1 files changed, 33 insertions, 0 deletions
diff --git a/src/arrow/c_glib/test/test-null-array.rb b/src/arrow/c_glib/test/test-null-array.rb
new file mode 100644
index 000000000..6aa8c037c
--- /dev/null
+++ b/src/arrow/c_glib/test/test-null-array.rb
@@ -0,0 +1,33 @@
+# 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 TestNullArray < Test::Unit::TestCase
+  def test_length
+    array = Arrow::NullArray.new(3)
+    assert_equal(3, array.length)
+  end
+
+  def test_n_nulls
+    array = Arrow::NullArray.new(3)
+    assert_equal(3, array.n_nulls)
+  end
+
+  def test_slice
+    array = Arrow::NullArray.new(3)
+    assert_equal(2, array.slice(1, 2).length)
+  end
+end