vendor/rails/activesupport/test/core_ext/float_ext_test.rb

   1 require File.dirname(__FILE__) + '/../abstract_unit'
   2
   3 class FloatExtRoundingTests < Test::Unit::TestCase
   4   def test_round_for_positive_number
   5     assert_equal 1,    1.4.round
   6     assert_equal 2,    1.6.round
   7     assert_equal 2,    1.6.round(0)
   8     assert_equal 1.4,  1.4.round(1)
   9     assert_equal 1.4,  1.4.round(3)
  10     assert_equal 1.5,  1.45.round(1)
  11     assert_equal 1.45, 1.445.round(2)
  12   end
  13
  14   def test_round_for_negative_number
  15     assert_equal( -1,   -1.4.round )
  16     assert_equal( -2,   -1.6.round )
  17     assert_equal( -1.4, -1.4.round(1) )
  18     assert_equal( -1.5, -1.45.round(1) )
  19   end
  20
  21   def test_round_with_negative_precision
  22     assert_equal 123460.0, 123456.0.round(-1)
  23     assert_equal 123500.0, 123456.0.round(-2)
  24   end
  25 end