1 files changed, 41 insertions, 0 deletions
diff --git a/src/arrow/ruby/red-arrow/test/test-dictionary-array.rb b/src/arrow/ruby/red-arrow/test/test-dictionary-array.rb
new file mode 100644
index 000000000..83368e9ec
--- /dev/null
+++ b/src/arrow/ruby/red-arrow/test/test-dictionary-array.rb
@@ -0,0 +1,41 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+
+class DictionaryArrayTest < Test::Unit::TestCase
+  sub_test_case("instance methods") do
+    def setup
+      @values = ["a", "b", "c", "b", "a"]
+      @string_array = Arrow::StringArray.new(@values)
+      @array = @string_array.dictionary_encode
+    end
+
+    test("#[]") do
+      assert_equal(@values, @array.to_a)
+    end
+
+    test("#get_value") do
+      assert_equal([
+                     @values[0],
+                     @values[3],
+                   ],
+                   [
+                     @array.get_value(0),
+                     @array.get_value(3),
+                   ])
+    end
+  end
+end