WIP: checkpoint geocaching before main integration

modules/core_geocaching/tests/test_writer.cpp

@@ -0,0 +1,31 @@
+#include "geocaching/protocol/cmp_writer.h"
+#include <cassert>
+#include <fstream>
+#include <iterator>
+#include <vector>
+
+int main(int argc, char** argv)
+{
+    assert(argc == 2);
+    std::ifstream file(argv[1], std::ios::binary);
+    assert(file.good());
+    std::vector<std::uint8_t> fixture((std::istreambuf_iterator<char>(file)), {});
+    assert(fixture.size() == 95);
+    geocaching::RequestId request;
+    geocaching::GeocacheId id;
+    geocaching::RevisionHash hash;
+    std::memcpy(request.bytes.data(), fixture.data() + 6, 16);
+    std::memcpy(id.bytes.data(), fixture.data() + 28, 32);
+    std::memcpy(hash.bytes.data(), fixture.data() + 62, 32);
+    std::vector<std::uint8_t> output(128);
+    std::size_t written = 99;
+    using geocaching::protocol::encodeGetRequest;
+    assert(encodeGetRequest(request, id, &hash, nullptr, 8192, output.data(), output.size(), written));
+    assert(written == fixture.size() && std::memcmp(output.data(), fixture.data(), written) == 0);
+    for (std::size_t n = 0; n < fixture.size(); ++n)
+    {
+        assert(!encodeGetRequest(request, id, &hash, nullptr, 8192, output.data(), n, written));
+        assert(written == 0);
+    }
+    assert(!encodeGetRequest(request, id, &hash, &hash, 8192, output.data(), output.size(), written));
+}