[vala/0.40] tests: Add dedicated "property ownership" tests

[Rico Tzschichholz <ricotz src gnome org>]

commit f336a5d573f94be460c66d4f4c5aa845af34d896
Author: Rico Tzschichholz <ricotz ubuntu com>
Date:   Mon Sep 2 10:21:05 2019 +0200

    tests: Add dedicated "property ownership" tests

 tests/Makefile.am                     |  1 +
 tests/objects/property-ownership.vala | 89 +++++++++++++++++++++++++++++++++++
 2 files changed, 90 insertions(+)
---
diff --git a/tests/Makefile.am b/tests/Makefile.am
index 37e95951a..c0f969963 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -282,6 +282,7 @@ TESTS = \
        objects/methods.vala \
        objects/paramspec.vala \
        objects/properties.vala \
+       objects/property-ownership.vala \
        objects/property-read-only-auto.vala \
        objects/property-read-only-write.test \
        objects/property-construct-only-write.test \
diff --git a/tests/objects/property-ownership.vala b/tests/objects/property-ownership.vala
new file mode 100644
index 000000000..4fa177586
--- /dev/null
+++ b/tests/objects/property-ownership.vala
@@ -0,0 +1,89 @@
+class Foo : Object {
+}
+
+class Bar : Object {
+       public Foo foo { get; set; }
+       public Foo foo_owned { owned get; set; }
+       public weak Foo foo_weak { get; set; }
+       public weak Foo foo_weak_owned { owned get; set; }
+}
+
+class Manam {
+       public Foo foo { get; set; }
+       public Foo foo_owned { owned get; set; }
+       public weak Foo foo_weak { get; set; }
+       public weak Foo foo_weak_owned { owned get; set; }
+}
+
+void main () {
+       var foo = new Foo ();
+       assert (foo.ref_count == 1);
+
+       //GObject class
+       {
+               var bar = new Bar ();
+               bar.foo = foo;
+               assert (foo.ref_count == 2);
+               unowned Foo f = bar.foo;
+               assert (foo.ref_count == 2);
+       }
+       assert (foo.ref_count == 1);
+       {
+               var bar = new Bar ();
+               bar.foo_owned = foo;
+               assert (foo.ref_count == 2);
+               Foo f = bar.foo_owned;
+               assert (foo.ref_count == 3);
+       }
+       assert (foo.ref_count == 1);
+       {
+               var bar = new Bar ();
+               bar.foo_weak = foo;
+               assert (foo.ref_count == 1);
+               unowned Foo f_weak = bar.foo_weak;
+               assert (foo.ref_count == 1);
+       }
+       assert (foo.ref_count == 1);
+       {
+               var bar = new Bar ();
+               bar.foo_weak_owned = foo;
+               assert (foo.ref_count == 1);
+               Foo f_weak_owned = bar.foo_weak_owned;
+               assert (foo.ref_count == 2);
+       }
+       assert (foo.ref_count == 1);
+
+       //GType class
+       {
+               var manam = new Manam ();
+               manam.foo = foo;
+               assert (foo.ref_count == 2);
+               unowned Foo f = manam.foo;
+               assert (foo.ref_count == 2);
+       }
+       assert (foo.ref_count == 1);
+       {
+               var manam = new Manam ();
+               manam.foo_owned = foo;
+               assert (foo.ref_count == 2);
+               Foo f = manam.foo_owned;
+               assert (foo.ref_count == 3);
+       }
+       assert (foo.ref_count == 1);
+       {
+               var manam = new Manam ();
+               manam.foo_weak = foo;
+               assert (foo.ref_count == 1);
+               unowned Foo f_weak = manam.foo_weak;
+               assert (foo.ref_count == 1);
+       }
+       assert (foo.ref_count == 1);
+       {
+               var manam = new Manam ();
+               manam.foo_weak_owned = foo;
+               assert (foo.ref_count == 1);
+               Foo f_weak_owned = manam.foo_weak_owned;
+               assert (foo.ref_count == 2);
+       }
+       assert (foo.ref_count == 1);
+}