kylefang/RubyMotion
1
0
Fork 0
mirror of https://github.com/zhigang1992/RubyMotion.git synced 2026-06-19 01:56:33 +08:00
Code Issues Packages Projects Releases Wiki Activity
Files
f27d56f00a403724fd00a15cd8b56e5adf528b60
RubyMotion/test/TestBigDecimal/spec/rubyspec/round_spec.rb
Watson 5851bbcac4 add test suite for BigDecimal
2014-06-13 23:34:37 +09:00

195 lines
8.3 KiB
Ruby
Raw Blame History

# require File.expand_path('../../../spec_helper', __FILE__)
# require 'bigdecimal'
describe "BigDecimal#round" do
before do
@one = BigDecimal("1")
@two = BigDecimal("2")
@three = BigDecimal("3")
@neg_one = BigDecimal("-1")
@neg_two = BigDecimal("-2")
@neg_three = BigDecimal("-3")
@p1_50 = BigDecimal("1.50")
@p1_51 = BigDecimal("1.51")
@p1_49 = BigDecimal("1.49")
@n1_50 = BigDecimal("-1.50")
@n1_51 = BigDecimal("-1.51")
@n1_49 = BigDecimal("-1.49")
@p2_50 = BigDecimal("2.50")
@p2_51 = BigDecimal("2.51")
@p2_49 = BigDecimal("2.49")
@n2_50 = BigDecimal("-2.50")
@n2_51 = BigDecimal("-2.51")
@n2_49 = BigDecimal("-2.49")
end
# after :each do
# BigDecimal.mode(BigDecimal::ROUND_MODE, BigDecimal::ROUND_HALF_UP)
# end
it "uses default rounding method unless given" do
@p1_50.round(0).should == @two
@p1_51.round(0).should == @two
@p1_49.round(0).should == @one
@n1_50.round(0).should == @neg_two
@n1_51.round(0).should == @neg_two
@n1_49.round(0).should == @neg_one
@p2_50.round(0).should == @three
@p2_51.round(0).should == @three
@p2_49.round(0).should == @two
@n2_50.round(0).should == @neg_three
@n2_51.round(0).should == @neg_three
@n2_49.round(0).should == @neg_two
# BigDecimal.mode(BigDecimal::ROUND_MODE, BigDecimal::ROUND_DOWN)
# @p1_50.round(0).should == @one
# @p1_51.round(0).should == @one
# @p1_49.round(0).should == @one
# @n1_50.round(0).should == @neg_one
# @n1_51.round(0).should == @neg_one
# @n1_49.round(0).should == @neg_one
# @p2_50.round(0).should == @two
# @p2_51.round(0).should == @two
# @p2_49.round(0).should == @two
# @n2_50.round(0).should == @neg_two
# @n2_51.round(0).should == @neg_two
# @n2_49.round(0).should == @neg_two
end
describe "BigDecimal::ROUND_UP" do
it "rounds values away from zero" do
@p1_50.round(0, BigDecimal::ROUND_UP).should == @two
@p1_51.round(0, BigDecimal::ROUND_UP).should == @two
@p1_49.round(0, BigDecimal::ROUND_UP).should == @two
# @n1_50.round(0, BigDecimal::ROUND_UP).should == @neg_two
# @n1_51.round(0, BigDecimal::ROUND_UP).should == @neg_two
# @n1_49.round(0, BigDecimal::ROUND_UP).should == @neg_two
@p2_50.round(0, BigDecimal::ROUND_UP).should == @three
@p2_51.round(0, BigDecimal::ROUND_UP).should == @three
@p2_49.round(0, BigDecimal::ROUND_UP).should == @three
# @n2_50.round(0, BigDecimal::ROUND_UP).should == @neg_three
# @n2_51.round(0, BigDecimal::ROUND_UP).should == @neg_three
# @n2_49.round(0, BigDecimal::ROUND_UP).should == @neg_three
end
end
describe "BigDecimal::ROUND_DOWN" do
it "rounds values towards zero" do
@p1_50.round(0, BigDecimal::ROUND_DOWN).should == @one
@p1_51.round(0, BigDecimal::ROUND_DOWN).should == @one
@p1_49.round(0, BigDecimal::ROUND_DOWN).should == @one
# @n1_50.round(0, BigDecimal::ROUND_DOWN).should == @neg_one
# @n1_51.round(0, BigDecimal::ROUND_DOWN).should == @neg_one
# @n1_49.round(0, BigDecimal::ROUND_DOWN).should == @neg_one
@p2_50.round(0, BigDecimal::ROUND_DOWN).should == @two
@p2_51.round(0, BigDecimal::ROUND_DOWN).should == @two
@p2_49.round(0, BigDecimal::ROUND_DOWN).should == @two
# @n2_50.round(0, BigDecimal::ROUND_DOWN).should == @neg_two
# @n2_51.round(0, BigDecimal::ROUND_DOWN).should == @neg_two
# @n2_49.round(0, BigDecimal::ROUND_DOWN).should == @neg_two
end
end
describe "BigDecimal::ROUND_HALF_UP" do
it "rounds values >= 5 up, otherwise down" do
@p1_50.round(0, BigDecimal::ROUND_HALF_UP).should == @two
@p1_51.round(0, BigDecimal::ROUND_HALF_UP).should == @two
@p1_49.round(0, BigDecimal::ROUND_HALF_UP).should == @one
# @n1_50.round(0, BigDecimal::ROUND_HALF_UP).should == @neg_two
# @n1_51.round(0, BigDecimal::ROUND_HALF_UP).should == @neg_two
# @n1_49.round(0, BigDecimal::ROUND_HALF_UP).should == @neg_one
@p2_50.round(0, BigDecimal::ROUND_HALF_UP).should == @three
