internal/utils: Add unit tests

Add unit tests for various utils functions.

Signed-off-by: Sunny <darkowlzz@protonmail.com>

internal/utils/testdata/components-with-crds.yaml

@@ -0,0 +1,69 @@
+---
+apiVersion: v1
+kind: Namespace
+metadata:
+  name: flux-system
+---
+apiVersion: apiextensions.k8s.io/v1
+kind: CustomResourceDefinition
+metadata:
+  creationTimestamp: null
+  name: alerts.notification.toolkit.fluxcd.io
+spec:
+  group: notification.toolkit.fluxcd.io
+  names:
+    kind: Alert
+    listKind: AlertList
+    plural: alerts
+    singular: alert
+  scope: Namespaced
+  versions:
+  - name: v1beta1
+    served: true
+    storage: true
+    subresources:
+      status: {}
+status:
+  acceptedNames:
+    kind: ""
+    plural: ""
+  conditions: []
+  storedVersions: []
+---
+apiVersion: apiextensions.k8s.io/v1
+kind: CustomResourceDefinition
+metadata:
+  creationTimestamp: null
+  name: buckets.source.toolkit.fluxcd.io
+spec:
+  group: source.toolkit.fluxcd.io
+  names:
+    kind: Bucket
+    listKind: BucketList
+    plural: buckets
+    singular: bucket
+  scope: Namespaced
+  versions:
+  - name: v1beta1
+    served: true
+    storage: true
+    subresources:
+      status: {}
+status:
+  acceptedNames:
+    kind: ""
+    plural: ""
+  conditions: []
+  storedVersions: []
+---
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: kustomize-controller
+  namespace: flux-system
+---
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: notification-controller
+  namespace: flux-system

internal/utils/testdata/components-without-crds.yaml

@@ -0,0 +1,17 @@
+---
+apiVersion: v1
+kind: Namespace
+metadata:
+  name: flux-system
+---
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: kustomize-controller
+  namespace: flux-system
+---
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: notification-controller
+  namespace: flux-system