pyqtgraph/examples/test_examples.py

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from collections import namedtuple
from pyqtgraph import Qt
import errno
import time
import importlib
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import itertools
import pytest
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import os, sys
import platform
import subprocess
from argparse import Namespace
if __name__ == "__main__" and (__package__ is None or __package__==''):
parent_dir = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
sys.path.insert(0, parent_dir)
import examples
__package__ = "examples"
from . import utils
def buildFileList(examples, files=None):
if files is None:
files = []
for key, val in examples.items():
if isinstance(val, dict):
buildFileList(val, files)
elif isinstance(val, Namespace):
files.append((key, val.filename))
else:
files.append((key, val))
return files
path = os.path.abspath(os.path.dirname(__file__))
files = [("Example App", "RunExampleApp.py")]
for ex in [utils.examples_, utils.others]:
files = buildFileList(ex, files)
files = sorted(set(files))
frontends = {
Qt.PYQT5: False,
Qt.PYQT6: False,
Qt.PYSIDE2: False,
Qt.PYSIDE6: 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
])
darwin_opengl_broken = (platform.system() == "Darwin" and
tuple(map(int, platform.mac_ver()[0].split("."))) >= (10, 16) and
sys.version_info < (3, 9, 1))
darwin_opengl_reason = ("pyopenGL cannot find openGL library on big sur: "
"https://github.com/python/cpython/pull/21241")
exceptionCondition = namedtuple("exceptionCondition", ["condition", "reason"])
conditionalExamples = {
"hdf5.py": exceptionCondition(
False,
reason="Example requires user interaction"
),
"RemoteSpeedTest.py": exceptionCondition(
False,
reason="Test is being problematic on CI machines"
),
}
openglExamples = ['GLViewWidget.py']
openglExamples.extend(utils.examples_['3D Graphics'].values())
for key in openglExamples:
conditionalExamples[key] = exceptionCondition(
not darwin_opengl_broken,
reason=darwin_opengl_reason
)
@pytest.mark.skipif(
Qt.QT_LIB == "PySide2"
and tuple(map(int, Qt.PySide2.__version__.split("."))) >= (5, 14)
and tuple(map(int, Qt.PySide2.__version__.split("."))) < (5, 14, 2, 2),
reason="new PySide2 doesn't have loadUi functionality"
)
@pytest.mark.parametrize(
"frontend, f",
[
pytest.param(
frontend,
f,
marks=pytest.mark.skipif(
conditionalExamples[f[1]].condition is False,
reason=conditionalExamples[f[1]].reason
) if f[1] in conditionalExamples.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):
name, file = f
global path
fn = os.path.join(path, file)
os.chdir(path)
sys.stdout.write(f"{name}")
sys.stdout.flush()
import1 = "import %s" % frontend if frontend != '' else ''
import2 = os.path.splitext(os.path.split(fn)[1])[0]
code = """
try:
{0}
import initExample
import pyqtgraph as pg
import {1}
import sys
print("test complete")
sys.stdout.flush()
pg.Qt.QtCore.QTimer.singleShot(1000, pg.Qt.QtWidgets.QApplication.quit)
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pg.exec()
names = [x for x in dir({1}) if not x.startswith('_')]
for name in names:
delattr({1}, name)
except:
print("test failed")
raise
""".format(import1, import2)
process = subprocess.Popen([sys.executable],
stdin=subprocess.PIPE,
stderr=subprocess.PIPE,
stdout=subprocess.PIPE,
text=True)
process.stdin.write(code)
process.stdin.close()
output = ''
fail = False
while True:
try:
c = process.stdout.read(1)
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
start = time.time()
killed = False
while process.poll() is None:
time.sleep(0.1)
if time.time() - start > 2.0 and not killed:
process.kill()
killed = True
stdout, stderr = (process.stdout.read(), process.stderr.read())
process.stdout.close()
process.stderr.close()
if (fail or
'Exception:' in stderr or
'Error:' in stderr):
if (not fail
and name == "RemoteGraphicsView"
and "pyqtgraph.multiprocess.remoteproxy.ClosedError" in stderr):
# This test can intermittently fail when the subprocess is killed
return None
print(stdout)
print(stderr)
pytest.fail(
f"{stdout}\n{stderr}\nFailed {name} Example Test Located in {file}",
pytrace=False
)
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if __name__ == "__main__":
pytest.cmdline.main()