1 files changed, 12 insertions, 2 deletions
diff --git a/ruby/tests/basic.rb b/ruby/tests/basic.rb
index 1c3fb62c..307374e3 100644
--- a/ruby/tests/basic.rb
+++ b/ruby/tests/basic.rb
@@ -377,6 +377,18 @@ module BasicTest
       end
     end
 
+    def test_rptfield_array_ducktyping
+      l = Google::Protobuf::RepeatedField.new(:int32)
+      length_methods = %w(count length size)
+      length_methods.each do |lm|
+        assert l.send(lm)  == 0
+      end
+      l.push 4
+      length_methods.each do |lm|
+        assert l.send(lm)  == 1
+      end
+    end
+
     def test_map_basic
       # allowed key types:
       # :int32, :int64, :uint32, :uint64, :bool, :string, :bytes.
@@ -827,7 +839,6 @@ module BasicTest
       assert m['a.b'] == 4
     end
 
-
     def test_int_ranges
       m = TestMessage.new
 
@@ -933,7 +944,6 @@ module BasicTest
       assert_raise RangeError do
         m.optional_uint64 = 1.5
       end
-
     end
 
     def test_stress_test