Mutations Prototype (POC) #74

[paliarush]

Description

• Added mutation support
• Added GraphQL functional test as an example of how to add mutations

Fixed Issues (if relevant)

1. Mutations Prototype (POC) #74: Mutations Prototype (POC)

Manual testing scenarios

1. Install TestModule*
2. Run the following request in GraphiQL:

mutation {
  testItem(id: 4) {
    item_id,
    name,
    integer_list
  }
}

Contribution checklist

• Pull request has a meaningful description of its purpose
• All commits are accompanied by meaningful commit messages
• All new or changed code is covered with unit/integration tests (if applicable)
• All automated tests passed successfully (all builds on Travis CI are green)

[magento-cicd2]

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