Update to ruby/spec@83063a3

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@62094 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 23 insertions, 0 deletions

diff --git a/spec/ruby/core/integer/to_f_spec.rb b/spec/ruby/core/integer/to_f_spec.rb
new file mode 100644
index 0000000000..5a4ca18128
--- /dev/null
+++ b/spec/ruby/core/integer/to_f_spec.rb
@@ -0,0 +1,23 @@
+require File.expand_path('../../../spec_helper', __FILE__)
+
+describe "Integer#to_f" do
+  context "fixnum" do
+    it "returns self converted to a Float" do
+      0.to_f.should == 0.0
+      -500.to_f.should == -500.0
+      9_641_278.to_f.should == 9641278.0
+    end
+  end
+
+  context "bignum" do
+    it "returns self converted to a Float" do
+      bignum_value(0x4000_0aa0_0bb0_0000).to_f.should eql(13_835_069_737_789_292_544.00)
+      bignum_value(0x8000_0000_0000_0ccc).to_f.should eql(18_446_744_073_709_555_712.00)
+      (-bignum_value(99)).to_f.should eql(-9_223_372_036_854_775_808.00)
+    end
+
+    it "converts number close to Float::MAX without exceeding MAX or producing NaN" do
+      (10**308).to_f.should == 10.0 ** 308
+    end
+  end
+end