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reasampler/tests/test_fx_state.cpp
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// Standalone tests for reasampler::view's derived FX state — no REAPER, no test
// framework. Two halves: what desiredFxState decides is owed, and how one work
// item resolves against the chain as it stands (the chain mutates while a track
// is parked, which is the whole reason a slot cannot be the key).
#include "../src/core/view/fx_state.h"
#include <cstdio>
#include <string>
using namespace reasampler;
using namespace reasampler::view;
static int g_fail = 0;
#define CHECK(cond) do { if(!(cond)) { \
std::printf("FAIL line %d: %s\n", __LINE__, #cond); ++g_fail; } } while(0)
// -- helpers -----------------------------------------------------------------
namespace {
TrackSnapshot recordWithFx(std::vector<FxOfflineState> fx) {
TrackSnapshot snap;
snap.showInTcp = 1; snap.showInMixer = 1; snap.mainSend = 1; snap.fxEnable = 1;
snap.fxOffline = std::move(fx);
return snap;
}
// A Design leaf parked with three identified FX, the middle one offline before
// the park because the USER put it there.
ViewModeModel parkedWithThreeFx() {
ViewModeModel vm;
vm.membership().tag("{T}", kDesignModeId);
vm.storeSnapshot("{T}", recordWithFx({{"{FX-A}", 0}, {"{FX-B}", 1}, {"{FX-C}", 0}}));
return vm;
}
const FxTrackWork* workFor(const std::vector<FxTrackWork>& work, const std::string& guid) {
for (const FxTrackWork& w : work)
if (w.trackGuid == guid) return &w;
return nullptr;
}
bool writeAt(const FxRestoreResolution& res, int fxIndex, bool offline) {
for (const FxOfflineWrite& w : res.writes)
if (w.fxIndex == fxIndex) return w.offline == offline;
return false;
}
bool anyWriteAt(const FxRestoreResolution& res, int fxIndex) {
for (const FxOfflineWrite& w : res.writes)
if (w.fxIndex == fxIndex) return true;
return false;
}
} // namespace
// -- desiredFxState: what is owed --------------------------------------------
static void testActiveTrackIsOwedOnlineInactiveIsOwedOffline() {
ViewModeModel vm = parkedWithThreeFx();
vm.membership().tag("{P}", kArrangeModeId);
vm.storeSnapshot("{P}", recordWithFx({{"{FX-P}", 0}}));
// Active mode is Arrange: {T} (Design) stays parked, {P} is coming back.
const std::vector<FxTrackWork> work = desiredFxState(vm, {"{T}", "{P}"});
CHECK(work.size() == 2);
CHECK(workFor(work, "{P}") && workFor(work, "{P}")->kind == FxWorkKind::Online);
CHECK(workFor(work, "{T}") && workFor(work, "{T}")->kind == FxWorkKind::Offline);
// Offline work names no targets: only the shell can read the live chain, and
// that chain IS the target set.
CHECK(workFor(work, "{T}") && workFor(work, "{T}")->targets.empty());
CHECK(workFor(work, "{P}") && workFor(work, "{P}")->targets.size() == 1);
}
static void testOnlineWorkSortsBeforeOfflineWork() {
// GUIDs chosen so plain GUID order would put every Offline track FIRST — the
// ordering under test has to beat the map's own order to pass.
ViewModeModel vm;
vm.membership().tag("{A-park}", kDesignModeId);
vm.membership().tag("{B-park}", kDesignModeId);
vm.membership().tag("{Y-back}", kArrangeModeId);
vm.membership().tag("{Z-back}", kArrangeModeId);
for (const char* g : {"{A-park}", "{B-park}", "{Y-back}", "{Z-back}"})
vm.storeSnapshot(g, recordWithFx({{"{FX}", 0}}));
const std::vector<FxTrackWork> work =
desiredFxState(vm, {"{A-park}", "{B-park}", "{Y-back}", "{Z-back}"});
CHECK(work.size() == 4);
// Onlining restores state the user owns and is 2-6x the cost of offlining;
// offlining is opportunistic reclaim and may be deferred indefinitely.
CHECK(work[0].trackGuid == "{Y-back}" && work[0].kind == FxWorkKind::Online);
CHECK(work[1].trackGuid == "{Z-back}" && work[1].kind == FxWorkKind::Online);
CHECK(work[2].trackGuid == "{A-park}" && work[2].kind == FxWorkKind::Offline);
CHECK(work[3].trackGuid == "{B-park}" && work[3].kind == FxWorkKind::Offline);
// Deterministic: a re-derivation yields the identical list, so a drain's
// position in it survives one.
CHECK(desiredFxState(vm, {"{A-park}", "{B-park}", "{Y-back}", "{Z-back}"}) == work);
}
static void testUserOfflinedPluginIsNeverBlanketOnlined() {
// The property this whole split exists for. {FX-B} was offline before the
// park because the user offlined it; coming back must leave it offline.
ViewModeModel vm = parkedWithThreeFx();
CHECK(vm.setActiveMode(kDesignModeId));
const std::vector<FxTrackWork> work = desiredFxState(vm, {"{T}"});
CHECK(work.size() == 1);
CHECK(work[0].kind == FxWorkKind::Online);
const FxRestoreResolution res = resolveFxWork(work[0], {"{FX-A}", "{FX-B}", "{FX-C}"});
CHECK(res.writes.size() == 3);
CHECK(res.drops.total() == 0);
CHECK(writeAt(res, 0, false));
CHECK(writeAt(res, 1, true)); // stays offline — NOT blanket-onlined
CHECK(writeAt(res, 2, false));
}
static void testReleasedFxHalfIsOwedNothing() {
// The chain is already back online; the record survives only for its flags.
ViewModeModel vm = parkedWithThreeFx();
CHECK(vm.setActiveMode(kDesignModeId));
vm.releaseSnapshotFx("{T}");
CHECK(desiredFxState(vm, {"{T}"}).empty());
CHECK(fxRestoreTargets(vm, "{T}").empty());
// ...and the mirror: a record whose FLAG half is spent still owes its FX.
ViewModeModel vm2 = parkedWithThreeFx();
CHECK(vm2.setActiveMode(kDesignModeId));
vm2.releaseSnapshotFlags("{T}");
const std::vector<FxTrackWork> work = desiredFxState(vm2, {"{T}"});
CHECK(work.size() == 1);
CHECK(work.size() == 1 && work[0].targets.size() == 3);
}
static void testDeadAndUnparkedTracksAreOwedNothing() {
ViewModeModel vm = parkedWithThreeFx();
// The track is gone from the project: there is nothing to write to.
CHECK(desiredFxState(vm, {}).empty());
// A track with no park record is owed nothing either way — that is also how a
// REFUSED park stays refused: it wrote no record, so no reclaim targets it.
ViewModeModel bare;
bare.membership().tag("{U}", kDesignModeId);
CHECK(desiredFxState(bare, {"{U}"}).empty());
}
// -- resolveFxWork: against the chain as it stands ----------------------------
static void testOfflineWorkTargetsEveryLiveSlot() {
ViewModeModel vm = parkedWithThreeFx(); // active mode Arrange ⇒ {T} parks
const std::vector<FxTrackWork> work = desiredFxState(vm, {"{T}"});
CHECK(work.size() == 1);
if (work.empty()) return;
// Two plugins added while parked, one of which REAPER reports no GUID for.
// Reclaim has to reach those too, which is why offline work keys by slot.
const FxRestoreResolution res =
resolveFxWork(work[0], {"{FX-A}", "", "{FX-B}", "{FX-C}", "{FX-NEW}"});
CHECK(res.writes.size() == 5);
CHECK(res.drops.total() == 0);
for (int i = 0; i < 5; ++i) CHECK(writeAt(res, i, true));
}
static void testReorderRestoreLandsEachPluginItsOwnState() {
ViewModeModel vm = parkedWithThreeFx();
CHECK(vm.setActiveMode(kDesignModeId));
const std::vector<FxTrackWork> work = desiredFxState(vm, {"{T}"});
CHECK(work.size() == 1);
if (work.empty()) return;
// Reordered to C, A, B while parked.
const FxRestoreResolution res = resolveFxWork(work[0], {"{FX-C}", "{FX-A}", "{FX-B}"});
CHECK(res.writes.size() == 3);
CHECK(res.drops.total() == 0);
CHECK(writeAt(res, 1, false)); // A
CHECK(writeAt(res, 2, true)); // B's captured offline followed B, not slot 1
CHECK(writeAt(res, 0, false)); // C
}
static void testDeletedFxIsDroppedExplicitly() {
ViewModeModel vm = parkedWithThreeFx();
CHECK(vm.setActiveMode(kDesignModeId));
const std::vector<FxTrackWork> work = desiredFxState(vm, {"{T}"});
CHECK(work.size() == 1);
if (work.empty()) return;
// B deleted while parked.
const FxRestoreResolution res = resolveFxWork(work[0], {"{FX-A}", "{FX-C}"});
CHECK(res.writes.size() == 2);
CHECK(res.drops.missingIdentity == 1);
CHECK(writeAt(res, 0, false)); // A
CHECK(writeAt(res, 1, false)); // C — and NOT B's captured `true`
CHECK(!describeFxRestoreDrops(res.drops, 1).empty());
}
static void testAddedFxIsLeftAlone() {
ViewModeModel vm = parkedWithThreeFx();
CHECK(vm.setActiveMode(kDesignModeId));
const std::vector<FxTrackWork> work = desiredFxState(vm, {"{T}"});
CHECK(work.size() == 1);
if (work.empty()) return;
const FxRestoreResolution res =
resolveFxWork(work[0], {"{FX-NEW}", "{FX-A}", "{FX-B}", "{FX-C}"});
CHECK(res.writes.size() == 3);
CHECK(res.drops.total() == 0);
CHECK(!anyWriteAt(res, 0)); // the added FX is never written
CHECK(writeAt(res, 1, false));
CHECK(writeAt(res, 2, true));
CHECK(writeAt(res, 3, false));
}
static void testSlotKeyedRecordStillRestoresByPosition() {
// A record lifted from a project saved before FX identity existed: position
// is all its bytes can support, and the targets carry that keying through.
