Added test framework, ported from Quantum

* Added test result format for Jenkins
* Added some test code for ryu/ofproto/

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>

19 files changed, 848 insertions, 10 deletions

diff --git a/.gitignore b/.gitignore
index 5f59de4e..3f0231b8 100644
--- a/.gitignore
+++ b/.gitignore
@@ -8,4 +8,9 @@ GTAGS
 GRTAGS
 GPATH
 GSYMS
-pylint.log
+*.log
+.venv/
+.coverage
+covhtml/
+coverage.xml
+nosetests.xml
diff --git a/pylintrc b/.pylintrc
index fb718e95..177512f8 100644
--- a/pylintrc
+++ b/.pylintrc
@@ -3,3 +3,6 @@
 # W0511: TODOs in code comments are fine.
 # W0142: *args and **kwargs are fine.
 disable=C0111,W0511,W0142
+output-format=parseable
+reports=yes
+files-output=no
diff --git a/pylint.sh b/pylint.sh
deleted file mode 100755
index 7d03a767..00000000
--- a/pylint.sh
+++ /dev/null
@@ -1,9 +0,0 @@
-#! /bin/sh
-
-echo "Running pylint ..."
-PYLINT_OPTIONS="--rcfile=pylintrc --output-format=parseable"
-PYLINT_INCLUDE="ryu bin/ryu-manager bin/ryu-client"
-export PYTHONPATH=$PYTHONPATH:.ryu
-PYLINT_LOG=pylint.log
-
-pylint $PYLINT_OPTIONS $PYLINT_INCLUDE > $PYLINT_LOG
diff --git a/run_tests.sh b/run_tests.sh
new file mode 100755
index 00000000..ee56f975
--- /dev/null
+++ b/run_tests.sh
@@ -0,0 +1,172 @@
+#!/bin/bash
+
+function usage {
+  echo "Usage: $0 [OPTION]..."
+  echo "Run Ryu's test suite(s)"
+  echo ""
+  echo "  -V, --virtual-env        Always use virtualenv.  Install automatically if not present"
+  echo "  -N, --no-virtual-env     Don't use virtualenv.  Run tests in local environment"
+  echo "  -c, --coverage           Generate coverage report"
+  echo "  -f, --force              Force a clean re-build of the virtual environment. Useful when dependencies have been added."
+  echo "  -p, --pep8               Just run pep8"
+  echo "  -P, --no-pep8            Don't run pep8"
+  echo "  -l, --pylint             Just run pylint"
+  echo "  -v, --verbose            Run verbose pylint analysis"
+  echo "  -h, --help               Print this usage message"
+  echo ""
+  echo "Note: with no options specified, the script will try to run the tests in a virtual environment,"
+  echo "      If no virtualenv is found, the script will ask if you would like to create one.  If you "
+  echo "      prefer to run tests NOT in a virtual environment, simply pass the -N option."
+  exit
+}
+
+function process_option {
+  case "$1" in
+    -h|--help) usage;;
+    -V|--virtual-env) let always_venv=1; let never_venv=0;;
+    -N|--no-virtual-env) let always_venv=0; let never_venv=1;;
+    -f|--force) let force=1;;
+    -p|--pep8) let just_pep8=1;let never_venv=1; let always_venv=0;;
+    -P|--no-pep8) no_pep8=1;;
+    -l|--pylint) let just_pylint=1; let never_venv=1; let always_venv=0;;
+    -c|--coverage) coverage=1;;
+    -v|--verbose) verbose=1;;
+    -*) noseopts="$noseopts $1";;
+    *) noseargs="$noseargs $1"
+  esac
+}
+
+venv=.venv
+with_venv=tools/with_venv.sh
+always_venv=0
+never_venv=0
+just_pep8=0
+no_pep8=0
+just_pylint=0
+force=0
+noseargs=
+wrapper=""
+coverage=0
+verbose=0
+
+for arg in "$@"; do
+  process_option $arg
+done
+
+# If enabled, tell nose to collect coverage data
+if [ $coverage -eq 1 ]; then
+    noseopts="$noseopts --with-coverage --cover-package=ryu"
+fi
+
+function run_tests {
+  # Just run the test suites in current environment
+  ${wrapper} rm -f ./$PLUGIN_DIR/tests.sqlite
+
+  if [ $verbose -eq 1 ]; then
+    ${wrapper} $NOSETESTS
+  else
+    ${wrapper} $NOSETESTS 2> run_tests.log
+  fi
+  # If we get some short import error right away, print the error log directly
+  RESULT=$?
