require 'test/unit'
require File.dirname(__FILE__) + '/../lib/misc'

class MiscTest < Test::Unit::TestCase
  def test_silence_warnings
    silence_warnings { assert_nil $VERBOSE }
    assert_equal 1234, silence_warnings { 1234 }
  end

  def test_silence_warnings_verbose_invariant
    old_verbose = $VERBOSE
    begin
      silence_warnings { raise }
      flunk
    rescue
      assert_equal old_verbose, $VERBOSE
    end
  end
end

class HashOptionsTest < Test::Unit::TestCase
  def setup
    @strings = { 'a' => 1, 'b' => 2 }
    @symbols = { :a  => 1, :b  => 2 }
    @mixed   = { :a  => 1, 'b' => 2 }
  end

  def test_methods
    h = {}
    assert_respond_to h, :symbolize_keys
    assert_respond_to h, :symbolize_keys!
    assert_respond_to h, :to_options
    assert_respond_to h, :to_options!
  end

  def test_symbolize_keys
    assert_equal @symbols, @symbols.symbolize_keys
    assert_equal @symbols, @strings.symbolize_keys
    assert_equal @symbols, @mixed.symbolize_keys

    assert_raises(NoMethodError) { { [] => 1 }.symbolize_keys }
  end

  def test_symbolize_keys!
    assert_equal @symbols, @symbols.dup.symbolize_keys!
    assert_equal @symbols, @strings.dup.symbolize_keys!
    assert_equal @symbols, @mixed.dup.symbolize_keys!

    assert_raises(NoMethodError) { { [] => 1 }.symbolize_keys! }
  end
end