[vala/tintou/garray] tests: add more GLib.Array tests

[Corentin Noël <corentinnoel src gnome org>]

commit d5564a66833376438abb1958caf441ea73ea369b
Author: Corentin Noël <corentin elementary io>
Date:   Fri Nov 16 14:55:00 2018 +0100

    tests: add more GLib.Array tests

 tests/basic-types/garray.vala | 58 ++++++++++++++++++++++++++++++++++++++++++-
 vapi/glib-2.0.vapi            |  4 ++-
 2 files changed, 60 insertions(+), 2 deletions(-)
---
diff --git a/tests/basic-types/garray.vala b/tests/basic-types/garray.vala
index 055ba6a2a..efc48df9c 100644
--- a/tests/basic-types/garray.vala
+++ b/tests/basic-types/garray.vala
@@ -1,7 +1,12 @@
 class Foo : Object {
 }
 
-void main () {
+struct MyStruct {
+       string content;
+       Foo object;
+}
+
+void test_garray () {
        var array = new GLib.Array<Foo> ();
 
        var foo = new Foo ();
@@ -22,3 +27,54 @@ void main () {
        array.remove_range (0, 1);
        assert (foo.ref_count == 1);
 }
+
+void test_garray_delete () {
+       var array = new GLib.Array<Foo> ();
+       var foo = new Foo ();
+       array.append_val (foo);
+       array = null;
+       assert (foo.ref_count == 1);
+}
+
+void test_simpletype_garray () {
+       var array = new GLib.Array<int> ();
+       // g_array_append_val() is a macro which uses a reference to the value parameter and thus can't use 
constants.
+       // FIXME: allow appending constants in Vala
+       int val = 1;
+       array.prepend_val (val);
+       val++;
+       array.append_val (val);
+       val++;
+       array.insert_val (2, val);
+       assert (array.index (0) == 1);
+       assert (array.index (1) == 2);
+       assert (array.index (2) == 3);
+       assert (array.length == 3);
+}
+
+GLib.Array<MyStruct?> create_struct_garray () {
+       var my_struct = MyStruct ();
+       my_struct.content = "this is a test";
+       my_struct.object = new Foo ();
+       var array = new GLib.Array<MyStruct?> ();
+       array.append_val (my_struct);
+       return array;
+}
+
+void test_struct_garray () {
+       var array = create_struct_garray ();
+       assert (array.length == 1);
+       assert (array.index (0).content == "this is a test");
+       assert (array.index (0).object.ref_count == 1);
+       Foo f = array.index (0).object;
+       assert (f.ref_count == 2);
+       array = null;
+       assert (f.ref_count == 1);
+}
+
+void main () {
+       test_garray ();
+       test_simpletype_garray ();
+       test_struct_garray ();
+       test_garray_delete ();
+}
diff --git a/vapi/glib-2.0.vapi b/vapi/glib-2.0.vapi
index 527115e77..1b61f6635 100644
--- a/vapi/glib-2.0.vapi
+++ b/vapi/glib-2.0.vapi
@@ -5296,6 +5296,7 @@ namespace GLib {
                public G remove_index (uint index) {
                        assert (length > index);
                        G g = data[index];
+                       data[index] = null;
                        _remove_index (index);
                        return g;
                }
@@ -5303,6 +5304,7 @@ namespace GLib {
                public G remove_index_fast (uint index) {
                        assert (length > index);
                        G g = data[index];
+                       data[index] = null;
                        _remove_index_fast (index);
                        return g;
                }
@@ -5312,7 +5314,7 @@ namespace GLib {
                        G[] ga = new G[length];
                        for (uint i = 0; i < length; i++) {
                                ga[i] = data[i + index];
-                       }
+                               data[i + index]  = null;                        }
                        _remove_range (index, length);
                        return ga;
                }