TST: add test to check for correct version string format.

Implements idea suggested in gh-6431.

1 files changed, 23 insertions, 0 deletions

diff --git a/numpy/tests/test_numpy_version.py b/numpy/tests/test_numpy_version.py
new file mode 100644
index 000000000..68d1508ce
--- /dev/null
+++ b/numpy/tests/test_numpy_version.py
@@ -0,0 +1,23 @@
+from __future__ import division, absolute_import, print_function
+
+import re
+
+import numpy as np
+from numpy.testing import assert_, run_module_suite
+
+
+def test_valid_numpy_version():
+    # Verify that the numpy version is a valid one (no .post suffix or other
+    # nonsense).  See gh-6431 for an issue caused by an invalid version.
+    version_pattern = "^[0-9]+\.[0-9]+\.[0-9]+(|a[0-9]|b[0-9]|rc[0-9])"
+    dev_suffix = "+(\.dev0\+([0-9a-f]{7}|Unknown))"
+    if np.version.release:
+        res = re.match(version_pattern + "?$", np.__version__)
+    else:
+        res = re.match(version_pattern + dev_suffix + "?$", np.__version__)
+
+    assert_(res is not None, np.__version__)
+
+
+if __name__ == "__main__":
+    run_module_suite()