1 files changed, 125 insertions, 0 deletions
diff --git a/src/arrow/c_glib/test/test-field.rb b/src/arrow/c_glib/test/test-field.rb
new file mode 100644
index 000000000..fa341de26
--- /dev/null
+++ b/src/arrow/c_glib/test/test-field.rb
@@ -0,0 +1,125 @@
+# 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 TestField < Test::Unit::TestCase
+  include Helper::Omittable
+
+  def setup
+    @data_type = Arrow::BooleanDataType.new
+    @field = Arrow::Field.new("enabled", @data_type)
+    @field_with_metadata = @field.with_metadata("key1" => "value1",
+                                                "key2" => "value2")
+  end
+
+  def test_export
+    require_gi_bindings(3, 4, 8)
+    c_abi_schema = @field.export
+    assert_equal(@field,
+                 Arrow::Field.import(c_abi_schema))
+  end
+
+  def test_equal
+    assert_equal(Arrow::Field.new("enabled", Arrow::BooleanDataType.new),
+                 Arrow::Field.new("enabled", Arrow::BooleanDataType.new))
+  end
+
+  def test_name
+    assert_equal("enabled", @field.name)
+  end
+
+  def test_data_type
+    assert_equal(@data_type.to_s,
+                 @field.data_type.to_s)
+  end
+
+  def test_nullable?
+    assert do
+      @field.nullable?
+    end
+  end
+
+  def test_to_s
+    assert_equal("enabled: bool", @field_with_metadata.to_s)
+  end
+
+  sub_test_case("#to_string_metadata") do
+    def test_true
+      assert_equal(<<-FIELD.chomp, @field_with_metadata.to_string_metadata(true))
+enabled: bool
+-- metadata --
+key1: value1
+key2: value2
+      FIELD
+    end
+
+    def test_false
+      assert_equal(<<-FIELD.chomp, @field_with_metadata.to_string_metadata(false))
+enabled: bool
+      FIELD
+    end
+  end
+
+  sub_test_case("#has_metadata?") do
+    def test_existent
+      assert do
+        @field_with_metadata.has_metadata?
+      end
+    end
+
+    def test_nonexistent
+      assert do
+        not @field.has_metadata?
+      end
+    end
+  end
+
+  sub_test_case("#metadata") do
+    def test_existent
+      assert_equal({
+                     "key1" => "value1",
+                     "key2" => "value2",
+                   },
+                   @field_with_metadata.metadata)
+    end
+
+    def test_nonexistent
+      assert_nil(@field.metadata)
+    end
+  end
+
+  def test_with_metadata
+    field = @field_with_metadata.with_metadata("key3" => "value3")
+    assert_equal({"key3" => "value3"},
+                 field.metadata)
+  end
+
+  def test_with_merged_metadata
+    field = @field_with_metadata.with_merged_metadata("key1" => "new-value1",
+                                                      "key3" => "value3")
+    assert_equal({
+                   "key1" => "new-value1",
+                   "key2" => "value2",
+                   "key3" => "value3",
+                 },
+                 field.metadata)
+  end
+
+  def test_remove_metadata
+    field = @field_with_metadata.remove_metadata
+    assert_nil(field.metadata)
+  end
+end