Add FixedSizeListArray Ruby glue

When testing ListSliceOptions I noticed that some glue were missing from the Ruby code.

Author: stenlarsson

ruby/red-arrow/lib/arrow/fixed-size-list-array-builder.rb

@@ -0,0 +1,29 @@
+# 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.
+
+module Arrow
+  class FixedSizeListArrayBuilder
+    class << self
+      def build(data_type, values)
+        builder = new(data_type)
+        builder.build(values)
+      end
+    end
+
+    prepend ListValuesAppendable
+  end
+end

ruby/red-arrow/lib/arrow/libraries.rb

@@ -69,6 +69,7 @@
 require_relative "file-system"
 require_relative "fixed-size-binary-array"
 require_relative "fixed-size-binary-array-builder"
+require_relative "fixed-size-list-array-builder"
 require_relative "function"
 require_relative "group"
 require_relative "half-float"

ruby/red-arrow/test/test-fixed-size-list-array.rb

@@ -0,0 +1,31 @@
+# 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 FixedSizeListArrayTest < Test::Unit::TestCase
+  sub_test_case(".new") do
+    test("build") do
+      data_type = [:fixed_size_list, :int8, 2]
+      values = [
+        [1, 2],
+        [3, 4],
+        nil,
+      ]
+      array = Arrow::FixedSizeListArray.new(data_type, values)
+      assert_equal(values, array.map { |v| v&.to_a })
+    end
+  end
+end