require_relative '../../spec_helper'

describe "Thread#thread_variables" do
  before :each do
    @t = Thread.new { }
  end

  after :each do
    @t.join
  end

  it "returns the keys of all the values set" do
    @t.thread_variable_set(:a, 2)
    @t.thread_variable_set(:b, 4)
    @t.thread_variable_set(:c, 6)
    @t.thread_variables.sort.should == [:a, :b, :c]
  end

  it "returns the keys private to self" do
    @t.thread_variable_set(:a, 82)
    @t.thread_variable_set(:b, 82)
    Thread.current.thread_variables.should_not include(:a, :b)
  end

  it "only contains user thread variables and is empty initially" do
    Thread.current.thread_variables.should == []
    @t.thread_variables.should == []
  end

  it "returns keys as Symbols" do
    key = mock('key')
    key.should_receive(:to_str).and_return('a')

    @t.thread_variable_set(key, 49)
    @t.thread_variable_set('b', 50)
    @t.thread_variable_set(:c, 51)
    @t.thread_variables.sort.should == [:a, :b, :c]
  end
end