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Diffstat (limited to 'tests/test_lib.py')
| -rw-r--r-- | tests/test_lib.py | 270 |
1 files changed, 270 insertions, 0 deletions
diff --git a/tests/test_lib.py b/tests/test_lib.py new file mode 100644 index 00000000..c1c0f82e --- /dev/null +++ b/tests/test_lib.py @@ -0,0 +1,270 @@ +# Copyright (C) 2013,2014,2015 Nippon Telegraph and Telephone Corporation. +# Copyright (C) 2013,2014,2015 YAMAMOTO Takashi <yamamoto at valinux co jp> +# +# 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. + +import gettext +import os +import unittest +import six +import sys +import types +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: + # 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 + from win32console import FOREGROUND_RED, FOREGROUND_BLUE + from win32console import 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_detail(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) + + +def add_method(cls, method_name, method): + """Add the method to the class dynamically, keeping unittest/nose happy.""" + method.func_name = method_name + method.__name__ = method_name + if six.PY3: + methodtype = types.MethodType(method, cls) + else: + methodtype = types.MethodType(method, None, cls) + setattr(cls, method_name, methodtype) |