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2026-07-29 16:01
GraphQL

Update Mutation

QueryParseValidateMedium
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Description

Update an existing resource with partial data.

Test Scenario

const mutation = `
  mutation UpdateUser($id: ID!, $input: UpdateUserInput!) {
    updateUser(id: $id, input: $input) {
      id
      name
      updatedAt
    }
  }
`;
Endpoint/api/graphql

Testing Tips

  • •Only send fields to update
  • •Handle null vs undefined
  • •Return updated fields
// Playwright API Testing - GraphQL
import { test, expect } from '@playwright/test';


test('GraphQL query', async ({ request }) => {
  const response = await request.post('/api/graphql', {
    data: {
      query: `
        query {
          users {
            id
            name
            email
          }
        }
      `
    }
  });


  expect(response.ok()).toBeTruthy();
  const { data } = await response.json();
  expect(data.users).toBeDefined();
});

Challenge ID: graphql-mutation-update

2 frameworks available

API Playground

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Endpoint: /api/graphql

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