--- /dev/null
+// Copyright (C) The Arvados Authors. All rights reserved.
+//
+// SPDX-License-Identifier: AGPL-3.0
+
+package diagnostics
+
+import (
+ "testing"
+
+ . "gopkg.in/check.v1"
+)
+
+func Test(t *testing.T) {
+ TestingT(t)
+}
+
+var _ = Suite(&suite{})
+
+type suite struct{}
+
+func (*suite) TestGetSHA2FromImageData(c *C) {
+ imageSHA2, err := getSHA2FromImageData(HelloWorldDockerImage)
+ c.Check(err, IsNil)
+ c.Check(imageSHA2, Matches, `[0-9a-f]{64}`)
+}