Add logdevio tests

test/test_log.rb

@@ -602,3 +602,60 @@ def test_terminate
     plugin.terminate
   end
 end
+
+class LogDeviceIOTest < Test::Unit::TestCase
+  TMP_DIR = File.expand_path(File.dirname(__FILE__) + "/tmp/logdeviceio/#{ENV['TEST_ENV_NUMBER']}")
+
+  def setup
+    FileUtils.rm_rf(TMP_DIR)
+    FileUtils.mkdir_p(TMP_DIR)
+  end
+
+  test 'rotate_age' do
+    logdev = Fluent::LogDeviceIO.new(TMP_DIR + '/rotate_age', shift_age: 2)
+    assert_equal 2, logdev.rotate_age
+    assert_equal 1048576, logdev.rotate_size
+  end
+
+  test 'rotate_size' do
+    logdev = Fluent::LogDeviceIO.new(TMP_DIR + '/rotate_size', shift_size: 100)
+    assert_equal 7, logdev.rotate_age
+    assert_equal 100, logdev.rotate_size
+  end
+
+  test 'flush' do
+    io = StringIO.new
+    logdev = Fluent::LogDeviceIO.new(io)
+    assert_equal io, logdev.flush
+
+    io.instance_eval { undef :flush }
+    logdev = Fluent::LogDeviceIO.new(io)
+    assert_raise NoMethodError do
+      logdev.flush
+    end
+  end
+
+  test 'tty?' do
+    io = StringIO.new
+    logdev = Fluent::LogDeviceIO.new(io)
+    assert_equal io.tty?, logdev.tty?
+
+    io.instance_eval { undef :tty? }
+    logdev = Fluent::LogDeviceIO.new(io)
+    assert_raise NoMethodError do
+      logdev.tty?
+    end
+  end
+
+  test 'sync=' do
+    io = StringIO.new
+    logdev = Fluent::LogDeviceIO.new(io)
+    assert_true logdev.sync = true
+
+    io.instance_eval { undef :sync= }
+    logdev = Fluent::LogDeviceIO.new(io)
+    assert_raise NoMethodError do
+      logdev.sync = true
+    end
+  end
+end