def test_remember_rewritten_modules(self, pytestconfig, testdir, monkeypatch):
"""
AssertionRewriteHook should remember rewritten modules so it
doesn't give false positives (#2005).
"""
monkeypatch.syspath_prepend(testdir.tmpdir)
testdir.makepyfile(test_remember_rewritten_modules='')
warnings = []
hook = AssertionRewritingHook(pytestconfig)
monkeypatch.setattr(hook.config, 'warn', lambda code, msg: warnings.append(msg))
hook.find_module('test_remember_rewritten_modules')
hook.load_module('test_remember_rewritten_modules')
hook.mark_rewrite('test_remember_rewritten_modules')
hook.mark_rewrite('test_remember_rewritten_modules')
assert warnings == []
def test_remember_rewritten_modules(self, pytestconfig, testdir, monkeypatch):
"""
AssertionRewriteHook should remember rewritten modules so it
doesn't give false positives (#2005).
"""
monkeypatch.syspath_prepend(testdir.tmpdir)
testdir.makepyfile(test_remember_rewritten_modules='')
warnings = []
hook = AssertionRewritingHook(pytestconfig)
monkeypatch.setattr(hook.config, 'warn', lambda code, msg: warnings.append(msg))
hook.find_module('test_remember_rewritten_modules')
hook.load_module('test_remember_rewritten_modules')
hook.mark_rewrite('test_remember_rewritten_modules')
hook.mark_rewrite('test_remember_rewritten_modules')
assert warnings == []
def test_rewrite_infinite_recursion(testdir, pytestconfig, monkeypatch):
"""Fix infinite recursion when writing pyc files: if an import happens to be triggered when writing the pyc
file, this would cause another call to the hook, which would trigger another pyc writing, which could
trigger another import, and so on. (#3506)"""
from _pytest.assertion import rewrite
testdir.syspathinsert()
testdir.makepyfile(test_foo="def test_foo(): pass")
testdir.makepyfile(test_bar="def test_bar(): pass")
original_write_pyc = rewrite._write_pyc
write_pyc_called = []
def spy_write_pyc(*args, **kwargs):
# make a note that we have called _write_pyc
write_pyc_called.append(True)
# try to import a module at this point: we should not try to rewrite this module
assert hook.find_module("test_bar") is None
return original_write_pyc(*args, **kwargs)
monkeypatch.setattr(rewrite, "_write_pyc", spy_write_pyc)
monkeypatch.setattr(sys, "dont_write_bytecode", False)
hook = AssertionRewritingHook(pytestconfig)
assert hook.find_module("test_foo") is not None
assert len(write_pyc_called) == 1
def test_rewrite_infinite_recursion(testdir, pytestconfig, monkeypatch):
"""Fix infinite recursion when writing pyc files: if an import happens to be triggered when writing the pyc
file, this would cause another call to the hook, which would trigger another pyc writing, which could
trigger another import, and so on. (#3506)"""
from _pytest.assertion import rewrite
testdir.syspathinsert()
testdir.makepyfile(test_foo="def test_foo(): pass")
testdir.makepyfile(test_bar="def test_bar(): pass")
original_write_pyc = rewrite._write_pyc
write_pyc_called = []
def spy_write_pyc(*args, **kwargs):
# make a note that we have called _write_pyc
write_pyc_called.append(True)
# try to import a module at this point: we should not try to rewrite this module
assert hook.find_module("test_bar") is None
return original_write_pyc(*args, **kwargs)
monkeypatch.setattr(rewrite, "_write_pyc", spy_write_pyc)
monkeypatch.setattr(sys, "dont_write_bytecode", False)
hook = AssertionRewritingHook(pytestconfig)
assert hook.find_module("test_foo") is not None
assert len(write_pyc_called) == 1
