1 files changed, 49 insertions, 0 deletions
diff --git a/src/arrow/c_glib/test/test-field-expression.rb b/src/arrow/c_glib/test/test-field-expression.rb
new file mode 100644
index 000000000..cdcfab71e
--- /dev/null
+++ b/src/arrow/c_glib/test/test-field-expression.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 TestFieldExpression < Test::Unit::TestCase
+  def setup
+    @expression = Arrow::FieldExpression.new("visible")
+  end
+
+  sub_test_case("#initialize") do
+    def test_invalid_dot_path
+      message =
+        "[field-expression][new]: Invalid: " +
+        "Dot path '.[' contained an unterminated index"
+      assert_raise(Arrow::Error::Invalid.new(message)) do
+        Arrow::FieldExpression.new(".[")
+      end
+    end
+  end
+
+  sub_test_case("==") do
+    def test_true
+      assert_equal(Arrow::FieldExpression.new("visible"),
+                   Arrow::FieldExpression.new(".visible"))
+    end
+
+    def test_false
+      assert_not_equal(@expression,
+                       Arrow::FieldExpression.new("equal"))
+    end
+  end
+
+  def test_to_string
+    assert_equal("visible", @expression.to_s)
+  end
+end