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author | Jean Boussier <jean.boussier@gmail.com> | 2021-10-28 14:07:11 +0200 |
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committer | Jean Boussier <jean.boussier@gmail.com> | 2021-11-23 10:50:44 +0100 |
commit | c0c2b31a35e19a47b499b57807bc0a0f9325f6d3 (patch) | |
tree | ab7ee0710597903b43a8d086a3805059693de928 /spec/ruby/core/class | |
parent | a88b19d3d08447eeb7045621f02a844173d64203 (diff) |
Add Class#subclasses
Implements [Feature #18273]
Returns an array containing the receiver's direct subclasses without
singleton classes.
Notes
Notes:
Merged: https://github.com/ruby/ruby/pull/5045
Diffstat (limited to 'spec/ruby/core/class')
-rw-r--r-- | spec/ruby/core/class/subclasses_spec.rb | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/spec/ruby/core/class/subclasses_spec.rb b/spec/ruby/core/class/subclasses_spec.rb new file mode 100644 index 0000000000..ddbcfb02c0 --- /dev/null +++ b/spec/ruby/core/class/subclasses_spec.rb @@ -0,0 +1,38 @@ +require_relative '../../spec_helper' +require_relative '../module/fixtures/classes' + +ruby_version_is '3.1' do + describe "Class#subclasses" do + it "returns a list of classes directly inheriting from self" do + assert_subclasses(ModuleSpecs::Parent, [ModuleSpecs::Child, ModuleSpecs::Child2]) + end + + it "does not return included modules" do + parent = Class.new + child = Class.new(parent) + mod = Module.new + parent.include(mod) + + assert_subclasses(parent, [child]) + end + + it "does not return singleton classes" do + a = Class.new + + a_obj = a.new + def a_obj.force_singleton_class + 42 + end + + a.subclasses.should_not include(a_obj.singleton_class) + end + + it "has 1 entry per module or class" do + ModuleSpecs::Parent.subclasses.should == ModuleSpecs::Parent.subclasses.uniq + end + + def assert_subclasses(mod,subclasses) + mod.subclasses.sort_by(&:inspect).should == subclasses.sort_by(&:inspect) + end + end +end |