require_relative '../../enumerable/shared/enumeratorized'

describe :env_each, shared: true do
  it "returns each pair" do
    orig = ENV.to_hash
    e = []
    begin
      ENV.clear
      ENV["foo"] = "bar"
      ENV["baz"] = "boo"
      ENV.send(@method) { |k, v| e << [k, v] }
      e.should include(["foo", "bar"])
      e.should include(["baz", "boo"])
    ensure
      ENV.replace orig
    end
  end

  it "returns an Enumerator if called without a block" do
    ENV.send(@method).should be_an_instance_of(Enumerator)
  end

  before :all do
    @object = ENV
  end
  it_should_behave_like :enumeratorized_with_origin_size

  describe "with encoding" do
    before :each do
      @external = Encoding.default_external
      @internal = Encoding.default_internal

      Encoding.default_external = Encoding::ASCII_8BIT

      @locale_encoding = Encoding.find "locale"
    end

    after :each do
      Encoding.default_external = @external
      Encoding.default_internal = @internal
    end

    it "uses the locale encoding when Encoding.default_internal is nil" do
      Encoding.default_internal = nil

      ENV.send(@method) do |key, value|
        key.encoding.should equal(@locale_encoding)
        value.encoding.should equal(@locale_encoding)
      end
    end

    it "transcodes from the locale encoding to Encoding.default_internal if set" do
      Encoding.default_internal = internal = Encoding::IBM437

      ENV.send(@method) do |key, value|
        key.encoding.should equal(internal)
        if value.ascii_only?
          value.encoding.should equal(internal)
        end
      end
    end
  end
end