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require_relative '../../spec_helper'
require_relative 'fixtures/classes'
describe "Hash#keys" do
it "returns an array with the keys in the order they were inserted" do
{}.keys.should == []
{}.keys.should be_kind_of(Array)
Hash.new(5).keys.should == []
Hash.new { 5 }.keys.should == []
{ 1 => 2, 4 => 8, 2 => 4 }.keys.should == [1, 4, 2]
{ 1 => 2, 2 => 4, 4 => 8 }.keys.should be_kind_of(Array)
{ nil => nil }.keys.should == [nil]
end
it "uses the same order as #values" do
h = { 1 => "1", 2 => "2", 3 => "3", 4 => "4" }
h.size.times do |i|
h[h.keys[i]].should == h.values[i]
end
end
end
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