diff options
Diffstat (limited to 'spec/ruby/core/module/comparison_spec.rb')
-rw-r--r-- | spec/ruby/core/module/comparison_spec.rb | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/spec/ruby/core/module/comparison_spec.rb b/spec/ruby/core/module/comparison_spec.rb new file mode 100644 index 0000000000..e7608d64b9 --- /dev/null +++ b/spec/ruby/core/module/comparison_spec.rb @@ -0,0 +1,36 @@ +require File.expand_path('../../../spec_helper', __FILE__) +require File.expand_path('../fixtures/classes', __FILE__) + +describe "Module#<=>" do + it "returns -1 if self is a subclass of or includes the given module" do + (ModuleSpecs::Child <=> ModuleSpecs::Parent).should == -1 + (ModuleSpecs::Child <=> ModuleSpecs::Basic).should == -1 + (ModuleSpecs::Child <=> ModuleSpecs::Super).should == -1 + (ModuleSpecs::Super <=> ModuleSpecs::Basic).should == -1 + end + + it "returns 0 if self is the same as the given module" do + (ModuleSpecs::Child <=> ModuleSpecs::Child).should == 0 + (ModuleSpecs::Parent <=> ModuleSpecs::Parent).should == 0 + (ModuleSpecs::Basic <=> ModuleSpecs::Basic).should == 0 + (ModuleSpecs::Super <=> ModuleSpecs::Super).should == 0 + end + + it "returns +1 if self is a superclas of or included by the given module" do + (ModuleSpecs::Parent <=> ModuleSpecs::Child).should == +1 + (ModuleSpecs::Basic <=> ModuleSpecs::Child).should == +1 + (ModuleSpecs::Super <=> ModuleSpecs::Child).should == +1 + (ModuleSpecs::Basic <=> ModuleSpecs::Super).should == +1 + end + + it "returns nil if self and the given module are not related" do + (ModuleSpecs::Parent <=> ModuleSpecs::Basic).should == nil + (ModuleSpecs::Parent <=> ModuleSpecs::Super).should == nil + (ModuleSpecs::Basic <=> ModuleSpecs::Parent).should == nil + (ModuleSpecs::Super <=> ModuleSpecs::Parent).should == nil + end + + it "returns nil if the argument is not a class/module" do + (ModuleSpecs::Parent <=> mock('x')).should == nil + end +end |