraphQL introduces schema and resolver levels that require new mocking strategies: Challenges without proper mocking Difficult to develop components in May 5, 2021 · As the Apollo ecosystem evolves we find ourselves relying extensively on the underlying functionality it provides. Subscriptions In addition to fetching data using queries and modifying data using mutations, the GraphQL spec supports a third operation type, called subscription. 1 package - Last release 0. Overview I'm building the API for a hypothetical app that displays my favourite Feb 6, 2020 · It might be a bit of an overkill, but I hate waiting a random number of seconds so I just hooked some deferred promises on the mocks so I can wait for them to finish. Test's logic is: if loading state is true, check if we Oct 6, 2021 · You can also create your own useMutation function "wrapper", use that instead of using Apollo useMutation directly, and then mock that with empty refetch queries. This pipeline supports integration with custom plugins at each step, which can affect an operation's execution. Now I'm going to design the schema (type defintions) and set up mocking functionality. Sep 6, 2017 · I'm trying to test a component that uses graphql, but when using Apollo's MockProvider I never get the data, it just says loading = true every time. This enables you to test your application's operations without communicating with a server. We need to inject VueApollo into the Vue instance by calling Vue. Feb 6, 2019 · Using MockedProvider we can mock the output which is pretty straight, e. Aug 23, 2019 · The mutation will be called with the given variables. My question is, does anyone have any techniques they have used or know a way to mock a subscription using Jest? Dec 6, 2021 · Also, the loading state did switch to resolved when every field in the query was returned by the mock, it just cleared it because of the fragment. Omitting Introduction Write Queries, Not Code Apollo Client is a flexible, community driven, GraphQL client for JavaScript. Library to help unit testing when using apollo-client. Start using mock-apollo-client in your project by running `npm i mock-apollo-client`. Guiding principles Kent C. This article describes best practices for writing integration tests using testing utilities released as experimental in v3. An easy and maintainable way of injecting mock data into Apollo GraphQL Client for fast feature development decoupled from API/Backend. There are 3 other projects in the npm registry using mock-apollo-client. Tagged with react, jest, apollo, graphql. When our component renders, useQuery returns an object from Apollo Client that contains loading, error, and data properties that we can use to render our UI. It's pretty simple: useDecider: import { useState } from 'react'; import { useQuery, gql } from… I'm using react-apollo to build a client that consumes a GraphQL API, however, I'm very stuck on testing. 0, or compare 25mocking) Mocking API responses—providing the client with fake (mock) data—is easy in GraphQL because we have a schema that tells us the structure of the data and the type of each field. The API call does not get executed and throws an error instead as stated above. Learn how you can use GraphQL queries with Apollo Client to load data from a server and display it in your VueJS components. Jun 9, 2018 · This setup is very easy to do, unfortunatly, jest will always snapshot the components while loading is true: {loading: true} and before the data arrives. You can then leverage Apollo Client's observability model to watch for changes in the cache, using client. Learn effective strategies for testing React applications using Apollo Client, including setup, mocking GraphQL operations, handling queries, mutations, and avoiding common pitfalls. However, MockedProvider cannot call the onCompleted function (handleData () in my case). Upvoting indicates when questions and answers are useful. ts import { useQuery } from "@apollo/react-hooks"; import { MENU the setup of apollo-mock-operations. Executing a query GraphQL document Let's take this example GraphQL document throughout this section: To actually use a data loader, we call its load method and pass in each key. logrocket. For modern React applications built around Suspense, suspense-enabled data fetching hooks are described in Apollo Client's Suspense docs. This makes running queries from React components a breeze. To get the most value out of Apollo Client, you should use it with one of its view layer integrations. We also have an open RFC about testing APIs which hasn't been active lately but which I will be updating in the coming weeks, so feel free to drop your own wish list/ideas/etc. This approach works extremely fine but it comes with a cost of boilerplate and as your project grows it can get out of hand the number of mocked queries/mutations etc. In the case of an Apollo client passed into a hook, the MockedProvider does not do anything. As an experienced technical coach, I‘ll share advanced techniques for mocking production-ready GraphQL APIs. The problem is that sometimes, my mock doesn't match the query actually made by the component (either a typo when creating the mock, or the component evolves and changes some