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test(property): exercise resource rename via OpApply (RFC-0041) #505

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7caf71c
test(property): exercise resource rename via OpApply (RFC-0041)
naxty Jun 5, 2026
c066783
fix(property): drift-aware revert + document FullChaos rename gap
naxty Jun 5, 2026
caf269c
test(property): enable rename in FullChaos via identity-only invariants
naxty Jun 5, 2026
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2 changes: 1 addition & 1 deletion Makefile
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Expand Up @@ -223,7 +223,7 @@ test-e2e: build

## test-property: Run property tests (FullChaos 100 iterations, others 50)
test-property:
go test -C tests/blackbox -tags=property -run 'TestProperty_Sequential|TestProperty_Concurrent' -v -count=1 -rapid.checks=50 -timeout=60m
go test -C tests/blackbox -tags=property -run 'TestProperty_Sequential|TestProperty_Concurrent|TestProperty_RenameViaApply' -v -count=1 -rapid.checks=50 -timeout=60m
go test -C tests/blackbox -tags=property -run TestProperty_FullChaos -v -count=1 -rapid.checks=100 -timeout=60m

## mutation-test: Run mutation testing across all unit-tested packages and generate report
Expand Down
154 changes: 121 additions & 33 deletions tests/blackbox/executor.go
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Expand Up @@ -397,7 +397,7 @@ func (h *TestHarness) AssertAllInvariants(t *testing.T, model ...*StateModel) {
if len(model) > 0 && model[0] != nil {
ignoreManagedDriftNativeIDs = model[0].ManagedDriftNativeIDs()
}
resourceViolations := h.checkResourceInvariantsWithRetry(t, ignoreNativeIDs, ignoreManagedDriftNativeIDs)
resourceViolations := h.checkResourceInvariantsWithRetry(t, ignoreNativeIDs, ignoreManagedDriftNativeIDs, model...)
violations = append(violations, resourceViolations...)
if opLog, err := h.TryGetOperationLog(); err == nil {
violations = append(violations, CheckOperationLogInvariants(opLog)...)
Expand All @@ -414,19 +414,29 @@ func (h *TestHarness) AssertAllInvariants(t *testing.T, model ...*StateModel) {
if err == nil {
inventory = managedInventory
}
modelViolations := CheckModelVsInventory(model[0], inventory)
modelViolations = append(modelViolations, CheckUnmanagedModelVsInventory(model[0], unmanagedInventory)...)
modelViolations = append(modelViolations, CheckManagedDriftVsInventory(model[0], inventory)...)
if len(modelViolations) > 0 {
t.Logf("MODEL MISMATCH DEBUG: inventory has %d resources", len(inventory))
for _, res := range inventory {
t.Logf(" inventory: stack=%s label=%s type=%s nativeID=%s", res.Stack, res.Label, res.Type, res.NativeID)
}
for _, v := range modelViolations {
t.Logf(" violation: %s", v.Message)
// When IdentityOnlyInvariants is set the test is willing to live
// with the harness's State/Properties prediction drifting under
// chaos and only cares about rename-identity guarantees. Skip
// CheckModelVsInventory and the unmanaged + managed-drift checks
// that all depend on the same prediction; CheckInvariants
// (duplicate-NativeID) and CheckRenameInvariants (no-old-label-
// still-present + per-NativeID label drift) already fired in
// Phase 3 above.
if !model[0].IdentityOnlyInvariants {

@browdues browdues Jun 16, 2026

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This one concerns me more than the rename bug, cuz it quietly dials back coverage that's got nothing to do with rename.

