Merge pull request #15338 from mattip/site.cfg

DOC: document site.cfg.example

1 files changed, 33 insertions, 1 deletions

diff --git a/numpy/distutils/tests/test_system_info.py b/numpy/distutils/tests/test_system_info.py
index c40cdb7db..0768ffdde 100644
--- a/numpy/distutils/tests/test_system_info.py
+++ b/numpy/distutils/tests/test_system_info.py
@@ -7,7 +7,7 @@ from distutils.errors import DistutilsError
 
 from numpy.testing import assert_, assert_equal, assert_raises
 from numpy.distutils import ccompiler, customized_ccompiler
-from numpy.distutils.system_info import system_info, ConfigParser
+from numpy.distutils.system_info import system_info, ConfigParser, mkl_info
 from numpy.distutils.system_info import AliasedOptionError
 from numpy.distutils.system_info import default_lib_dirs, default_include_dirs
 from numpy.distutils import _shell_utils
@@ -253,3 +253,35 @@ class TestSystemInfoReading:
             assert_(os.path.isfile(self._src2.replace('.c', '.o')))
         finally:
             os.chdir(previousDir)
+
+    def test_overrides(self):
+        previousDir = os.getcwd()
+        cfg = os.path.join(self._dir1, 'site.cfg')
+        shutil.copy(self._sitecfg, cfg)
+        try:
+            os.chdir(self._dir1)
+            # Check that the '[ALL]' section does not override
+            # missing values from other sections
+            info = mkl_info()
+            lib_dirs = info.cp['ALL']['library_dirs'].split(os.pathsep)
+            assert info.get_lib_dirs() != lib_dirs
+
+            # But if we copy the values to a '[mkl]' section the value
+            # is correct
+            with open(cfg, 'r') as fid:
+                mkl = fid.read().replace('ALL', 'mkl')
+            with open(cfg, 'w') as fid:
+                fid.write(mkl)
+            info = mkl_info()
+            assert info.get_lib_dirs() == lib_dirs
+
+            # Also, the values will be taken from a section named '[DEFAULT]'
+            with open(cfg, 'r') as fid:
+                dflt = fid.read().replace('mkl', 'DEFAULT')
+            with open(cfg, 'w') as fid:
+                fid.write(dflt)
+            info = mkl_info()
+            assert info.get_lib_dirs() == lib_dirs
+        finally:
+            os.chdir(previousDir)
+