1 files changed, 45 insertions, 0 deletions
diff --git a/src/arrow/ruby/red-arrow/test/test-timestamp-array.rb b/src/arrow/ruby/red-arrow/test/test-timestamp-array.rb
new file mode 100644
index 000000000..248a2531e
--- /dev/null
+++ b/src/arrow/ruby/red-arrow/test/test-timestamp-array.rb
@@ -0,0 +1,45 @@
+# 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 TimestampArrayTest < Test::Unit::TestCase
+  test("#[]") do
+    sec = 1513267750
+    usec = 914509
+    array = Arrow::TimestampArray.new(:micro, [sec * (10 ** 6) + usec])
+    time = Time.at(sec, usec)
+    assert_equal(time, array[0])
+  end
+
+  sub_test_case("#is_in") do
+    def setup
+      values = [
+        Time.parse("2019-11-18T00:09:11"),
+        Time.parse("2019-11-18T00:09:12"),
+        Time.parse("2019-11-18T00:09:13"),
+      ]
+      @array = Arrow::TimestampArray.new(:micro, values)
+    end
+
+    test("Arrow: Array") do
+      right = [
+        Time.parse("2019-11-18T00:09:12"),
+      ]
+      assert_equal(Arrow::BooleanArray.new([false, true, false]),
+                   @array.is_in(right))
+    end
+  end
+end