1 files changed, 42 insertions, 0 deletions
diff --git a/src/arrow/ruby/red-arrow/test/test-time64-data-type.rb b/src/arrow/ruby/red-arrow/test/test-time64-data-type.rb
new file mode 100644
index 000000000..a5f341753
--- /dev/null
+++ b/src/arrow/ruby/red-arrow/test/test-time64-data-type.rb
@@ -0,0 +1,42 @@
+# 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 Time64DataTypeTest < Test::Unit::TestCase
+  sub_test_case(".new") do
+    test("Arrow::TimeUnit") do
+      assert_equal("time64[ns]",
+                   Arrow::Time64DataType.new(Arrow::TimeUnit::NANO).to_s)
+    end
+
+    test("Symbol") do
+      assert_equal("time64[ns]",
+                   Arrow::Time64DataType.new(:nano).to_s)
+    end
+
+    test("unit: Arrow::TimeUnit") do
+      data_type = Arrow::Time64DataType.new(unit: Arrow::TimeUnit::NANO)
+      assert_equal("time64[ns]",
+                   data_type.to_s)
+    end
+
+    test("unit: Symbol") do
+      data_type = Arrow::Time64DataType.new(unit: :nano)
+      assert_equal("time64[ns]",
+                   data_type.to_s)
+    end
+  end
+end