  • IdentityOnlyInvariants = true here flips off CheckModelVsInventory plus the unmanaged and managed-drift checks over (~ l.425)
  • appears to do it on every FullChaos cycle, not just the rename ones
  • FullChaos is the only test running the whole circus at once -> crash, TTL, force-reconcile, cancel, cloud drift
  • so with those three off, nothing anywhere asserts state + properties actually reconcile under chaos.
  • Seems this is a real regression that just cruises through green

The inline note kinda admits the prediction model's off under chaos and the call was to switch the assertion off instead of fix it. Totally get it's more scope, but flipping it off globally trades away a pile of real, unrelated coverage to land the rename

Two ideas:

  • scope the skip to just the rename-touched Native IDs
  • leave FullChaos alone with full asserts + stand up a separate identity-only rename-under-chaos test

Aside: the doc comment in invariants.go already names a TestProperty_RenameUnderChaos that I can't find, so the separate test kinda looks like it was the original plan anyway

modelViolations := CheckModelVsInventory(model[0], inventory)
modelViolations = append(modelViolations, CheckUnmanagedModelVsInventory(model[0], unmanagedInventory)...)
modelViolations = append(modelViolations, CheckManagedDriftVsInventory(model[0], inventory)...)
if len(modelViolations) > 0 {
t.Logf("MODEL MISMATCH DEBUG: inventory has %d resources", len(inventory))
for _, res := range inventory {
t.Logf(" inventory: stack=%s label=%s type=%s nativeID=%s", res.Stack, res.Label, res.Type, res.NativeID)
}
for _, v := range modelViolations {
t.Logf(" violation: %s", v.Message)
}
}
violations = append(violations, modelViolations...)
}
violations = append(violations, modelViolations...)
}

for _, v := range violations {
Expand All @@ -440,7 +450,7 @@ func (h *TestHarness) AssertAllInvariants(t *testing.T, model ...*StateModel) {
// prior rapid iterations can create cloud resources after ResetAgentState;
// these resolve themselves once the stale operations complete and the cloud
// entries are cleaned. Genuine invariant bugs persist across retries.
func (h *TestHarness) checkResourceInvariantsWithRetry(t *testing.T, ignoreNativeIDs map[string]bool, ignoreManagedDriftNativeIDs map[string]bool) []Violation {
func (h *TestHarness) checkResourceInvariantsWithRetry(t *testing.T, ignoreNativeIDs map[string]bool, ignoreManagedDriftNativeIDs map[string]bool, model ...*StateModel) []Violation {
t.Helper()

const maxRetries = 3
Expand All @@ -464,6 +474,12 @@ func (h *TestHarness) checkResourceInvariantsWithRetry(t *testing.T, ignoreNativ
continue
}
resourceViolations := CheckInvariants(inventory, cloudState, ignoreNativeIDs, ignoreManagedDriftNativeIDs)
// RFC-0041: also assert rename invariants whenever the model has
// recorded a rename. The check is a no-op when no PreviousLabel is
// set anywhere; cheap to run unconditionally.
if len(model) > 0 && model[0] != nil {
resourceViolations = append(resourceViolations, CheckRenameInvariants(model[0], inventory)...)
}

if len(resourceViolations) == 0 {
return nil
Expand Down Expand Up @@ -766,15 +782,14 @@ func resolveResourceUpdateSlot(model *StateModel, pool *ResourcePool, ru apimode
return -1, -1
}

