Land src/core/package: the pure RSBK container — format ladder, JSON manifest, framing/layout codec

Two-integer ladder (formatVersion/minReaderVersion), bare-name-only entries
validated on encode and decode, prefix decode that proves exact file size
without ever reading a payload.
This commit is contained in:
2026-08-02 07:27:43 -04:00
parent 09a9ef838f
commit 043558a54d
12 changed files with 1351 additions and 0 deletions
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// Standalone tests for reasampler::package's manifest codec — no REAPER, no
// test framework. The round-trip fixture exercises every manifest field and
// every Sample optional in both present and absent states; the rejection suite
// pins the entry-name rule on encode AND decode.
#include "../src/core/package/package_manifest.h"
#include <cstdio>
#include <optional>
#include <string>
using namespace reasampler::package;
using namespace reasampler::model;
static int g_fail = 0;
#define CHECK(cond) do { if(!(cond)) { \
std::printf("FAIL line %d: %s\n", __LINE__, #cond); ++g_fail; } } while(0)
// --- fixtures ----------------------------------------------------------------
// Every Sample field populated, every optional PRESENT.
static Sample fullSample() {
Sample s;
s.id = "smp-full";
s.displayName = "Kick (wet)";
s.relativePath = "reasampler_bank/kick.wav";
s.sourceMode = SourceMode::RazorArea;
s.sourceRange = {1.25, 3.5, 480.0, 1920.0};
s.trackGuids = {"{AAA}", "{BBB}"};
s.wetDry = 0.75;
s.channelCount = 2;
s.sampleRate = 48000;
s.lengthSeconds = 2.25;
s.lengthBeats = 4.5;
s.captureTempo = 120.5;
s.captureTimeSigNum = 7;
s.captureTimeSigDenom = 8;
s.key = "F#m";
s.rootNote = 60;
s.loop = LoopPoints{100, 4800};
s.levels = {-0.3, -12.7, -14.0};
s.clipped = true;
s.tier = Tier::Archive;
s.contentHash = "W0123456789abcdef";
s.provenance = Provenance{"smp-parent", "fx-snapshot"};
s.createdTimestamp = 1754000000;
return s;
}
// Every Sample optional ABSENT (key, rootNote, loop, provenance).
static Sample bareSample() {
Sample s;
s.id = "smp-bare";
s.displayName = "Snare";
s.relativePath = "reasampler_bank/snare.wav";
s.sourceMode = SourceMode::Realtime;
s.contentHash = "Wfedcba9876543210";
s.createdTimestamp = 1754000001;
return s;
}
static PackageManifest fixture() {
PackageManifest m;
m.bankDisplayName = "Drums \"live\""; // escaping exercised
m.exportTimestamp = 1754100000;
m.entries.push_back({"kick.wav", 96000, "1111222233334444", fullSample()});
m.entries.push_back({"snare.wav", 0, "5555666677778888", bareSample()}); // 0-length legal
m.slots.append("smp-full");
m.slots.append("smp-bare");
m.slots.remove("smp-full"); // leaves a gap: slots round-trip must keep it
return m;
}
// --- round trip --------------------------------------------------------------
static void testRoundTripEveryField() {
const PackageManifest m = fixture();
auto json = serializeManifest(m);
CHECK(json.has_value());
auto back = deserializeManifest(*json);
CHECK(back.has_value());
CHECK(*back == m);
// Spot-check both optional states survived (== above proves it; these name
// the claim so a failure reads directly).
