How to make dummy context when testing graphql resolvers?

Question

I want to test some graphql mutations. but I am not sure what to give as context while writing test. for example, I want to call createPost mutation:

it('admin should create a post', async () => {
    await createPost(
      null,
      {
        title: 'How to write a blog post',
        body: 'lorem ipsum dollar emmet',
        published: true,
      },
      dummyContext
    ).should.be.fulfilled;
  });

here as a dummyContext I am using this:

  const dummyContext = {
    request: { get: () => token },
  };

but, it is not working. Inside createPost mutation logincheker method is called:

export async function loginChecker({ request }) {
  const Authorization = request.get('Authorization');
  if (Authorization) {
    const token = Authorization.replace('Bearer ', '');
    const userInJwt = jwtValidator(token);
    const user = await prisma.user.findOne({ where: { id: userInJwt.id } });
    if (!user) {
      throw new Error('Not Authorized');
    }
    return user;
  }
}

and I am getting this error while running the test cases

AssertionError: expected promise to be fulfilled but it was rejected with 'TypeError: Authorization.replace is not a function

score 0 · Answer 1 · answered Jun 08 '20 at 08:13

If you're looking for Integrations tests, you do not need to mock the Context. You can directly run the server against an actual database as I have created here. In the __tests__ folder, I have run it against the actual server and so you don't need to mock the Context and can directly call the API against the DB.

How to make dummy context when testing graphql resolvers?

1 Answers1