@p2_51.round(0, BigDecimal::ROUND_HALF_UP).should == @three
@p2_49.round(0, BigDecimal::ROUND_HALF_UP).should == @two
# @n2_50.round(0, BigDecimal::ROUND_HALF_UP).should == @neg_three
# @n2_51.round(0, BigDecimal::ROUND_HALF_UP).should == @neg_three
# @n2_49.round(0, BigDecimal::ROUND_HALF_UP).should == @neg_two
end
end
# ruby_bug "redmine:3803/4567", "1.9.2" do
# describe "BigDecimal::ROUND_HALF_DOWN" do
# it "rounds values > 5 up, otherwise down" do
# @p1_50.round(0, BigDecimal::ROUND_HALF_DOWN).should == @one
# @p1_51.round(0, BigDecimal::ROUND_HALF_DOWN).should == @two
# @p1_49.round(0, BigDecimal::ROUND_HALF_DOWN).should == @one
# @n1_50.round(0, BigDecimal::ROUND_HALF_DOWN).should == @neg_one
# @n1_51.round(0, BigDecimal::ROUND_HALF_DOWN).should == @neg_two
# @n1_49.round(0, BigDecimal::ROUND_HALF_DOWN).should == @neg_one
# @p2_50.round(0, BigDecimal::ROUND_HALF_DOWN).should == @two
# @p2_51.round(0, BigDecimal::ROUND_HALF_DOWN).should == @three
# @p2_49.round(0, BigDecimal::ROUND_HALF_DOWN).should == @two
# @n2_50.round(0, BigDecimal::ROUND_HALF_DOWN).should == @neg_two
# @n2_51.round(0, BigDecimal::ROUND_HALF_DOWN).should == @neg_three
# @n2_49.round(0, BigDecimal::ROUND_HALF_DOWN).should == @neg_two
# end
# end
# end
# describe "BigDecimal::ROUND_CEILING" do
# it "rounds values towards +infinity" do
# @p1_50.round(0, BigDecimal::ROUND_CEILING).should == @two
# @p1_51.round(0, BigDecimal::ROUND_CEILING).should == @two
# @p1_49.round(0, BigDecimal::ROUND_CEILING).should == @two
# @n1_50.round(0, BigDecimal::ROUND_CEILING).should == @neg_one
# @n1_51.round(0, BigDecimal::ROUND_CEILING).should == @neg_one
# @n1_49.round(0, BigDecimal::ROUND_CEILING).should == @neg_one
# @p2_50.round(0, BigDecimal::ROUND_CEILING).should == @three
# @p2_51.round(0, BigDecimal::ROUND_CEILING).should == @three
# @p2_49.round(0, BigDecimal::ROUND_CEILING).should == @three
# @n2_50.round(0, BigDecimal::ROUND_CEILING).should == @neg_two
# @n2_51.round(0, BigDecimal::ROUND_CEILING).should == @neg_two
# @n2_49.round(0, BigDecimal::ROUND_CEILING).should == @neg_two
# end
# end
# describe "BigDecimal::ROUND_FLOOR" do
# it "rounds values towards -infinity" do
# @p1_50.round(0, BigDecimal::ROUND_FLOOR).should == @one
# @p1_51.round(0, BigDecimal::ROUND_FLOOR).should == @one
# @p1_49.round(0, BigDecimal::ROUND_FLOOR).should == @one
# @n1_50.round(0, BigDecimal::ROUND_FLOOR).should == @neg_two
# @n1_51.round(0, BigDecimal::ROUND_FLOOR).should == @neg_two
# @n1_49.round(0, BigDecimal::ROUND_FLOOR).should == @neg_two
# @p2_50.round(0, BigDecimal::ROUND_FLOOR).should == @two
# @p2_51.round(0, BigDecimal::ROUND_FLOOR).should == @two
# @p2_49.round(0, BigDecimal::ROUND_FLOOR).should == @two
# @n2_50.round(0, BigDecimal::ROUND_FLOOR).should == @neg_three
# @n2_51.round(0, BigDecimal::ROUND_FLOOR).should == @neg_three
# @n2_49.round(0, BigDecimal::ROUND_FLOOR).should == @neg_three
# end
# end
# ruby_bug "redmine:3803/4567", "1.9.2" do
# describe "BigDecimal::ROUND_HALF_EVEN" do
# it "rounds values > 5 up, < 5 down and == 5 towards even neighbor" do
# @p1_50.round(0, BigDecimal::ROUND_HALF_EVEN).should == @two
# @p1_51.round(0, BigDecimal::ROUND_HALF_EVEN).should == @two
# @p1_49.round(0, BigDecimal::ROUND_HALF_EVEN).should == @one
# @n1_50.round(0, BigDecimal::ROUND_HALF_EVEN).should == @neg_two
# @n1_51.round(0, BigDecimal::ROUND_HALF_EVEN).should == @neg_two
# @n1_49.round(0, BigDecimal::ROUND_HALF_EVEN).should == @neg_one
# @p2_50.round(0, BigDecimal::ROUND_HALF_EVEN).should == @two
# @p2_51.round(0, BigDecimal::ROUND_HALF_EVEN).should == @three
# @p2_49.round(0, BigDecimal::ROUND_HALF_EVEN).should == @two
# @n2_50.round(0, BigDecimal::ROUND_HALF_EVEN).should == @neg_two
# @n2_51.round(0, BigDecimal::ROUND_HALF_EVEN).should == @neg_three
# @n2_49.round(0, BigDecimal::ROUND_HALF_EVEN).should == @neg_two
# end
# end
# end
end
Reference in New Issue View Git Blame Copy Permalink