query Jan 20, 2020 · You'll need to complete a few actions and gain 15 reputation points before being able to upvote. You might think you did everything correctly but still, your query returns an empty… Oct 22, 2023 · Default mock example This example demonstrates mocking a GraphQL schema with just one line of code, using apollo-server 's default mocking logic. what mockSetExcludedPullRequests returns), copy paste it to an editor and manually compare the mock request to the attempted query. It is designed from the ground up to make it easy to build UI components that fetch data with GraphQL. Nov 15, 2020 · How do you unit test (with jest and enzyme) a functional component that uses the useReactiveVar hook? Should I mock the useReactiveVar hook with jest? Integrations enable advanced functionality and unlock new workflows. Jun 25, 2019 · Handling local state with Apollo can be quite verbose. In application code, you achieve this by wrapping your component tree with the ApolloProvider component. This enables engineers to consolidate business logic, centralise state and perform advanced data manipulation. Instead, it allows you to specify the exact response payload for a given GraphQL operation. I searched and did not find anything similar or with a viable answer. In theory, you could refetch every active query after a client-side update, but you can save time and network bandwidth by refetching queries more selectively. Nest is a framework for building efficient, scalable Node. Jun 7, 2022 · My preferred debugging approach is to log the mock query object (i. You can pass an ApolloResponse to the enqueueTestResponse function, or as a shortcut, you can pass a Data directly as shown above. Subscriptions are similar to queries in that they specify a set of fields to be delivered to Mar 29, 2020 · We will be using React Testing Library, @apollo/react-testing to mock our Apollo Provider, and react-hooks-testing-library Let's start by creating our test cases and our mocked responses. there! In the short term, you may want to look at how some of our internal Apollo Client tests use custom Integrations enable advanced functionality and unlock new workflows. Jul 8, 2024 · Issue Description When testing with MockedProvider, I have provided a variableMatcher to one of my MockedResponses. However, we now enter dangerous territory where Nov 16, 2019 · This article describes how to unit test a React component with Apollo queries using React Hooks, Jest, the Apollo-provided MockedProvider, and React Testing Library. When set up, MockedProvider asserts that any requests that are passed in its setup are called. Then I tried with a custom mock: Dec 6, 2022 · Having to deal with error, empty and loading scenarios for every single request handler will start to get quite verbose. The recent version 3 has highlighted this with the introduction of domain driven type policies and local state management. The MockedProvider component is a mocked version of ApolloProvider that doesn't send network requests to your API. I hope this helps, and hopefully the apollo team will include Using MockProvider from @apollo/client/testing to mock out error state of a query. Because of this, it's important to perform integration tests with a variety of operations to ensure your request pipeline works as expected. This article shows how to use Apollo Client in a React application that doesn't make use of React's "Suspense" features. One was passed to the wrapping ApolloProvider element, whereas the other is an exported constant that gets used in UseQuery hooks, just like in the above example. Cloud In cooperation with the Stearns-Benton County Bar Association, Apollo is hosting an in person invitational scrimmage. As a workaround, for the few tests that utilize refetch I had to physically mock the useQuery function and provide mock functions for the return of refetch; for our custom hook (where an overridden useQuery hook is exported as default), it looked something like this: We are importing the useSubscription hook from @apollo/react-hooks and the graphql subscription query is defined above to fetch the online user data. Subscriptions are intended to be used to subscribe to external data changes, and have those received changes be stored in the cache. 3. Props Aug 23, 2021 · npm install --save @apollo/client graphql @graphql-tools/mock @graphql-tools/schema @testing-library/react Before we go any further, let's create a component that consumes a graphql query that we will then write tests for: Mar 20, 2023 · apollo, graphql, jest, react However when it comes to unit testing, developers often completely mock the hooks (useQuery, useMutation) provided by Apollo-Client. May 8, 2020 · Show how to run integration tests with jest for apollo server (graphql) that will test the graphql types / call the api with query and mutations / mock external dependencies like database or Sep 17, 2024 · Refetch Query with Apollo GraphQL Client The Apollo GraphQL client allows you to easily refetch query results, which can come in super handy if you need to refresh data after some user action on the page. That is, if you pass in that certain queries are going to be called with certain variables, the test will fail if it’s not called in