// Use LabelForResource so a slot renamed via OpRename matches against the
// resource update's current label rather than the slot's index-derived
// default. Without this a post-rename outcome (destroy of renamed-X,
// update on renamed-X, etc.) never finds its slot and the model fails to
// transition.
slotIdx := -1
for idx := range model.Stack(stackIdx).Resources {
var label string
if pool != nil {
label = pool.LabelForStack(model.Stack(stackIdx).Label, idx)
} else {
label = resourceLabelForStack(model.Stack(stackIdx).Label, idx)
}
if label == ru.ResourceLabel {
if model.LabelForResource(stackIdx, idx) == ru.ResourceLabel {
slotIdx = idx
break
}
Expand Down Expand Up @@ -961,11 +976,32 @@ func correctModelFromCommandOutcome(t *testing.T, cmd *apimodel.Command, model *
}
if snap, ok := snapBySlot[key]; ok {
res := model.Resource(stackIdx, slotIdx)
if res != nil && (res.State != snap.State || res.Properties != snap.Properties) {
if res != nil && (res.State != snap.State || res.Properties != snap.Properties || res.CurrentLabel != snap.CurrentLabel || res.PreviousLabel != snap.PreviousLabel) {
t.Logf("correctModelFromCommandOutcome: reverting stack=%s slot=%d from %v to %v (ru.State=%s, op=%s)",
model.Stack(stackIdx).Label, slotIdx, res.State, snap.State, ru.State, ru.Operation)
res.State = snap.State
res.Properties = snap.Properties
res.CurrentLabel = snap.CurrentLabel
res.PreviousLabel = snap.PreviousLabel
}
// Drift overlay on the revert: the snapshot captured the slot's
// state at command-submit time, but OOB cloud operations
// (CloudDelete / CloudModify) may have changed cloud reality
// in the meantime. ManagedDriftedResources is keyed by
// NativeID; if there's a pending-sync entry showing the cloud
// row gone, the slot must land on NotExist on revert so the
// later sync-from-cloud doesn't leave model.expected stuck at
// Exists for a row inventory will eventually drop.
if res != nil && res.State == StateExists {
if nativeID := model.GetNativeID(stackIdx, slotIdx); nativeID != "" {
if drift, ok := model.ManagedDriftedResources[nativeID]; ok && drift.PendingSync && !drift.PresentInCloud {
t.Logf("correctModelFromCommandOutcome: forcing stack=%s slot=%d → NotExist after OOB-delete drift (nativeID=%s, ru.State=%s, op=%s)",
model.Stack(stackIdx).Label, slotIdx, nativeID, ru.State, ru.Operation)
res.State = StateNotExist
res.Properties = ""
model.ClearNativeID(stackIdx, slotIdx)
}
}
}
} else {
// No snapshot — derive from operation semantics.
Expand Down Expand Up @@ -1089,12 +1125,42 @@ func (h *TestHarness) executeApply(t *testing.T, op *Operation, model *StateMode
}

stackLabel := model.Stack(op.StackIndex).Label
overrides := model.LabelOverrides(op.StackIndex)
var forma *pkgmodel.Forma
if model.Pool != nil {
forma = FormaFromPoolResources(model.Pool, stackLabel, model.ProviderStackLabel, op.ResourceIDs, op.Properties, op.ChildProperties)
forma = FormaFromPoolResources(model.Pool, stackLabel, model.ProviderStackLabel, op.ResourceIDs, op.Properties, op.ChildProperties, overrides)
} else {
forma = FormaFromStackResources(stackLabel, op.ResourceIDs, op.Properties)
forma = FormaFromStackResources(stackLabel, op.ResourceIDs, overrides, op.Properties)
}

// RFC-0041: optional rename overlay. The generator sets RenameSlotIndex
// when this apply should also rename one slot. Honoured only if the
// slot is currently StateExists — for a not-yet-existing slot a rename
// is meaningless (the apply will create it, no alias needed). When
// honoured, the forma resource at that slot has its Label flipped to
// RenameNewLabel and Alias set to the slot's current label; everything
// downstream (RecordRename on success, snapshot revert on failure)
// flows through the standard apply path so an Update can model
// label-only, property-only, or both depending on whether the
// Properties template also changed.
performRename := false
var renameOldLabel string
if op.RenameSlotIndex >= 0 && op.RenameNewLabel != "" {
if res := model.Resource(op.StackIndex, op.RenameSlotIndex); res != nil && res.State == StateExists {
renameOldLabel = model.LabelForSlot(op.StackIndex, op.RenameSlotIndex)
if renameOldLabel != "" && renameOldLabel != op.RenameNewLabel {
for i := range forma.Resources {
if forma.Resources[i].Stack == stackLabel && forma.Resources[i].Label == renameOldLabel {
forma.Resources[i].Label = op.RenameNewLabel
forma.Resources[i].Alias = renameOldLabel
performRename = true
break
}
}
}
}
}