+  if [ "$RESULT" -ne "0" ];
+  then
+    ERRSIZE=`wc -l run_tests.log | awk '{print \$1}'`
+    if [ $verbose -eq 0 -a "$ERRSIZE" -lt "40" ];
+    then
+        cat run_tests.log
+    fi
+  fi
+  return $RESULT
+}
+
+function run_pylint {
+  echo "Running pylint ..."
+  PYLINT_OPTIONS="--rcfile=.pylintrc --output-format=parseable"
+  PYLINT_INCLUDE="ryu bin/ryu-manager bin/ryu-client"
+  export PYTHONPATH=$PYTHONPATH:.ryu
+  PYLINT_LOG=pylint.log
+
+  pylint $PYLINT_OPTIONS $PYLINT_INCLUDE > $PYLINT_LOG
+  #BASE_CMD="pylint $PYLINT_OPTIONS $PYLINT_INCLUDE > $PYLINT_LOG"
+  #[ $verbose -eq 1 ] && $BASE_CMD || msg_count=`$BASE_CMD | grep 'ryu/' | wc -l`
+  #if [ $verbose -eq 0 ]; then
+  #  echo "Pylint messages count: " $msg_count
+  #fi
+  export PYTHONPATH=$OLD_PYTHONPATH
+}
+
+function run_pep8 {
+  echo "Running pep8 ..."
+
+  PEP8_EXCLUDE="vcsversion.py,*.pyc"
+  PEP8_OPTIONS="--exclude=$PEP8_EXCLUDE --repeat --show-source"
+  PEP8_INCLUDE="bin/* ryu setup*.py"
+  ${wrapper} pep8 $PEP8_OPTIONS $PEP8_INCLUDE
+}
+
+#NOSETESTS="nosetests $noseopts $noseargs"
+NOSETESTS="python ./ryu/tests/run_tests.py $noseopts $noseargs"
+
+#if [ -n "$PLUGIN_DIR" ]
+#then
+#    if ! [ -f ./$PLUGIN_DIR/run_tests.py ]
+#    then
+#        echo "Could not find run_tests.py in plugin directory $PLUGIN_DIR"
+#        exit 1
+#    fi
+#fi
+
+if [ $never_venv -eq 0 ]
+then
+  # Remove the virtual environment if --force used
+  if [ $force -eq 1 ]; then
+    echo "Cleaning virtualenv..."
+    rm -rf ${venv}
+  fi
+  if [ -e ${venv} ]; then
+    wrapper="${with_venv}"
+  else
+    if [ $always_venv -eq 1 ]; then
+      # Automatically install the virtualenv
+      python tools/install_venv.py
+      wrapper="${with_venv}"
+    else
+      echo -e "No virtual environment found...create one? (Y/n) \c"
+      read use_ve
+      if [ "x$use_ve" = "xY" -o "x$use_ve" = "x" -o "x$use_ve" = "xy" ]; then
+        # Install the virtualenv and run the test suite in it
+        python tools/install_venv.py
+        wrapper=${with_venv}
+      fi
+    fi
+  fi
+fi
+
+# Delete old coverage data from previous runs
+if [ $coverage -eq 1 ]; then
+    ${wrapper} coverage erase
+fi
+
+if [ $just_pep8 -eq 1 ]; then
+    run_pep8
+    exit
+fi
+if [ $just_pylint -eq 1 ]; then
+    run_pylint
+    exit
+fi
+
+run_tests
+RV=$?
