1 files changed, 102 insertions, 0 deletions
diff --git a/src/arrow/c_glib/test/test-file-input-stream.rb b/src/arrow/c_glib/test/test-file-input-stream.rb
new file mode 100644
index 000000000..2b43f97f5
--- /dev/null
+++ b/src/arrow/c_glib/test/test-file-input-stream.rb
@@ -0,0 +1,102 @@
+# 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 TestFileInputStream < Test::Unit::TestCase
+  def setup
+    @data = "Hello World"
+    @tempfile = Tempfile.open("arrow-file-input-stream")
+    @tempfile.write(@data)
+    @tempfile.close
+  end
+
+  def test_new
+    input = Arrow::FileInputStream.new(@tempfile.path)
+    begin
+      buffer = input.read(5)
+      assert_equal("Hello", buffer.data.to_s)
+    ensure
+      input.close
+    end
+  end
+
+  def test_close
+    input = Arrow::FileInputStream.new(@tempfile.path)
+    assert do
+      not input.closed?
+    end
+    input.close
+    assert do
+      input.closed?
+    end
+  end
+
+  def test_size
+    input = Arrow::FileInputStream.new(@tempfile.path)
+    begin
+      assert_equal(@data.bytesize, input.size)
+    ensure
+      input.close
+    end
+  end
+
+  def test_read
+    input = Arrow::FileInputStream.new(@tempfile.path)
+    begin
+      buffer = input.read(5)
+      assert_equal("Hello", buffer.data.to_s)
+    ensure
+      input.close
+    end
+  end
+
+  def test_read_at
+    input = Arrow::FileInputStream.new(@tempfile.path)
+    begin
+      buffer = input.read_at(6, 5)
+      assert_equal("World", buffer.data.to_s)
+    ensure
+      input.close
+    end
+  end
+
+  def test_mode
+    input = Arrow::FileInputStream.new(@tempfile.path)
+    begin
+      assert_equal(Arrow::FileMode::READ, input.mode)
+    ensure
+      input.close
+    end
+  end
+
+  def test_file_descriptor
+    @tempfile.open
+    begin
+      fd = @tempfile.fileno
+      input = Arrow::FileInputStream.new(fd)
+      begin
+        assert_equal(fd, input.file_descriptor)
+      ensure
+        input.close
+      end
+    ensure
+      begin
+        @tempfile.close
+      rescue
+      end
+    end
+  end
+end