1 files changed, 25 insertions, 0 deletions
diff --git a/spec/ruby/core/range/frozen_spec.rb b/spec/ruby/core/range/frozen_spec.rb
new file mode 100644
index 0000000000..8dab5e5339
--- /dev/null
+++ b/spec/ruby/core/range/frozen_spec.rb
@@ -0,0 +1,25 @@
+require_relative '../../spec_helper'
+
+# There is no Range#frozen? method but this feels like the best place for these specs
+describe "Range#frozen?" do
+  it "is true for literal ranges" do
+    (1..2).should.frozen?
+    (1..).should.frozen?
+    (..1).should.frozen?
+  end
+
+  it "is true for Range.new" do
+    Range.new(1, 2).should.frozen?
+    Range.new(1, nil).should.frozen?
+    Range.new(nil, 1).should.frozen?
+  end
+
+  it "is false for instances of a subclass of Range" do
+    sub_range = Class.new(Range).new(1, 2)
+    sub_range.should_not.frozen?
+  end
+
+  it "is false for Range.allocate" do
+    Range.allocate.should_not.frozen?
+  end
+end