pyqtgraph/pyqtgraph/tests/test_reload.py
2020-12-22 10:26:19 -08:00

124 lines
3.7 KiB
Python

import tempfile, os, sys, shutil, time
import pyqtgraph as pg
import pyqtgraph.reload
import pytest
pgpath = os.path.join(os.path.dirname(pg.__file__), '..')
pgpath_repr = repr(pgpath)
# make temporary directory to write module code
path = None
def setup_module():
# make temporary directory to write module code
global path
path = tempfile.mkdtemp()
sys.path.insert(0, path)
def teardown_module():
global path
shutil.rmtree(path)
sys.path.remove(path)
code = """
import sys
sys.path.append({path_repr})
import pyqtgraph as pg
class C(pg.QtCore.QObject):
sig = pg.QtCore.Signal()
def fn(self):
print("{msg}")
"""
def remove_cache(mod):
if os.path.isfile(mod+'c'):
os.remove(mod+'c')
cachedir = os.path.join(os.path.dirname(mod), '__pycache__')
if os.path.isdir(cachedir):
shutil.rmtree(cachedir)
@pytest.mark.skipif(
pg.Qt.QT_LIB == "PySide2"
and pg.Qt.PySide2.__version__.startswith("5.15")
and sys.version_info > (3, 9),
reason="Unknown Issue")
def test_reload():
py3 = sys.version_info >= (3,)
# write a module
mod = os.path.join(path, 'reload_test_mod.py')
print("\nRELOAD FILE:", mod)
open(mod, 'w').write(code.format(path_repr=pgpath_repr, msg="C.fn() Version1"))
# import the new module
import reload_test_mod
print("RELOAD MOD:", reload_test_mod.__file__)
c = reload_test_mod.C()
c.sig.connect(c.fn)
if py3:
v1 = (reload_test_mod.C, reload_test_mod.C.sig, reload_test_mod.C.fn, c.sig, c.fn, c.fn.__func__)
else:
v1 = (reload_test_mod.C, reload_test_mod.C.sig, reload_test_mod.C.fn, reload_test_mod.C.fn.__func__, c.sig, c.fn, c.fn.__func__)
# write again and reload
open(mod, 'w').write(code.format(path_repr=pgpath_repr, msg="C.fn() Version2"))
time.sleep(1.1)
#remove_cache(mod)
result1 = pg.reload.reloadAll(path, debug=True)
if py3:
v2 = (reload_test_mod.C, reload_test_mod.C.sig, reload_test_mod.C.fn, c.sig, c.fn, c.fn.__func__)
else:
v2 = (reload_test_mod.C, reload_test_mod.C.sig, reload_test_mod.C.fn, reload_test_mod.C.fn.__func__, c.sig, c.fn, c.fn.__func__)
if not py3:
assert c.fn.im_class is v2[0]
oldcfn = pg.reload.getPreviousVersion(c.fn)
if oldcfn is None:
# Function did not reload; are we using pytest's assertion rewriting?
raise Exception("Function did not reload. (This can happen when using py.test"
" with assertion rewriting; use --assert=plain for this test.)")
if py3:
assert oldcfn.__func__ is v1[2]
else:
assert oldcfn.im_class is v1[0]
assert oldcfn.__func__ is v1[2].__func__
assert oldcfn.__self__ is c
# write again and reload
open(mod, 'w').write(code.format(path_repr=pgpath_repr, msg="C.fn() Version2"))
time.sleep(1.1)
# remove_cache(mod)
result2 = pg.reload.reloadAll(path, debug=True)
if py3:
v3 = (reload_test_mod.C, reload_test_mod.C.sig, reload_test_mod.C.fn, c.sig, c.fn, c.fn.__func__)
else:
v3 = (reload_test_mod.C, reload_test_mod.C.sig, reload_test_mod.C.fn, reload_test_mod.C.fn.__func__, c.sig, c.fn, c.fn.__func__)
#for i in range(len(old)):
#print id(old[i]), id(new1[i]), id(new2[i]), old[i], new1[i]
cfn1 = pg.reload.getPreviousVersion(c.fn)
cfn2 = pg.reload.getPreviousVersion(cfn1)
if py3:
assert cfn1.__func__ is v2[2]
assert cfn2.__func__ is v1[2]
else:
assert cfn1.__func__ is v2[2].__func__
assert cfn2.__func__ is v1[2].__func__
assert cfn1.im_class is v2[0]
assert cfn2.im_class is v1[0]
assert cfn1.__self__ is c
assert cfn2.__self__ is c
pg.functions.disconnect(c.sig, c.fn)