1 files changed, 39 insertions, 0 deletions
diff --git a/spec/ruby/shared/enumerator/rewind.rb b/spec/ruby/shared/enumerator/rewind.rb
new file mode 100644
index 0000000000..4d4139204c
--- /dev/null
+++ b/spec/ruby/shared/enumerator/rewind.rb
@@ -0,0 +1,39 @@
+require File.expand_path('../../../spec_helper', __FILE__)
+
+describe :enum_rewind, shared: true do
+
+  before :each do
+    @enum = 1.upto(3)
+  end
+
+  it "resets the enumerator to its initial state" do
+    @enum.next.should == 1
+    @enum.next.should == 2
+    @enum.rewind
+    @enum.next.should == 1
+  end
+
+  it "returns self" do
+    @enum.rewind.should == @enum
+  end
+
+  it "has no effect on a new enumerator" do
+    @enum.rewind
+    @enum.next.should == 1
+  end
+
+  it "has no effect if called multiple, consecutive times" do
+    @enum.next.should == 1
+    @enum.rewind
+    @enum.rewind
+    @enum.next.should == 1
+  end
+
+  it "works with peek to reset the position" do
+    @enum.next
+    @enum.next
+    @enum.rewind
+    @enum.next
+    @enum.peek.should == 2
+  end
+end