1 files changed, 67 insertions, 0 deletions
diff --git a/spec/ruby/language/private_spec.rb b/spec/ruby/language/private_spec.rb
new file mode 100644
index 0000000000..94b56fee5b
--- /dev/null
+++ b/spec/ruby/language/private_spec.rb
@@ -0,0 +1,67 @@
+require_relative '../spec_helper'
+require_relative 'fixtures/private'
+
+describe "The private keyword" do
+  it "marks following methods as being private" do
+    a = Private::A.new
+    a.methods.should_not.include?(:bar)
+    -> { a.bar }.should.raise(NoMethodError)
+
+    b = Private::B.new
+    b.methods.should_not.include?(:bar)
+    -> { b.bar }.should.raise(NoMethodError)
+  end
+
+  # def expr.meth() methods are always public
+  it "has no effect on def expr.meth() methods" do
+    Private::B.public_defs_method.should == 0
+  end
+
+  it "is overridden when a new class is opened" do
+    c = Private::B::C.new
+    c.methods.should.include?(:baz)
+    c.baz
+    Private::B.public_class_method1.should == 1
+    -> { Private::B.private_class_method1 }.should.raise(NoMethodError)
+  end
+
+  it "is no longer in effect when the class is closed" do
+    b = Private::B.new
+    b.methods.should.include?(:foo)
+    b.foo
+  end
+
+  it "changes visibility of previously called method" do
+    klass = Class.new do
+      def foo
+        "foo"
+      end
+    end
+    f = klass.new
+    f.foo
+    klass.class_eval do
+      private :foo
+    end
+    -> { f.foo }.should.raise(NoMethodError)
+  end
+
+  it "changes visibility of previously called methods with same send/call site" do
+    g = ::Private::G.new
+    -> {
+      2.times do
+        g.foo
+        module ::Private
+          class G
+            private :foo
+          end
+        end
+      end
+    }.should.raise(NoMethodError)
+  end
+
+  it "changes the visibility of the existing method in the subclass" do
+    ::Private::A.new.foo.should == 'foo'
+    -> { ::Private::H.new.foo }.should.raise(NoMethodError)
+    ::Private::H.new.send(:foo).should == 'foo'
+  end
+end