chore: remove some duplication and add a first few tests

kube/fetcher.go

@@ -19,12 +19,6 @@ type Client struct {
 
 type Options func(*Client)
 
-func WithInClusterProvider() func(c *Client) {
-	return func(c *Client) {
-		c.provider = &DefaultProvider{provider: &InClusterProvider{}}
-	}
-}
-
 func WithKubeConfigProvider(kubeconfig string) func(c *Client) {
 	return func(c *Client) {
 		c.provider = &DefaultProvider{provider: &PathConfigProvider{kubecfg: kubeconfig}}
@@ -32,7 +26,7 @@ func WithKubeConfigProvider(kubeconfig string) func(c *Client) {
 }
 
 func New(opts ...Options) *Client {
-	c := &Client{}
+	c := &Client{provider: &DefaultProvider{provider: &InClusterProvider{}}}
 	for _, opt := range opts {
 		opt(c)
 	}
@@ -119,30 +113,3 @@ func (k PathConfigProvider) Provide() (*rest.Config, error) {
 }
 
 var _ ConfigProvider = &PathConfigProvider{}
-
-type ImageCollector map[string]map[string]struct{}
-
-func NewImageCollector() ImageCollector {
-	return make(map[string]map[string]struct{})
-}
-
-func (c *ImageCollector) Add(image string) {
-	parts := strings.Split(image[20:], ":")
-	if x, exists := (*c)[parts[0]]; exists {
-		x[parts[1]] = struct{}{}
-	} else {
-		(*c)[parts[0]] = map[string]struct{}{
-			parts[1]: {},
-		}
-	}
-}
-
-func (c *ImageCollector) Images() map[string][]string {
-	images := make(map[string][]string)
-	for i, x := range *c {
-		for v := range x {
-			images[i] = append(images[i], v)
-		}
-	}
-	return images
-}