require_relative '../../spec_helper'
require_relative 'fixtures/classes'
require_relative 'shared/iteration'
require_relative '../enumerable/shared/enumeratorized'

describe "Hash#each_key" do
  it "calls block once for each key, passing key" do
    r = {}
    h = { 1 => -1, 2 => -2, 3 => -3, 4 => -4 }
    h.each_key { |k| r[k] = k }.should equal(h)
    r.should == { 1 => 1, 2 => 2, 3 => 3, 4 => 4 }
  end

  it "processes keys in the same order as keys()" do
    keys = []
    h = { 1 => -1, 2 => -2, 3 => -3, 4 => -4 }
    h.each_key { |k| keys << k }
    keys.should == h.keys
  end

  it_behaves_like :hash_iteration_no_block, :each_key
  it_behaves_like :enumeratorized_with_origin_size, :each_key, { 1 => 2, 3 => 4, 5 => 6 }
end