require 'spec_helper'

describe Gatling::Configuration do

  after :each do
      Gatling::Configuration.reference_image_path = nil
      Gatling.reference_image_path = nil
  end

  describe "#reference_image_path" do


    describe "Without Rails" do
      it "should default to './spec/reference_images' when not in a rails environment" do
        Gatling::Configuration.reference_image_path.should eql("spec/reference_images")
      end
    end

    describe "with rails" do

      before do
        begin
          # Check that rails exists, otherwise fake it for the test
          Module.const_get("Rails")
        rescue NameError
          module Rails
            def self.root
              "fake_rails_root"
            end
          end
        end
      end

      it "should default to <Rails.root>/spec/reference_images in a rails environment" do
        Gatling::Configuration.reference_image_path.should eql("fake_rails_root/spec/reference_images")
      end

      it "should be overrideable in a rails environment" do
        Gatling::Configuration.reference_image_path = "my custom path"
        Gatling::Configuration.reference_image_path.should eql("my custom path")
      end

    end
  end

  describe '#trainer_toggle' do

    it 'should default to false' do
      subject.trainer_toggle.should eql(false)
    end

    it 'can be toggled to true' do
      Gatling::Configuration.trainer_toggle = true
      subject.trainer_toggle.should eql(true)
    end

    it 'toggeled using GATLING_TRAINER = false' do
      ENV['GATLING_TRAINER'] = 'false'
      subject.trainer_toggle.should eql(false)
    end

    it 'toggeled using GATLING_TRAINER = true' do
      ENV['GATLING_TRAINER'] = 'true'
      subject.trainer_toggle.should eql(true)
    end

    it 'toggeled using GATLING_TRAINER = nil' do
      ENV['GATLING_TRAINER'] = nil
      subject.trainer_toggle.should eql(false)
    end

    after(:each) do
      Gatling::Configuration.trainer_toggle = false
      ENV['GATLING_TRAINER'] = nil
    end
  end

  describe 'paths' do
    it 'should return the directory for a type of image' do
      Gatling::Configuration.reference_image_path = "a_path"
      subject.path(:temp).should == 'a_path/temp'
    end

    it 'should thrown an error when you ask for the path of an unknown image type' do
      expect { Gatling::Configuration.path(:unknown)}.should raise_error "Unkown image type 'unknown'"
    end
  end

  describe "#max_no_tries" do

      it "should default to 5" do
        subject.max_no_tries.should == 5
      end

      it "should be settable" do
        Gatling::Configuration.max_no_tries = 1
        subject.max_no_tries.should == 1
      end
  end

  describe "#sleep_between_tries" do

    it "should default to 0.5" do
      subject.sleep_between_tries.should == 0.5
    end

    it "should be settable" do
      Gatling::Configuration.sleep_between_tries = 55
      subject.sleep_between_tries.should eql 55
    end
  end

  describe "settings" do

    it "should accept a block of settings and parse them correctly" do
      Gatling.config do |setting|
        Gatling.reference_image_path = 'custom_path'
        Gatling.max_no_tries = 3
        Gatling.sleep_between_tries = 0.7
      end
      subject.reference_image_path.should eql 'custom_path'
      subject.max_no_tries.should eql 3
      subject.sleep_between_tries.should eql 0.7
    end

  end

end