shared_examples "acts as imageable" do |imageable_factory|
  let!(:image) { build(:image, imageable_factory.to_sym) }

  it "is valid" do
    expect(image).to be_valid
  end

  describe "file extension" do
    it "is not valid with '.png' extension" do
      image.attachment = fixture_file_upload("clippy.png")

      expect(image).not_to be_valid
      expect(image.errors[:attachment].size).to eq(1)
    end

    it "is not valid with '.gif' extension" do
      image.attachment = fixture_file_upload("clippy.gif")

      expect(image).not_to be_valid
      expect(image.errors[:attachment].size).to eq(1)
    end

    it "is valid with '.jpg' extension" do
      image.attachment = fixture_file_upload("clippy.jpg")

      expect(image).to be_valid
    end
  end

  describe "image dimmessions" do
    it "is valid when image dimmessions are 475X475 at least" do
      expect(image).to be_valid
    end

    it "is not valid when image dimmensions are smaller than 475X475" do
      image.attachment = fixture_file_upload("logo_header.jpg")

      expect(image).not_to be_valid
    end
  end

  describe "title" do
    it "is not valid when correct image attached but no image title provided" do
      image.title = ""

      expect(image).not_to be_valid
    end

    it "is not valid when image title is too short" do
      image.title = "a" * 3

      expect(image).not_to be_valid
    end

    it "is not valid when image title is too long" do
      image.title = "a" * 81

      expect(image).not_to be_valid
    end
  end
end