+if [ $no_pep8 -eq 0 ]; then
+    run_pep8
+fi
+
+if [ $coverage -eq 1 ]; then
+    echo "Generating coverage report in coverage.xml and covhtml/"
+    ${wrapper} coverage xml -i
+    ${wrapper} coverage html -d covhtml -i
+fi
+
+exit $RV
diff --git a/ryu/tests/__init__.py b/ryu/tests/__init__.py
new file mode 100644
index 00000000..e69de29b
--- /dev/null
+++ b/ryu/tests/__init__.py
diff --git a/ryu/tests/run_tests.py b/ryu/tests/run_tests.py
new file mode 100644
index 00000000..b3d18686
--- /dev/null
+++ b/ryu/tests/run_tests.py
@@ -0,0 +1,35 @@
+#!/usr/bin/env python
+
+
+import os
+import sys
+
+from nose import config
+from nose import core
+
+sys.path.append(os.getcwd())
+sys.path.append(os.path.dirname(__file__))
+
+
+import ryu.tests.unit
+from ryu.tests.test_lib import run_tests
+
+
+if __name__ == '__main__':
+    exit_status = False
+
+    # if a single test case was specified,
+    # we should only invoked the tests once
+    invoke_once = len(sys.argv) > 1
+
+    cwd = os.getcwd()
+    c = config.Config(stream=sys.stdout,
+                      env=os.environ,
+                      verbosity=3,
+                      includeExe=True,
+                      traverseNamespace=True,
+                      plugins=core.DefaultPluginManager())
+    c.configureWhere(ryu.tests.unit.__path__)
+
+    exit_status = run_tests(c)
+    sys.exit(exit_status)
diff --git a/ryu/tests/test_lib.py b/ryu/tests/test_lib.py
new file mode 100644
index 00000000..c812daff
--- /dev/null
+++ b/ryu/tests/test_lib.py
@@ -0,0 +1,244 @@
+#!/usr/bin/env python
+
+import gettext
+import os
+import unittest
+import sys
+import logging
+
+from nose import result
+from nose import core
+from nose import config
+
+
+class _AnsiColorizer(object):
+    """
+    A colorizer is an object that loosely wraps around a stream, allowing
+    callers to write text to the stream in a particular color.
+
+    Colorizer classes must implement C{supported()} and C{write(text, color)}.
+    """
+    _colors = dict(black=30, red=31, green=32, yellow=33,
+                   blue=34, magenta=35, cyan=36, white=37)
+
+    def __init__(self, stream):
+        self.stream = stream
+
+    def supported(cls, stream=sys.stdout):
+        """
+        A class method that returns True if the current platform supports
+        coloring terminal output using this method. Returns False otherwise.
+        """
+        if not stream.isatty():
+            return False  # auto color only on TTYs
+        try:
+            import curses
+        except ImportError:
+            return False
+        else:
+            try:
+                try:
+                    return curses.tigetnum("colors") > 2
+                except curses.error:
+                    curses.setupterm()
+                    return curses.tigetnum("colors") > 2
+            except:
+                raise
+                # guess false in case of error
+                return False
+    supported = classmethod(supported)
+
+    def write(self, text, color):
+        """
+        Write the given text to the stream in the given color.
+
+        @param text: Text to be written to the stream.
+
+        @param color: A string label for a color. e.g. 'red', 'white'.
+        """
+        color = self._colors[color]
+        self.stream.write('\x1b[%s;1m%s\x1b[0m' % (color, text))
+
+
+class _Win32Colorizer(object):
+    """
+    See _AnsiColorizer docstring.
+    """
+    def __init__(self, stream):
+        from win32console import GetStdHandle, STD_OUT_HANDLE, \
+             FOREGROUND_RED, FOREGROUND_BLUE, FOREGROUND_GREEN, \
+             FOREGROUND_INTENSITY
+        red, green, blue, bold = (FOREGROUND_RED, FOREGROUND_GREEN,
+                                  FOREGROUND_BLUE, FOREGROUND_INTENSITY)
+        self.stream = stream
+        self.screenBuffer = GetStdHandle(STD_OUT_HANDLE)
+        self._colors = {
+            'normal': red | green | blue,
+            'red': red | bold,
+            'green': green | bold,
+            'blue': blue | bold,
+            'yellow': red | green | bold,
+            'magenta': red | blue | bold,
+            'cyan': green | blue | bold,
+            'white': red | green | blue | bold}
+
+    def supported(cls, stream=sys.stdout):
+        try:
+            import win32console
+            screenBuffer = win32console.GetStdHandle(
+                win32console.STD_OUT_HANDLE)
+        except ImportError:
+            return False
+        import pywintypes
+        try:
+            screenBuffer.SetConsoleTextAttribute(
+                win32console.FOREGROUND_RED |
+                win32console.FOREGROUND_GREEN |
+                win32console.FOREGROUND_BLUE)
+        except pywintypes.error:
+            return False
+        else:
+            return True
+    supported = classmethod(supported)
+
+    def write(self, text, color):
+        color = self._colors[color]
+        self.screenBuffer.SetConsoleTextAttribute(color)
+        self.stream.write(text)
+        self.screenBuffer.SetConsoleTextAttribute(self._colors['normal'])
+
+
+class _NullColorizer(object):
+    """
+    See _AnsiColorizer docstring.
