1 files changed, 37 insertions, 0 deletions
diff --git a/src/arrow/c_glib/test/test-decimal128-array.rb b/src/arrow/c_glib/test/test-decimal128-array.rb
new file mode 100644
index 000000000..132ceb778
--- /dev/null
+++ b/src/arrow/c_glib/test/test-decimal128-array.rb
@@ -0,0 +1,37 @@
+# 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 TestDecimal128Array < Test::Unit::TestCase
+  def test_format_value
+    data_type = Arrow::Decimal128DataType.new(8, 2)
+    builder = Arrow::Decimal128ArrayBuilder.new(data_type)
+    decimal = Arrow::Decimal128.new("23423445")
+    builder.append_value(decimal)
+    array = builder.finish
+    assert_equal("234234.45", array.format_value(0))
+  end
+
+  def test_value
+    data_type = Arrow::Decimal128DataType.new(8, 2)
+    builder = Arrow::Decimal128ArrayBuilder.new(data_type)
+    decimal = Arrow::Decimal128.new("23423445")
+    builder.append_value(decimal)
+    array = builder.finish
+    assert_equal("234234.45",
+                 array.get_value(0).to_string_scale(array.value_data_type.scale))
+  end
+end