add test to ensure OCIGetter registryClient is set

Signed-off-by: Alex Sears <me@alexsears.com>

pkg/getter/ocigetter_test.go

@@ -0,0 +1,30 @@
+/*
+Copyright The Helm Authors.
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package getter
+
+import (
+	"testing"
+)
+
+func TestNewOCIGetter(t *testing.T) {
+	testfn := func(ops *options) {
+		if ops.registryClient == nil {
+			t.Fatalf("the OCIGetter's registryClient should not be null")
+		}
+	}
+
+	NewOCIGetter(testfn)
+}