CHECK(back->entries[0].sample.loop.has_value());
CHECK(back->entries[0].sample.provenance.has_value());
CHECK(!back->entries[1].sample.key.has_value());
CHECK(!back->entries[1].sample.rootNote.has_value());
CHECK(back->slots.idAt(0).empty()); // the slot gap survived
CHECK(back->slots.slotOf("smp-bare") == 1);
}
static void testEmptyManifestRoundTrips() {
PackageManifest m;
auto json = serializeManifest(m);
CHECK(json.has_value());
auto back = deserializeManifest(*json);
CHECK(back.has_value());
CHECK(*back == m);
}
// --- forward compatibility ---------------------------------------------------
static void testUnknownKeysSkippedAtEveryLevel() {
// A future additive manifest: unknown keys at the root and inside an entry.
const std::string json =
"{\"bankName\":\"B\",\"exported\":7,"
"\"instrumentState\":{\"nested\":[1,2,{\"x\":\"y\"}]},"
"\"entries\":[{\"name\":\"a.wav\",\"length\":10,\"hash\":\"h\","
"\"futureField\":\"ignored\","
"\"index\":{\"version\":1,\"samples\":[{\"id\":\"s1\","
"\"relativePath\":\"bank/a.wav\"}]}}],"
"\"slots\":[],\"trailingUnknown\":null}";
auto m = deserializeManifest(json);
CHECK(m.has_value());
CHECK(m->bankDisplayName == "B");
CHECK(m->exportTimestamp == 7);
CHECK(m->entries.size() == 1);
CHECK(m->entries[0].fileName == "a.wav");
CHECK(m->entries[0].byteLength == 10);
CHECK(m->entries[0].sample.id == "s1");
}
// --- rejection: entry names, both directions ---------------------------------
static void testEncodeRejectsBadEntryName() {
for (const char* bad : {"..\\evil.wav", "../evil.wav", "dir/a.wav", "C:\\a.wav", "", ".."}) {
PackageManifest m = fixture();
m.entries[0].fileName = bad;
CHECK(!serializeManifest(m).has_value());
}
}
static void testDecodeRejectsBadEntryName() {
for (const char* bad : {"..\\\\evil.wav", "../evil.wav", "dir/a.wav", "C:\\\\a.wav", ".."}) {
// Hand-rolled JSON: a hostile package is not limited to what encode emits.
std::string json =
std::string("{\"entries\":[{\"name\":\"") + bad +
"\",\"length\":1,\"hash\":\"h\","
"\"index\":{\"version\":1,\"samples\":[{\"id\":\"s1\","
"\"relativePath\":\"bank/a.wav\"}]}}]}";
CHECK(!deserializeManifest(json).has_value());
}
}
static void testDuplicateEntryNamesRejectedBothWays() {
PackageManifest m = fixture();
m.entries[1].fileName = m.entries[0].fileName;
CHECK(!serializeManifest(m).has_value());
// Decode side, from a hand-built duplicate (a hostile package is not
// limited to what encode emits).
const std::string dup =
"{\"entries\":["
"{\"name\":\"a.wav\",\"length\":1,\"hash\":\"h\","
"\"index\":{\"version\":1,\"samples\":[{\"id\":\"s1\",\"relativePath\":\"p\"}]}},"
"{\"name\":\"a.wav\",\"length\":2,\"hash\":\"i\","
"\"index\":{\"version\":1,\"samples\":[{\"id\":\"s2\",\"relativePath\":\"q\"}]}}]}";
CHECK(!deserializeManifest(dup).has_value());
}
// --- rejection: structural ---------------------------------------------------
static void testEncodeRejectsUnrepresentableSample() {
PackageManifest m = fixture();
m.entries[0].sample.id.clear(); // BankModel::add rejects an empty id
CHECK(!serializeManifest(m).has_value());
PackageManifest m2 = fixture();
m2.entries[0].sample.relativePath = "C:/abs/kick.wav"; // and an absolute path
CHECK(!serializeManifest(m2).has_value());
}
static void testDecodeRejectsMalformedShapes() {
CHECK(!deserializeManifest("").has_value());
CHECK(!deserializeManifest("not json").has_value());
CHECK(!deserializeManifest("[]").has_value());
CHECK(!deserializeManifest("{\"entries\":[{}]}").has_value()); // entry missing fields
// Missing one required entry field apiece.