Mar 25, 2025 · Hello all. e. code in my client tests? Or is there some way to mock this error in the client? Jun 5, 2019 · In my React storybooks, I want to be able to toy around with components that use graphQL queries and mutations (implemented with Apollo). Does anybody know what my problem here might be? Oct 15, 2020 · If you want to test how your component renders when results from the GraphQL API are still loading, you can also mock a loading state in respective Apollo queries: Feb 17, 2021 · When testing our frontend code, we might find ourselves needing to mock GraphQL query responses. apollo-elements includes support for Lit, gluon, hybrids, and Polymer, as well as providing class mixin functions so you can integrate Apollo into vanilla elements or any other web component library. I have a React app that uses Apollo Client and I want to test one component with the React testing library. However when I was performing unit testing, I was mocking the hooks (useQuery, See full list on blog. Dec 30, 2021 · I am using msw to mock my graphql server, which I query using Apollo Client. If you do pass a Data, you also need to pass an operation, because an ApolloResponse is built under the hood, which needs a reference to it. The examples have been adapted from the official Apollo testing docs where possible. Aug 10, 2021 · { loading: true, data: undefined, error: undefined } { loading: false, data: undefined, error: undefined } This means that the hook is being called and loading begins, but once loading ends whatever happened during loading neither returned any data nor generated any errors. API referenceThe MockedProvider is a test-utility that allows you to create a mocked version of the ApolloProvider that doesn't send out network requests to your API, but rather allows you to specify the exact response payload for a given request. Feb 3, 2022 · Summary : Mockprovider renders directly to { loading: false, error: "Not enough Mock data" } state, if no-cache is specified Component May 8, 2020 · Show how to run integration tests with jest for apollo server (graphql) that will test the graphql types / call the api with query and mutations / mock external dependencies like database or Sep 17, 2024 · Refetch Query with Apollo GraphQL Client The Apollo GraphQL client allows you to easily refetch query results, which can come in super handy if you need to refresh data after some user action on the page. May 16, 2020 · Looking through recommended tools might end up pointing you to apollo-client mock, but that solution breaks down when you are querying through @apollo/react-hooks. Instead you have to mock your client that you pass to UseQuery Mocking GraphQL API Pre-requisites Since we will be working with a GraphQL API, we need to have a GraphQL client installed and configured in our application. Since I have yet to build the resolvers (which retrieve data from a database or other sources), the server will now return mock data based on the schema. It can create new configurations or update an existing one for any type or introspection generation required, and bootstrap the files necessary for getting started. Future iterations of the initialization functionality will explore additional setup for external modules (id: storybook, jest, cypress, ect Apollo GraphQL for Vue Composition API. ts, however I cannot do it as the useMenu is a readonly value. Feb 7, 2022 · Use `node_modules/@apollo/client/testing/react/MockedProvider. 1 at our NPM packages aggregator and search engine. Otherwise, it will complain that no Apollo client is available. And then on top of that, its pedantic about what shape the data needs to be. Here's how to do it. With that being said, mocking Apollo queries can be repetitive and verbose, so below are some helpful utility functions written in TypeScript that make it nicer. While using React Testing Library to test components is well documented and easily Googleable, using both React Testing Library and Apollo Client together is a bit more niche. Learn how you can use GraphQL queries with Apollo Client to load data from a server and display it in your React components. Please refer to the getting started steps of the respective client. You can learn more about queries and GraphQL documents here and practice running queries in the playground. It integrates seamlessly with testing libraries like Jest and React Testing Library. We need that client primarily to dispatch queries and mutations. Jun 3, 2022 · My preferred debugging approach is to log the mock query object (i. Actual outcome: Data is undefined, and no query results are retu Dec 5, 2020 · Mike Schutte Posted on Dec 5, 2020 Loading states with Storybook and Mock Service Worker # react # storybook # graphql # testing Learn how you can use GraphQL queries with Apollo Client to load data from a server and display it in your Angular components. I wrote a hook that calls apollo useQuery. Contributed by core maintainers and the amazing developer community. Below I'll describe a few examples from the POC. 6. js server-side applications. com Jun 12, 2025 · Apollo MockProvider is especially useful for testing different query states like loading, success, and error. GraphQL subscriptions are a way to push data