diff options
Diffstat (limited to 'spec/ruby/core/fixnum/multiply_spec.rb')
-rw-r--r-- | spec/ruby/core/fixnum/multiply_spec.rb | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/spec/ruby/core/fixnum/multiply_spec.rb b/spec/ruby/core/fixnum/multiply_spec.rb new file mode 100644 index 0000000000..2eabd7b632 --- /dev/null +++ b/spec/ruby/core/fixnum/multiply_spec.rb @@ -0,0 +1,27 @@ +require File.expand_path('../../../spec_helper', __FILE__) + +describe "Fixnum#*" do + it "returns self multiplied by the given Integer" do + (4923 * 2).should == 9846 + (1342177 * 800).should == 1073741600 + (65536 * 65536).should == 4294967296 + + (256 * bignum_value).should == 2361183241434822606848 + (6712 * 0.25).should == 1678.0 + end + + it "raises a TypeError when given a non-Integer" do + lambda { + (obj = mock('10')).should_receive(:to_int).any_number_of_times.and_return(10) + 13 * obj + }.should raise_error(TypeError) + lambda { 13 * "10" }.should raise_error(TypeError) + lambda { 13 * :symbol }.should raise_error(TypeError) + end + + it "overflows to Bignum when the result does not fit in Fixnum" do + (fixnum_max * fixnum_max).should be_kind_of(Bignum) + (fixnum_max * fixnum_min).should be_kind_of(Bignum) + end + +end |