diff --git a/test/io/console/test_io_console.rb b/test/io/console/test_io_console.rb
new file mode 100644
index 0000000000..2e46176616
--- /dev/null
+++ b/test/io/console/test_io_console.rb
@@ -0,0 +1,73 @@
+require 'io/console'
+require 'pty'
+require 'test/unit'
+
+class TestIO_Console < Test::Unit::TestCase
+  def test_raw
+    PTY.open {|m, s|
+      s.print "abc\n"
+      assert_equal("abc\r\n", m.gets)
+      s.raw {
+        s.print "def\n"
+        assert_equal("def\n", m.gets)
+      }
+      s.print "ghi\n"
+      assert_equal("ghi\r\n", m.gets)
+    }
+  end
+
+  def test_noecho
+    PTY.open {|m, s|
+      assert(s.echo?)
+      m.print "a\n"
+      s.print "b\n"
+      assert_equal("a\r\nb\r\n", m.readpartial(10))
+      assert_equal("a\n", s.readpartial(10))
+      s.noecho {
+        assert(!s.echo?)
+        m.print "a\n"
+        s.print "b\n"
+        assert_equal("b\r\n", m.readpartial(10))
+        assert_equal("a\n", s.readpartial(10))
+      }
+      assert(s.echo?)
+      m.print "a\n"
+      s.print "b\n"
+      assert_equal("a\r\nb\r\n", m.readpartial(10))
+      assert_equal("a\n", s.readpartial(10))
+    }
+  end
+
+  def test_setecho
+    PTY.open {|m, s|
+      assert(s.echo?)
+      m.print "a\n"
+      s.print "b\n"
+      assert_equal("a\r\nb\r\n", m.readpartial(10))
+      assert_equal("a\n", s.readpartial(10))
+      s.echo = false
+      assert(!s.echo?)
+      m.print "a\n"
+      s.print "b\n"
+      assert_equal("b\r\n", m.readpartial(10))
+      assert_equal("a\n", s.readpartial(10))
+      s.echo = true
+      assert(s.echo?)
+      m.print "a\n"
+      s.print "b\n"
+      assert_equal("a\r\nb\r\n", m.readpartial(10))
+      assert_equal("a\n", s.readpartial(10))
+    }
+  end
+
+  def test_iflush
+    PTY.open {|m, s|
+      m.print "a\n"
+      s.iflush
+      m.print "b\n"
+      assert_equal("a\r\nb\r\n", m.readpartial(10))
+      assert_equal("b\n", s.readpartial(10))
+    }
+  end
+
+end