Performance Monitor tests fail on OSX

[Lars Butler]

These tests will pass on Linux, but fail on OSX:

======================================================================
FAIL: test_engine_performance_monitor (tests.performance_monitor_test.TestCase)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/Users/larsbutler/proj/oq-engine/tests/performance_monitor_test.py", line 40, in test_engine_performance_monitor
    self._check_result(pmon, nproc=2)
  File "/Users/larsbutler/proj/oq-engine/tests/performance_monitor_test.py", line 22, in _check_result
    self.assertEqual(nproc, len(pmon.mem))
AssertionError: 2 != 1

======================================================================
FAIL: test_engine_performance_monitor_no_task (tests.performance_monitor_test.TestCase)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/Users/larsbutler/proj/oq-engine/tests/performance_monitor_test.py", line 51, in test_engine_performance_monitor_no_task
    self._check_result(pmon, nproc=2)
  File "/Users/larsbutler/proj/oq-engine/tests/performance_monitor_test.py", line 22, in _check_result
    self.assertEqual(nproc, len(pmon.mem))
AssertionError: 2 != 1

The problem is that, by default, a non-superuser does not have permission to read the proc file for postgres, and thus, the performance monitor doesn't track both expected processes (1. the python process and 2. the postgres process).

It would be nice if we can get this to work on OSX as well while still maintaining good tests.

[Michele Simionato (michele-simionato)]

Fixed in https://github.com/gem/oq-engine/pull/1170