from the server to the clients that choose to listen to real time messages from the server. Jan 29, 2021 · I have an application that is using Apollo client and when I added MSW I am finding that the cache is returning stale requests with empty responses. It lets you do all of the following and more: Jun 25, 2020 · There were many attempts from my side to mock a client and finally I am ready to share some examples. What's reputation and how do I get it? Instead, you can save this post to reference later. Apollo provides out of the box a MockedProvider component where you can individually mock any graphql operation. js, Apollo Client and unit testing with Jest and Vue Test Utils Jul 10, 2020 · I'm currently trying to mock the useQuery from index. Now, we will pass the subscription constant to useSubscription hook. We’ll also see how to test a React component that makes use of Apollo React hooks using MockedProvider available from @apollo/react-testing The Apollo client provides two ways to send GraphQL queries: Using the Jan 22, 2024 · If you need to check the useMutaion has been called with correct parameters its easier to mock the useMutation in appollo. Latest version: 1. 16) MockedProvider and Jest + react testing library to test a component which using useLazyQuery with onCompleted attribute. We‘ll explore the popular graphql-tools mocking library while also covering alternatives like MirageJS. It's pretty simple: useDecider: import { useState } from 'react'; import { useQuery, gql } from '@apollo/client'; export const GET_DECIDER = gql` query GraphQL Testing Library provides utilities that make it easy to generate Mock Service Worker handlers for any GraphQL API. use(VueApollo). The Project will collaborate with source system owners (e. This package MockServer implements an HTTP server that you can use to mock responses. 0 (tag 25_0. log('refetch mocked') } }] <MockedProvider mocks={mocks} addTypename={false}> <ComponentToTest /> </MockedProvider> This gives me successful mocked output when executing DATA_QUERY <Query query={DATA_QUERY Feb 5, 2021 · Bringing our unit test coverage up to speed has been a process. In your tests, you use the MockedProvider component instead. there! In the short term, you may want to look at how some of our internal Apollo Client tests use custom Hi! Apollo Client maintainer here - now that we've shipped 3. And it’s super easy with Apollo Server—we just add mock: true: May 22, 2020 · Intended outcome: I need to show a component's loading state in storybook. When working with REST APIs, developers often mock at the integration level by stubbing out HTTP requests and responses. ts import { useQuery } from "@apollo/react-hooks"; import { MENU Apollo GraphQL for Vue Composition API. g. It uses progressive JavaScript, is built with TypeScript and combines elements of OOP (Object Oriented Programming), FP (Functional Programming), and FRP (Functional Reactive Programming). These testing tools allow developers to execute queries against a schema configured with mock resolvers and default scalar values in order to test an entire Apollo Client application, including the link chain. Sep 18, 2021 · I am using Apollo Client (3. We recently introduced Apollo react hooks (i. During feature developments, many teams face the I wrote a hook that calls apollo useQuery. 8, improving our testing story is on our roadmap. import React from 'react' import { MockedProvider } from '@apollo/react-testing' import { LATEST_SELL_SIGNALS } from '~/common/queries' import LatestSells from Queries Fetching data involves executing query operations using standard GraphQL documents. There are 77 other projects in the npm registry using @vue/apollo-composable. Mar 14, 2022 · Execute GraphQL queries in response to events made by your application using the useLazyQuery hook. At firs Tagged with react, graphql, testing, javascript. Let's put all of that into code. Latest version: 4. When running the test, the tests still pass but there is a console warning about Jan 26, 2023 · I have tried various ways to mock the apolloClient with no luck. When using the @apollo/client library, I ran into issues trying to unit test React components which called GraphQL queries and mutations. Every test for a React component that uses Apollo Client must make Apollo Client available on React's context. Components utilizing React Apollo, the React implementation of Apollo Client, are no exception. 1, last published: a year ago. The Apollo client documentation for testing can be found here. Tests in this article are rather integration that unit tests because we test component and Apollo Client in combination This article assumes some prior knowledge of Vue. Through a series of conversions, “mock” and then final, the Project is responsible for performing conversions, extracting agency legacy data from source systems, transforming that data, and loading it in Florida PALM. Specifically, some of the Oct 8, 2020 · The interface of the mock implies that it will do that, but instead it also has the overhead of requiring the user to deal with the asynchronous loading. I would like to create a class that returns mock responses from the Apollo Client but haven’t quite figured out how to do this. The setup: in our web app, it’s pretty common for us to query data based on user interaction, like doing a search. Jun 21, 2018 · 2 I'm following the docs provided by Apollo GraphQL for testing React component mutations using MockedProvider. For the most up-to-date information on @graphql-tools, we recommend referencing their documentation. Loading States Loading states can be tested easily in your test framework of choice by simply mocking a query with MockedProvider. Apollo GraphQL client is the default client for many enterprises for GraphQL data fetching on the browser side. d. If your testing your error state, this might come in handy. 