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"""Supporting definitions for the Python regression test."""
class Error(Exception):
"""Base class for regression test exceptions."""
class TestFailed(Error):
"""Test failed."""
class TestSkipped(Error):
"""Test skipped.
This can be raised to indicate that a test was deliberatly
skipped, but not because a feature wasn't available. For
example, if some resource can't be used, such as the network
appears to be unavailable, this should be raised instead of
TestFailed.
"""
verbose = 1 # Flag set to 0 by regrtest.py
use_large_resources = 1 # Flag set to 0 by regrtest.py
def unload(name):
import sys
try:
del sys.modules[name]
except KeyError:
pass
def forget(modname):
unload(modname)
import sys, os
for dirname in sys.path:
try:
os.unlink(os.path.join(dirname, modname + '.pyc'))
except os.error:
pass
FUZZ = 1e-6
def fcmp(x, y): # fuzzy comparison function
if type(x) == type(0.0) or type(y) == type(0.0):
try:
x, y = coerce(x, y)
fuzz = (abs(x) + abs(y)) * FUZZ
if abs(x-y) <= fuzz:
return 0
except:
pass
elif type(x) == type(y) and type(x) in (type(()), type([])):
for i in range(min(len(x), len(y))):
outcome = fcmp(x[i], y[i])
if outcome != 0:
return outcome
return cmp(len(x), len(y))
return cmp(x, y)
TESTFN = '@test' # Filename used for testing
from os import unlink
def findfile(file, here=__file__):
import os
if os.path.isabs(file):
return file
import sys
path = sys.path
path = [os.path.dirname(here)] + path
for dn in path:
fn = os.path.join(dn, file)
if os.path.exists(fn): return fn
return file
def verify(condition, reason='test failed'):
"""Verify that condition is true. If not, raise an AssertionError.
The optinal argument reason can be given to provide
a better error text.
"""
if not condition:
raise AssertionError(reason)
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