From 70cdf12c82d1f1328e8b5f43d9ea414dabb64ee4 Mon Sep 17 00:00:00 2001
From: Torsten Wierschin <torsten.wierschin@life-maps.com>
Date: Tue, 21 Jul 2026 14:14:01 +0200
Subject: [PATCH] Z: make ngltools Qt smoke test build standalone when library
 target missing; use DTG format for stable round-trip\n\nEnsure smoke test
 links directly to implementation if ngltools target isn't present so
 migration builds can run tests without producing the full
 library.\n\nCo-authored-by: Copilot
 <223556219+Copilot@users.noreply.github.com>

---
 Z/src/ngltools/CMakeLists.txt                | 12 ++++++++++--
 Z/src/ngltools/tests/NGLToolsQtSmokeTest.cpp |  2 +-
 2 files changed, 11 insertions(+), 3 deletions(-)

diff --git a/Z/src/ngltools/CMakeLists.txt b/Z/src/ngltools/CMakeLists.txt
index 6419e56ab..aaad14447 100755
--- a/Z/src/ngltools/CMakeLists.txt
+++ b/Z/src/ngltools/CMakeLists.txt
@@ -37,8 +37,16 @@ IF(BUILD_TESTING)
   endif()
 
   if(EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/tests/NGLToolsQtSmokeTest.cpp)
-    add_executable(ngltools_qt_smoke tests/NGLToolsQtSmokeTest.cpp)
-    target_link_libraries(ngltools_qt_smoke PRIVATE ngltools ${_QTTEST_TARGET} ${_QTCORE_TARGET})
+    if(TARGET ngltools)
+      add_executable(ngltools_qt_smoke tests/NGLToolsQtSmokeTest.cpp)
+      target_link_libraries(ngltools_qt_smoke PRIVATE ngltools ${_QTTEST_TARGET} ${_QTCORE_TARGET})
+    else()
+      # Build the smoke test as a standalone executable using the dtg implementation
+      # when the ngltools library target is not available in this configuration.
+      add_executable(ngltools_qt_smoke tests/NGLToolsQtSmokeTest.cpp ${CMAKE_CURRENT_SOURCE_DIR}/ngltools_dtg.cpp)
+      target_include_directories(ngltools_qt_smoke PRIVATE ${CMAKE_CURRENT_SOURCE_DIR})
+      target_link_libraries(ngltools_qt_smoke PRIVATE ${_QTTEST_TARGET} ${_QTCORE_TARGET})
+    endif()
     add_test(NAME NGLToolsQtSmoke COMMAND ngltools_qt_smoke)
   endif()
 ENDIF()
diff --git a/Z/src/ngltools/tests/NGLToolsQtSmokeTest.cpp b/Z/src/ngltools/tests/NGLToolsQtSmokeTest.cpp
index 28146a350..d71671985 100644
--- a/Z/src/ngltools/tests/NGLToolsQtSmokeTest.cpp
+++ b/Z/src/ngltools/tests/NGLToolsQtSmokeTest.cpp
@@ -11,7 +11,7 @@ private slots:
     void testDTG()
     {
         QDateTime now = QDateTime::currentDateTimeUtc();
-        QString s = DTG::toString(now);
+        QString s = DTG::toString(now, DTG::Default, DTG::DTG);
         QVERIFY(!s.isEmpty());
         bool ok = false;
         QDateTime parsed = DTG::fromDTGString(s, &ok);