1 files changed, 42 insertions, 0 deletions
diff --git a/spec/ruby/shared/enumerator/new.rb b/spec/ruby/shared/enumerator/new.rb
new file mode 100644
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+++ b/spec/ruby/shared/enumerator/new.rb
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+require File.expand_path('../../../spec_helper', __FILE__)
+
+describe :enum_new, shared: true do
+  it "creates a new custom enumerator with the given object, iterator and arguments" do
+    enum = Enumerator.new(1, :upto, 3)
+    enum.should be_an_instance_of(Enumerator)
+  end
+
+  it "creates a new custom enumerator that responds to #each" do
+    enum = Enumerator.new(1, :upto, 3)
+    enum.respond_to?(:each).should == true
+  end
+
+  it "creates a new custom enumerator that runs correctly" do
+    Enumerator.new(1, :upto, 3).map{|x|x}.should == [1,2,3]
+  end
+
+  it "aliases the second argument to :each" do
+    Enumerator.new(1..2).to_a.should == Enumerator.new(1..2, :each).to_a
+  end
+
+  it "doesn't check for the presence of the iterator method" do
+    Enumerator.new(nil).should be_an_instance_of(Enumerator)
+  end
+
+  it "uses the latest define iterator method" do
+    class StrangeEach
+      def each
+        yield :foo
+      end
+    end
+    enum = Enumerator.new(StrangeEach.new)
+    enum.to_a.should == [:foo]
+    class StrangeEach
+      def each
+        yield :bar
+      end
+    end
+    enum.to_a.should == [:bar]
+  end
+
+end