gistfile1.txt

require 'rails_helper'

RSpec.describe FileIntegrityValidator do
  class TestClass
    include ActiveModel::Model
    attr_accessor :file_path, :content_type

    validates_with FileIntegrityValidator
  end

  subject(:validated_object) do
    TestClass.new(content_type: 'application/pdf', file_path: file_path)
  end

  describe 'validating a clean file' do
    let(:file_path) { Rails.root.join('spec/fixtures/pdfs/clean.pdf') }

    it { is_expected.to be_valid }
    specify do
      expect(ExceptionHandler).not_to receive(:notify)
      validated_object.valid?
    end
  end

  describe 'validating a corrupt file' do
    let(:file_path) { Rails.root.join('spec/fixtures/pdfs/corrupt.pdf') }
    let(:errors) { ['File path File is corrupt'] }
    let(:message) { 'This means we have rejected a corrupt file. No further action is needed' }

    it { is_expected.to be_invalid }
    specify do
      expect { validated_object.valid? }
        .to change { validated_object.errors.full_messages }
        .to eq(errors)
    end
    specify do
      expect(ExceptionHandler).not_to receive(:notify)
        .with(instance_of(MiniMagick::Invalid), message)
      validated_object.valid?
    end
  end
end