1 files changed, 69 insertions, 0 deletions
diff --git a/src/arrow/c_glib/test/parquet/test-arrow-file-reader.rb b/src/arrow/c_glib/test/parquet/test-arrow-file-reader.rb
new file mode 100644
index 000000000..45eb33596
--- /dev/null
+++ b/src/arrow/c_glib/test/parquet/test-arrow-file-reader.rb
@@ -0,0 +1,69 @@
+# 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 TestParquetArrowFileReader < Test::Unit::TestCase
+  include Helper::Buildable
+
+  def setup
+    omit("Parquet is required") unless defined?(::Parquet)
+    @file = Tempfile.open(["data", ".parquet"])
+    @a_array = build_string_array(["foo", "bar"])
+    @b_array = build_int32_array([123, 456])
+    @table = build_table("a" => @a_array,
+                         "b" => @b_array)
+    writer = Parquet::ArrowFileWriter.new(@table.schema, @file.path)
+    chunk_size = 1
+    writer.write_table(@table, chunk_size)
+    writer.close
+    @reader = Parquet::ArrowFileReader.new(@file.path)
+  end
+
+  def test_schema
+    assert_equal(<<-SCHEMA.chomp, @reader.schema.to_s)
+a: string
+b: int32
+    SCHEMA
+  end
+
+  sub_test_case("#read_row_group") do
+    test("with column indices") do
+      assert_equal(build_table("b" => @b_array.slice(0, 1)),
+                   @reader.read_row_group(0, [-1]))
+    end
+
+    test("without column indices") do
+      assert_equal(build_table("a" => @a_array.slice(1, 1),
+                               "b" => @b_array.slice(1, 1)),
+                   @reader.read_row_group(1))
+    end
+  end
+
+  def test_read_column
+    assert_equal([
+                   Arrow::ChunkedArray.new([@a_array]),
+                   Arrow::ChunkedArray.new([@b_array]),
+                 ],
+                 [
+                   @reader.read_column_data(0),
+                   @reader.read_column_data(-1),
+                 ])
+  end
+
+  def test_n_rows
+    assert_equal(2, @reader.n_rows)
+  end
+end