1 files changed, 46 insertions, 0 deletions
diff --git a/spec/ruby/core/method/unbind_spec.rb b/spec/ruby/core/method/unbind_spec.rb
new file mode 100644
index 0000000000..0b630e4d88
--- /dev/null
+++ b/spec/ruby/core/method/unbind_spec.rb
@@ -0,0 +1,46 @@
+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
+
+describe "Method#unbind" do
+  before :each do
+    @normal = MethodSpecs::Methods.new
+    @normal_m = @normal.method :foo
+    @normal_um = @normal_m.unbind
+    @pop_um = MethodSpecs::MySub.new.method(:bar).unbind
+    @string = @pop_um.inspect.sub(/0x\w+/, '0xXXXXXX')
+  end
+
+  it "returns an UnboundMethod" do
+    @normal_um.should be_kind_of(UnboundMethod)
+  end
+
+  describe "#inspect" do
+    it "returns a String containing 'UnboundMethod'" do
+      @string.should =~ /\bUnboundMethod\b/
+    end
+
+    it "returns a String containing the method name" do
+      @string.should =~ /\#bar/
+    end
+
+    it "returns a String containing the Module the method is defined in" do
+      @string.should =~ /MethodSpecs::MyMod/
+    end
+
+    it "returns a String containing the Module the method is referenced from" do
+      @string.should =~ /MethodSpecs::MyMod/
+    end
+  end
+
+  it "keeps the origin singleton class if there is one" do
+    obj = Object.new
+    def obj.foo
+    end
+    obj.method(:foo).unbind.inspect.should.start_with?("#<UnboundMethod: #{obj.singleton_class}#foo")
+  end
+
+  specify "rebinding UnboundMethod to Method's obj produces exactly equivalent Methods" do
+    @normal_um.bind(@normal).should == @normal_m
+    @normal_m.should == @normal_um.bind(@normal)
+  end
+end