+    """
+    def __init__(self, stream):
+        self.stream = stream
+
+    def supported(cls, stream=sys.stdout):
+        return True
+    supported = classmethod(supported)
+
+    def write(self, text, color):
+        self.stream.write(text)
+
+
+class RyuTestResult(result.TextTestResult):
+    def __init__(self, *args, **kw):
+        result.TextTestResult.__init__(self, *args, **kw)
+        self._last_case = None
+        self.colorizer = None
+        # NOTE(vish, tfukushima): reset stdout for the terminal check
+        stdout = sys.__stdout__
+        sys.stdout = sys.__stdout__
+        for colorizer in [_Win32Colorizer, _AnsiColorizer, _NullColorizer]:
+            if colorizer.supported():
+                self.colorizer = colorizer(self.stream)
+                break
+        sys.stdout = stdout
+
+    def getDescription(self, test):
+        return str(test)
+
+    # NOTE(vish, tfukushima): copied from unittest with edit to add color
+    def addSuccess(self, test):
+        unittest.TestResult.addSuccess(self, test)
+        if self.showAll:
+            self.colorizer.write("OK", 'green')
+            self.stream.writeln()
+        elif self.dots:
+            self.stream.write('.')
+            self.stream.flush()
+
+    # NOTE(vish, tfukushima): copied from unittest with edit to add color
+    def addFailure(self, test, err):
+        unittest.TestResult.addFailure(self, test, err)
+        if self.showAll:
+            self.colorizer.write("FAIL", 'red')
+            self.stream.writeln()
+        elif self.dots:
+            self.stream.write('F')
+            self.stream.flush()
+
+    # NOTE(vish, tfukushima): copied from unittest with edit to add color
+    def addError(self, test, err):
+        """Overrides normal addError to add support for errorClasses.
+        If the exception is a registered class, the error will be added
+        to the list for that class, not errors.
+        """
+        stream = getattr(self, 'stream', None)
+        ec, ev, tb = err
+        try:
+            exc_info = self._exc_info_to_string(err, test)
+        except TypeError:
+            # This is for compatibility with Python 2.3.
+            exc_info = self._exc_info_to_string(err)
+        for cls, (storage, label, isfail) in self.errorClasses.items():
+            if result.isclass(ec) and issubclass(ec, cls):
+                if isfail:
+                    test.passwd = False
+                storage.append((test, exc_info))
+                # Might get patched into a streamless result
+                if stream is not None:
+                    if self.showAll:
+                        message = [label]
+                        detail = result._exception_details(err[1])
+                        if detail:
+                            message.append(detail)
+                        stream.writeln(": ".join(message))
+                    elif self.dots:
+                        stream.write(label[:1])
+                return
+        self.errors.append((test, exc_info))
+        test.passed = False
+        if stream is not None:
+            if self.showAll:
+                self.colorizer.write("ERROR", 'red')
+                self.stream.writeln()
+            elif self.dots:
+                stream.write('E')
+
+    def startTest(self, test):
+        unittest.TestResult.startTest(self, test)
+        current_case = test.test.__class__.__name__
+
+        if self.showAll:
+            if current_case != self._last_case:
+                self.stream.writeln(current_case)
+                self._last_case = current_case
+            #NOTE(salvatore-orlando):
+            #slightly changed in order to print test case class
+            #together with unit test name
+            self.stream.write(
+                '    %s' % str(test.test).ljust(60))
+            self.stream.flush()
+
+
+class RyuTestRunner(core.TextTestRunner):
+    def _makeResult(self):
+        return RyuTestResult(self.stream,
+                              self.descriptions,
+                              self.verbosity,
+                              self.config)
+
+
+def run_tests(c=None):
+    logger = logging.getLogger()
+    hdlr = logging.StreamHandler()
+    formatter = logging.Formatter('%(asctime)s %(levelname)s %(message)s')
+    hdlr.setFormatter(formatter)
+    logger.addHandler(hdlr)
+    logger.setLevel(logging.DEBUG)
+
+    # NOTE(bgh): I'm not entirely sure why but nose gets confused here when
+    # calling run_tests from a plugin directory run_tests.py (instead of the
+    # main run_tests.py).  It will call run_tests with no arguments and the
+    # testing of run_tests will fail (though the plugin tests will pass).  For
+    # now we just return True to let the run_tests test pass.
