1 files changed, 33 insertions, 0 deletions
diff --git a/spec/ruby/core/enumerator/plus_spec.rb b/spec/ruby/core/enumerator/plus_spec.rb
new file mode 100644
index 0000000000..d6c0fa93ac
--- /dev/null
+++ b/spec/ruby/core/enumerator/plus_spec.rb
@@ -0,0 +1,33 @@
+require_relative '../../spec_helper'
+
+describe "Enumerator#+" do
+  before :each do
+    ScratchPad.record []
+  end
+
+  it "returns a chain of self and provided enumerators" do
+    one   = Enumerator.new { |y| y << 1 }
+    two   = Enumerator.new { |y| y << 2 }
+    three = Enumerator.new { |y| y << 3 }
+
+    chain = one + two + three
+
+    chain.should.instance_of?(Enumerator::Chain)
+    chain.each { |item| ScratchPad << item }
+    ScratchPad.recorded.should == [1, 2, 3]
+  end
+
+  it "calls #each on each argument" do
+    enum = Enumerator.new { |y| y << "one" }
+
+    obj1 = mock("obj1")
+    obj1.should_receive(:each).once.and_yield("two")
+
+    obj2 = mock("obj2")
+    obj2.should_receive(:each).once.and_yield("three")
+
+    chain = enum + obj1 + obj2
+    chain.each { |item| ScratchPad << item }
+    ScratchPad.recorded.should == ["one", "two", "three"]
+  end
+end