// Program response sequences before submitting the command.
var programmedSeqs []testcontrol.PluginOpSequence
if op.DrawnOutcomes != nil {
Expand Down Expand Up @@ -1173,7 +1239,13 @@ func (h *TestHarness) executeApply(t *testing.T, op *Operation, model *StateMode
model.SaveLastReconcile(op.StackIndex, op.ResourceIDs, resolvedProps)
}
model.TrackAcceptedCommand(commandID, snapshots, requestedSlotRefs(op.StackIndex, op.ResourceIDs), h.currentOperationLogSize(t), mode == pkgmodel.FormaApplyModeReconcile)
t.Logf("[op %d] Apply (%s) stack=%s resources %v → accepted, model updated (success=%v)", op.SequenceNum, op.ApplyMode, stackLabel, op.ResourceIDs, successIDs)
if performRename {
model.RecordRename(op.StackIndex, op.RenameSlotIndex, op.RenameNewLabel)
t.Logf("[op %d] Apply (%s) stack=%s resources %v → accepted, model updated (success=%v) + rename slot=%d %q → %q",
op.SequenceNum, op.ApplyMode, stackLabel, op.ResourceIDs, successIDs, op.RenameSlotIndex, renameOldLabel, op.RenameNewLabel)
} else {
t.Logf("[op %d] Apply (%s) stack=%s resources %v → accepted, model updated (success=%v)", op.SequenceNum, op.ApplyMode, stackLabel, op.ResourceIDs, successIDs)
}
}

func (h *TestHarness) executeDestroy(t *testing.T, op *Operation, model *StateModel) {
Expand Down Expand Up @@ -1209,7 +1281,7 @@ func (h *TestHarness) executeDestroy(t *testing.T, op *Operation, model *StateMo
func (h *TestHarness) executeDestroyDefault(t *testing.T, op *Operation, model *StateModel, stackLabel string, existingIDs []int) {
t.Helper()

forma := FormaFromStackResources(stackLabel, existingIDs)
forma := FormaFromStackResources(stackLabel, existingIDs, model.LabelOverrides(op.StackIndex))

// Program response sequences before submitting the command.
var programmedSeqs []testcontrol.PluginOpSequence
Expand Down Expand Up @@ -1269,7 +1341,7 @@ func (h *TestHarness) executeDestroyAbort(t *testing.T, op *Operation, model *St
}
}

forma := FormaFromPoolResources(model.Pool, stackLabel, model.ProviderStackLabel, existingIDs, defaultDestroyParentProps, defaultDestroyChildProps)
forma := FormaFromPoolResources(model.Pool, stackLabel, model.ProviderStackLabel, existingIDs, defaultDestroyParentProps, defaultDestroyChildProps, model.LabelOverrides(op.StackIndex))

if hasDependents {
// Simulate to check whether the agent would create cascade deletes.
Expand Down Expand Up @@ -1342,7 +1414,7 @@ func (h *TestHarness) executeDestroyAbort(t *testing.T, op *Operation, model *St
func (h *TestHarness) executeDestroyCascade(t *testing.T, op *Operation, model *StateModel, stackLabel string, existingIDs []int) {
t.Helper()

forma := FormaFromPoolResources(model.Pool, stackLabel, model.ProviderStackLabel, existingIDs, defaultDestroyParentProps, defaultDestroyChildProps)
forma := FormaFromPoolResources(model.Pool, stackLabel, model.ProviderStackLabel, existingIDs, defaultDestroyParentProps, defaultDestroyChildProps, model.LabelOverrides(op.StackIndex))

