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Diffstat (limited to 'spec/ruby/core/string/sum_spec.rb')
-rw-r--r-- | spec/ruby/core/string/sum_spec.rb | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/spec/ruby/core/string/sum_spec.rb b/spec/ruby/core/string/sum_spec.rb new file mode 100644 index 0000000000..2d68668f49 --- /dev/null +++ b/spec/ruby/core/string/sum_spec.rb @@ -0,0 +1,22 @@ +require File.expand_path('../../../spec_helper', __FILE__) +require File.expand_path('../fixtures/classes.rb', __FILE__) + +describe "String#sum" do + it "returns a basic n-bit checksum of the characters in self" do + "ruby".sum.should == 450 + "ruby".sum(8).should == 194 + "rubinius".sum(23).should == 881 + end + + it "tries to convert n to an integer using to_int" do + obj = mock('8') + obj.should_receive(:to_int).and_return(8) + + "hello".sum(obj).should == "hello".sum(8) + end + + it "returns sum of the bytes in self if n less or equal to zero" do + "xyz".sum(0).should == 363 + "xyz".sum(-10).should == 363 + end +end |