2. So there should be some api to disable this loading step. , Department of Financial Services and People First) to obtain the necessary data for conversion. Dec 16, 2023 · Apollo Client refetching study Overview Apollo Client allows you to make local modifications to your GraphQL data by updating the cache, but sometimes it’s more straightforward to update your … Mar 25, 2022 · 1 mock-apollo-client always use the with ApolloProvider, so that you pass the mock apollo client via React context Provider to descendant components. To get started with the Angular integration, go to Get Started Subscriptions cannot be used to listen to local client events, like subscribing to changes in the cache. 4. Oct 2, 2020 · I was using apollo-testing-library for writing integration tests, It allows me to mutate and query but not subscribe and test. on component creation), we just need to mount a component and check if our loading state is rendered correctly (at this moment query is not resolved): Intended outcome: After setting up MockedProvider with query mocks, uselazyquery hook should return mocked data after loading state. In this example, we’ll see how to use the new useQuery hook available from the apollo react-hooks package to send GraphQL queries and receive response with fetched data from APIs. This library currently supports incremental delivery features @defer and @stream out of the box, with plans to support subscriptions over Sep 24, 2021 · Apollo's MockProvider is a great tool for testing mutations, however it's a little bit magical, making errors a little difficult to find. May 26, 2025 · Hello, I am currently trying to make tests using the Apollo Client and I would like to get realistic mocked responses from the Apollo Client. First, apologies if there is already a topic for this. Note: Check out the official Apollo docs on the useQuery hook to learn more about this function. To help create your mocked response data, you can use test builders. The Problem When we render a component that makes use of Apollo we need to wrap it with an Apollo provider. 10. However, your code cannot pass the mock apollo client to the component in this way. Apr 22, 2021 · This article will discuss three different approaches to testing Apollo Client applications: unit, integration, and end-to-end tests. The examples below use React, Jest and React Testing Library, but mock-apollo-client is standalone and can used with any libraries and test frameworks. MSW is the Testing Library-recommended way to declaratively mock API communication in your tests without stubbing window. Jan 20, 2022 · I've faced a similar issue where we had two Apollo clients in our codebase. It lets you do all of the following and more: Jul 10, 2020 · I'm currently trying to mock the useQuery from index. Although React Apollo has a lot going on under the hood, the library provides multiple tools for testing that simplify those abstractions, and allows complete focus on the component logic. Mocking If you’re jumping in here, git checkout 25_0. The <MockedProvider /> component takes the following props: Apr 10, 2021 · I've set up a React app with Apollo to have a wrapper component that handles loading data from the network, so that each component underneath can query the data straight from the Apollo cache without Library to help unit testing when using apollo-client. Select a hook from the navigation sidebar to view its documentation. ts` to mock the graphql api call in a test case. Now I want to test it, but I can't. I did this mostly because in our project we are using multiple apollo providers so we had random failing tests due to CPU differences between local and CI servers. So, for me, it was a two-step solution of checking queried fields against mocks and then removing the fragment. Currently, I can mock all requests like this: Aug 14, 2024 · Why Mocking is Critical for GraphQL Mocking data and services is vital for building robust frontend applications. . watchQuery, useQuery, or useFragment. Our general use case is pretty straight forward: Page/containing component Jun 2, 2022 · Mock data injection into Apollo Client using apollo-mock-http Announcements client , web 1 413 February 6, 2025 Mocking apollo-angular in storybook Client SDKs client , web 0 750 January 26, 2023 Apollo Client useLazyQuery making request 4-6 times Client SDKs client , mobile , ios 4 1010 April 24, 2024 Unable to mock errors when query contains Mar 26, 2021 · Previously in this series, I made a GraphQL server that returns nothing. ayvgx isem blw zdbrtt wgco nkkh pbsz bxzzpan sbz hnf uiva sceftcdp llcucx dgfrqi tvwwtg