pokemon.trade/spec/graphql/pokemon_trade_schema_spec.rb

# frozen_string_literal: true

require 'rails_helper'

RSpec.describe PokemonTradeSchema, type: :graphql do
  let(:object) { create(:pokemon) }

  it 'has the base mutation' do
    expect(described_class.mutation).to eq ::Types::MutationType.to_graphql
  end

  it 'has the base query' do
    expect(described_class.query).to eq ::Types::QueryType.to_graphql
  end

  describe '.id_from_object' do
    subject { described_class.id_from_object(object, Types::PokemonType, {}) }

    it 'encodes the id' do
      expect(GraphQL::Schema::UniqueWithinType).to receive(:encode)
      subject
    end
  end

  describe '.object_from_id' do
    subject { described_class.object_from_id('', {}) }

    it 'decodes the id' do
      expect(GraphQL::Schema::UniqueWithinType)
        .to receive(:decode).and_return([object.class.to_s, object.id])
      expect(subject).to eq(object)
    end
  end

  describe '.resolve_type' do
    subject { described_class.resolve_type(nil, object, {}) }

    context 'when resolves Pokemon' do
      # GraphQL::Schema wraps the overriden `.resolve_type`, so the return type
      # isn't actually `Types::PokemonType`
      specify { expect { subject }.not_to raise_error }
    end

    context 'when errors on other types' do
      let(:object) { Object }

      specify { expect { subject }.to raise_error(APIError::BaseError) }
    end
  end
end