photo_spec.rb

RSpec.describe Photo
  let(:house) { House.create! }
  subject { described_class.new(house: house) }

  it 'is marked as cover when saved' do
    expect {
      subject.save!
      subject.reload
    }.to change(subject, :cover).to(true)
  end

  it 'overwrites the previous cover photo when created as cover' do
    old_cover = described_class.create!(house: house, cover: true)

    subject.cover = true

    expect {
      subject.save!
      old_cover.reload
    }.to change(old_cover, :cover).to(false)
  end

  it 'overwrites the previous cover photo when marked as cover' do
    old_cover = described_class.create!(house: house, cover: true)

    expect {
      subject.update!(cover: true)
      old_cover.reload
    }.to change(old_cover, :cover).to(false)
  end

  it 'marks the other photo as the cover when destroyed' do
    photo2 = described_class.create(house: house)

    subject.cover = true
    subject.save!

    expect {
      subject.destroy!
      photo2.reload
    }.to change(photo2, :cover).to(true)
  end
end