Squashed 'external/toxcore/c-toxcore/' changes from 8f0d505f9a..6d634674a9

6d634674a9 cleanup: Remove old type-ordered event getters.
d1d48d1dfc feat: add ngc events
994ffecc6b refactor: Make event dispatch ordered by receive time.
812f931d5f fix: Make sure there's enough space for CONSUME1 in fuzzers.
50f1b30fa9 test: Add fuzz tests to the coverage run.
df76f5cf47 chore: Move from gcov to llvm source-based coverage.
072e3beb3f fix: issues with packet broadcast error reporting
6b6718e4d2 cleanup: Make group packet entry creation less error-prone
5b9c420ce1 refactor: packet broadcast functions now return errors
af4cb31028 refactor: Use `operator==` for equality tests of `Node_format`.
9592d590cf refactor(test): Slightly nicer C++ interface to tox Random.
c66e10fb7a refactor: Minor refactoring of get_close_nodes functions.
ebc9643862 fix: don't pass garbage data buffer to packet send functions
32b68cffca cleanup: Some more test cleanups, removing overly smart code.
0426624dcb refactor: Assign malloc return to a local variable first.
afc38f2458 test: Add more unit tests for `add_to_list`.
05ce5c1ab9 test: Add "infer" CI check to github, remove from circle.
REVERT: 8f0d505f9a feat: add ngc events
REVERT: 9b8216e70c refactor: Make event dispatch ordered by receive time.

git-subtree-dir: external/toxcore/c-toxcore
git-subtree-split: 6d634674a929edb0ab70689dcbcb195b3547be13

toxcore/DHT_test_util.cc

@@ -0,0 +1,29 @@
+#include "DHT_test_util.hh"
+
+#include <cstring>
+#include <iomanip>
+
+#include "crypto_core_test_util.hh"
+#include "network_test_util.hh"
+
+Node_format random_node_format(const Random *rng)
+{
+    Node_format node;
+    auto const pk = random_pk(rng);
+    std::copy(pk.begin(), pk.end(), node.public_key);
+    node.ip_port = random_ip_port(rng);
+    return node;
+}
+
+bool operator==(Node_format const &a, Node_format const &b)
+{
+    return std::memcmp(a.public_key, b.public_key, sizeof(a.public_key)) == 0
+        && a.ip_port == b.ip_port;
+}
+
+std::ostream &operator<<(std::ostream &out, Node_format const &v)
+{
+    return out << "\n    Node_format{\n"
+               << "      public_key = " << PublicKey(v.public_key) << ",\n"
+               << "      ip_port = " << v.ip_port << " }";
+}