1 files changed, 28 insertions, 0 deletions
diff --git a/spec/rubyspec/shared/enumerator/next.rb b/spec/rubyspec/shared/enumerator/next.rb
new file mode 100644
index 0000000000..d8ae6d9673
--- /dev/null
+++ b/spec/rubyspec/shared/enumerator/next.rb
@@ -0,0 +1,28 @@
+require File.expand_path('../../../spec_helper', __FILE__)
+
+describe :enum_next, shared: true do
+
+  before :each do
+    @enum = 1.upto(3)
+  end
+
+  it "returns the next element of the enumeration" do
+    @enum.next.should == 1
+    @enum.next.should == 2
+    @enum.next.should == 3
+  end
+
+  it "raises a StopIteration exception at the end of the stream" do
+    3.times { @enum.next }
+    lambda { @enum.next }.should raise_error(StopIteration)
+  end
+
+  it "cannot be called again until the enumerator is rewound" do
+    3.times { @enum.next }
+    lambda { @enum.next }.should raise_error(StopIteration)
+    lambda { @enum.next }.should raise_error(StopIteration)
+    lambda { @enum.next }.should raise_error(StopIteration)
+    @enum.rewind
+    @enum.next.should == 1
+  end
+end