From 40887b4d2ec2e1865df8f381aa1387ba4ee10eba Mon Sep 17 00:00:00 2001
From: Nick Mathewson <nickm@torproject.org>
Date: Tue, 22 Aug 2017 14:50:50 -0400
Subject: [PATCH] Unit tests for maintaining ed25519->node map.

---
 src/test/test_nodelist.c | 104 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 104 insertions(+)

diff --git a/src/test/test_nodelist.c b/src/test/test_nodelist.c
index 256354415c..db2a8fd02c 100644
--- a/src/test/test_nodelist.c
+++ b/src/test/test_nodelist.c
@@ -7,7 +7,9 @@
  **/
 
 #include "or.h"
+#include "networkstatus.h"
 #include "nodelist.h"
+#include "torcert.h"
 #include "test.h"
 
 /** Test the case when node_get_by_id() returns NULL,
@@ -100,6 +102,107 @@ test_nodelist_node_is_dir(void *arg)
   return;
 }
 
+static networkstatus_t *dummy_ns = NULL;
+static networkstatus_t *
+mock_networkstatus_get_latest_consensus(void)
+{
+  return dummy_ns;
+}
+static networkstatus_t *
+mock_networkstatus_get_latest_consensus_by_flavor(consensus_flavor_t f)
+{
+  tor_assert(f == FLAV_MICRODESC);
+  return dummy_ns;
+}
+
+static void
+test_nodelist_ed_id(void *arg)
+{
+  routerstatus_t *rs[4];
+  microdesc_t *md[4];
+  routerinfo_t *ri[4];
+  networkstatus_t *ns;
+  int i;
+  (void)arg;
+
+  ns = tor_malloc_zero(sizeof(networkstatus_t));
+  ns->flavor = FLAV_MICRODESC;
+  ns->routerstatus_list = smartlist_new();
+  dummy_ns = ns;
+  MOCK(networkstatus_get_latest_consensus,
+       mock_networkstatus_get_latest_consensus);
+  MOCK(networkstatus_get_latest_consensus_by_flavor,
+       mock_networkstatus_get_latest_consensus_by_flavor);
+
+  /* Make a bunch of dummy objects that we can play around with.  Only set the
+     necessary fields */
+
+  for (i = 0; i < 4; ++i) {
+    rs[i] = tor_malloc_zero(sizeof(*rs[i]));
+    md[i] = tor_malloc_zero(sizeof(*md[i]));
+    ri[i] = tor_malloc_zero(sizeof(*ri[i]));
+
+    crypto_rand(md[i]->digest, sizeof(md[i]->digest));
+    md[i]->ed25519_identity_pkey = tor_malloc(sizeof(ed25519_public_key_t));
+    crypto_rand((char*)md[i]->ed25519_identity_pkey,
+                sizeof(ed25519_public_key_t));
+    crypto_rand(rs[i]->identity_digest, sizeof(rs[i]->identity_digest));
+    memcpy(ri[i]->cache_info.identity_digest, rs[i]->identity_digest,
+           DIGEST_LEN);
+    memcpy(rs[i]->descriptor_digest, md[i]->digest, DIGEST256_LEN);
+    ri[i]->cache_info.signing_key_cert = tor_malloc_zero(sizeof(tor_cert_t));
+    memcpy(&ri[i]->cache_info.signing_key_cert->signing_key,
+           md[i]->ed25519_identity_pkey, sizeof(ed25519_public_key_t));
+
+    if (i != 3)
+      smartlist_add(ns->routerstatus_list, rs[i]);
+  }
+
+  tt_int_op(0, OP_EQ, smartlist_len(nodelist_get_list()));
+
+  nodelist_set_consensus(ns);
+
+  tt_int_op(3, OP_EQ, smartlist_len(nodelist_get_list()));
+
+  /* No Ed25519 info yet, so nothing has an ED id. */
+  tt_ptr_op(NULL, OP_EQ, node_get_by_ed25519_id(md[0]->ed25519_identity_pkey));
+
+  /* Register the first one by md, then look it up. */
+  node_t *n = nodelist_add_microdesc(md[0]);
+  tt_ptr_op(n, OP_EQ, node_get_by_ed25519_id(md[0]->ed25519_identity_pkey));
+
+  /* Register the second by ri, then look it up. */
+  routerinfo_t *ri_old = NULL;
+  n = nodelist_set_routerinfo(ri[1], &ri_old);
+  tt_ptr_op(n, OP_EQ, node_get_by_ed25519_id(md[1]->ed25519_identity_pkey));
+  tt_ptr_op(ri_old, OP_EQ, NULL);
+
+  /* Register it by md too. */
+  node_t *n2 = nodelist_add_microdesc(md[1]);
+  tt_ptr_op(n2, OP_EQ, n);
+  tt_ptr_op(n, OP_EQ, node_get_by_ed25519_id(md[1]->ed25519_identity_pkey));
+
+  /* Register the 4th by ri only -- we never put it into the networkstatus,
+   * so it has to be independent */
+  n = nodelist_set_routerinfo(ri[3], &ri_old);
+  tt_ptr_op(n, OP_EQ, node_get_by_ed25519_id(md[3]->ed25519_identity_pkey));
+  tt_ptr_op(ri_old, OP_EQ, NULL);
+  tt_int_op(4, OP_EQ, smartlist_len(nodelist_get_list()));
+
+ done:
+  for (i = 0; i < 4; ++i) {
+    tor_free(rs[i]);
+    tor_free(md[i]->ed25519_identity_pkey);
+    tor_free(md[i]);
+    tor_free(ri[i]->cache_info.signing_key_cert);
+    tor_free(ri[i]);
+  }
+  smartlist_free(ns->routerstatus_list);
+  tor_free(ns);
+  UNMOCK(networkstatus_get_latest_consensus);
+  UNMOCK(networkstatus_get_latest_consensus_by_flavor);
+}
+
 #define NODE(name, flags) \
   { #name, test_nodelist_##name, (flags), NULL, NULL }
 
@@ -107,6 +210,7 @@ struct testcase_t nodelist_tests[] = {
   NODE(node_get_verbose_nickname_by_id_null_node, TT_FORK),
   NODE(node_get_verbose_nickname_not_named, TT_FORK),
   NODE(node_is_dir, TT_FORK),
+  NODE(ed_id, TT_FORK),
   END_OF_TESTCASES
 };