input types to create objects

[keski]

This issue covers parts of Section 5 of issue #1.

Add input types to create objects.

• Implementation added
• Tests created
• All tests passed

[keski]

I went with naming the types according to the spec (i.e. DataToCreateX), for the naming of the generated input types.

@rcapshaw

[keski]

The code should now cover cases involving wrapped fields and cases where loops may occur. For now, test cases should cover:

type A {
   b1: B
   b2: B!
   b3: [B]
   b4: [B!]
   b5: [B]!
   b6: [B!]!
}

type B {
   a: A
}

@rcapshaw

[keski]

Now covers DataToCreateYOfX as stated in 5.1 Creating an Object of the spec. Example:

type Person {
  id: ID!
  name: String
  age: Int
  pet: [Dog]
}

type Dog {
  id: ID!
  name: String
}

input DataToConnectPetOfPerson {
  connect: ID
  create: DataToCreateDog
}

input DataToCreateDog {
  id: ID!
  name: String
}

input DataToCreatePerson {
  id: ID!
  name: String
  age: Int
  pet: [DataToConnectPetOfPerson]
}

type Mutation {
  createPerson(data: DataToCreatePerson): Person
  createDog(data: DataToCreateDog): Dog
}

[keski]

Moving the tasks related to tests to a separate issue (#23)