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nosetester.py
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""" Nose test running. This module implements ``test()`` and ``bench()`` functions for NumPy modules. """ from __future__ import division, absolute_import, print_function import os import sys import warnings from numpy.compat import basestring import numpy as np def get_package_name(filepath): """ Given a path where a package is installed, determine its name. Parameters ---------- filepath : str Path to a file. If the determination fails, "numpy" is returned. Examples -------- >>> np.testing.nosetester.get_package_name('nonsense') 'numpy' """ fullpath = filepath[:] pkg_name = [] while 'site-packages' in filepath or 'dist-packages' in filepath: filepath, p2 = os.path.split(filepath) if p2 in ('site-packages', 'dist-packages'): break pkg_name.append(p2) # if package name determination failed, just default to numpy/scipy if not pkg_name: if 'scipy' in fullpath: return 'scipy' else: return 'numpy' # otherwise, reverse to get correct order and return pkg_name.reverse() # don't include the outer egg directory if pkg_name[0].endswith('.egg'): pkg_name.pop(0) return '.'.join(pkg_name) def import_nose(): """ Import nose only when needed. """ fine_nose = True minimum_nose_version = (1, 0, 0) try: import nose except ImportError: fine_nose = False else: if nose.__versioninfo__ < minimum_nose_version: fine_nose = False if not fine_nose: msg = ('Need nose >= %d.%d.%d for tests - see ' 'http://somethingaboutorange.com/mrl/projects/nose' % minimum_nose_version) raise ImportError(msg) return nose def run_module_suite(file_to_run=None, argv=None): """ Run a test module. Equivalent to calling ``$ nosetests <argv> <file_to_run>`` from the command line Parameters ---------- file_to_run : str, optional Path to test module, or None. By default, run the module from which this function is called. argv : list of strings Arguments to be passed to the nose test runner. ``argv[0]`` is ignored. All command line arguments accepted by ``nosetests`` will work. If it is the default value None, sys.argv is used. .. versionadded:: 1.9.0 Examples -------- Adding the following:: if __name__ == "__main__" : run_module_suite(argv=sys.argv) at the end of a test module will run the tests when that module is called in the python interpreter. Alternatively, calling:: >>> run_module_suite(file_to_run="numpy/tests/test_matlib.py") from an interpreter will run all the test routine in 'test_matlib.py'. """ if file_to_run is None: f = sys._getframe(1) file_to_run = f.f_locals.get('__file__', None) if file_to_run is None: raise AssertionError if argv is None: argv = sys.argv + [file_to_run] else: argv = argv + [file_to_run] nose = import_nose() from .noseclasses import KnownFailurePlugin nose.run(argv=argv, addplugins=[KnownFailurePlugin()]) class NoseTester(object): """ Nose test runner. This class is made available as numpy.testing.Tester, and a test function is typically added to a package's __init__.py like so:: from numpy.testing import Tester test = Tester().test Calling this test function finds and runs all tests associated with the package and all its sub-packages. Attributes ---------- package_path : str Full path to the package to test. package_name : str Name of the package to test. Parameters ---------- package : module, str or None, optional The package to test. If a string, this should be the full path to the package. If None (default), `package` is set to the module from which `NoseTester` is initialized. raise_warnings : None, str or sequence of warnings, optional This specifies which warnings to configure as 'raise' instead of 'warn' during the test execution. Valid strings are: - "develop" : equals ``(DeprecationWarning, RuntimeWarning)`` - "release" : equals ``()``, don't raise on any warnings. Default is "release". depth : int, optional If `package` is None, then this can be used to initialize from the module of the caller of (the caller of (...)) the code that initializes `NoseTester`. Default of 0 means the module of the immediate caller; higher values are useful for utility routines that want to initialize `NoseTester` objects on behalf of other code. """ def __init__(self, package=None, raise_warnings="release", depth=0): # Back-compat: 'None' used to mean either "release" or "develop" # depending on whether this was a release or develop version of # numpy. Those semantics were fine for testing numpy, but not so # helpful for downstream projects like scipy that use # numpy.testing. (They want to set this based on whether *they* are a # release or develop version, not whether numpy is.) So we continue to # accept 'None' for back-compat, but it's now just an alias for the # default "release". if raise_warnings is None: raise_warnings = "release" package_name = None if package is None: f = sys._getframe(1 + depth) package_path = f.f_locals.get('__file__', None) if package_path is None: raise AssertionError package_path = os.path.dirname(package_path) package_name = f.f_locals.get('__name__', None) elif isinstance(package, type(os)): package_path = os.path.dirname(package.