1 files changed, 92 insertions, 0 deletions
diff --git a/src/arrow/ruby/red-arrow/test/test-column.rb b/src/arrow/ruby/red-arrow/test/test-column.rb
new file mode 100644
index 000000000..613b01ccc
--- /dev/null
+++ b/src/arrow/ruby/red-arrow/test/test-column.rb
@@ -0,0 +1,92 @@
+# 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 ColumnTest < Test::Unit::TestCase
+  def setup
+    table = Arrow::Table.new("visible" => [true, nil, false])
+    @column = table.visible
+  end
+
+  test("#name") do
+    assert_equal("visible", @column.name)
+  end
+
+  test("#data_type") do
+    assert_equal(Arrow::BooleanDataType.new, @column.data_type)
+  end
+
+  test("#null?") do
+    assert do
+      @column.null?(1)
+    end
+  end
+
+  test("#valid?") do
+    assert do
+      @column.valid?(0)
+    end
+  end
+
+  test("#each") do
+    assert_equal([true, nil, false], @column.each.to_a)
+  end
+
+  test("#reverse_each") do
+    assert_equal([false, nil, true], @column.reverse_each.to_a)
+  end
+
+  test("#n_rows") do
+    assert_equal(3, @column.n_rows)
+  end
+
+  test("#n_nulls") do
+    assert_equal(1, @column.n_nulls)
+  end
+
+  sub_test_case("#==") do
+    test("same value") do
+      table1 = Arrow::Table.new("visible" => [true, false])
+      table2 = Arrow::Table.new("visible" => [true, false])
+      assert do
+        table1.visible == table2.visible
+      end
+    end
+
+    test("different name") do
+      table1 = Arrow::Table.new("visible" => [true, false])
+      table2 = Arrow::Table.new("invisible" => [true, false])
+      assert do
+        not table1.visible == table2.invisible
+      end
+    end
+
+    test("different value") do
+      table1 = Arrow::Table.new("visible" => [true, false])
+      table2 = Arrow::Table.new("visible" => [true, true])
+      assert do
+        not table1.visible == table2.visible
+      end
+    end
+
+    test("not Arrow::Column") do
+      table = Arrow::Table.new("visible" => [true, false])
+      assert do
+        not table.visible == 29
+      end
+    end
+  end
+end