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Try specifying timeout in pexpect.spawn() + adjust error msg

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Unfortunately pexpect() seems to be timing out with a 30 second
timeout rather than the 600 seconds we are passing in. How
could this even be working normally? It is puzzling. We are
going to try specifying the timeout in the spawn() call.

Also if the test fails, we use %e format for readability.
This commit is contained in:
Bob Lantz
2016-08-29 23:57:17 -07:00
parent b2e1907c3a
commit e893fc9da4
1 changed files with 3 additions and 3 deletions
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examples/test/test_cpu.py
+3 -3
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@@ -25,13 +25,13 @@ class testCPU( unittest.TestCase ):
@unittest.skipIf( '-quick' in sys.argv, 'long test' ) @unittest.skipIf( '-quick' in sys.argv, 'long test' )
def testCPU( self ): def testCPU( self ):
"Verify that CPU utilization is monotonically decreasing for each scheduler" "Verify that CPU utilization is monotonically decreasing for each scheduler"
p = pexpect.spawn( 'python -m mininet.examples.cpu' ) p = pexpect.spawn( 'python -m mininet.examples.cpu', timeout=300 )
# matches each line from results( shown above ) # matches each line from results( shown above )
opts = [ '([a-z]+)\t([\d\.]+)%\t([\d\.e\+]+)', opts = [ '([a-z]+)\t([\d\.]+)%\t([\d\.e\+]+)',
pexpect.EOF ] pexpect.EOF ]
scheds = [] scheds = []
while True: while True:
index = p.expect( opts, timeout=600 ) index = p.expect( opts )
if index == 0: if index == 0:
sched = p.match.group( 1 ) sched = p.match.group( 1 )
cpu = float( p.match.group( 2 ) ) cpu = float( p.match.group( 2 ) )
@@ -40,7 +40,7 @@ class testCPU( unittest.TestCase ):
scheds.append( sched ) scheds.append( sched )
else: else:
self.assertTrue( bw < previous_bw, self.assertTrue( bw < previous_bw,
"%f should be less than %f\n" % "%e should be less than %e\n" %
( bw, previous_bw ) ) ( bw, previous_bw ) )
previous_bw = bw previous_bw = bw
else: else: