[vala/0.50] tests: Add "generics reference transfer" test to increase coverage

[Rico Tzschichholz <ricotz src gnome org>]

commit 3ab71ea6d3500856545e8b8736bcee907e58b3c4
Author: Rico Tzschichholz <ricotz ubuntu com>
Date:   Sun Apr 18 22:33:26 2021 +0200

    tests: Add "generics reference transfer" test to increase coverage

 tests/Makefile.am                      |  1 +
 tests/generics/reference-transfer.vala | 24 ++++++++++++++++++++++++
 2 files changed, 25 insertions(+)
---
diff --git a/tests/Makefile.am b/tests/Makefile.am
index 79656a816..0343c0fdf 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -678,6 +678,7 @@ TESTS = \
        generics/parameter-sizeof-initializer.vala \
        generics/member-dup-destroy.vala \
        generics/property-int-cast.vala \
+       generics/reference-transfer.vala \
        generics/string-literal-comparison.vala \
        generics/type-parameter-properties.vala \
        generics/value-pointer-type-access.vala \
diff --git a/tests/generics/reference-transfer.vala b/tests/generics/reference-transfer.vala
new file mode 100644
index 000000000..da2c1e305
--- /dev/null
+++ b/tests/generics/reference-transfer.vala
@@ -0,0 +1,24 @@
+class Bar<G> {
+       public G g;
+       public Bar (G g) {
+               this.g = g;
+               assert (g == "bar");
+       }
+}
+
+void bar<G> (Bar<G> g) {
+       var t = (owned) g.g;
+       assert (g.g == null);
+       assert (t == "bar");
+}
+
+void foo<G> (owned G g) {
+       var t = (owned) g;
+       assert (g == null);
+       assert (t == "foo");
+}
+
+void main () {
+       foo<string> ("foo");
+       bar<string> (new Bar<string> ("bar"));
+}