aga,agar: Negative weight cycle testcase

[ccan] / ccan / agar / test / api-bellman_ford.c

diff --git a/ccan/agar/test/api-bellman_ford.c b/ccan/agar/test/api-bellman_ford.c
index 960cf3994f0109f17b0466fe25a38f0cb0326c00..a161b0ca63d9b3f398bb4e0b068d925e18b63dd2 100644 (file)
--- a/ccan/agar/test/api-bellman_ford.c
+++ b/ccan/agar/test/api-bellman_ford.c
@@ -229,12 +229,22 @@ static void test_shortcut2(void)
        tal_free(sr);   
 }
 
+static void test_negacycle(void)
+{
+       struct agar_state *sr;
+
+       ok1(sr = agar_bellman_ford_new(NULL, &negacycle_graphr.gr, int2ptr(1)));
+       agar_bellman_ford_complete(sr);
+       ok1(agar_error(sr) == AGA_ERR_NEGATIVE_COST);
+       tal_free(sr);
+}
+
 int main(void)
 {
        plan_tests(3 + 15
                   + FULL_LEN * (FULL_LEN*4 - 1)
                   + CHAIN_LEN * (1 + CHAIN_LEN*2)
-                  + 10 + 32 + 7 + 7);
+                  + 10 + 32 + 7 + 7 + 2);
 
        test_trivial();
        test_parallel();
@@ -244,6 +254,7 @@ int main(void)
        test_traversal1();
        test_shortcut1();
        test_shortcut2();
+       test_negacycle();
        
        return exit_status();
 }