WIP: checkpoint geocaching before main integration

modules/core_geocaching/tests/test_discovery.cpp

@@ -0,0 +1,31 @@
+#include "geocaching/protocol/discovery.h"
+#include <cassert>
+#include <vector>
+
+int main()
+{
+    // [1, bin16(0x11...), bin16(0x22...), uint64_max, "Node"]
+    std::vector<std::uint8_t> data{0x95, 1, 0xc4, 16};
+    data.insert(data.end(), 16, 0x11);
+    data.insert(data.end(), {0xc4, 16});
+    data.insert(data.end(), 16, 0x22);
+    data.push_back(0xcf);
+    data.insert(data.end(), 8, 0xff);
+    data.insert(data.end(), {0xa4, 'N', 'o', 'd', 'e'});
+    geocaching::Destination expected;
+    expected.bytes.fill(0x11);
+    geocaching::protocol::DirectoryAnnouncement out;
+    using geocaching::protocol::decodeDirectoryAnnouncement;
+    assert(decodeDirectoryAnnouncement({data.data(), data.size()}, expected, out));
+    assert(out.sequence == UINT64_MAX && out.epoch[0] == 0x22 && out.name == "Node");
+    for (std::size_t n = 0; n < data.size(); ++n)
+    {
+        assert(!decodeDirectoryAnnouncement({data.data(), n}, expected, out));
+        assert(out.name.empty() && out.sequence == 0);
+    }
+    expected.bytes[0] = 0x33;
+    assert(!decodeDirectoryAnnouncement({data.data(), data.size()}, expected, out));
+    expected.bytes.fill(0x11);
+    data.push_back(0);
+    assert(!decodeDirectoryAnnouncement({data.data(), data.size()}, expected, out));
+}