fix(pkg/healthsrv): add dummy bucket and namespace listers

they’ll be used in tests

Author: Aaron Schlesinger

pkg/healthsrv/buckets_lister.go

@@ -9,3 +9,10 @@ type BucketLister interface {
 	// ListBuckets lists all the buckets in the object storage system
 	ListBuckets(*s3.ListBucketsInput) (*s3.ListBucketsOutput, error)
 }
+
+type emptyBucketLister struct{}
+
+func (e emptyBucketLister) ListBuckets(*s3.ListBucketsInput) (*s3.ListBucketsOutput, error) {
+	var buckets []*s3.Bucket
+	return &s3.ListBucketsOutput{Buckets: buckets}, nil
+}

pkg/healthsrv/namespace_lister.go

@@ -11,3 +11,9 @@ type NamespaceLister interface {
 	// List lists all namespaces that are selected by the given label and field selectors
 	List(labels.Selector, fields.Selector) (*api.NamespaceList, error)
 }
+
+type emptyNamespaceLister struct{}
+
+func (n noNamespacesLister) List(labels.Selector, fields.Selector) (*api.NamespaceList, error) {
+	return &api.NamespaceList{}, nil
+}