1 files changed, 48 insertions, 0 deletions
diff --git a/test/unit/test_operation.cpp b/test/unit/test_operation.cpp
index f95f94bd..89edfca4 100644
--- a/test/unit/test_operation.cpp
+++ b/test/unit/test_operation.cpp
@@ -7090,6 +7090,54 @@ TEST(
 
 // ---------------------------------------------------------------------------
 
+TEST(operation,
+     createOperation_fallback_to_proj4_strings_proj_NAD83_to_projliteral) {
+    auto objSrc = PROJStringParser().createFromPROJString(
+        "+proj=utm +zone=11 +datum=NAD83 +type=crs");
+    auto src = nn_dynamic_pointer_cast<CRS>(objSrc);
+    ASSERT_TRUE(src != nullptr);
+
+    auto objDst = PROJStringParser().createFromPROJString(
+        "+proj=longlat +datum=WGS84 +over +type=crs");
+    auto dst = nn_dynamic_pointer_cast<CRS>(objDst);
+    ASSERT_TRUE(dst != nullptr);
+
+    auto op = CoordinateOperationFactory::create()->createOperation(
+        NN_CHECK_ASSERT(src), NN_CHECK_ASSERT(dst));
+    ASSERT_TRUE(op != nullptr);
+    EXPECT_EQ(op->exportToPROJString(PROJStringFormatter::create().get()),
+              "+proj=pipeline "
+              "+step +inv +proj=utm +zone=11 +ellps=GRS80 "
+              "+step +proj=longlat +datum=WGS84 +over "
+              "+step +proj=unitconvert +xy_in=rad +xy_out=deg");
+}
+
+// ---------------------------------------------------------------------------
+
+TEST(operation,
+     createOperation_fallback_to_proj4_strings_geog_NAD83_to_projliteral) {
+    auto objSrc = PROJStringParser().createFromPROJString(
+        "+proj=longlat +datum=NAD83 +type=crs");
+    auto src = nn_dynamic_pointer_cast<CRS>(objSrc);
+    ASSERT_TRUE(src != nullptr);
+
+    auto objDst = PROJStringParser().createFromPROJString(
+        "+proj=longlat +datum=WGS84 +over +type=crs");
+    auto dst = nn_dynamic_pointer_cast<CRS>(objDst);
+    ASSERT_TRUE(dst != nullptr);
+
+    auto op = CoordinateOperationFactory::create()->createOperation(
+        NN_CHECK_ASSERT(src), NN_CHECK_ASSERT(dst));
+    ASSERT_TRUE(op != nullptr);
+    EXPECT_EQ(op->exportToPROJString(PROJStringFormatter::create().get()),
+              "+proj=pipeline "
+              "+step +proj=unitconvert +xy_in=deg +xy_out=rad "
+              "+step +proj=longlat +datum=WGS84 +over "
+              "+step +proj=unitconvert +xy_in=rad +xy_out=deg");
+}
+
+// ---------------------------------------------------------------------------
+
 TEST(
     operation,
     createOperation_fallback_to_proj4_strings_regular_with_nadgrids_to_projliteral) {