1 files changed, 83 insertions, 0 deletions
diff --git a/src/arrow/ruby/red-arrow/test/test-data-type.rb b/src/arrow/ruby/red-arrow/test/test-data-type.rb
new file mode 100644
index 000000000..f54831780
--- /dev/null
+++ b/src/arrow/ruby/red-arrow/test/test-data-type.rb
@@ -0,0 +1,83 @@
+# 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 DataTypeTest < Test::Unit::TestCase
+  sub_test_case(".resolve") do
+    test("DataType") do
+      assert_equal(Arrow::BooleanDataType.new,
+                   Arrow::DataType.resolve(Arrow::BooleanDataType.new))
+    end
+
+    test("String") do
+      assert_equal(Arrow::BooleanDataType.new,
+                   Arrow::DataType.resolve("boolean"))
+    end
+
+    test("Symbol") do
+      assert_equal(Arrow::BooleanDataType.new,
+                   Arrow::DataType.resolve(:boolean))
+    end
+
+    test("Array") do
+      field = Arrow::Field.new(:visible, :boolean)
+      assert_equal(Arrow::ListDataType.new(field),
+                   Arrow::DataType.resolve([:list, field]))
+    end
+
+    test("Hash") do
+      field = Arrow::Field.new(:visible, :boolean)
+      assert_equal(Arrow::ListDataType.new(field),
+                   Arrow::DataType.resolve(type: :list, field: field))
+    end
+
+    test("_") do
+      assert_equal(Arrow::FixedSizeBinaryDataType.new(10),
+                   Arrow::DataType.resolve([:fixed_size_binary, 10]))
+    end
+
+    test("abstract") do
+      message =
+        "abstract type: <:floating_point>: " +
+        "use one of not abstract type: [" +
+        "Arrow::DoubleDataType, " +
+        "Arrow::FloatDataType]"
+      assert_raise(ArgumentError.new(message)) do
+        Arrow::DataType.resolve(:floating_point)
+      end
+    end
+  end
+
+  sub_test_case("instance methods") do
+    def setup
+      @data_type = Arrow::StringDataType.new
+    end
+
+    sub_test_case("#==") do
+      test("Arrow::DataType") do
+        assert do
+          @data_type == @data_type
+        end
+      end
+
+      test("not Arrow::DataType") do
+        assert do
+          not (@data_type == 29)
+        end
+      end
+    end
+  end
+end