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Diffstat (limited to 'waflib/Tools/waf_unit_test.py')
| -rw-r--r-- | waflib/Tools/waf_unit_test.py | 296 |
1 files changed, 296 insertions, 0 deletions
diff --git a/waflib/Tools/waf_unit_test.py b/waflib/Tools/waf_unit_test.py new file mode 100644 index 0000000..a71ed1c --- /dev/null +++ b/waflib/Tools/waf_unit_test.py @@ -0,0 +1,296 @@ +#!/usr/bin/env python +# encoding: utf-8 +# Carlos Rafael Giani, 2006 +# Thomas Nagy, 2010-2018 (ita) + +""" +Unit testing system for C/C++/D and interpreted languages providing test execution: + +* in parallel, by using ``waf -j`` +* partial (only the tests that have changed) or full (by using ``waf --alltests``) + +The tests are declared by adding the **test** feature to programs:: + + def options(opt): + opt.load('compiler_cxx waf_unit_test') + def configure(conf): + conf.load('compiler_cxx waf_unit_test') + def build(bld): + bld(features='cxx cxxprogram test', source='main.cpp', target='app') + # or + bld.program(features='test', source='main2.cpp', target='app2') + +When the build is executed, the program 'test' will be built and executed without arguments. +The success/failure is detected by looking at the return code. The status and the standard output/error +are stored on the build context. + +The results can be displayed by registering a callback function. Here is how to call +the predefined callback:: + + def build(bld): + bld(features='cxx cxxprogram test', source='main.c', target='app') + from waflib.Tools import waf_unit_test + bld.add_post_fun(waf_unit_test.summary) + +By passing --dump-test-scripts the build outputs corresponding python files +(with extension _run.py) that are useful for debugging purposes. +""" + +import os, shlex, sys +from waflib.TaskGen import feature, after_method, taskgen_method +from waflib import Utils, Task, Logs, Options +from waflib.Tools import ccroot +testlock = Utils.threading.Lock() + +SCRIPT_TEMPLATE = """#! %(python)s +import subprocess, sys +cmd = %(cmd)r +# if you want to debug with gdb: +#cmd = ['gdb', '-args'] + cmd +env = %(env)r +status = subprocess.call(cmd, env=env, cwd=%(cwd)r, shell=isinstance(cmd, str)) +sys.exit(status) +""" + +@taskgen_method +def handle_ut_cwd(self, key): + """ + Task generator method, used internally to limit code duplication. + This method may disappear anytime. + """ + cwd = getattr(self, key, None) + if cwd: + if isinstance(cwd, str): + # we want a Node instance + if os.path.isabs(cwd): + self.ut_cwd = self.bld.root.make_node(cwd) + else: + self.ut_cwd = self.path.make_node(cwd) + +@feature('test_scripts') +def make_interpreted_test(self): + """Create interpreted unit tests.""" + for x in ['test_scripts_source', 'test_scripts_template']: + if not hasattr(self, x): + Logs.warn('a test_scripts taskgen i missing %s' % x) + return + + self.ut_run, lst = Task.compile_fun(self.test_scripts_template, shell=getattr(self, 'test_scripts_shell', False)) + + script_nodes = self.to_nodes(self.test_scripts_source) + for script_node in script_nodes: + tsk = self.create_task('utest', [script_node]) + tsk.vars = lst + tsk.vars + tsk.env['SCRIPT'] = script_node.path_from(tsk.get_cwd()) + + self.handle_ut_cwd('test_scripts_cwd') + + env = getattr(self, 'test_scripts_env', None) + if env: + self.ut_env = env + else: + self.ut_env = dict(os.environ) + + paths = getattr(self, 'test_scripts_paths', {}) + for (k,v) in paths.items(): + p = self.ut_env.get(k, '').split(os.pathsep) + if isinstance(v, str): + v = v.split(os.pathsep) + self.ut_env[k] = os.pathsep.join(p + v) + +@feature('test') +@after_method('apply_link', 'process_use') +def make_test(self): + """Create the unit test task. There can be only one unit test task by task generator.""" + if not getattr(self, 'link_task', None): + return + + tsk = self.create_task('utest', self.link_task.outputs) + if getattr(self, 'ut_str', None): + self.ut_run, lst = Task.compile_fun(self.ut_str, shell=getattr(self, 'ut_shell', False)) + tsk.vars = lst + tsk.vars + + self.handle_ut_cwd('ut_cwd') + + if not hasattr(self, 'ut_paths'): + paths = [] + for x in self.tmp_use_sorted: + try: + y = self.bld.get_tgen_by_name(x).link_task + except AttributeError: + pass + else: + if not isinstance(y, ccroot.stlink_task): + paths.append(y.outputs[0].parent.abspath()) + self.ut_paths = os.pathsep.join(paths) + os.pathsep + + if not hasattr(self, 'ut_env'): + self.ut_env = dct = dict(os.environ) + def add_path(var): + dct[var] = self.ut_paths + dct.get(var,'') + if Utils.is_win32: + add_path('PATH') + elif Utils.unversioned_sys_platform() == 'darwin': + add_path('DYLD_LIBRARY_PATH') + add_path('LD_LIBRARY_PATH') + else: + add_path('LD_LIBRARY_PATH') + + if not hasattr(self, 'ut_cmd'): + self.ut_cmd = getattr(Options.options, 'testcmd', False) + +@taskgen_method +def add_test_results(self, tup): + """Override and return tup[1] to interrupt the build immediately if a test does not run""" + Logs.debug("ut: %r", tup) + try: + self.utest_results.append(tup) + except AttributeError: + self.utest_results = [tup] + try: + self.bld.utest_results.append(tup) + except AttributeError: + self.bld.utest_results = [tup] + +@Task.deep_inputs +class utest(Task.Task): + """ + Execute a unit test + """ + color = 'PINK' + after = ['vnum', 'inst'] + vars = [] + + def runnable_status(self): + """ + Always execute the task if `waf --alltests` was used or no + tests if ``waf --notests`` was used + """ + if getattr(Options.options, 'no_tests', False): + return Task.SKIP_ME + + ret = super(utest, self).runnable_status() + if ret == Task.SKIP_ME: + if getattr(Options.options, 'all_tests', False): + return Task.RUN_ME + return ret + + def get_test_env(self): + """ + In general, tests may require any library built anywhere in the project. + Override this method if fewer paths are needed + """ + return self.generator.ut_env + + def post_run(self): + super(utest, self).post_run() + if getattr(Options.options, 'clear_failed_tests', False) and self.waf_unit_test_results[1]: + self.generator.bld.task_sigs[self.uid()] = None + + def run(self): + """ + Execute the test. The execution is always successful, and the results + are stored on ``self.generator.bld.utest_results`` for postprocessing. + + Override ``add_test_results`` to interrupt the build + """ + if hasattr(self.generator, 'ut_run'): + return self.generator.ut_run(self) + + self.ut_exec = getattr(self.generator, 'ut_exec', [self.inputs[0].abspath()]) + ut_cmd = getattr(self.generator, 'ut_cmd', False) + if ut_cmd: + self.ut_exec = shlex.split(ut_cmd % ' '.join(self.ut_exec)) + + return self.exec_command(self.ut_exec) + + def exec_command(self, cmd, **kw): + Logs.debug('runner: %r', cmd) + if getattr(Options.options, 'dump_test_scripts', False): + script_code = SCRIPT_TEMPLATE % { + 'python': sys.executable, + 'env': self.get_test_env(), + 'cwd': self.get_cwd().abspath(), + 'cmd': cmd + } + script_file = self.inputs[0].abspath() + '_run.py' + Utils.writef(script_file, script_code) + os.chmod(script_file, Utils.O755) + if Logs.verbose > 1: + Logs.info('Test debug file written as %r' % script_file) + + proc = Utils.subprocess.Popen(cmd, cwd=self.get_cwd().abspath(), env=self.get_test_env(), + stderr=Utils.subprocess.PIPE, stdout=Utils.subprocess.PIPE, shell=isinstance(cmd,str)) + (stdout, stderr) = proc.communicate() + self.waf_unit_test_results = tup = (self.inputs[0].abspath(), proc.returncode, stdout, stderr) + testlock.acquire() + try: + return self.generator.add_test_results(tup) + finally: + testlock.release() + + def get_cwd(self): + return getattr(self.generator, 'ut_cwd', self.inputs[0].parent) + +def summary(bld): + """ + Display an execution summary:: + + def build(bld): + bld(features='cxx cxxprogram test', source='main.c', target='app') + from waflib.Tools import waf_unit_test + bld.add_post_fun(waf_unit_test.summary) + """ + lst = getattr(bld, 'utest_results', []) + if lst: + Logs.pprint('CYAN', 'execution summary') + + total = len(lst) + tfail = len([x for x in lst if x[1]]) + + Logs.pprint('GREEN', ' tests that pass %d/%d' % (total-tfail, total)) + for (f, code, out, err) in lst: + if not code: + Logs.pprint('GREEN', ' %s' % f) + + Logs.pprint('GREEN' if tfail == 0 else 'RED', ' tests that fail %d/%d' % (tfail, total)) + for (f, code, out, err) in lst: + if code: + Logs.pprint('RED', ' %s' % f) + +def set_exit_code(bld): + """ + If any of the tests fail waf will exit with that exit code. + This is useful if you have an automated build system which need + to report on errors from the tests. + You may use it like this: + + def build(bld): + bld(features='cxx cxxprogram test', source='main.c', target='app') + from waflib.Tools import waf_unit_test + bld.add_post_fun(waf_unit_test.set_exit_code) + """ + lst = getattr(bld, 'utest_results', []) + for (f, code, out, err) in lst: + if code: + msg = [] + if out: + msg.append('stdout:%s%s' % (os.linesep, out.decode('utf-8'))) + if err: + msg.append('stderr:%s%s' % (os.linesep, err.decode('utf-8'))) + bld.fatal(os.linesep.join(msg)) + + +def options(opt): + """ + Provide the ``--alltests``, ``--notests`` and ``--testcmd`` command-line options. + """ + opt.add_option('--notests', action='store_true', default=False, help='Exec no unit tests', dest='no_tests') + opt.add_option('--alltests', action='store_true', default=False, help='Exec all unit tests', dest='all_tests') + opt.add_option('--clear-failed', action='store_true', default=False, + help='Force failed unit tests to run again next time', dest='clear_failed_tests') + opt.add_option('--testcmd', action='store', default=False, dest='testcmd', + help='Run the unit tests using the test-cmd string example "--testcmd="valgrind --error-exitcode=1 %s" to run under valgrind') + opt.add_option('--dump-test-scripts', action='store_true', default=False, + help='Create python scripts to help debug tests', dest='dump_test_scripts') + |