circuitpython/tests/skip_if.py

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# The MIT License (MIT)
#
# Copyright (c) 2017 Scott Shawcroft for Adafruit Industries
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
# This must be on one line so its skipped when built into tests.
"""This file provides helpers to detect particular running conditions and skip the test when appropriate."""
def skip():
print("SKIP")
raise SystemExit
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def always():
skip()
def no_reversed():
import builtins
if "reversed" not in dir(builtins):
skip()
def no_bigint():
try:
# We have to use variables because 1 << 40 causes an exception on parse and
# cannot be caught.
x = 40
x = 1 << x
except OverflowError:
skip()
def board_in(*board):
try:
import test_env
except ImportError:
class Env:
def __init__(self, board):
self.board = board
test_env = Env("unknown")
if test_env.board in board:
skip()
def board_not_in(*board):
try:
import test_env
except ImportError:
class Env:
def __init__(self, board):
self.board = board
test_env = Env("unknown")
if test_env.board not in board:
skip()
def no_cpython_compat():
try:
from collections import namedtuple
except ImportError:
skip()
try:
T3 = namedtuple("TupComma", "foo bar")
except TypeError:
skip()
def no_slice_assign():
try:
memoryview
except:
skip()
b1 = bytearray(b'1234')
b2 = bytearray(b'5678')
m1 = memoryview(b1)
m2 = memoryview(b2)
try:
m2[1:3] = m1[0:2]
except TypeError:
skip()
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def no_reverse_ops():
class Foo:
def __radd__(self, other):
pass
try:
5 + Foo()
except TypeError:
skip()