1 files changed, 39 insertions, 0 deletions
diff --git a/spec/ruby/library/delegate/delegator/frozen_spec.rb b/spec/ruby/library/delegate/delegator/frozen_spec.rb
new file mode 100644
index 0000000000..1fb561a349
--- /dev/null
+++ b/spec/ruby/library/delegate/delegator/frozen_spec.rb
@@ -0,0 +1,39 @@
+require File.expand_path('../../../../spec_helper', __FILE__)
+require File.expand_path('../../fixtures/classes', __FILE__)
+
+describe "Delegator when frozen" do
+  before :all do
+    @array = [42, :hello]
+    @delegate = DelegateSpecs::Delegator.new(@array)
+    @delegate.freeze
+  end
+
+  it "is still readable" do
+    @delegate.should == [42, :hello]
+    @delegate.include?("bar").should be_false
+  end
+
+  it "is frozen" do
+    @delegate.frozen?.should be_true
+  end
+
+  it "is not writeable" do
+    lambda{ @delegate[0] += 2 }.should raise_error( RuntimeError )
+  end
+
+  it "creates a frozen clone" do
+    @delegate.clone.frozen?.should be_true
+  end
+
+  it "creates an unfrozen dup" do
+    @delegate.dup.frozen?.should be_false
+  end
+
+  it "causes mutative calls to raise RuntimeError" do
+    lambda{ @delegate.__setobj__("hola!") }.should raise_error( RuntimeError )
+  end
+
+  it "returns false if only the delegated object is frozen" do
+    DelegateSpecs::Delegator.new([1,2,3].freeze).frozen?.should be_false
+  end
+end