pyqtgraph/examples/test_examples.py

147 lines
4.6 KiB
Python

from __future__ import print_function, division, absolute_import
from pyqtgraph import Qt
from . import utils
from collections import namedtuple
import errno
import importlib
import itertools
import pkgutil
import pytest
import os, sys
import subprocess
import time
path = os.path.abspath(os.path.dirname(__file__))
# printing on travis ci frequently leads to "interrupted system call" errors.
# as a workaround, we overwrite the built-in print function (bleh)
if os.getenv('TRAVIS') is not None:
if sys.version_info[0] < 3:
import __builtin__ as builtins
else:
import builtins
def flaky_print(*args):
"""Wrapper for print that retries in case of IOError.
"""
count = 0
while count < 5:
count += 1
try:
orig_print(*args)
break
except IOError:
if count >= 5:
raise
pass
orig_print = builtins.print
builtins.print = flaky_print
print("Installed wrapper for flaky print.")
files = sorted(set(utils.buildFileList(utils.examples)))
frontends = {Qt.PYQT4: False, Qt.PYQT5: False, Qt.PYSIDE: False, Qt.PYSIDE2: False}
# sort out which of the front ends are available
for frontend in frontends.keys():
try:
importlib.import_module(frontend)
frontends[frontend] = True
except ImportError:
pass
installedFrontends = sorted([frontend for frontend, isPresent in frontends.items() if isPresent])
exceptionCondition = namedtuple("exceptionCondition", ["condition", "reason"])
conditionalExampleTests = {
"hdf5.py": exceptionCondition(False, reason="Example requires user interaction and is not suitable for testing")
}
@pytest.mark.parametrize(
"frontend, f",
[
pytest.param(
frontend,
f,
marks=pytest.mark.skipif(conditionalExampleTests[f[1]].condition is False,
reason=conditionalExampleTests[f[1]].reason) if f[1] in conditionalExampleTests.keys() else (),
)
for frontend, f, in itertools.product(installedFrontends, files)
],
ids = [" {} - {} ".format(f[1], frontend) for frontend, f in itertools.product(installedFrontends, files)]
)
def testExamples(frontend, f, graphicsSystem=None):
# runExampleFile(f[0], f[1], sys.executable, frontend)
name, file = f
global path
fn = os.path.join(path,file)
os.chdir(path)
sys.stdout.write("{} ".format(name))
sys.stdout.flush()
import1 = "import %s" % frontend if frontend != '' else ''
import2 = os.path.splitext(os.path.split(fn)[1])[0]
graphicsSystem = '' if graphicsSystem is None else "pg.QtGui.QApplication.setGraphicsSystem('%s')" % graphicsSystem
code = """
try:
%s
import initExample
import pyqtgraph as pg
%s
import %s
import sys
print("test complete")
sys.stdout.flush()
import time
while True: ## run a little event loop
pg.QtGui.QApplication.processEvents()
time.sleep(0.01)
except:
print("test failed")
raise
""" % (import1, graphicsSystem, import2)
if sys.platform.startswith('win'):
process = subprocess.Popen([sys.executable],
stdin=subprocess.PIPE,
stderr=subprocess.PIPE,
stdout=subprocess.PIPE)
else:
process = subprocess.Popen(['exec %s -i' % (sys.executable)],
shell=True,
stdin=subprocess.PIPE,
stderr=subprocess.PIPE,
stdout=subprocess.PIPE)
process.stdin.write(code.encode('UTF-8'))
process.stdin.close() ##?
output = ''
fail = False
while True:
try:
c = process.stdout.read(1).decode()
except IOError as err:
if err.errno == errno.EINTR:
# Interrupted system call; just try again.
c = ''
else:
raise
output += c
if output.endswith('test complete'):
break
if output.endswith('test failed'):
fail = True
break
time.sleep(1)
process.kill()
#res = process.communicate()
res = (process.stdout.read(), process.stderr.read())
if fail or 'exception' in res[1].decode().lower() or 'error' in res[1].decode().lower():
print(res[0].decode())
print(res[1].decode())
pytest.fail("{}\n{}\nFailed {} Example Test Located in {} ".format(res[0].decode(), res[1].decode(), name, file), pytrace=False)
if __name__ == "__main__":
pytest.cmdline.main()