describe Gon::Global do

  before(:each) do
    Gon::Global.clear
    Gon::Request.instance_variable_set(:@request_env, nil)
  end

  describe '#all_variables' do

    it 'returns all variables in hash' do
      Gon.global.a = 1
      Gon.global.b = 2
      Gon.global.c = Gon.global.a + Gon.global.b
      expect(Gon.global.c).to eq(3)
      expect(Gon.global.all_variables).to eq({ 'a' => 1, 'b' => 2, 'c' => 3 })
    end

    it 'supports all data types' do
      Gon.global.int          = 1
      Gon.global.float        = 1.1
      Gon.global.string       = 'string'
      Gon.global.symbol       = :symbol
      Gon.global.array        = [1, 'string']
      Gon.global.hash_var     = { :a => 1, :b => '2' }
      Gon.global.hash_w_array = { :a => [2, 3] }
      Gon.global.klass        = Hash
    end

  end

  describe '#include_gon' do

    before(:each) do
      Gon.clear
      expect(ActionView::Base.instance_methods).to include(:include_gon)
      @base = ActionView::Base.new
      @base.request = request
    end

    it 'outputs correct js with an integer' do
      Gon.global.int = 1
      expect(@base.include_gon).to eq("<script>" +
                                    "\n//<![CDATA[\n" +
                                    "window.gon={};" +
                                    "gon.global={\"int\":1};" +
                                    "\n//]]>\n" +
                                  "</script>")
    end

    it 'outputs correct js with an integer and integer in Gon' do
      Gon.int = 1
      Gon.global.int = 1
      expect(@base.include_gon).to eq("<script>" +
                                    "\n//<![CDATA[\n" +
                                    "window.gon={};" +
                                    "gon.global={\"int\":1};" +
                                    "gon.int=1;" +
                                    "\n//]]>\n" +
                                  "</script>")
    end

    it 'outputs correct js with a string' do
      Gon.global.str = %q(a'b"c)
      expect(@base.include_gon).to eq("<script>" +
                                    "\n//<![CDATA[\n" +
                                    "window.gon={};" +
                                    "gon.global={\"str\":\"a'b\\\"c\"};" +
                                    "\n//]]>\n" +
                                  "</script>")
    end

    it 'outputs correct js with a script string' do
      Gon.global.str = %q(</script><script>alert('!')</script>)
      escaped_str = "\\u003c/script\\u003e\\u003cscript\\u003ealert('!')\\u003c/script\\u003e"
      expect(@base.include_gon).to eq("<script>" +
                                    "\n//<![CDATA[\n" +
                                    "window.gon={};" +
                                    "gon.global={\"str\":\"#{escaped_str}\"};" +
                                    "\n//]]>\n" +
                                  "</script>")
    end

    it 'outputs correct js with a unicode line separator' do
      Gon.global.str = "\u2028"
      expect(@base.include_gon).to eq("<script>" +
                                    "\n//<![CDATA[\n" +
                                    "window.gon={};" +
                                    "gon.global={\"str\":\"&#x2028;\"};" +
                                    "\n//]]>\n" +
                                  "</script>")
    end

    it 'outputs locally overridden value' do
      Gon.str = 'local value'
      Gon.global.str = 'global value'
      expect(@base.include_gon(global_root: '')).to eq("<script>" +
                                     "\n//<![CDATA[\n" +
                                     "window.gon={};" +
                                     "gon.str=\"local value\";" +
                                     "\n//]]>\n" +
                                     "</script>")
    end

    it "includes the tag attributes in the script tag" do
      Gon.global.int = 1
      expect(@base.include_gon(nonce: 'test')).to eq("<script nonce=\"test\">" +
                                    "\n//<![CDATA[\n" +
                                    "window.gon={};" +
                                    "gon.global={\"int\":1};" +
                                    "\n//]]>\n" +
                                  "</script>")
    end

  end

  it 'returns exception if try to set public method as variable' do
    expect { Gon.global.all_variables = 123 }.to raise_error(RuntimeError)
    expect { Gon.global.rabl = 123 }.to raise_error(RuntimeError)
  end

  context 'with jbuilder and rabl' do

    before :each do
      controller.instance_variable_set('@objects', objects)
    end

    let(:controller) { ActionController::Base.new }
    let(:objects) { [1, 2] }

    it 'works fine with rabl' do
      Gon.global.rabl :template => 'spec/test_data/sample.rabl', :controller => controller
      expect(Gon.global.objects.length).to eq(2)
    end

    it 'works fine with jbuilder' do
      Gon.global.jbuilder :template => 'spec/test_data/sample.json.jbuilder', :controller => controller
      expect(Gon.global.objects.length).to eq(2)
    end

    it 'should throw exception, if use rabl or jbuilder without :template' do
      expect { Gon.global.rabl }.to raise_error(RuntimeError)
      expect { Gon.global.jbuilder }.to raise_error(RuntimeError)
    end

  end

  after(:all) do
    Gon.global.clear
  end

  def request
    @request ||= double 'request', :env => {}
  end

end