__file__) package_name = getattr(package, '__name__', None) else: package_path = str(package) self.package_path = package_path # Find the package name under test; this name is used to limit coverage # reporting (if enabled). if package_name is None: package_name = get_package_name(package_path) self.package_name = package_name # Set to "release" in constructor in maintenance branches. self.raise_warnings = raise_warnings def _test_argv(self, label, verbose, extra_argv): ''' Generate argv for nosetest command Parameters ---------- label : {'fast', 'full', '', attribute identifier}, optional see ``test`` docstring verbose : int, optional Verbosity value for test outputs, in the range 1-10. Default is 1. extra_argv : list, optional List with any extra arguments to pass to nosetests. Returns ------- argv : list command line arguments that will be passed to nose ''' argv = [__file__, self.package_path, '-s'] if label and label != 'full': if not isinstance(label, basestring): raise TypeError('Selection label should be a string') if label == 'fast': label = 'not slow' argv += ['-A', label] argv += ['--verbosity', str(verbose)] # When installing with setuptools, and also in some other cases, the # test_*.py files end up marked +x executable. Nose, by default, does # not run files marked with +x as they might be scripts. However, in # our case nose only looks for test_*.py files under the package # directory, which should be safe. argv += ['--exe'] if extra_argv: argv += extra_argv return argv def _show_system_info(self): nose = import_nose() import numpy print("NumPy version %s" % numpy.__version__) relaxed_strides = numpy.ones((10, 1), order="C").flags.f_contiguous print("NumPy relaxed strides checking option:", relaxed_strides) npdir = os.path.dirname(numpy.__file__) print("NumPy is installed in %s" % npdir) if 'scipy' in self.package_name: import scipy print("SciPy version %s" % scipy.__version__) spdir = os.path.dirname(scipy.__file__) print("SciPy is installed in %s" % spdir) pyversion = sys.version.replace('\n', '') print("Python version %s" % pyversion) print("nose version %d.%d.%d" % nose.__versioninfo__) def _get_custom_doctester(self): """ Return instantiated plugin for doctests Allows subclassing of this class to override doctester A return value of None means use the nose builtin doctest plugin """ from .noseclasses import NumpyDoctest return NumpyDoctest() def prepare_test_args(self, label='fast', verbose=1, extra_argv=None, doctests=False, coverage=False): """ Run tests for module using nose. This method does the heavy lifting for the `test` method. It takes all the same arguments, for details see `test`. See Also -------- test """ # fail with nice error message if nose is not present import_nose() # compile argv argv = self._test_argv(label, verbose, extra_argv) # our way of doing coverage if coverage: argv += ['--cover-package=%s' % self.package_name, '--with-coverage', '--cover-tests', '--cover-erase'] # construct list of plugins import nose.plugins.builtin from .noseclasses import KnownFailurePlugin, Unplugger plugins = [KnownFailurePlugin()] plugins += [p() for p in nose.plugins.builtin.plugins] # add doctesting if required doctest_argv = '--with-doctest' in argv if doctests == False and doctest_argv: doctests = True plug = self._get_custom_doctester() if plug is None: # use standard doctesting if doctests and not doctest_argv: argv += ['--with-doctest'] else: # custom doctesting if doctest_argv: # in fact the unplugger would take care of this argv.remove('--with-doctest') plugins += [Unplugger('doctest'), plug] if doctests: argv += ['--with-' + plug.name] return argv, plugins def test(self, label='fast', verbose=1, extra_argv=None, doctests=False, coverage=False, raise_warnings=None): """ Run tests for module using nose. Parameters ---------- label : {'fast', 'full', '', attribute identifier}, optional Identifies the tests to run. This can be a string to pass to the nosetests executable with the '-A' option, or one of several special values. Special values are: * 'fast' - the default - which corresponds to the ``nosetests -A`` option of 'not slow'. * 'full' - fast (as above) and slow tests as in the 'no -A' option to nosetests - this is the same as ''. * None or '' - run all tests. attribute_identifier - string passed directly to nosetests as '-A'. verbose : int, optional Verbosity value for test outputs, in the range 1-10. Default is 1. extra_argv : list, optional List with any extra arguments to pass to nosetests. doctests : bool, optional If True, run doctests in module. Default is False. coverage : bool, optional If True, report coverage of NumPy code. Default is False. (This requires the `coverage module: <http://nedbatchelder.com/code/modules/coverage.html>`_). raise_warnings : str or sequence of warnings, optional This specifies which warnings to configure as 'raise' instead of 'warn' during the test execution. Valid strings are: - "develop" : equals ``(DeprecationWarning, RuntimeWarning)`` - "release" : equals ``()``, don't raise on any warnings. Returns ------- result : object Returns the result of running the tests as a ``nose.result.TextTestResult`` object. Notes ----- Each NumPy module exposes `test` in its namespace to run all tests for it. For example, to run all tests for numpy.lib: >>> np.lib.test() #doctest: +SKIP Examples -------- >>> result = np.lib.test() #doctest: +SKIP Running unit tests for numpy.lib ... Ran 976 tests in 3.933s OK >>> result.errors #doctest: +SKIP [] >>> result.knownfail #doctest: +SKIP [] """ # cap verbosity at 3 because nose becomes *very* verbose beyond that verbose = min(verbose, 3) from . import utils utils.verbose = verbose if doctests: print("Running unit tests and doctests for %s" % self.package_name) else: print("Running unit tests for %s" % self.package_name) self._show_system_info() # reset doctest state on every run import doctest doctest.master = None if raise_warnings is None: raise_warnings = self.raise_warnings _warn_opts = dict(develop=(DeprecationWarning, RuntimeWarning), release=()) if isinstance(raise_warnings, basestring): raise_warnings = _warn_opts[raise_warnings] with warnings.catch_warnings(): # Reset the warning filters to the default state, # so that running the tests is more repeatable. warnings.resetwarnings() # Set all warnings to 'warn', this is because the default 'once' # has the bad property of possibly shadowing later warnings. warnings.filterwarnings('always') # Force the requested warnings to raise for warningtype in raise_warnings: warnings.filterwarnings('error', category=warningtype) # Filter out annoying import messages. warnings.filterwarnings('ignore', message='Not importing directory') warnings.filterwarnings("ignore", message="numpy.dtype size changed") warnings.filterwarnings("ignore", message="numpy.ufunc size changed") warnings.filterwarnings("ignore", category=np.ModuleDeprecationWarning) warnings.filterwarnings("ignore", category=FutureWarning) # Filter out boolean '-' deprecation messages. This allows # older versions of scipy to test without a flood of messages. warnings.filterwarnings("ignore", message=".*boolean negative.*") warnings.filterwarnings("ignore", message=".*boolean subtract.*") # Filter out some deprecation warnings inside nose 1.3.7 when run # on python 3.5b2. See # https://github.com/nose-devs/nose/issues/929 warnings.filterwarnings("ignore", message=".*getargspec.*", category=DeprecationWarning, module="nose\.") from .noseclasses import NumpyTestProgram argv, plugins = self.prepare_test_args( label, verbose, extra_argv, doctests, coverage) t = NumpyTestProgram(argv=argv, exit=False, plugins=plugins) return t.result def bench(self, label='fast', verbose=1, extra_argv=None): """ Run benchmarks for module using nose. Parameters ---------- label : {'fast', 'full', '', attribute identifier}, optional Identifies the benchmarks to run. This can be a string to pass to the nosetests executable with the '-A' option, or one of several special values. Special values are: * 'fast' - the default - which corresponds to the ``nosetests -A`` option of 'not slow'. * 'full' - fast (as above) and slow benchmarks as in the 'no -A' option to nosetests - this is the same as ''. * None or '' - run all tests. attribute_identifier - string passed directly to nosetests as '-A'. verbose : int, optional Verbosity value for benchmark outputs, in the range 1-10. Default is 1. extra_argv : list, optional List with any extra arguments to pass to nosetests. Returns ------- success : bool Returns True if running the benchmarks works, False if an error occurred. Notes ----- Benchmarks are like tests, but have names starting with "bench" instead of "test", and can be found under the "benchmarks" sub-directory of the module. Each NumPy module exposes `bench` in its namespace to run all benchmarks for it. Examples -------- >>> success = np.lib.bench() #doctest: +SKIP Running benchmarks for numpy.lib ... using 562341 items: unique: 0.11 unique1d: 0.11 ratio: 1.0 nUnique: 56230 == 56230 ... OK >>> success #doctest: +SKIP True """ print("Running benchmarks for %s" % self.package_name) self._show_system_info() argv = self._test_argv(label, verbose, extra_argv) argv += ['--match', r'(?:^|[\\b_\\.%s-])[Bb]ench' % os.sep] # import nose or make informative error nose = import_nose() # get plugin to disable doctests from .noseclasses import Unplugger add_plugins = [Unplugger('doctest')] return nose.run(argv=argv, addplugins=add_plugins) def _numpy_tester(): if hasattr(np, "__version__") and ".dev0" in np.__version__: mode = "develop" else: mode = "release" return NoseTester(raise_warnings=mode, depth=1)