1 files changed, 39 insertions, 0 deletions
diff --git a/spec/rubyspec/optional/capi/enumerator_spec.rb b/spec/rubyspec/optional/capi/enumerator_spec.rb
new file mode 100644
index 0000000000..44634f73a1
--- /dev/null
+++ b/spec/rubyspec/optional/capi/enumerator_spec.rb
@@ -0,0 +1,39 @@
+require File.expand_path('../spec_helper', __FILE__)
+
+load_extension("enumerator")
+
+describe "C-API Enumerator function" do
+  before :each do
+    @s = CApiEnumeratorSpecs.new
+  end
+
+  describe "rb_enumeratorize" do
+    before do
+      @enumerable = [1, 2, 3]
+    end
+
+    it "constructs a new Enumerator for the given object, method and arguments" do
+      enumerator = @s.rb_enumeratorize(@enumerable, :each, :arg1, :arg2)
+      enumerator.class.should == Enumerator
+    end
+
+    it "enumerates the given object" do
+      enumerator = @s.rb_enumeratorize(@enumerable, :each)
+      enumerated = []
+      enumerator.each { |i| enumerated << i }
+      enumerated.should == @enumerable
+    end
+
+    it "uses the given method for enumeration" do
+      enumerator = @s.rb_enumeratorize(@enumerable, :awesome_each)
+      @enumerable.should_receive(:awesome_each)
+      enumerator.each {}
+    end
+
+    it "passes the given arguments to the enumeration method" do
+      enumerator = @s.rb_enumeratorize(@enumerable, :each, :arg1, :arg2)
+      @enumerable.should_receive(:each).with(:arg1, :arg2)
+      enumerator.each {}
+    end
+  end
+end