merge revision(s) 42178: [Backport #8687]

	* rational.c (f_round_common): Rational is expected to be returned by
	  Rational#*, but mathn.rb breaks that assumption.  [ruby-core:56177]
	  [Bug #8687]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_0_0@42217 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 101 insertions, 1 deletions

diff --git a/test/test_mathn.rb b/test/test_mathn.rb
index 7f2b294bba..b4adf93894 100644
--- a/test/test_mathn.rb
+++ b/test/test_mathn.rb
@@ -5,8 +5,108 @@ require_relative 'ruby/envutil'
 class TestMathn < Test::Unit::TestCase
   def test_power
     assert_in_out_err ['-r', 'mathn', '-e', 'a=1**2;!a'], "", [], [], '[ruby-core:25740]'
-    assert_in_out_err ['-r', 'mathn', '-e', 'a=(1<<126)**2;!a'], "", [], [], '[ruby-core:25740]'
+    assert_in_out_err ['-r', 'mathn', '-e', 'a=(1 << 126)**2;!a'], "", [], [], '[ruby-core:25740]'
     assert_in_out_err ['-r', 'mathn/complex', '-e', 'a=Complex(0,1)**4;!a'], "", [], [], '[ruby-core:44170]'
     assert_in_out_err ['-r', 'mathn/complex', '-e', 'a=Complex(0,1)**5;!a'], "", [], [], '[ruby-core:44170]'
   end
+
+  def test_floor
+    assert_separately(%w[-rmathn], <<-EOS)
+      assert_equal( 2, ( 13/5).floor)
+      assert_equal( 2, (  5/2).floor)
+      assert_equal( 2, ( 12/5).floor)
+      assert_equal(-3, (-12/5).floor)
+      assert_equal(-3, ( -5/2).floor)
+      assert_equal(-3, (-13/5).floor)
+
+      assert_equal( 2, ( 13/5).floor(0))
+      assert_equal( 2, (  5/2).floor(0))
+      assert_equal( 2, ( 12/5).floor(0))
+      assert_equal(-3, (-12/5).floor(0))
+      assert_equal(-3, ( -5/2).floor(0))
+      assert_equal(-3, (-13/5).floor(0))
+
+      assert_equal(( 13/5), ( 13/5).floor(2))
+      assert_equal((  5/2), (  5/2).floor(2))
+      assert_equal(( 12/5), ( 12/5).floor(2))
+      assert_equal((-12/5), (-12/5).floor(2))
+      assert_equal(( -5/2), ( -5/2).floor(2))
+      assert_equal((-13/5), (-13/5).floor(2))
+    EOS
+  end
+
+  def test_ceil
+    assert_separately(%w[-rmathn], <<-EOS)
+      assert_equal( 3, ( 13/5).ceil)
+      assert_equal( 3, (  5/2).ceil)
+      assert_equal( 3, ( 12/5).ceil)
+      assert_equal(-2, (-12/5).ceil)
+      assert_equal(-2, ( -5/2).ceil)
+      assert_equal(-2, (-13/5).ceil)
+
+      assert_equal( 3, ( 13/5).ceil(0))
+      assert_equal( 3, (  5/2).ceil(0))
+      assert_equal( 3, ( 12/5).ceil(0))
+      assert_equal(-2, (-12/5).ceil(0))
+      assert_equal(-2, ( -5/2).ceil(0))
+      assert_equal(-2, (-13/5).ceil(0))
+
+      assert_equal(( 13/5), ( 13/5).ceil(2))
+      assert_equal((  5/2), (  5/2).ceil(2))
+      assert_equal(( 12/5), ( 12/5).ceil(2))
+      assert_equal((-12/5), (-12/5).ceil(2))
+      assert_equal(( -5/2), ( -5/2).ceil(2))
+      assert_equal((-13/5), (-13/5).ceil(2))
+    EOS
+  end
+
+  def test_truncate
+    assert_separately(%w[-rmathn], <<-EOS)
+      assert_equal( 2, ( 13/5).truncate)
+      assert_equal( 2, (  5/2).truncate)
+      assert_equal( 2, ( 12/5).truncate)
+      assert_equal(-2, (-12/5).truncate)
+      assert_equal(-2, ( -5/2).truncate)
+      assert_equal(-2, (-13/5).truncate)
+
+      assert_equal( 2, ( 13/5).truncate(0))
+      assert_equal( 2, (  5/2).truncate(0))
+      assert_equal( 2, ( 12/5).truncate(0))
+      assert_equal(-2, (-12/5).truncate(0))
+      assert_equal(-2, ( -5/2).truncate(0))
+      assert_equal(-2, (-13/5).truncate(0))
+
+      assert_equal(( 13/5), ( 13/5).truncate(2))
+      assert_equal((  5/2), (  5/2).truncate(2))
+      assert_equal(( 12/5), ( 12/5).truncate(2))
+      assert_equal((-12/5), (-12/5).truncate(2))
+      assert_equal(( -5/2), ( -5/2).truncate(2))
+      assert_equal((-13/5), (-13/5).truncate(2))
+    EOS
+  end
+
+  def test_round
+    assert_separately(%w[-rmathn], <<-EOS)
+      assert_equal( 3, ( 13/5).round)
+      assert_equal( 3, (  5/2).round)
+      assert_equal( 2, ( 12/5).round)
+      assert_equal(-2, (-12/5).round)
+      assert_equal(-3, ( -5/2).round)
+      assert_equal(-3, (-13/5).round)
+
+      assert_equal( 3, ( 13/5).round(0))
+      assert_equal( 3, (  5/2).round(0))
+      assert_equal( 2, ( 12/5).round(0))
+      assert_equal(-2, (-12/5).round(0))
+      assert_equal(-3, ( -5/2).round(0))
+      assert_equal(-3, (-13/5).round(0))
+
+      assert_equal(( 13/5), ( 13/5).round(2))
+      assert_equal((  5/2), (  5/2).round(2))
+      assert_equal(( 12/5), ( 12/5).round(2))
+      assert_equal((-12/5), (-12/5).round(2))
+      assert_equal(( -5/2), ( -5/2).round(2))
+      assert_equal((-13/5), (-13/5).round(2))
+    EOS
+  end
 end