record id-based messages even if they have an empty source

this makes sense if one uses lupdate only for validation purposes, i.e.
to find out if the code uses only ids which are defined in some external
specification.

1 files changed, 5 insertions, 0 deletions

diff --git a/tests/auto/linguist/lupdate/testdata/good/parsecpp/main.cpp b/tests/auto/linguist/lupdate/testdata/good/parsecpp/main.cpp
index e243e662fb..386d9b7194 100644
--- a/tests/auto/linguist/lupdate/testdata/good/parsecpp/main.cpp
+++ b/tests/auto/linguist/lupdate/testdata/good/parsecpp/main.cpp
@@ -247,3 +247,8 @@ class YetAnotherTest : QObject {
         tr("nothing");
     }
 };
+
+
+
+//: This is a message without a source string
+QString test = qtTrId("yet_another_id");