Add integration test for xvalidation on field and struct

pkg/crd/testdata/cronjob_types.go

@@ -303,6 +303,10 @@ type CronJobSpec struct {
 	// +kubebuilder:validation:XValidation:rule="self.size() % 2 == 0",messageExpression="'Length has to be even but is ' + len(self.stringWithEvenLengthAndMessageExpression) + ' instead'"
 	StringWithEvenLengthAndMessageExpression string `json:"stringWithEvenLengthAndMessageExpression,omitempty"`
 
+	// Test of the expression-based validation on both field and type.
+	// +kubebuilder:validation:XValidation:rule="self.startsWith('good-')",message="must have good prefix"
+	StringWithEvenAndGoodPrefix StringEvenType `json:"goodStringEven,omitempty"`
+
 	// Test that we can add a forbidden field using XValidation Reason and FieldPath.
 	// The validation is applied to the spec struct itself and not the field.
 	ForbiddenInt int `json:"forbiddenInt,omitempty"`
@@ -585,6 +589,10 @@ const (
 	ReplaceConcurrent ConcurrencyPolicy = "Replace"
 )
 
+// StringEvenType is a type that includes an expression-based validation.
+// +kubebuilder:validation:XValidation:rule="self.size() % 2 == 0",message="must have even length"
+type StringEvenType string
+
 // CronJobStatus defines the observed state of CronJob
 type CronJobStatus struct {
 	// INSERT ADDITIONAL STATUS FIELD - define observed state of cluster

pkg/crd/testdata/testdata.kubebuilder.io_cronjobs.yaml

@@ -6840,6 +6840,15 @@ spec:
                 - messageExpression: '''Length has to be even but is '' + len(self.stringWithEvenLengthAndMessageExpression)
                     + '' instead'''
                   rule: self.size() % 2 == 0
+              goodStringEven:
+                description: Test of the expression-based validation on both field
+                  and type.
+                type: string
+                x-kubernetes-validations:
+                - message: must have even length
+                  rule: self.size() % 2 == 0
+                - message: must have good prefix
+                  rule: self.startsWith('good-')
               structWithSeveralFields:
                 description: A struct that can only be entirely replaced
                 properties: