test: Added test for trailing commas in calls

tests/acceptance/00_basics/01_compiler/trailing_comma_args.cf

@@ -0,0 +1,31 @@
+body common control
+{
+  bundlesequence => { "test" };
+}
+
+bundle agent test
+{
+  classes:
+    # Testing function call
+    "exists" expression => fileexists($(this.promise_filename));
+    "exists_trailing" expression => fileexists($(this.promise_filename), );
+
+  methods:
+    # Testing bundle call
+    "check" usebundle => check("a", "b", "c");
+    "check_trailing" usebundle => check("d", "e", "f", );
+
+  reports:
+    exists.exists_trailing.abc.def::
+      "$(this.promise_filename) Pass: Both trailing and non-trailing functions/bundles match";
+
+    !(exists.exists_trailing.abc.def)::
+      "$(this.promise_filename) Fail: Class evaluation failing between trailing and non-trailing functions/bundles";
+}
+
+bundle agent check(a, b, c)
+{
+  classes:
+    "$(a)$(b)$(c)"
+      scope => "namespace";
+}