test(09-05): add failing tests for scoped record lifecycle

- Record routes must enforce permission before ids or bodies and return D-10 envelopes
- Create, update, and delete run Before and After hooks once inside the transaction
- Out-of-scope and missing records are indistinguishable, and hook failure rolls back

cabana/crud_test.go

@@ -75,10 +75,8 @@ func (crudRow) Fillable() []string { return []string{"name", "note"} }
 func (crudRow) Rules() map[string]string { return crudRuleSet }
 
 func (r *crudRow) BeforeValidate(tx *gorm.DB) error {
-	ctx := context.Background()
-	if tx != nil && tx.Statement != nil && tx.Statement.Context != nil {
-		ctx = tx.Statement.Context
-	}
+	ctx := txContext(tx)
+	recordHook(ctx, "before_validate")
 	if clear, _ := ctx.Value(clearNameKey{}).(bool); clear {
 		if r.Name == "" {
 			return errors.New("fill did not run before validate")
@@ -88,6 +86,71 @@ func (r *crudRow) BeforeValidate(tx *gorm.DB) error {
 	return nil
 }
 
+func (r *crudRow) BeforeSave(tx *gorm.DB) error {
+	recordHook(txContext(tx), "before_save")
+	return nil
+}
+
+func (r *crudRow) BeforeCreate(tx *gorm.DB) error {
+	recordHook(txContext(tx), "before_create")
+	return nil
+}
+
+func (r *crudRow) AfterCreate(tx *gorm.DB) error {
+	recordHook(txContext(tx), "after_create")
+	return nil
+}
+
+func (r *crudRow) AfterSave(tx *gorm.DB) error {
+	recordHook(txContext(tx), "after_save")
+	return nil
+}
+
+func (r *crudRow) BeforeUpdate(tx *gorm.DB) error {
+	recordHook(txContext(tx), "before_update")
+	return nil
+}
+
+func (r *crudRow) AfterUpdate(tx *gorm.DB) error {
+	recordHook(txContext(tx), "after_update")
+	return nil
+}
+
+func (r *crudRow) BeforeDelete(tx *gorm.DB) error {
+	ctx := txContext(tx)
+	recordHook(ctx, "before_delete")
+	if fail, _ := ctx.Value(failDeleteKey{}).(bool); fail {
+		return errors.New("secret-hook-boom")
+	}
+	return nil
+}
+
+func (r *crudRow) AfterDelete(tx *gorm.DB) error {
+	recordHook(txContext(tx), "after_delete")
+	return nil
+}
+
+type hookSinkKey struct{}
+type failDeleteKey struct{}
+
+func txContext(tx *gorm.DB) context.Context {
+	if tx != nil && tx.Statement != nil && tx.Statement.Context != nil {
+		return tx.Statement.Context
+	}
+	return context.Background()
+}
+
+func recordHook(ctx context.Context, name string) {
+	if ctx == nil {
+		return
+	}
+	sink, _ := ctx.Value(hookSinkKey{}).(*[]string)
+	if sink == nil {
+		return
+	}
+	*sink = append(*sink, name)
+}
+
 type crudNoRules struct {
 	ID   uint   `gorm:"column:id;primaryKey"`
 	Name string `gorm:"column:name"`