1 files changed, 54 insertions, 0 deletions
diff --git a/spec/ruby/core/module/private_instance_methods_spec.rb b/spec/ruby/core/module/private_instance_methods_spec.rb
new file mode 100644
index 0000000000..f5c4c3a0f9
--- /dev/null
+++ b/spec/ruby/core/module/private_instance_methods_spec.rb
@@ -0,0 +1,54 @@
+require File.expand_path('../../../spec_helper', __FILE__)
+require File.expand_path('../fixtures/classes', __FILE__)
+require File.expand_path('../../../fixtures/reflection', __FILE__)
+
+# TODO: rewrite
+describe "Module#private_instance_methods" do
+  it "returns a list of private methods in module and its ancestors" do
+    ModuleSpecs::CountsMixin.should have_private_instance_method(:private_3)
+
+    ModuleSpecs::CountsParent.should have_private_instance_method(:private_2)
+    ModuleSpecs::CountsParent.should have_private_instance_method(:private_3)
+
+    ModuleSpecs::CountsChild.should have_private_instance_method(:private_1)
+    ModuleSpecs::CountsChild.should have_private_instance_method(:private_2)
+    ModuleSpecs::CountsChild.should have_private_instance_method(:private_3)
+  end
+
+  it "when passed false as a parameter, should return only methods defined in that module" do
+    ModuleSpecs::CountsMixin.should have_private_instance_method(:private_3, false)
+    ModuleSpecs::CountsParent.should have_private_instance_method(:private_2, false)
+    ModuleSpecs::CountsChild.should have_private_instance_method(:private_1, false)
+  end
+
+  it "default list should be the same as passing true as an argument" do
+    ModuleSpecs::CountsMixin.private_instance_methods(true).should ==
+      ModuleSpecs::CountsMixin.private_instance_methods
+    ModuleSpecs::CountsParent.private_instance_methods(true).should ==
+      ModuleSpecs::CountsParent.private_instance_methods
+    ModuleSpecs::CountsChild.private_instance_methods(true).should ==
+      ModuleSpecs::CountsChild.private_instance_methods
+  end
+end
+
+describe :module_private_instance_methods_supers, shared: true do
+  it "returns a unique list for a class including a module" do
+    m = ReflectSpecs::D.private_instance_methods(*@object)
+    m.select { |x| x == :pri }.sort.should == [:pri]
+  end
+
+  it "returns a unique list for a subclass" do
+    m = ReflectSpecs::E.private_instance_methods(*@object)
+    m.select { |x| x == :pri }.sort.should == [:pri]
+  end
+end
+
+describe "Module#private_instance_methods" do
+  describe "when not passed an argument" do
+    it_behaves_like :module_private_instance_methods_supers, nil, []
+  end
+
+  describe "when passed true" do
+    it_behaves_like :module_private_instance_methods_supers, nil, true
+  end
+end