From dc824e2668fbb4ca753182e743fc5f11192500a7 Mon Sep 17 00:00:00 2001
From: Mariusz Felisiak <felisiak.mariusz@gmail.com>
Date: Thu, 8 Apr 2021 09:31:16 +0200
Subject: [PATCH] Refs #27488 -- Corrected detection of IsValid() support on
 SpatiaLite.

LWGEOM is not required for IsValid().
---
 django/contrib/gis/db/backends/spatialite/operations.py | 2 +-
 docs/ref/contrib/gis/db-api.txt                         | 4 ++--
 docs/ref/contrib/gis/functions.txt                      | 2 +-
 3 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/django/contrib/gis/db/backends/spatialite/operations.py b/django/contrib/gis/db/backends/spatialite/operations.py
index 1fc1cf20e01..8fd95d414ee 100644
--- a/django/contrib/gis/db/backends/spatialite/operations.py
+++ b/django/contrib/gis/db/backends/spatialite/operations.py
@@ -82,7 +82,7 @@ class SpatiaLiteOperations(BaseSpatialOperations, DatabaseOperations):
     def unsupported_functions(self):
         unsupported = {'BoundingCircle', 'GeometryDistance', 'MemSize'}
         if not self.lwgeom_version():
-            unsupported |= {'Azimuth', 'GeoHash', 'IsValid', 'MakeValid'}
+            unsupported |= {'Azimuth', 'GeoHash', 'MakeValid'}
         return unsupported
 
     @cached_property
diff --git a/docs/ref/contrib/gis/db-api.txt b/docs/ref/contrib/gis/db-api.txt
index 928d12aa420..3bc85fd66e5 100644
--- a/docs/ref/contrib/gis/db-api.txt
+++ b/docs/ref/contrib/gis/db-api.txt
@@ -326,7 +326,7 @@ Lookup Type                        PostGIS    Oracle   MariaDB   MySQL [#]_   Sp
 :lookup:`equals`                   X          X        X         X            X          C
 :lookup:`exact <same_as>`          X          X        X         X            X          B
 :lookup:`intersects`               X          X        X         X            X          B
-:lookup:`isvalid`                  X          X                  X (≥ 5.7.5)  X (LWGEOM)
+:lookup:`isvalid`                  X          X                  X (≥ 5.7.5)  X
 :lookup:`overlaps`                 X          X        X         X            X          B
 :lookup:`relate`                   X          X        X                      X          C
 :lookup:`same_as`                  X          X        X         X            X          B
@@ -371,7 +371,7 @@ Function                              PostGIS  Oracle         MariaDB      MySQL
 :class:`ForcePolygonCW`               X                                                X
 :class:`GeoHash`                      X                                    X (≥ 5.7.5) X (LWGEOM)
 :class:`Intersection`                 X        X              X            X           X
-:class:`IsValid`                      X        X                           X (≥ 5.7.5) X (LWGEOM)
+:class:`IsValid`                      X        X                           X (≥ 5.7.5) X
 :class:`Length`                       X        X              X            X           X
 :class:`LineLocatePoint`              X                                                X
 :class:`MakeValid`                    X                                                X (LWGEOM)
diff --git a/docs/ref/contrib/gis/functions.txt b/docs/ref/contrib/gis/functions.txt
index 9f7043c2b04..cf2c3217e41 100644
--- a/docs/ref/contrib/gis/functions.txt
+++ b/docs/ref/contrib/gis/functions.txt
@@ -374,7 +374,7 @@ intersection between them.
 
 *Availability*: `MySQL
 <https://dev.mysql.com/doc/refman/en/spatial-convenience-functions.html#function_st-isvalid>`__ (≥ 5.7.5),
-`PostGIS <https://postgis.net/docs/ST_IsValid.html>`__, Oracle, SpatiaLite (LWGEOM)
+`PostGIS <https://postgis.net/docs/ST_IsValid.html>`__, Oracle, SpatiaLite
 
 Accepts a geographic field or expression and tests if the value is well formed.
 Returns ``True`` if its value is a valid geometry and ``False`` otherwise.