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#!/usr/bin/env python
import os
import sys
import yaml
import unittest
import re
import time
import logging
from subprocess import Popen, PIPE, STDOUT
from usrp_probe import get_usrp_list
#--------------------------------------------------------------------------
# Application
#--------------------------------------------------------------------------
class shell_application(object):
"""
Wrapper for applications that are in $PATH.
Note: The CMake infrastructure makes sure all examples and utils are in $PATH.
"""
def __init__(self, name):
self.name = name
self.stdout = ''
self.stderr = ''
self.returncode = None
self.exec_time = None
def run(self, args = []):
cmd_line = [self.name]
cmd_line.extend(args)
start_time = time.time()
p = Popen(cmd_line, stdout=PIPE, stderr=PIPE, close_fds=True)
self.stdout, self.stderr = p.communicate()
self.returncode = p.returncode
self.exec_time = time.time() - start_time
#--------------------------------------------------------------------------
# Test case base
#--------------------------------------------------------------------------
class uhd_test_case(unittest.TestCase):
"""
Base class for UHD test cases.
"""
test_name = '--TEST--'
def set_up(self):
"""
Override this to add own setup code per test.
"""
pass
def setUp(self):
self.name = self.__class__.__name__
self.test_id = self.id().split('.')[-1]
self.results = {}
self.results_file = os.getenv('_UHD_TEST_RESULTSFILE', "")
if self.results_file and os.path.isfile(self.results_file):
self.results = yaml.safe_load(open(self.results_file).read()) or {}
self.args_str = os.getenv('_UHD_TEST_ARGS_STR', "")
self.usrp_info = get_usrp_list(self.args_str)[0]
if not self.results.has_key(self.usrp_info['serial']):
self.results[self.usrp_info['serial']] = {}
if not self.results[self.usrp_info['serial']].has_key(self.name):
self.results[self.usrp_info['serial']][self.name] = {}
self.setup_logger()
self.set_up()
def setup_logger(self):
" Add logging infrastructure "
self.log = logging.getLogger("devtest.{name}".format(name=self.name))
self.log_file = os.getenv('_UHD_TEST_LOGFILE', "devtest.log")
#self.log_level = int(os.getenv('_UHD_TEST_LOG_LEVEL', logging.DEBUG))
#self.print_level = int(os.getenv('_UHD_TEST_PRINT_LEVEL', logging.WARNING))
self.log_level = logging.DEBUG
self.print_level = logging.WARNING
file_handler = logging.FileHandler(self.log_file)
file_handler.setLevel(self.log_level)
console_handler = logging.StreamHandler()
console_handler.setLevel(self.print_level)
formatter = logging.Formatter('%(asctime)s - %(name)s - %(levelname)s - %(message)s')
file_handler.setFormatter(formatter)
console_handler.setFormatter(formatter)
self.log.setLevel(logging.DEBUG)
self.log.addHandler(file_handler)
self.log.addHandler(console_handler)
self.log.info("Starting test with device: {dev}".format(dev=self.args_str))
def tear_down(self):
pass
def tearDown(self):
self.tear_down()
if self.results_file:
open(self.results_file, 'w').write(yaml.dump(self.results, default_flow_style=False))
def report_result(self, testname, key, value):
""" Store a result as a key/value pair.
After completion, all results for one test are written to the results file.
"""
if not self.results[self.usrp_info['serial']][self.name].has_key(testname):
self.results[self.usrp_info['serial']][self.name][testname] = {}
self.results[self.usrp_info['serial']][self.name][testname][key] = value
def create_addr_args_str(self, argname="args"):
""" Returns an args string, usually '--args "type=XXX,serial=YYY" """
if len(self.args_str) == 0:
return ''
return '--{}={}'.format(argname, self.args_str)
def filter_warnings(self, errstr):
""" Searches errstr for UHD warnings, removes them, and puts them into a separate string.
Returns (errstr, warnstr), where errstr no longer has warning. """
warn_re = re.compile("UHD Warning:\n(?: .*\n)+")
warnstr = "\n".join(warn_re.findall(errstr)).strip()
errstr = warn_re.sub('', errstr).strip()
return (errstr, warnstr)
def filter_stderr(self, stderr, run_results={}):
""" Filters the output to stderr. run_results[] is a dictionary.
This function will:
- Remove UUUUU... strings, since they are generally not a problem.
- Remove all DDDD and SSSS strings, and add run_results['has_S'] = True
and run_results['has_D'] = True.
- Remove warnings and put them in run_results['warnings']
- Put the filtered error string into run_results['errors'] and returns the dictionary
"""
errstr, run_results['warnings'] = self.filter_warnings(stderr)
# Scan for underruns and sequence errors / dropped packets not detected in the counter
errstr = re.sub('UU+', '', errstr)
(errstr, n_subs) = re.subn('SS+', '', errstr)
if n_subs:
run_results['has_S'] = True
(errstr, n_subs) = re.subn('DD+', '', errstr)
if n_subs:
run_results['has_D'] = True
errstr = re.sub("\n\n+", "\n", errstr)
run_results['errors'] = errstr.strip()
return run_results
class uhd_example_test_case(uhd_test_case):
"""
A test case that runs an example.
"""
def setup_example(self):
"""
Override this to add specific setup code.
"""
pass
def set_up(self):
"""
"""
self.setup_example()
def run_test(self, test_name, test_args):
"""
Override this to run the actual example.
Needs to return either a boolean or a dict with key 'passed' to determine
pass/fail.
"""
raise NotImplementedError
def run_example(self, example, args):
"""
Run `example' (which has to be a UHD example or utility) with `args'.
Return results and the app object.
"""
self.log.info("Running example: `{example} {args}'".format(example=example, args=" ".join(args)))
app = shell_application(example)
app.run(args)
run_results = {
'return_code': app.returncode,
'passed': False,
'has_D': False,
'has_S': False,
}
run_results = self.filter_stderr(app.stderr, run_results)
self.log.info('STDERR Output:')
self.log.info(str(app.stderr))
return (app, run_results)
def report_example_results(self, test_name, run_results):
for key in sorted(run_results):
self.log.info('{key} = {val}'.format(key=key, val=run_results[key]))
self.report_result(
test_name,
key, run_results[key]
)
if run_results.has_key('passed'):
self.report_result(
test_name,
'status',
'Passed' if run_results['passed'] else 'Failed',
)
if run_results.has_key('errors'):
self.report_result(
test_name,
'errors',
'Yes' if run_results['errors'] else 'No',
)
def test_all(self):
"""
Hook for test runner. Needs to be a class method that starts with 'test'.
Calls run_test().
"""
for test_name, test_args in self.test_params.iteritems():
if not test_args.has_key('products') or (self.usrp_info['product'] in test_args.get('products', [])):
run_results = self.run_test(test_name, test_args)
passed = bool(run_results)
if isinstance(run_results, dict):
passed = run_results['passed']
self.assertTrue(
passed,
msg="Errors occurred during test `{t}'. Check log file for details.\nRun results:\n{r}".format(
t=test_name, r=yaml.dump(run_results, default_flow_style=False)
)
)
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