1 files changed, 16 insertions, 0 deletions
diff --git a/spec/ruby/core/array/frozen_spec.rb b/spec/ruby/core/array/frozen_spec.rb
new file mode 100644
index 0000000000..3ba54be46b
--- /dev/null
+++ b/spec/ruby/core/array/frozen_spec.rb
@@ -0,0 +1,16 @@
+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
+
+describe "Array#frozen?" do
+  it "returns true if array is frozen" do
+    a = [1, 2, 3]
+    a.should_not.frozen?
+    a.freeze
+    a.should.frozen?
+  end
+
+  it "returns false for an array being sorted by #sort" do
+    a = [1, 2, 3]
+    a.sort { |x,y| a.should_not.frozen?; x <=> y }
+  end
+end