Contents

require "spec_helper"

describe GraphQL::UnionType do
  let(:type_1) { OpenStruct.new(kind: GraphQL::TypeKinds::OBJECT)}
  let(:type_2) { OpenStruct.new(kind: GraphQL::TypeKinds::OBJECT)}
  let(:type_3) { OpenStruct.new(kind: GraphQL::TypeKinds::SCALAR)}
  let(:union) {
    types = [type_1, type_2]
    GraphQL::UnionType.define {
      name("MyUnion")
      description("Some items")
      possible_types(types)
    }
  }
  it "has a name" do
    assert_equal("MyUnion", union.name)
  end


  it "infers type from an object" do
    assert_equal(CheeseType, DairyProductUnion.resolve_type(CHEESES[1], OpenStruct.new(schema: DummySchema)))
  end

  it '#include? returns true if type in in possible_types' do
    assert union.include?(type_1)
  end

  it '#include? returns false if type is not in possible_types' do
    assert_equal(false, union.include?(type_3))
  end

  describe "list of union type" do
    describe "fragment spreads" do
      let(:result) { DummySchema.execute(query_string) }
      let(:query_string) {%|
        {
          allDairy {
            __typename
            ... milkFields
            ... cheeseFields
          }
        }
        fragment milkFields on Milk {
          id
          source
          origin
          flavors
        }

        fragment cheeseFields on Cheese {
          id
          source
          origin
          flavor
        }
      |}

      it "resolves the right fragment on the right item" do
        all_dairy = result["data"]["allDairy"]
        cheeses = all_dairy.first(3)
        cheeses.each do |cheese|
          assert_equal "Cheese", cheese["__typename"]
          assert_equal ["__typename", "id", "source", "origin", "flavor"], cheese.keys
        end

        milks = all_dairy.last(1)
        milks.each do |milk|
          assert_equal "Milk", milk["__typename"]
          assert_equal ["__typename", "id", "source", "origin", "flavors"], milk.keys
        end
      end
    end
  end
end

Version data entries

7 entries across 7 versions & 1 rubygems

Version	Path
graphql-0.18.2	spec/graphql/union_type_spec.rb
graphql-0.18.1	spec/graphql/union_type_spec.rb
graphql-0.18.0	spec/graphql/union_type_spec.rb
graphql-0.17.2	spec/graphql/union_type_spec.rb
graphql-0.17.1	spec/graphql/union_type_spec.rb
graphql-0.17.0	spec/graphql/union_type_spec.rb
graphql-0.16.1	spec/graphql/union_type_spec.rb