Fixed #25797 -- Fixed regex for getting units from SRS WKT.

django/contrib/gis/db/backends/base/models.py

@@ -21,12 +21,7 @@ class SpatialRefSysMixin(object):
     # TODO: Figure out how to pull out angular units of projected coordinate system and
     # fix for LOCAL_CS types.  GDAL should be highly recommended for performing
     # distance queries.
-    units_regex = re.compile(
-        r'.+UNIT ?\["(?P<unit_name>[\w \'\(\)]+)", ?(?P<unit>[\d\.]+)'
-        r'(,AUTHORITY\["(?P<unit_auth_name>[\w \'\(\)]+)",'
-        r'"(?P<unit_auth_val>\d+)"\])?\]([\w ]+)?(,'
-        r'AUTHORITY\["(?P<auth_name>[\w \'\(\)]+)","(?P<auth_val>\d+)"\])?\]$'
-    )
+    units_regex = re.compile(r'.+UNIT ?\["(?P<unit_name>[\w \.\'\(\)]+)", ?(?P<unit>[^ ,\]]+)', re.DOTALL)
 
     @property
     def srs(self):

tests/gis_tests/distapp/tests.py

@@ -1,13 +1,16 @@
 from __future__ import unicode_literals
 
+from unittest import skipUnless
+
 from django.contrib.gis.db.models.functions import (
     Area, Distance, Length, Perimeter, Transform,
 )
+from django.contrib.gis.gdal import HAS_GDAL
 from django.contrib.gis.geos import GEOSGeometry, LineString, Point
 from django.contrib.gis.measure import D  # alias for Distance
 from django.db import connection
 from django.db.models import F, Q
-from django.test import TestCase, ignore_warnings, skipUnlessDBFeature
+from django.test import TestCase, ignore_warnings, mock, skipUnlessDBFeature
 from django.utils.deprecation import RemovedInDjango20Warning
 
 from ..utils import no_oracle, oracle, postgis
@@ -487,6 +490,7 @@ class DistanceFunctionsTests(TestCase):
             tol
         )
 
+    @skipUnless(HAS_GDAL, "GDAL is required.")
     @skipUnlessDBFeature("has_Distance_function", "has_Transform_function")
     def test_distance_projected(self):
         """
@@ -509,6 +513,8 @@ class DistanceFunctionsTests(TestCase):
                         455411.438904354, 519386.252102563, 696139.009211594,
                         232513.278304279, 542445.630586414, 456679.155883207]
 
+        for has_gdal in [False, True]:
+            with mock.patch('django.contrib.gis.gdal.HAS_GDAL', has_gdal):
                 # Testing using different variations of parameters and using models
                 # with different projected coordinate systems.
                 dist1 = SouthTexasCity.objects.annotate(distance=Distance('point', lagrange)).order_by('id')