# frozen_string_literal: true

require 'tataru'

describe Tataru::Representations::ResourceRepresentation do
  it 'has a dependency on itself' do
    rr = Tataru::Representations::ResourceRepresentation.new('file', Tataru::BaseResourceDesc.new, {})

    expect(rr.dependencies).to eq ['file']
  end

  it 'releases outputs' do
    desc = Tataru::BaseResourceDesc.new
    rr = Tataru::Representations::ResourceRepresentation.new('file', desc, {})

    allow(desc).to receive(:output_fields) { [:created_at] }

    expect(rr.created_at).to be_a(Tataru::Representations::OutputRepresentation)
    expect(rr.created_at.resource_name).to eq 'file'
    expect(rr.created_at.output_field_name).to eq :created_at
  end

  it 'throws error if required field not filled' do
    desc = Tataru::BaseResourceDesc.new
    rr = Tataru::Representations::ResourceRepresentation.new('file', desc, {})
    allow(desc).to receive(:immutable_fields) { [:filename] }
    allow(desc).to receive(:required_fields) { [:filename] }

    expect { rr.check_required_fields! }.to raise_error "Required field 'filename' not provided in 'file'"
  end

  it 'throws error when no such output' do
    desc = Tataru::BaseResourceDesc.new
    rr = Tataru::Representations::ResourceRepresentation.new('file', desc, {})

    allow(desc).to receive(:output_fields) { [:created_at] }

    expect { rr.updated_at }.to raise_error NoMethodError
  end

  it 'throws error when no such output' do
    desc = Tataru::BaseResourceDesc.new
    allow(desc).to receive(:needs_remote_id?) { false }
    allow(desc).to receive(:delete_at_end?) { true }

    expect { Tataru::Representations::ResourceRepresentation.new('file', desc, {}) }.to raise_error(
      'must need remote id if deletes at end'
    )
  end
end