test: add tests for parse_ip_port

This tests the basic functionality of parse_ip_port, which is used in
parse_wireaddr.

Signed-off-by: William Casarin <jb55@jb55.com>

.gitignore

@@ -23,6 +23,7 @@ lightningd/test/run-commit_tx
 lightningd/test/run-find_my_path
 lightningd/test/run-funding_tx
 lightningd/test/run-key_derive
+common/test/run-ip_port_parsing
 wire/test/run-peer-wire
 bitcoin/test/run-tx-encode
 channeld/test/run-full_channel

common/test/run-ip_port_parsing.c

@@ -0,0 +1,52 @@
+#include "../common/wireaddr.c"
+
+#include <stdio.h>
+#include <assert.h>
+
+/* AUTOGENERATED MOCKS START */
+/* Generated stub for fromwire */
+const u8 *fromwire(const u8 **cursor UNNEEDED, size_t *max UNNEEDED, void *copy UNNEEDED, size_t n UNNEEDED)
+{ fprintf(stderr, "fromwire called!\n"); abort(); }
+/* Generated stub for fromwire_u16 */
+u16 fromwire_u16(const u8 **cursor UNNEEDED, size_t *max UNNEEDED)
+{ fprintf(stderr, "fromwire_u16 called!\n"); abort(); }
+/* Generated stub for fromwire_u8 */
+u8 fromwire_u8(const u8 **cursor UNNEEDED, size_t *max UNNEEDED)
+{ fprintf(stderr, "fromwire_u8 called!\n"); abort(); }
+/* Generated stub for towire */
+void towire(u8 **pptr UNNEEDED, const void *data UNNEEDED, size_t len UNNEEDED)
+{ fprintf(stderr, "towire called!\n"); abort(); }
+/* Generated stub for towire_u16 */
+void towire_u16(u8 **pptr UNNEEDED, u16 v UNNEEDED)
+{ fprintf(stderr, "towire_u16 called!\n"); abort(); }
+/* Generated stub for towire_u8 */
+void towire_u8(u8 **pptr UNNEEDED, u8 v UNNEEDED)
+{ fprintf(stderr, "towire_u8 called!\n"); abort(); }
+/* AUTOGENERATED MOCKS END */
+
+int main(void)
+{
+	tal_t *ctx = tal_tmpctx(NULL);
+	char *ip;
+	u16 port;
+
+	/* ret = getaddrinfo("[::1]:80", NULL, NULL, &res); */
+	assert(parse_ip_port(ctx, "[::1]:80", &ip, &port));
+	assert(streq(ip, "::1"));
+	assert(port == 80);
+
+	assert(!parse_ip_port(ctx, "::1", &ip, &port));
+	assert(streq(ip, "::1"));
+	assert(port == 0);
+
+	assert(parse_ip_port(ctx, "192.168.1.1:8000", &ip, &port));
+	assert(streq(ip, "192.168.1.1"));
+	assert(port == 8000);
+
+	assert(!parse_ip_port(ctx, "192.168.2.255", &ip, &port));
+	assert(streq(ip, "192.168.2.255"));
+	assert(port == 0);
+
+	tal_free(ctx);
+	return 0;
+}