1 files changed, 91 insertions, 0 deletions
diff --git a/src/arrow/ruby/red-arrow/test/test-field.rb b/src/arrow/ruby/red-arrow/test/test-field.rb
new file mode 100644
index 000000000..1b6bc4b17
--- /dev/null
+++ b/src/arrow/ruby/red-arrow/test/test-field.rb
@@ -0,0 +1,91 @@
+# 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 FieldTest < Test::Unit::TestCase
+  sub_test_case(".new") do
+    test("String, Arrow::DataType") do
+      assert_equal("visible: bool",
+                   Arrow::Field.new("visible", Arrow::BooleanDataType.new).to_s)
+    end
+
+    test("Symbol, Arrow::DataType") do
+      assert_equal("visible: bool",
+                   Arrow::Field.new(:visible, Arrow::BooleanDataType.new).to_s)
+    end
+
+    test("String, Symbol") do
+      assert_equal("visible: bool",
+                   Arrow::Field.new(:visible, :boolean).to_s)
+    end
+
+    test("String, Hash") do
+      assert_equal("visible: bool",
+                   Arrow::Field.new(:visible, type: :boolean).to_s)
+    end
+
+    test("description: String") do
+      assert_equal("visible: bool",
+                   Arrow::Field.new(name: "visible",
+                                    data_type: :boolean).to_s)
+    end
+
+    test("description: Symbol") do
+      assert_equal("visible: bool",
+                   Arrow::Field.new(name: :visible,
+                                    data_type: :boolean).to_s)
+    end
+
+    test("description: shortcut") do
+      assert_equal("visible: bool",
+                   Arrow::Field.new(name: :visible,
+                                    type: :boolean).to_s)
+    end
+
+    test("Hash: shortcut: additional") do
+      description = {
+        name: :tags,
+        type: :list,
+        field: {
+          name: "tag",
+          type: :string,
+        },
+      }
+      assert_equal("tags: list<tag: string>",
+                   Arrow::Field.new(description).to_s)
+    end
+  end
+
+  sub_test_case("instance methods") do
+    def setup
+      @field = Arrow::Field.new("count", :uint32)
+    end
+
+    sub_test_case("#==") do
+      test("Arrow::Field") do
+        assert do
+          @field == @field
+        end
+      end
+
+      test("not Arrow::Field") do
+        assert do
+          not (@field == 29)
+        end
+      end
+    end
+  end
+end