require 'spec_helper'

describe Rack::DevMark do
  subject { Rack::DevMark }
  describe "::env" do
    it "returns development as default" do
      ENV['RAILS_ENV'] = nil
      ENV['RACK_ENV'] = nil
      expect(subject.env).to eq('development')
    end
    it "returns rack_env" do
      ENV['RAILS_ENV'] = nil
      ENV['RACK_ENV'] = 'abc'
      expect(subject.env).to eq('abc')
    end
    it "returns rails_env instead of rack_env" do
      ENV['RACK_ENV'] = 'abc'
      ENV['RAILS_ENV'] = 'def'
      expect(subject.env).to eq('def')
    end
    it "returns rack_dev_mark_env instead of rails_env" do
      ENV['RACK_ENV'] = 'abc'
      ENV['RAILS_ENV'] = 'def'
      ENV['RACK_DEV_MARK_ENV'] = 'ghi'
      expect(subject.env).to eq('ghi')
    end
  end
  describe "::env=" do
    it "sets custom env" do
      subject.env = 'custom'
      expect(subject.env).to eq('custom')
    end
  end
  describe "::revision" do
    after do
      ::File.delete('REVISION') if ::File.exists?('REVISION')
      subject.instance_variable_set("@revision", nil)
    end
    it "returns revision" do
      ::File.open('REVISION', 'w') do |f|
        f.write('abcde')
      end
      expect(subject.revision).to eq('abcde')
    end
    it "returns nil if REVISION does not exist" do
      expect(subject.revision).to eq(nil)
    end
  end
  describe "::revision=" do
    it "sets custom revision" do
      subject.revision = 'custom'
      expect(subject.revision).to eq('custom')
    end
  end
  describe "::timestamp" do
    let(:time) { Time.new(2000, 1, 2) }
    after do
      ::File.delete('REVISION') if ::File.exists?('REVISION')
      subject.instance_variable_set("@timestamp", nil)
    end
    it "returns timestamp" do
      ::FileUtils.touch 'REVISION', mtime: time
      expect(subject.timestamp).to eq(time)
    end
    it "returns nil if REVISION does not exist" do
      expect(subject.timestamp).to eq(nil)
    end
  end
  describe "::timestamp=" do
    it "sets custom timestamp by string" do
      subject.timestamp = '2014/3/1'
      expect(subject.timestamp).to eq(Time.new(2014, 3, 1))
    end

    it "sets custom timestamp by time object" do
      subject.timestamp = Time.new(2014, 4, 1)
      expect(subject.timestamp).to eq(Time.new(2014, 4, 1))
    end
  end
  describe "::rack_dev_mark_env" do
    it "returns nil" do
      ENV['RACK_DEV_MARK_ENV'] = nil
      expect(subject.rack_dev_mark_env).to eq(nil)
    end
    it "returns nil" do
      ENV['RACK_DEV_MARK_ENV'] = ''
      expect(subject.rack_dev_mark_env).to eq(nil)
    end
    it "returns custom value" do
      ENV['RACK_DEV_MARK_ENV'] = 'abc'
      expect(subject.env).to eq('abc')
    end
  end
end