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# Tests proper handling of lextab and parsetab files in package structures
# Check of warning messages when files aren't writable
# Here for testing purposes
import sys
if '..' not in sys.path:
sys.path.insert(0, '..')
import ply.lex
import ply.yacc
def patched_open(filename, mode):
if 'w' in mode:
raise IOError("Permission denied %r" % filename)
return open(filename, mode)
ply.lex.open = patched_open
ply.yacc.open = patched_open
try:
from .parsing.calcparse import parser
finally:
del ply.lex.open
del ply.yacc.open
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