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import os
import pytest
import tempfile
import runpy
import sys
# Trigger config file reading / creation once - to avoid race conditions when multiple instances are creating it
# at the same time
from pystencils.cpu import cpujit
# trigger cython imports - there seems to be a problem when multiple processes try to compile the same cython file
# at the same time
try:
import pyximport
pyximport.install(language_level=3)
except ImportError:
pass
from lbmpy.phasefield.simplex_projection import simplex_projection_2d # NOQA
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SCRIPT_FOLDER = os.path.dirname(os.path.realpath(__file__))
sys.path.insert(0, os.path.abspath('lbmpy'))
def add_path_to_ignore(path):
if not os.path.exists(path):
return
global collect_ignore
collect_ignore += [os.path.join(SCRIPT_FOLDER, path, f) for f in os.listdir(os.path.join(SCRIPT_FOLDER, path))]
collect_ignore = [os.path.join(SCRIPT_FOLDER, "doc", "conf.py"),
os.path.join(SCRIPT_FOLDER, "doc", "img", "mb_discretization", "maxwell_boltzmann_stencil_plot.py")]
add_path_to_ignore('pystencils_tests/benchmark')
add_path_to_ignore('_local_tmp')
try:
import pycuda
except ImportError:
collect_ignore += [os.path.join(SCRIPT_FOLDER, "lbmpy_tests/test_cpu_gpu_equivalence.py")]
try:
import waLBerla
except ImportError:
collect_ignore += [os.path.join(SCRIPT_FOLDER, "lbmpy_tests/test_serial_scenarios.py")]
collect_ignore += [os.path.join(SCRIPT_FOLDER, "lbmpy_tests/test_datahandling_parallel.py")]
collect_ignore += [os.path.join(SCRIPT_FOLDER, 'setup.py')]
for root, sub_dirs, files in os.walk('.'):
for f in files:
if f.endswith(".ipynb") and not any(f.startswith(k) for k in ['demo', 'tutorial', 'test', 'doc']):
collect_ignore.append(f)
import nbformat
from nbconvert import PythonExporter
class IPythonMockup:
def run_line_magic(self, *args, **kwargs):
pass
def run_cell_magic(self, *args, **kwargs):
pass
def magic(self, *args, **kwargs):
pass
def __bool__(self):
return False
class IPyNbTest(pytest.Item):
def __init__(self, name, parent, code):
super(IPyNbTest, self).__init__(name, parent)
self.code = code
self.add_marker('notebook')
def runtest(self):
global_dict = {'get_ipython': lambda: IPythonMockup(),
'is_test_run': True}
# disable matplotlib output
exec("import matplotlib.pyplot as p; "
"p.switch_backend('Template')", global_dict)
# in notebooks there is an implicit plt.show() - if this is not called a warning is shown when the next
# plot is created. This warning is suppressed here
exec("import warnings;"
"warnings.filterwarnings('ignore', 'Adding an axes using the same arguments as a previous.*')",
global_dict)
with tempfile.NamedTemporaryFile() as f:
f.write(self.code.encode())
f.flush()
runpy.run_path(f.name, init_globals=global_dict, run_name=self.name)
class IPyNbFile(pytest.File):
def collect(self):
exporter = PythonExporter()
exporter.exclude_markdown = True
exporter.exclude_input_prompt = True
notebook_contents = self.fspath.open()
notebook = nbformat.read(notebook_contents, 4)
code, _ = exporter.from_notebook_node(notebook)
yield IPyNbTest(self.name, self, code)
def teardown(self):
pass
def pytest_collect_file(path, parent):
glob_exprs = ["*demo*.ipynb", "*tutorial*.ipynb", "test_*.ipynb"]
if any(path.fnmatch(g) for g in glob_exprs):
return IPyNbFile(path, parent)