1 files changed, 31 insertions, 2 deletions
diff --git a/spec/ruby/core/unboundmethod/to_s_spec.rb b/spec/ruby/core/unboundmethod/to_s_spec.rb
index a508229b49..b90f315c3a 100644
--- a/spec/ruby/core/unboundmethod/to_s_spec.rb
+++ b/spec/ruby/core/unboundmethod/to_s_spec.rb
@@ -1,7 +1,36 @@
 require_relative '../../spec_helper'
 require_relative 'fixtures/classes'
-require_relative 'shared/to_s'
+require_relative '../method/shared/aliased_inspect'
 
 describe "UnboundMethod#to_s" do
-  it_behaves_like :unboundmethod_to_s, :to_s
+  it_behaves_like :method_to_s_aliased, :to_s, -> meth { meth.unbind }
+
+  before :each do
+    @from_module = UnboundMethodSpecs::Methods.instance_method(:from_mod)
+    @from_method = UnboundMethodSpecs::Methods.new.method(:from_mod).unbind
+  end
+
+  it "returns a String" do
+    @from_module.to_s.should.is_a?(String)
+    @from_method.to_s.should.is_a?(String)
+  end
+
+  it "the String reflects that this is an UnboundMethod object" do
+    @from_module.to_s.should =~ /\bUnboundMethod\b/
+    @from_method.to_s.should =~ /\bUnboundMethod\b/
+  end
+
+  it "the String shows the method name, Module defined in and Module extracted from" do
+    @from_module.to_s.should =~ /\bfrom_mod\b/
+    @from_module.to_s.should =~ /\bUnboundMethodSpecs::Mod\b/
+  end
+
+  it "returns a String including all details" do
+    @from_module.to_s.should.start_with? "#<UnboundMethod: UnboundMethodSpecs::Mod#from_mod"
+    @from_method.to_s.should.start_with? "#<UnboundMethod: UnboundMethodSpecs::Mod#from_mod"
+  end
+
+  it "does not show the defining module if it is the same as the origin" do
+    UnboundMethodSpecs::A.instance_method(:baz).to_s.should.start_with? "#<UnboundMethod: UnboundMethodSpecs::A#baz"
+  end
 end