1 files changed, 63 insertions, 0 deletions
diff --git a/spec/ruby/core/module/instance_methods_spec.rb b/spec/ruby/core/module/instance_methods_spec.rb
new file mode 100644
index 0000000000..dbb6df8c34
--- /dev/null
+++ b/spec/ruby/core/module/instance_methods_spec.rb
@@ -0,0 +1,63 @@
+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
+
+describe "Module#instance_methods" do
+  it "does not return methods undefined in a superclass" do
+    methods = ModuleSpecs::Parent.instance_methods(false)
+    methods.should_not.include?(:undefed_method)
+  end
+
+  it "only includes module methods on an included module" do
+    methods = ModuleSpecs::Basic.instance_methods(false)
+    methods.should.include?(:public_module)
+    # Child is an including class
+    methods = ModuleSpecs::Child.instance_methods(false)
+    methods.should.include?(:public_child)
+    methods.should_not.include?(:public_module)
+  end
+
+  it "does not return methods undefined in a subclass" do
+    methods = ModuleSpecs::Grandchild.instance_methods
+    methods.should_not.include?(:parent_method)
+    methods.should_not.include?(:another_parent_method)
+  end
+
+  it "does not return methods undefined in the current class" do
+    class ModuleSpecs::Child
+      def undefed_child
+      end
+    end
+    ModuleSpecs::Child.send(:undef_method, :undefed_child)
+    methods = ModuleSpecs::Child.instance_methods
+    methods.should_not.include?(:undefed_method)
+    methods.should_not.include?(:undefed_child)
+  end
+
+  it "does not return methods from an included module that are undefined in the class" do
+    ModuleSpecs::Grandchild.instance_methods.should_not.include?(:super_included_method)
+  end
+
+  it "returns the public and protected methods of self if include_super is false" do
+    methods = ModuleSpecs::Parent.instance_methods(false)
+    methods.to_set.should >= Set[:protected_parent, :public_parent]
+
+    methods = ModuleSpecs::Child.instance_methods(false)
+    methods.to_set.should >= Set[:protected_child, :public_child]
+  end
+
+  it "returns the public and protected methods of self and it's ancestors" do
+    methods = ModuleSpecs::Basic.instance_methods
+    methods.to_set.should >= Set[:protected_module, :public_module]
+
+    methods = ModuleSpecs::Super.instance_methods
+    methods.to_set.should >= Set[:protected_module, :protected_super_module,
+                                 :public_module, :public_super_module]
+  end
+
+  it "makes a private Object instance method public in Kernel" do
+    methods = Kernel.instance_methods
+    methods.should.include?(:module_specs_private_method_on_object_for_kernel_public)
+    methods = Object.instance_methods
+    methods.should_not.include?(:module_specs_private_method_on_object_for_kernel_public)
+  end
+end