[vala/staging] tests: Add test for parameter type checking of async methods

[Rico Tzschichholz <ricotz src gnome org>]

commit 71ffab13ba4ac484b96751b735171fd2e8651a67
Author: Rico Tzschichholz <ricotz ubuntu com>
Date:   Thu Jan 18 21:00:29 2018 +0100

    tests: Add test for parameter type checking of async methods
    
    https://bugzilla.gnome.org/show_bug.cgi?id=792660

 tests/Makefile.am                 |    1 +
 tests/asynchronous/bug792660.vala |   15 +++++++++++++++
 2 files changed, 16 insertions(+), 0 deletions(-)
---
diff --git a/tests/Makefile.am b/tests/Makefile.am
index e705764..54b0ae9 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -300,6 +300,7 @@ TESTS = \
        asynchronous/bug762819.vala \
        asynchronous/bug777242.vala \
        asynchronous/bug783543.vala \
+       asynchronous/bug792660.vala \
        asynchronous/closures.vala \
        asynchronous/generator.vala \
        asynchronous/yield.vala \
diff --git a/tests/asynchronous/bug792660.vala b/tests/asynchronous/bug792660.vala
new file mode 100644
index 0000000..b5ffddd
--- /dev/null
+++ b/tests/asynchronous/bug792660.vala
@@ -0,0 +1,15 @@
+abstract class Foo {
+       public abstract async void foo ([CCode (array_length = false)] string[] a, int i);
+}
+
+class Bar : Foo {
+       public override async void foo (string[] a, int i) {
+               assert (i == 42);
+       }
+}
+
+void main () {
+       string[] a = { "foo", "bar" };
+       var bar = new Bar ();
+       bar.foo.begin (a, 42);
+}