Viewing file:  test_import.py (2.87 KB) -rw-r--r--
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from test.test_support import TESTFN, TestFailed
import os
import random
import sys
import py_compile
# Brief digression to test that import is case-sensitive: if we got this
# far, we know for sure that "random" exists.
try:
import RAnDoM
except ImportError:
pass
else:
raise TestFailed("import of RAnDoM should have failed (case mismatch)")
# Another brief digression to test the accuracy of manifest float constants.
import double_const # don't blink -- that *was* the test
def test_with_extension(ext): # ext normally ".py"; perhaps ".pyw"
source = TESTFN + ext
pyo = TESTFN + os.extsep + "pyo"
if sys.platform.startswith('java'):
pyc = TESTFN + "$py.class"
else:
pyc = TESTFN + os.extsep + "pyc"
f = open(source, "w")
print >> f, "# This tests Python's ability to import a", ext, "file."
a = random.randrange(1000)
b = random.randrange(1000)
print >> f, "a =", a
print >> f, "b =", b
f.close()
try:
try:
mod = __import__(TESTFN)
except ImportError, err:
raise ValueError("import from %s failed: %s" % (ext, err))
if mod.a != a or mod.b != b:
print a, "!=", mod.a
print b, "!=", mod.b
raise ValueError("module loaded (%s) but contents invalid" % mod)
finally:
os.unlink(source)
try:
try:
reload(mod)
except ImportError, err:
raise ValueError("import from .pyc/.pyo failed: %s" % err)
finally:
try:
os.unlink(pyc)
except os.error:
pass
try:
os.unlink(pyo)
except os.error:
pass
del sys.modules[TESTFN]
sys.path.insert(0, os.curdir)
try:
test_with_extension(os.extsep + "py")
if sys.platform.startswith("win"):
for ext in ".PY", ".Py", ".pY", ".pyw", ".PYW", ".pYw":
test_with_extension(ext)
finally:
del sys.path[0]
# Verify that the imp module can correctly load and find .py files
import imp
x = imp.find_module("os")
os = imp.load_module("os", *x)
def test_module_with_large_stack(module):
# create module w/list of 65000 elements to test bug #561858
filename = module + os.extsep + 'py'
# create a file with a list of 65000 elements
f = open(filename, 'w+')
f.write('d = [\n')
for i in range(65000):
f.write('"",\n')
f.write(']')
f.close()
# compile & remove .py file, we only need .pyc (or .pyo)
f = open(filename, 'r')
py_compile.compile(filename)
f.close()
os.unlink(filename)
# need to be able to load from current dir
sys.path.append('')
# this used to crash
exec 'import ' + module
# cleanup
del sys.path[-1]
for ext in 'pyc', 'pyo':
fname = module + os.extsep + ext
if os.path.exists(fname):
os.unlink(fname)
test_module_with_large_stack('longlist')
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