ViewModeModel vm;
vm.membership().tag("{T}", kDesignModeId);
CHECK(vm.setActiveMode(kDesignModeId));
TrackSnapshot snap = recordWithFx({{"", 0}, {"", 1}, {"", 0}});
snap.fxKeying = FxKeying::Slot;
vm.storeSnapshot("{T}", snap);
const std::vector<FxOfflineOp> targets = fxRestoreTargets(vm, "{T}");
CHECK(targets.size() == 3);
CHECK(!targets.empty() && targets[0].keying == FxKeying::Slot);
const std::vector<FxTrackWork> work = desiredFxState(vm, {"{T}"});
CHECK(work.size() == 1);
if (work.empty()) return;
const FxRestoreResolution res = resolveFxWork(work[0], {"{FX-X}", "{FX-Y}", "{FX-Z}"});
CHECK(res.writes.size() == 3);
CHECK(res.drops.total() == 0);
CHECK(writeAt(res, 0, false));
CHECK(writeAt(res, 1, true));
CHECK(writeAt(res, 2, false));
}
// -- the resume point ---------------------------------------------------------
static void testResumePointSkipsWhatTheDrainAlreadyDid() {
ViewModeModel vm = parkedWithThreeFx();
CHECK(vm.setActiveMode(kDesignModeId));
std::vector<FxTrackWork> work = desiredFxState(vm, {"{T}"});
CHECK(work.size() == 1);
if (work.empty()) return;
work[0].resumeAfterFxGuid = "{FX-A}";
const FxRestoreResolution res = resolveFxWork(work[0], {"{FX-A}", "{FX-B}", "{FX-C}"});
CHECK(res.writes.size() == 2);
CHECK(!anyWriteAt(res, 0)); // A is done
CHECK(writeAt(res, 1, true));
CHECK(writeAt(res, 2, false));
// Resuming after the LAST identity leaves nothing owed — the item is finished.
work[0].resumeAfterFxGuid = "{FX-C}";
CHECK(resolveFxWork(work[0], {"{FX-A}", "{FX-B}", "{FX-C}"}).writes.empty());
}
static void testResumePointThatLeftTheChainRestartsRatherThanStrands() {
ViewModeModel vm = parkedWithThreeFx();
CHECK(vm.setActiveMode(kDesignModeId));
std::vector<FxTrackWork> work = desiredFxState(vm, {"{T}"});
CHECK(work.size() == 1);
if (work.empty()) return;
// The drain's cursor named a plugin the user has since deleted. Every write is
// compare-before-write, so re-walking the item is cheap and correct; honoring a
// cursor that matches nothing would strand the rest of the chain.
work[0].resumeAfterFxGuid = "{FX-GONE}";
const FxRestoreResolution res = resolveFxWork(work[0], {"{FX-A}", "{FX-B}", "{FX-C}"});
CHECK(res.writes.size() == 3);
CHECK(writeAt(res, 1, true));
// Same rule on the offline side, where the cursor keys into the live chain.
ViewModeModel parked = parkedWithThreeFx(); // Arrange active ⇒ {T} parks
std::vector<FxTrackWork> offlineWork = desiredFxState(parked, {"{T}"});
CHECK(offlineWork.size() == 1);
if (offlineWork.empty()) return;
offlineWork[0].resumeAfterFxGuid = "{FX-A}";
CHECK(resolveFxWork(offlineWork[0], {"{FX-A}", "{FX-B}", "{FX-C}"}).writes.size() == 2);
offlineWork[0].resumeAfterFxGuid = "{FX-GONE}";
CHECK(resolveFxWork(offlineWork[0], {"{FX-A}", "{FX-B}", "{FX-C}"}).writes.size() == 3);
}
int main() {
testActiveTrackIsOwedOnlineInactiveIsOwedOffline();
testOnlineWorkSortsBeforeOfflineWork();
testUserOfflinedPluginIsNeverBlanketOnlined();
testReleasedFxHalfIsOwedNothing();
testDeadAndUnparkedTracksAreOwedNothing();
testOfflineWorkTargetsEveryLiveSlot();
testReorderRestoreLandsEachPluginItsOwnState();
testDeletedFxIsDroppedExplicitly();
testAddedFxIsLeftAlone();
testSlotKeyedRecordStillRestoresByPosition();
testResumePointSkipsWhatTheDrainAlreadyDid();
testResumePointThatLeftTheChainRestartsRatherThanStrands();
if (g_fail == 0) std::printf("All tests passed.\n");
return g_fail ? 1 : 0;
}