+    if not c:
+        return True
+
+    runner = RyuTestRunner(stream=c.stream,
+                            verbosity=c.verbosity,
+                            config=c)
+    return not core.run(config=c, testRunner=runner)
diff --git a/ryu/tests/unit/__init__.py b/ryu/tests/unit/__init__.py
new file mode 100644
index 00000000..e69de29b
--- /dev/null
+++ b/ryu/tests/unit/__init__.py
diff --git a/ryu/tests/unit/ofproto/__init__.py b/ryu/tests/unit/ofproto/__init__.py
new file mode 100644
index 00000000..e69de29b
--- /dev/null
+++ b/ryu/tests/unit/ofproto/__init__.py
diff --git a/ryu/tests/unit/ofproto/test_ofproto_parser.py b/ryu/tests/unit/ofproto/test_ofproto_parser.py
new file mode 100644
index 00000000..163c9de0
--- /dev/null
+++ b/ryu/tests/unit/ofproto/test_ofproto_parser.py
@@ -0,0 +1,62 @@
+# vim: tabstop=4 shiftwidth=4 softtabstop=4
+
+import binascii
+import unittest
+from nose.tools import ok_, eq_
+
+from ryu.ofproto import ofproto, ofproto_parser, ofproto_v1_0_parser
+
+import logging
+LOG = logging.getLogger(__name__)
+
+
+class TestOfproto_Parser(unittest.TestCase):
+    def setUp(self):
+        LOG.debug('setUp')
+        self.bufHello = binascii.unhexlify('0100000800000001')
+        self.bufFeaturesReply = binascii.unhexlify(
+                '010600b0000000020000000000000abc' \
+                + '00000100010000000000008700000fff' \
+                + '0002aefa39d2b9177472656d61302d30' \
+                + '00000000000000000000000000000000' \
+                + '000000c0000000000000000000000000' \
+                + 'fffe723f9a764cc87673775f30786162' \
+                + '63000000000000000000000100000001' \
+                + '00000082000000000000000000000000' \
+                + '00012200d6c5a1947472656d61312d30' \
+                + '00000000000000000000000000000000' \
+                + '000000c0000000000000000000000000')
+        self.bufPacketIn = binascii.unhexlify(
+                '010a005200000000000001010040' \
+                + '00020000000000000002000000000001' \
+                + '080045000032000000004011f967c0a8' \
+                + '0001c0a8000200010001001e00000000' \
+                + '00000000000000000000000000000000' \
+                + '00000000')
+
+    def tearDown(self):
+        LOG.debug('tearDown')
+        pass
+
+    def testHello(self):
+        (version, msg_type, msg_len, xid) = ofproto_parser.header(self.bufHello)
+        eq_(version, 1)
+        eq_(msg_type, 0)
+        eq_(msg_len, 8)
+        eq_(xid, 1)
+
+    def testFeaturesReply(self):
+        (version, msg_type, msg_len, xid) = ofproto_parser.header(self.bufFeaturesReply)
+        msg = ofproto_parser.msg(self, version, msg_type, msg_len, xid, self.bufFeaturesReply)
+        LOG.debug(msg)
+        ok_(isinstance(msg, ofproto_v1_0_parser.OFPSwitchFeatures))
+        LOG.debug(msg.ports[65534])
+        ok_(isinstance(msg.ports[1], ofproto_v1_0_parser.OFPPhyPort))
+        ok_(isinstance(msg.ports[2], ofproto_v1_0_parser.OFPPhyPort))
+        ok_(isinstance(msg.ports[65534], ofproto_v1_0_parser.OFPPhyPort))
+
+    def testPacketIn(self):
+        (version, msg_type, msg_len, xid) = ofproto_parser.header(self.bufPacketIn)
+        msg = ofproto_parser.msg(self, version, msg_type, msg_len, xid, self.bufPacketIn)
+        LOG.debug(msg)
+        ok_(isinstance(msg, ofproto_v1_0_parser.OFPPacketIn))
diff --git a/ryu/tests/unit/ofproto/test_parser_v10.py b/ryu/tests/unit/ofproto/test_parser_v10.py
new file mode 100644
index 00000000..9b156c80
--- /dev/null
+++ b/ryu/tests/unit/ofproto/test_parser_v10.py
@@ -0,0 +1,92 @@
+# vim: tabstop=4 shiftwidth=4 softtabstop=4
+
+import unittest
+import logging
+from nose.tools import *
+#from ryu.ofproto.ofproto_v1_0 import *
+from ryu.ofproto.ofproto_v1_0_parser import *
+
+LOG = logging.getLogger('test_ofproto_v10')
+
+
+class TestOFPActionOutput(unittest.TestCase):
+    """ Test case for ofprotp_v1_0_parser.OFPActionOutput
+    """
+
+    def setup(self):
+        pass
+
+    def tearndown(self):
+        pass
+
+    def test_init(self):
+        c = OFPActionOutput(ofproto_v1_0.OFPAT_OUTPUT,
+                            ofproto_v1_0.OFP_ACTION_OUTPUT_SIZE)
+        eq_(ofproto_v1_0.OFPAT_OUTPUT, c.port)
+        eq_(ofproto_v1_0.OFP_ACTION_OUTPUT_SIZE, c.max_len)
+
+
+    def test_parser(self):
+        type_   = '\x00\x00'
+        len_    = '\x00\x08'
+        port    = '\x00\x00'
+        max_len = '\x00\x08'
+
+        buf = type_ + len_ + port + max_len
+        c = OFPActionOutput(ofproto_v1_0.OFPAT_OUTPUT,
+                            ofproto_v1_0.OFP_ACTION_OUTPUT_SIZE)
+
+        c.parser(buf, 0)
+        eq_(c.port, ofproto_v1_0.OFPAT_OUTPUT)
+        eq_(c.max_len, ofproto_v1_0.OFP_ACTION_OUTPUT_SIZE)
+
+
+    @raises(AssertionError)
+    def test_parser_check_type(self):
+        type_   = '\x00\x01'
+        len_    = '\x00\x08'
+        port    = '\x00\x00'
+        max_len = '\x00\x08'
+
+        buf = type_ + len_ + port + max_len
+        c = OFPActionOutput(ofproto_v1_0.OFPAT_OUTPUT,
+                            ofproto_v1_0.OFP_ACTION_OUTPUT_SIZE)
+
+        c.parser(buf, 0)
+
+
+    @raises(AssertionError)
+    def test_parser_check_len(self):
+        type_   = '\x00\x00'
+        len_    = '\x00\x0a'
+        port    = '\x00\x00'
+        max_len = '\x00\x08'
+
+        buf = type_ + len_ + port + max_len
+        c = OFPActionOutput(ofproto_v1_0.OFPAT_OUTPUT,
+                            ofproto_v1_0.OFP_ACTION_OUTPUT_SIZE)
+
+        c.parser(buf, 0)
+
+
+    def test_serialize_short(self):
+        c = OFPActionOutput(ofproto_v1_0.OFPAT_OUTPUT,
+                            ofproto_v1_0.OFP_ACTION_OUTPUT_SIZE)
+
+        len_ = c.max_len - 1
+        buf  = bytearray().zfill(len_)
+        #LOG.debug("buf: %s", buf)
+
+        c.serialize(buf, c.max_len)
+
+
+    def test_serialize_max(self):
+        c = OFPActionOutput(ofproto_v1_0.OFPAT_OUTPUT,
+                            ofproto_v1_0.OFP_ACTION_OUTPUT_SIZE)
+
+        len_ = c.max_len + struct.calcsize(ofproto_v1_0.OFP_ACTION_OUTPUT_PACK_STR) - 1
+        buf  = str().zfill(len_)
+        #LOG.debug("buf: %s", buf)
+
+        c.serialize(buf, c.max_len)
+
diff --git a/ryu/tests/unit/sample/__init__.py b/ryu/tests/unit/sample/__init__.py
new file mode 100644
index 00000000..e69de29b
--- /dev/null
+++ b/ryu/tests/unit/sample/__init__.py
diff --git a/ryu/tests/unit/sample/test_sample1.py b/ryu/tests/unit/sample/test_sample1.py
new file mode 100644
index 00000000..e29dcf9a
--- /dev/null
+++ b/ryu/tests/unit/sample/test_sample1.py
@@ -0,0 +1,20 @@
+# vim: tabstop=4 shiftwidth=4 softtabstop=4
+
+import unittest
+from nose.tools import ok_, eq_
+#from ryu.app.simple_switch import SimpleSwitch
+
+import logging
+
+
+LOG = logging.getLogger('ryu.tests.test_sample1')
+
+
+class TestSample1(unittest.TestCase):
+
+    def testS1Func1(self):
+        LOG.debug('testS1Func1 - START')
+        ok_(True)
+
+    def testS1Func2(self):
+        ok_(True)
diff --git a/ryu/tests/unit/sample/test_sample2.py b/ryu/tests/unit/sample/test_sample2.py
new file mode 100644
index 00000000..74baca9b
--- /dev/null
+++ b/ryu/tests/unit/sample/test_sample2.py
@@ -0,0 +1,14 @@
+# vim: tabstop=4 shiftwidth=4 softtabstop=4
+
+import unittest
+from nose.tools import ok_, eq_
+#from ryu.app.simple_switch import SimpleSwitch
+
+
+class TestSample2(unittest.TestCase):
+
+    def testS2Func1(self):
+        ok_(True)
+
+    def testS2Func2(self):
+        ok_(True)
diff --git a/ryu/tests/unit/sample/test_simple_switch.py b/ryu/tests/unit/sample/test_simple_switch.py
new file mode 100644
index 00000000..5fb76304
--- /dev/null
+++ b/ryu/tests/unit/sample/test_simple_switch.py
@@ -0,0 +1,21 @@
+# vim: tabstop=4 shiftwidth=4 softtabstop=4
+
+import unittest
+from nose.tools import ok_, eq_
+
+from ryu.app.simple_switch import SimpleSwitch
+
+import logging
+LOG = logging.getLogger(__name__)
+
+
+class TestSimpleSwitch(unittest.TestCase):
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def testInit(self):
+        ss = SimpleSwitch()
+        ok_(True)
diff --git a/tools/install_venv.py b/tools/install_venv.py
new file mode 100644
index 00000000..09b321bd
--- /dev/null
+++ b/tools/install_venv.py
@@ -0,0 +1,136 @@
+#!/usr/bin/env python
+# vim: tabstop=4 shiftwidth=4 softtabstop=4
+
+# Copyright 2010 United States Government as represented by the
+# Administrator of the National Aeronautics and Space Administration.
+# All Rights Reserved.
+#
+# Copyright 2010 OpenStack LLC.
+#
+#    Licensed 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.
+
+"""
+Installation script for Quantum's development virtualenv
+"""
+
+import os
+import subprocess
+import sys
+
+
+ROOT = os.path.dirname(os.path.dirname(os.path.realpath(__file__)))
+VENV = os.path.join(ROOT, '.venv')
+PIP_REQUIRES = os.path.join(ROOT, 'tools', 'pip-requires')
+TEST_REQUIRES = os.path.join(ROOT, 'tools', 'test-requires')
+PY_VERSION = "python%s.%s" % (sys.version_info[0], sys.version_info[1])
+
+VENV_EXISTS = bool(os.path.exists(VENV))
+
+def die(message, *args):
+    print >> sys.stderr, message % args
+    sys.exit(1)
+
+
+def run_command(cmd, redirect_output=True, check_exit_code=True):
+    """
+    Runs a command in an out-of-process shell, returning the
+    output of that command.  Working directory is ROOT.
