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import os
import shutil
import sys
import time
import pytest
import pyqtgraph as pg
pgpath = os.path.join(os.path.dirname(pg.__file__), '..')
pgpath_repr = repr(pgpath)
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.QtVersion.startswith("5.15"))
or (pg.Qt.QT_LIB == "PySide6")
) and (sys.version_info >= (3, 9)),
reason="Unknown Issue"
)
@pytest.mark.usefixtures("tmp_module")
def test_reload(tmp_module):
# write a module
mod = os.path.join(tmp_module, 'reload_test_mod.py')
print("\nRELOAD FILE:", mod)
with open(mod, "w") as file_:
file_.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)
v1 = (reload_test_mod.C, reload_test_mod.C.sig, reload_test_mod.C.fn, c.sig, c.fn, c.fn.__func__)
# write again and reload
with open(mod, "w") as file_:
file_.write(code.format(path_repr=pgpath_repr, msg="C.fn() Version 2"))
time.sleep(1.1)
#remove_cache(mod)
_ = pg.reload.reloadAll(tmp_module, debug=True)
v2 = (reload_test_mod.C, reload_test_mod.C.sig, reload_test_mod.C.fn, c.sig, c.fn, c.fn.__func__)
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.)")
assert oldcfn.__func__ is v1[2]
assert oldcfn.__self__ is c
# write again and reload
with open(mod, "w") as file_:
file_.write(code.format(path_repr=pgpath_repr, msg="C.fn() Version2"))
time.sleep(1.1)
# remove_cache(mod)
_ = pg.reload.reloadAll(tmp_module, debug=True)
_ = (reload_test_mod.C, reload_test_mod.C.sig, reload_test_mod.C.fn, c.sig, c.fn, c.fn.__func__)
cfn1 = pg.reload.getPreviousVersion(c.fn)
cfn2 = pg.reload.getPreviousVersion(cfn1)
assert cfn1.__func__ is v2[2]
assert cfn2.__func__ is v1[2]
assert cfn1.__self__ is c
assert cfn2.__self__ is c
pg.functions.disconnect(c.sig, c.fn)
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