X-Git-Url: https://git.ozlabs.org/?a=blobdiff_plain;f=ccan%2Faga%2Ftest%2Ferror-graph.c;fp=ccan%2Faga%2Ftest%2Ferror-graph.c;h=a52544b175fbc344958cf8586e22d0774cf57849;hb=2192bdd98afbb1ddb489c863edd191877051de8b;hp=0000000000000000000000000000000000000000;hpb=3b7409ea08a7d1643bc7de31ece63e20b89f319b;p=ccan

diff --git a/ccan/aga/test/error-graph.c b/ccan/aga/test/error-graph.c
new file mode 100644
index 00000000..a52544b1
--- /dev/null
+++ b/ccan/aga/test/error-graph.c
@@ -0,0 +1,56 @@
+#include "config.h"
+
+#include <assert.h>
+
+#include <ccan/aga/aga.h>
+#include <ccan/container_of/container_of.h>
+#include <ccan/ptrint/ptrint.h>
+
+#include "simple-graph.h"
+
+static ptrint_t *error_first_edge(const struct aga_graph *g,
+				  const struct aga_node *n)
+{
+	return int2ptr(1);
+}
+
+static ptrint_t *error_next_edge(const struct aga_graph *g,
+				 const struct aga_node *n,
+				 ptrint_t *edge)
+{
+	assert(edge == int2ptr(1));
+
+	return NULL;
+}
+
+static int error_edge_info(const struct aga_graph *g, const struct aga_node *n,
+			   ptrint_t *edge, struct aga_edge_info *ei)
+{
+	struct error_graph *eg = container_of(g, struct error_graph, sg.g);
+	int fromindex = n - eg->sg.nodes;
+
+	switch (fromindex) {
+	case 1:
+		ei->to = &eg->sg.nodes[2];
+		break;
+
+	case 2:
+		ei->to = NULL;
+		break;
+
+	case 3:
+		ei->to = &eg->sg.nodes[4];
+		break;
+
+	default:
+		return -1;
+	}
+
+	return 0;
+}
+
+void error_graph_init(struct error_graph *eg)
+{
+	simple_graph_init(&eg->sg, error_first_edge, error_next_edge,
+			  error_edge_info);
+}