createFromWkt(): be tolerant to missing scale_factor parameter (fixes #1700)

This is invalid WKT, but GDAL 2.4 used to accept it and make a reasonable
use of it...

Currently we default it to 0 which is non sensical. Better use 1 as GDAL 2.4
did, and emit a warning.

Other fix: proj_create_from_wkt() was documented to operate by default in
non-strict validation mode, but it was actually in strict mode. So do as
documented.

1 files changed, 4 insertions, 2 deletions

diff --git a/test/unit/test_c_api.cpp b/test/unit/test_c_api.cpp
index 7fd0e742..0a860d1f 100644
--- a/test/unit/test_c_api.cpp
+++ b/test/unit/test_c_api.cpp
@@ -231,7 +231,8 @@ TEST_F(CApi, proj_create_from_wkt) {
             "    PRIMEM[\"Greenwich\",0],\n"
             "    UNIT[\"degree\",0.0174532925199433]]",
             nullptr, nullptr, nullptr);
-        EXPECT_EQ(obj, nullptr);
+        ObjectKeeper keeper(obj);
+        EXPECT_NE(obj, nullptr);
     }
     {
         PROJ_STRING_LIST warningList = nullptr;
@@ -244,7 +245,8 @@ TEST_F(CApi, proj_create_from_wkt) {
             "    PRIMEM[\"Greenwich\",0],\n"
             "    UNIT[\"degree\",0.0174532925199433]]",
             nullptr, &warningList, &errorList);
-        EXPECT_EQ(obj, nullptr);
+        ObjectKeeper keeper(obj);
+        EXPECT_NE(obj, nullptr);
         EXPECT_EQ(warningList, nullptr);
         proj_string_list_destroy(warningList);
         EXPECT_NE(errorList, nullptr);