1 files changed, 41 insertions, 0 deletions
diff --git a/spec/ruby/core/kernel/singleton_method_spec.rb b/spec/ruby/core/kernel/singleton_method_spec.rb
new file mode 100644
index 0000000000..77022b40c2
--- /dev/null
+++ b/spec/ruby/core/kernel/singleton_method_spec.rb
@@ -0,0 +1,41 @@
+require File.expand_path('../../../spec_helper', __FILE__)
+
+describe "Kernel#singleton_method" do
+  it "find a method defined on the singleton class" do
+    obj = Object.new
+    def obj.foo; end
+    obj.singleton_method(:foo).should be_an_instance_of(Method)
+  end
+
+  it "returns a Method which can be called" do
+    obj = Object.new
+    def obj.foo; 42; end
+    obj.singleton_method(:foo).call.should == 42
+  end
+
+  it "only looks at singleton methods and not at methods in the class" do
+    klass = Class.new do
+      def foo
+        42
+      end
+    end
+    obj = klass.new
+    obj.foo.should == 42
+    -> {
+      obj.singleton_method(:foo)
+    }.should raise_error(NameError) { |e|
+      # a NameError and not a NoMethodError
+      e.class.should == NameError
+    }
+  end
+
+  it "raises a NameError if there is no such method" do
+    obj = Object.new
+    -> {
+      obj.singleton_method(:not_existing)
+    }.should raise_error(NameError) { |e|
+      # a NameError and not a NoMethodError
+      e.class.should == NameError
+    }
+  end
+end