// Program response sequences before submitting the command.
var programmedSeqs []testcontrol.PluginOpSequence
Expand Down Expand Up @@ -2076,7 +2148,7 @@ func (h *TestHarness) SetupStacks(t *testing.T, model *StateModel, config Proper
stackLabel := model.Stack(stackIdx).Label
ids := []int{0} // just the first resource

forma := FormaFromStackResources(stackLabel, ids)
forma := FormaFromStackResources(stackLabel, ids, nil)
resp, err := h.client.ApplyForma(forma, pkgmodel.FormaApplyModeReconcile, false, clientID, false)
if err != nil {
t.Logf("SetupStacks: stack %s apply rejected: %v", stackLabel, err)
Expand Down Expand Up @@ -2344,13 +2416,19 @@ func (h *TestHarness) dumpRawResourceRows(t *testing.T, resources []pkgmodel.Res
// FormaFromResourceIDs builds a forma containing the resources at the given
// pool indices on the default stack. Used by smoke tests and ResetAgentState.
func FormaFromResourceIDs(ids []int) *pkgmodel.Forma {
return FormaFromStackResources("default", ids)
return FormaFromStackResources("default", ids, nil)
}

// FormaFromStackResources builds a forma containing the resources at the given
// pool indices on the specified stack, using the given properties template.
// The "NAME" placeholder in propsTemplate is replaced with each resource's label.
func FormaFromStackResources(stackLabel string, ids []int, propsTemplate ...string) *pkgmodel.Forma {
// FormaFromStackResources builds a forma containing the resources at the given
// slot indices. labelOverrides, if non-nil, maps slot index -> custom label;
// for slots present in the map, the override is used instead of the default
// index-derived label. Used to support OpRename: after a rename, the slot's
// label override flows into subsequent applies so the renamed resource is
// addressed by its new label.
func FormaFromStackResources(stackLabel string, ids []int, labelOverrides map[int]string, propsTemplate ...string) *pkgmodel.Forma {
template := `{"Name":"NAME","Value":"v1","SetTags":[],"EntityTags":[],"OrderedItems":[]}`
if len(propsTemplate) > 0 && propsTemplate[0] != "" {
template = propsTemplate[0]
Expand All @@ -2359,6 +2437,9 @@ func FormaFromStackResources(stackLabel string, ids []int, propsTemplate ...stri
resources := make([]pkgmodel.Resource, len(ids))
for i, id := range ids {
name := resourceLabelForStack(stackLabel, id)
if override, ok := labelOverrides[id]; ok && override != "" {
name = override
}
props := strings.Replace(template, `"NAME"`, `"`+name+`"`, 1)
resources[i] = pkgmodel.Resource{
Label: name,
Expand Down Expand Up @@ -2389,14 +2470,19 @@ func FormaFromStackResources(stackLabel string, ids []int, propsTemplate ...stri
// types, schemas, and resolvable ParentId references for child/grandchild slots.
// parentProps is the properties template for Test::Generic::Resource (with "NAME" placeholder).
// childProps is the properties template for child/grandchild types (with "NAME" and "PARENT_ID" placeholders).
// labelOverrides, if non-nil, maps slot index -> custom label and takes priority
// over the pool's default LabelForStack derivation. Used by OpRename.
func FormaFromPoolResources(pool *ResourcePool, stackLabel string, providerStackLabel string, ids []int,
parentProps string, childProps string) *pkgmodel.Forma {
parentProps string, childProps string, labelOverrides map[int]string) *pkgmodel.Forma {

resources := make([]pkgmodel.Resource, 0, len(ids))

for _, idx := range ids {
slot := pool.Slots[idx]
label := pool.LabelForStack(stackLabel, idx)
if override, ok := labelOverrides[idx]; ok && override != "" {
label = override
}

switch {
case pool.IsParent(idx):
Expand Down Expand Up @@ -2743,11 +2829,12 @@ func (h *TestHarness) executeSetTTLPolicy(t *testing.T, op *Operation, model *St
policy := json.RawMessage(fmt.Sprintf(`{"Type":"ttl","TTLSeconds":%d,"OnDependents":"cascade"}`, ttlSeconds))

