diff options
Diffstat (limited to 'spec/ruby/core/kernel/comparison_spec.rb')
-rw-r--r-- | spec/ruby/core/kernel/comparison_spec.rb | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/spec/ruby/core/kernel/comparison_spec.rb b/spec/ruby/core/kernel/comparison_spec.rb new file mode 100644 index 0000000000..2aa4358600 --- /dev/null +++ b/spec/ruby/core/kernel/comparison_spec.rb @@ -0,0 +1,31 @@ +require File.expand_path('../../../spec_helper', __FILE__) + +describe "Kernel#<=>" do + it "returns 0 if self" do + obj = Object.new + obj.<=>(obj).should == 0 + end + + it "returns 0 if self is == to the argument" do + obj = mock('has ==') + obj.should_receive(:==).and_return(true) + obj.<=>(Object.new).should == 0 + end + + it "returns nil if self is eql? but not == to the argument" do + obj = mock('has eql?') + obj.should_not_receive(:eql?) + obj.<=>(Object.new).should be_nil + end + + it "returns nil if self.==(arg) returns nil" do + obj = mock('wrong ==') + obj.should_receive(:==).and_return(nil) + obj.<=>(Object.new).should be_nil + end + + it "returns nil if self is not == to the argument" do + obj = Object.new + obj.<=>(3.14).should be_nil + end +end |