Fix #627: require at least 2 cpus for TestConcurrentShared

Anything less, and the tests will run serially and fail the test.

1 files changed, 5 insertions, 0 deletions

diff --git a/functional_tests/test_multiprocessing/test_concurrent_shared.py b/functional_tests/test_multiprocessing/test_concurrent_shared.py
index 517da99..d0318ff 100644
--- a/functional_tests/test_multiprocessing/test_concurrent_shared.py
+++ b/functional_tests/test_multiprocessing/test_concurrent_shared.py
@@ -2,6 +2,7 @@ import os
 import sys
 import unittest
 
+import multiprocessing
 from test_multiprocessing import MPTestBase
 
 
@@ -21,6 +22,10 @@ class TestConcurrentShared(MPTestBase):
         # capturing.
         MPTestBase.setUp(self)
 
+        if multiprocessing.cpu_count() < 2:
+            raise unittest.SkipTest(
+                    "At least 2 cpus required for this test; skipping")
+
     def runTest(self):
         assert 'Ran 2 tests in 1.' in self.output, "make sure two tests use 1.x seconds (no more than 2 seconds)"
         assert str(self.output).strip().endswith('OK')