jest / mocha / chai for GraphQL api - apollo-server-testing

use Jest:

"test": "jest"

use mocha:

package.json

"test": "mocha --require @babel/register ./test/*.test.js"

const { createTestClient } = require("apollo-server-testing");
const { testServer, baseContext } = require("./test-utils/test-server");

const { query, mutate } = createTestClient(testServer);

test("something", async () => {
  // set / reset / merge the context as needed before calling query or mutate
  testServer.mergeContext({
    req: { headers: { Authorization: `Bearer ${token}` } },
  });

  const res = await query({ query, variables });
  expect(res)...
});