direct: Add a test to validate RecreateFields against the type (#3340)

## Changes
The fields in RecreateFields will be validated against the corresponding
type. If they are not found there, you'll get when testing that package:
> resource_test.go:50: invalid field
'.ingestion_definition.connection_namex' for pipelines.CreatePipeline

## Why
Extra safety without having to write a dedicated test.

Author: denik

bundle/terranova/tnresources/resource.go

@@ -38,9 +38,7 @@ type ResourceSettings struct {
 	// If any of these fields are changed, recreation (Delete + Create) is triggered.
 	// This overrides ClassifyChanges() function (so you don't need to implement that one).
 	// Fields are in structdiff.Change.String() format.
-	// A couple limitations:
-	// - Patterns like hello.*.world and hello[*].world are not supported
-	// - We do not validate this setting. We could write a test that does it since we have ConfigType.
+	// Limitation: patterns like hello.*.world and hello[*].world are not supported
 	RecreateFields map[string]struct{}
 
 	// If resource does not set RecreateFields, RecreateAllowed, UpdateUpdatesID then

bundle/terranova/tnresources/resource_test.go

@@ -5,6 +5,8 @@ import (
 	"testing"
 
 	"github.com/databricks/cli/bundle/config/resources"
+	"github.com/databricks/cli/libs/structdiff/structpath"
+	"github.com/databricks/cli/libs/structwalk"
 	"github.com/databricks/databricks-sdk-go"
 	"github.com/databricks/databricks-sdk-go/service/jobs"
 	"github.com/stretchr/testify/require"
@@ -32,3 +34,33 @@ func TestNewJobResource(t *testing.T) {
 	r := res.(*ResourceJob)
 	require.Equal(t, cfg.JobSettings, r.config)
 }
+
+// validateFields uses structwalk to generate all valid field paths and checks membership.
+func validateFields(t *testing.T, configType reflect.Type, fields map[string]struct{}) {
+	validPaths := make(map[string]struct{})
+
+	err := structwalk.WalkType(configType, func(path *structpath.PathNode, typ reflect.Type) bool {
+		validPaths[path.String()] = struct{}{}
+		return true // continue walking
+	})
+	require.NoError(t, err)
+
+	for fieldPath := range fields {
+		if _, exists := validPaths[fieldPath]; !exists {
+			t.Errorf("invalid field '%s' for %s", fieldPath, configType)
+		}
+	}
+}
+
+// TestRecreateFieldsValidation validates that all fields in RecreateFields
+// exist in the corresponding ConfigType for each resource.
+func TestRecreateFieldsValidation(t *testing.T) {
+	for resourceName, settings := range SupportedResources {
+		if len(settings.RecreateFields) == 0 {
+			continue
+		}
+		t.Run(resourceName, func(t *testing.T) {
+			validateFields(t, settings.ConfigType, settings.RecreateFields)
+		})
+	}
+}