diff options
Diffstat (limited to 'spec/ruby/library/bigdecimal/sub_spec.rb')
| -rw-r--r-- | spec/ruby/library/bigdecimal/sub_spec.rb | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/spec/ruby/library/bigdecimal/sub_spec.rb b/spec/ruby/library/bigdecimal/sub_spec.rb index 7f0305a1c6..f0068b12a9 100644 --- a/spec/ruby/library/bigdecimal/sub_spec.rb +++ b/spec/ruby/library/bigdecimal/sub_spec.rb @@ -13,6 +13,8 @@ describe "BigDecimal#sub" do @one_minus = BigDecimal("-1") @frac_1 = BigDecimal("1E-99999") @frac_2 = BigDecimal("0.9E-99999") + @frac_3 = BigDecimal("12345E10") + @frac_4 = BigDecimal("98765E10") end it "returns a - b with given precision" do @@ -32,6 +34,14 @@ describe "BigDecimal#sub" do @frac_1.sub(@frac_1, 1000000).should == @zero end + describe "with Object" do + it "tries to coerce the other operand to self" do + object = mock("Object") + object.should_receive(:coerce).with(@frac_3).and_return([@frac_3, @frac_4]) + @frac_3.sub(object, 1).should == BigDecimal("-0.9E15") + end + end + it "returns NaN if NaN is involved" do @one.sub(@nan, 1).nan?.should == true @nan.sub(@one, 1).nan?.should == true |