mocking-gql-api

mock.ts

import express from "express"
import { createYoga } from "graphql-yoga";
import { makeExecutableSchema } from "graphql-tools";

const app = express();

// GraphQL Schema
const schema = makeExecutableSchema({
  typeDefs,
  resolvers,
});

// could be apollo server
const yoga = createYoga({
  schema,
});

app.use("/graphql", yoga);

// In test file -----------------------------------------
import supertest from "supertest";

describe("test", () => {
  test("should call the graphql api", async () => {
    const query = `
        mutation {
            signIn(email: $email, password: $password) {
                token
            }
        }
    `;

    const variables = {
      email,
      newPassword,
    };

    // make a mock call to the server at /graphql
    const response = await supertest(app)
      .post("/graphql")
      .send({ query, variables })
      .set("Accept", "application/json")
      .expect("Content-Type", /json/);

    const body = await response.body;
  });
});