createObjectsFromName(): use alias as fallback only

Fixes a regression of 6.3.0 found when creating with GDAL a TIFF with
a Geographic3D CRS. As TIFF must also encode the Geographic2D CRS,
the code of the Geographic2D CRS is searched from the name of the
Geographic3D CRS. When doing createObjectsFromName(
"ETRS89", {AuthorityFactory::ObjectType::GEOGRAPHIC_2D_CRS}, false, 1),
the result returned was not EPSG:4258 as expected, but EPSG:4173 IRENET95
which is registered as an alias of ETRS89. So sort results such
that non-alias results are returned first.

1 files changed, 10 insertions, 0 deletions

diff --git a/test/unit/test_factory.cpp b/test/unit/test_factory.cpp
index 33b72efd..d49db5bf 100644
--- a/test/unit/test_factory.cpp
+++ b/test/unit/test_factory.cpp
@@ -2869,6 +2869,16 @@ TEST(factory, createObjectsFromName) {
         factory->createObjectsFromName("i_dont_exist", {type}, false, 1);
     }
     factory->createObjectsFromName("i_dont_exist", types, false, 1);
+
+    {
+        auto res = factoryEPSG->createObjectsFromName(
+            "ETRS89", {AuthorityFactory::ObjectType::GEOGRAPHIC_2D_CRS}, false,
+            1);
+        EXPECT_EQ(res.size(), 1U);
+        if (!res.empty()) {
+            EXPECT_EQ(res.front()->getEPSGCode(), 4258);
+        }
+    }
 }
 
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