Merge branch 'sg/test-oid-wo-incomplete-line'

Test helper updates.

* sg/test-oid-wo-incomplete-line:
  tests: make 'test_oid' print trailing newline

t/test-lib-functions.sh

@@ -1682,7 +1682,7 @@ test_oid () {
 	then
 		BUG "undefined key '$1'"
 	fi &&
-	eval "printf '%s' \"\${$var}\""
+	eval "printf '%s\n' \"\${$var}\""
 }
 
 # Insert a slash into an object ID so it can be used to reference a location