1 files changed, 15 insertions, 0 deletions
diff --git a/spec/ruby/core/hash/shift_spec.rb b/spec/ruby/core/hash/shift_spec.rb
index 9421a77537..8cf3f4025a 100644
--- a/spec/ruby/core/hash/shift_spec.rb
+++ b/spec/ruby/core/hash/shift_spec.rb
@@ -61,4 +61,19 @@ describe "Hash#shift" do
     lambda { HashSpecs.frozen_hash.shift  }.should raise_error(frozen_error_class)
     lambda { HashSpecs.empty_frozen_hash.shift }.should raise_error(frozen_error_class)
   end
+
+  it "works when the hash is at capacity" do
+    # We try a wide range of sizes in hopes that this will cover all implementationss base Hash size.
+    results = []
+    1.upto(100) do |n|
+      h = {}
+      n.times do |i|
+        h[i] = i
+      end
+      h.shift
+      results << h.size
+    end
+
+    results.should == 0.upto(99).to_a
+  end
 end