CHECK(!deserializeManifest(
"{\"entries\":[{\"length\":1,\"hash\":\"h\","
"\"index\":{\"version\":1,\"samples\":[{\"id\":\"s\",\"relativePath\":\"p\"}]}}]}")
.has_value());
CHECK(!deserializeManifest(
"{\"entries\":[{\"name\":\"a.wav\",\"hash\":\"h\","
"\"index\":{\"version\":1,\"samples\":[{\"id\":\"s\",\"relativePath\":\"p\"}]}}]}")
.has_value());
CHECK(!deserializeManifest(
"{\"entries\":[{\"name\":\"a.wav\",\"length\":1,"
"\"index\":{\"version\":1,\"samples\":[{\"id\":\"s\",\"relativePath\":\"p\"}]}}]}")
.has_value());
CHECK(!deserializeManifest(
"{\"entries\":[{\"name\":\"a.wav\",\"length\":1,\"hash\":\"h\"}]}").has_value());
// Negative length.
CHECK(!deserializeManifest(
"{\"entries\":[{\"name\":\"a.wav\",\"length\":-1,\"hash\":\"h\","
"\"index\":{\"version\":1,\"samples\":[{\"id\":\"s\",\"relativePath\":\"p\"}]}}]}")
.has_value());
// A nested index that is not exactly one sample (zero and two).
CHECK(!deserializeManifest(
"{\"entries\":[{\"name\":\"a.wav\",\"length\":1,\"hash\":\"h\","
"\"index\":{\"version\":1,\"samples\":[]}}]}").has_value());
CHECK(!deserializeManifest(
"{\"entries\":[{\"name\":\"a.wav\",\"length\":1,\"hash\":\"h\","
"\"index\":{\"version\":1,\"samples\":[{\"id\":\"s1\",\"relativePath\":\"p\"},"
"{\"id\":\"s2\",\"relativePath\":\"q\"}]}}]}").has_value());
// A nested sample BankModel::add drops (absolute path) fails the entry —
// the silent drop must not half-parse into an empty index.
CHECK(!deserializeManifest(
"{\"entries\":[{\"name\":\"a.wav\",\"length\":1,\"hash\":\"h\","
"\"index\":{\"version\":1,\"samples\":[{\"id\":\"s\","
"\"relativePath\":\"C:/abs.wav\"}]}}]}").has_value());
// An out-of-range enum inside the nested Sample blob fails the entry: the
// manifest defines no enum of its own, and bank_model's codec REJECTS an
// unknown sourceMode/tier rather than degrading — so growing one of those
// vocabularies is a minReaderVersion bump, not an additive change (see this
// directory's CLAUDE.md).
CHECK(!deserializeManifest(
"{\"entries\":[{\"name\":\"a.wav\",\"length\":1,\"hash\":\"h\","
"\"index\":{\"version\":1,\"samples\":[{\"id\":\"s\",\"relativePath\":\"p\","
"\"sourceMode\":99}]}}]}").has_value());
// Trailing garbage after the root object.
auto json = serializeManifest(fixture());
CHECK(json.has_value());
CHECK(!deserializeManifest(*json + "x").has_value());
// Truncation at a few JSON-level offsets (byte-level truncation of the whole
// package is bank_package's suite).
CHECK(!deserializeManifest(json->substr(0, json->size() / 2)).has_value());
CHECK(!deserializeManifest(json->substr(0, 1)).has_value());
}
int main() {
testRoundTripEveryField();
testEmptyManifestRoundTrips();
testUnknownKeysSkippedAtEveryLevel();
testEncodeRejectsBadEntryName();
testDecodeRejectsBadEntryName();
testDuplicateEntryNamesRejectedBothWays();
testEncodeRejectsUnrepresentableSample();
testDecodeRejectsMalformedShapes();
if (g_fail == 0) {
std::printf("package_manifest_tests: all passed\n");
return 0;
}
std::printf("package_manifest_tests: %d failure(s)\n", g_fail);
return 1;
}