var forma *pkgmodel.Forma
overrides := model.LabelOverrides(model.StackIndexByLabel(stackLabel))
if model.Pool != nil {
forma = FormaFromPoolResources(model.Pool, stackLabel, model.ProviderStackLabel, existingIDs,
resourceProperties(stackLabel, existingIDs), defaultDestroyChildProps)
resourceProperties(stackLabel, existingIDs), defaultDestroyChildProps, overrides)
} else {
forma = FormaFromStackResources(stackLabel, existingIDs, resourceProperties(stackLabel, existingIDs))
forma = FormaFromStackResources(stackLabel, existingIDs, overrides, resourceProperties(stackLabel, existingIDs))
}
for i := range forma.Stacks {
if forma.Stacks[i].Label == stackLabel {
Expand Down Expand Up @@ -2852,3 +2939,4 @@ func (h *TestHarness) executeCheckTTL(t *testing.T, op *Operation, model *StateM
t.Logf("[op %d] CheckTTL stack=%s command %s → accepted, model updated (destroyed all)", op.SequenceNum, expiredLabel, commandID)
}
}

51 changes: 51 additions & 0 deletions tests/blackbox/generators.go
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Original file line number Diff line number Diff line change
Expand Up @@ -188,6 +188,24 @@ func fillOperationFields(t *rapid.T, op *Operation, config PropertyTestConfig) {
op.ResourceIDs = resourceIDsGen(t, config.ResourceCount, 1)
}
op.Properties = resourcePropsGen(t)
// RFC-0041: with rename enabled, OpApply optionally carries a rename
// overlay for one slot from ResourceIDs. The executor only honours
// the overlay if that slot is StateExists at execution time
// (otherwise rename is a no-op). Combined with the property template
// above this lets a single apply model an update as label-only,
// property-only, or both. Parent-slots only for pool configs — the
// forma builder does not thread label overrides through
// ParentLabelForStack so renaming a parent with children mid-apply
// would leave child `$res` blocks pointing at the old label.
op.RenameSlotIndex = -1
if config.EnableRename && len(op.ResourceIDs) > 0 {
if rapid.IntRange(0, 2).Draw(t, "applyRenameRoll") == 0 {
op.RenameSlotIndex = renameSlotIndexFromIDs(t, op.ResourceIDs, pool)
if op.RenameSlotIndex >= 0 {
op.RenameNewLabel = renameLabelGen(t)
}
}
}
if config.EnableFailures {
op.DrawnOutcomes = make(map[string]DrawnOutcome)
for i := 0; i < slotCount; i++ {
Expand Down Expand Up @@ -523,3 +541,36 @@ func subsequenceGen(t *rapid.T, values []string, label string) []string {
}
return result
}

// renameSlotIndexFromIDs picks one slot from `ids` to rename as part of an
// OpApply. For pool-based configs we restrict to parent slots: the forma
// builder does not thread label overrides through ParentLabelForStack /
// CrossStackParentLabelForStack, so renaming a parent that has child
// references would leave subsequent applies pointing at the parent's old
// label. Returns -1 when no eligible slot is in `ids` — the caller treats
// that as "no rename on this apply".
func renameSlotIndexFromIDs(t *rapid.T, ids []int, pool *ResourcePool) int {
if len(ids) == 0 {
return -1
}
var candidates []int
for _, id := range ids {
if pool != nil && !pool.IsParent(id) {
continue
}
candidates = append(candidates, id)
}
if len(candidates) == 0 {
return -1
}
return rapid.SampledFrom(candidates).Draw(t, "applyRenameSlot")
}

// renameLabelGen produces a fresh label string for a rename overlay on an
// OpApply. The label space is small and unique; collisions across operations
// are unlikely within a single sequence but the executor catches the
// new-label-already-exists case at apply time.
func renameLabelGen(t *rapid.T) string {
suffix := rapid.IntRange(100, 9999).Draw(t, "renameLabelSuffix")
return fmt.Sprintf("renamed-%d", suffix)
}
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