[aravis] tests: test error value on expression evaluation.

[Emmanuel Pacaud <emmanuel src gnome org>]

commit feb80c37b3b2180efc7660d3aefac7de78f5c5d9
Author: Emmanuel Pacaud <emmanuel gnome org>
Date:   Tue Aug 7 10:00:36 2012 +0200

    tests: test error value on expression evaluation.

 tests/evaluator.c |    8 ++++++--
 1 files changed, 6 insertions(+), 2 deletions(-)
---
diff --git a/tests/evaluator.c b/tests/evaluator.c
index 22b9784..ae3167c 100644
--- a/tests/evaluator.c
+++ b/tests/evaluator.c
@@ -59,11 +59,15 @@ expression_test (ExpressionTestData *data)
 	ArvEvaluator *evaluator;
 	gint64 v_int64;
 	double v_double;
+	GError *error = NULL;
 
 	evaluator = arv_evaluator_new (data->expression);
 
-	v_int64 = arv_evaluator_evaluate_as_int64 (evaluator, NULL);
-	v_double = arv_evaluator_evaluate_as_double (evaluator, NULL);
+	v_int64 = arv_evaluator_evaluate_as_int64 (evaluator, &error);
+	g_assert (error == NULL);
+
+	v_double = arv_evaluator_evaluate_as_double (evaluator, &error);
+	g_assert (error == NULL);
 
 	g_assert_cmpint (v_int64, ==, data->result_int64);
 	g_assert_cmpfloat (v_double, ==, data->result_double);