+    """
+    if redirect_output:
+        stdout = subprocess.PIPE
+    else:
+        stdout = None
+    proc = subprocess.Popen(cmd, cwd=ROOT, stdout=stdout)
+    output = proc.communicate()[0]
+    if check_exit_code and proc.returncode != 0:
+        raise Exception('Command "%s" failed.\n%s' % (' '.join(cmd), output))
+    return output
+
+
+HAS_EASY_INSTALL = bool(run_command(['which', 'easy_install'],
+                                    check_exit_code=False).strip())
+HAS_VIRTUALENV = bool(run_command(['which', 'virtualenv'],
+                                    check_exit_code=False).strip())
+
+
+def check_dependencies():
+    """Make sure virtualenv is in the path."""
+
+    if not HAS_VIRTUALENV:
+        raise Exception('Virtualenv not found. ' + \
+                         'Try installing python-virtualenv')
+    print 'done.'
+
+
+def create_virtualenv(venv=VENV, install_pip=False):
+    """Creates the virtual environment and installs PIP only into the
+    virtual environment
+    """
+    print 'Creating venv...',
+
+    install = ['virtualenv', '-q', venv]
+    run_command(install)
+
+    print 'done.'
+    print 'Installing pip in virtualenv...',
+    if install_pip and \
+            not run_command(['tools/with_venv.sh', 'easy_install',
+                             'pip>1.0']):
+        die("Failed to install pip.")
+    print 'done.'
+
+
+def install_dependencies(venv=VENV):
+    print 'Installing dependencies with pip (this can take a while)...'
+    run_command(['tools/with_venv.sh', 'pip', 'install', '-r',
+                 PIP_REQUIRES], redirect_output=False)
+    run_command(['tools/with_venv.sh', 'pip', 'install', '-r',
+                 TEST_REQUIRES], redirect_output=False)
+
+    # Tell the virtual env how to "import quantum"
+    pthfile = os.path.join(venv, "lib", PY_VERSION, "site-packages",
+                                 "quantum.pth")
+    f = open(pthfile, 'w')
+    f.write("%s\n" % ROOT)
+
+
+def print_help():
+    help = """
+ Quantum development environment setup is complete.
+
+ Quantum development uses virtualenv to track and manage Python dependencies
+ while in development and testing.
+
+ To activate the Quantum virtualenv for the extent of your current shell
+ session you can run:
+
+ $ source .venv/bin/activate
+
+ Or, if you prefer, you can run commands in the virtualenv on a case by case
+ basis by running:
+
+ $ tools/with_venv.sh <your command>
+
+ Also, make test will automatically use the virtualenv.
+    """
+    print help
+
+
+def main(argv):
+    check_dependencies()
+    create_virtualenv()
+    install_dependencies()
+    print_help()
+
+if __name__ == '__main__':
+    main(sys.argv)
diff --git a/tools/pip-requires b/tools/pip-requires
new file mode 100644
index 00000000..b599fb5b
--- /dev/null
+++ b/tools/pip-requires
@@ -0,0 +1,13 @@
+#Paste
+#PasteDeploy==1.5.0
+#Routes>=1.12.3
+#eventlet>=0.9.12
+#lxml
+#mox==0.5.3
+gevent>=0.13
+python-gflags==1.3
+simplejson
+#sqlalchemy
+webob==1.0.8
+
+#-e git+https://review.openstack.org/p/openstack/python-quantumclient#egg=python-quantumclient
diff --git a/tools/test-requires b/tools/test-requires
new file mode 100644
index 00000000..e8276058
--- /dev/null
+++ b/tools/test-requires
@@ -0,0 +1,9 @@
+#distribute>=0.6.24
+
+coverage
+#mock>=0.7.1
+nose
+#nosexcover
+#openstack.nose_plugin
+pep8==0.6.1
+#webtest
diff --git a/tools/with_venv.sh b/tools/with_venv.sh
new file mode 100755
index 00000000..93eaa889
--- /dev/null
+++ b/tools/with_venv.sh
@@ -0,0 +1,21 @@
+#!/bin/bash
+# vim: tabstop=4 shiftwidth=4 softtabstop=4
+
+# Copyright 2011 OpenStack LLC.
+# All Rights Reserved.
+#
+#    Licensed 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.
+
+TOOLS=`dirname $0`
+VENV=$TOOLS/../.venv
+source $VENV/bin/activate && $@