1 files changed, 49 insertions, 0 deletions
diff --git a/src/arrow/ruby/red-gandiva/test/test-projector.rb b/src/arrow/ruby/red-gandiva/test/test-projector.rb
new file mode 100644
index 000000000..d618b248a
--- /dev/null
+++ b/src/arrow/ruby/red-gandiva/test/test-projector.rb
@@ -0,0 +1,49 @@
+# 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 TestProjector < Test::Unit::TestCase
+  def test_evaluate
+    table = Arrow::Table.new(:field1 => Arrow::Int32Array.new([1, 13, 3, 17]),
+                             :field2 => Arrow::Int32Array.new([11, 2, 15, 17]),
+                             :field3 => Arrow::Int32Array.new([1, 10, 2, 2]))
+    schema = table.schema
+
+    expression1 = schema.build_expression do |record|
+      record.field1 + record.field2
+    end
+
+    expression2 = schema.build_expression do |record, context|
+      context.if(record.field1 > record.field2)
+        .then(record.field1 + record.field2 * record.field3)
+        .elsif(record.field1 == record.field2)
+        .then(record.field1 - record.field2 / record.field3)
+        .else(record.field2)
+    end
+
+    projector = Gandiva::Projector.new(schema,
+                                       [expression1, expression2])
+
+    table.each_record_batch do |record_batch|
+      outputs = projector.evaluate(record_batch)
+      assert_equal([
+                     [12, 15, 18, 34],
+                     [11, 33, 15, 9]
+                   ],
+                   outputs.collect(&:values))
+    end
+  end
+end