* test/ruby: tests for ruby itself.

* test/ruby/test_*.rb: split sample/test.rb into 28 test/unit testcases.  some
  tests could not be translates...  search '!!' mark to see it.

* test/csv/test_csv.rb: should require 'csv', not '../lib/csv'.  test runner
  should set load path correctly.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@4498 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

test/ruby/test_float.rb

@@ -0,0 +1,45 @@
+require 'test/unit'
+
+$KCODE = 'none'
+
+class TestFloat < Test::Unit::TestCase
+  def test_float
+    assert(2.6.floor == 2)
+    assert((-2.6).floor == -3)
+    assert(2.6.ceil == 3)
+    assert((-2.6).ceil == -2)
+    assert(2.6.truncate == 2)
+    assert((-2.6).truncate == -2)
+    assert(2.6.round == 3)
+    assert((-2.4).truncate == -2)
+    assert((13.4 % 1 - 0.4).abs < 0.0001)
+    nan = 0.0/0
+    def nan.test(v)
+      extend Test::Unit::Assertions
+      assert(self != v)
+      assert((self < v) == false)
+      assert((self > v) == false)
+      assert((self <= v) == false)
+      assert((self >= v) == false)
+    end
+    nan.test(nan)
+    nan.test(0)
+    nan.test(1)
+    nan.test(-1)
+    nan.test(1000)
+    nan.test(-1000)
+    nan.test(1_000_000_000_000)
+    nan.test(-1_000_000_000_000)
+    nan.test(100.0);
+    nan.test(-100.0);
+    nan.test(0.001);
+    nan.test(-0.001);
+    nan.test(1.0/0);
+    nan.test(-1.0/0);
+    
+    #s = "3.7517675036461267e+17"
+    #assert(s == sprintf("%.16e", s.to_f))
+    f = 3.7517675036461267e+17
+    assert(f == sprintf("%.16e", f).to_f)
+  end
+end