diff options
Diffstat (limited to 'spec/ruby/core/integer/to_f_spec.rb')
| -rw-r--r-- | spec/ruby/core/integer/to_f_spec.rb | 23 |
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 |