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from cStringIO import StringIO
from pypy.config.support import detect_number_of_processors
import os, sys, py
cpuinfo = """
processor\t: 0
processor\t: 1
vendor_id\t: GenuineIntel
cpu family\t: 6
model\t\t: 37
model name\t: Intel(R) Core(TM) i7 CPU L 620 @ 2.00GHz
stepping\t: 2
processor\t: 2
vendor_id\t: GenuineIntel
cpu family\t: 6
model\t\t: 37
model name\t: Intel(R) Core(TM) i7 CPU L 620 @ 2.00GHz
stepping\t: 2
processor\t: 3
vendor_id\t: GenuineIntel
cpu family\t: 6
model\t\t: 37
model name\t: Intel(R) Core(TM) i7 CPU L 620 @ 2.00GHz
stepping\t: 2
cpu MHz\t\t: 1199.000
cache size\t: 4096 KB
physical id\t: 0
siblings\t: 4
"""
class FakeEnviron:
def __init__(self, value):
self._value = value
def get(self, varname):
assert varname == 'MAKEFLAGS'
return self._value
def test_cpuinfo():
if sys.platform != 'linux2':
py.test.skip("linux only")
saved = os.environ
try:
os.environ = FakeEnviron(None)
assert detect_number_of_processors(StringIO(cpuinfo)) == 3
assert detect_number_of_processors('random crap that does not exist') == 1
os.environ = FakeEnviron('-j2')
assert detect_number_of_processors(StringIO(cpuinfo)) == 1
finally:
os.environ = saved
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