# encoding: utf-8
require 'spec_helper'

describe Imap::Backup::Utils do
  let(:filename) { 'foobar' }
  let(:stat) { double('File::Stat', :mode => mode) }
  let(:mode) { 0777 }
  let(:exists) { true }

  before do
    allow(File).to receive(:stat).and_return(stat)
    allow(File).to receive(:exist?).with(filename).and_return(exists)
  end

  context '.check_permissions' do
    let(:requested) { 0345 }

    context 'with existing files' do
      [
        [0100, 'less than the limit', true],
        [0345, 'equal to the limit', true],
        [0777, 'over the limit', false],
      ].each do |mode, description, success|
        context "when permissions are #{description}" do
          let(:mode) { mode }

          if success
            it 'succeeds' do
              described_class.check_permissions(filename, requested)
            end
          else
            it 'fails' do
              expect do
                described_class.check_permissions(filename, requested)
              end.to raise_error(RuntimeError, format("Permissions on '%s' should be 0%o, not 0%o", filename, requested, mode))
            end
          end
        end
      end
    end

    context 'with non-existent files' do
      let(:exists) { false }
      let(:mode) { 0111 }

      it 'succeeds' do
        described_class.check_permissions(filename, requested)
      end
    end
  end

  context '.stat' do
    context 'with existing files' do
      let(:mode) { 02345 }

      it 'is the last 9 bits of the file mode' do
        expect(described_class.stat(filename)).to eq(0345)
      end
    end

    context 'with non-existent files' do
      let(:exists) { false }

      it 'is nil' do
        expect(described_class.stat(filename)).to be_nil
      end
    end
  end

  context '.make_folder' do
    before do
      allow(FileUtils).to receive(:mkdir_p)
      allow(FileUtils).to receive(:chmod)
    end

    it 'does nothing if an empty path is supplied' do
      described_class.make_folder('aaa', '', 0222)

      expect(FileUtils).to_not have_received(:mkdir_p)
    end

    it 'creates the path' do
      described_class.make_folder('/base/path', 'new/folder', 0222)

      expect(FileUtils).to have_received(:mkdir_p).with('/base/path/new/folder')
    end

    it 'sets permissions on the path' do
      described_class.make_folder('/base/path/new', 'folder', 0222)

      expect(FileUtils).to have_received(:chmod).with(0222, '/base/path/new/folder')
    end
  end
end