Differentiate between single- and multi- props.

service/datastore/dumper/dumper_example_test.go

 // Copyright 2016 The LUCI Authors. All rights reserved.
 // Use of this source code is governed under the Apache License, Version 2.0
 // that can be found in the LICENSE file.
 
 package dumper
 
 import (
         "fmt"
 
         "github.com/luci/gae/impl/memory"
@@ skipping 40 matching lines @@
                                 return "I AM A BANANA"
                         },
                 },
         }.Query(c, nil)
         if err != nil {
                 panic(err)
         }
 
         // Output:
         // dev~app::/Example,1:
-        //   "HexNumber": [0x0014]
-        //   "Number": [PTInt(10)]
+        //   "HexNumber": 0x0014
+        //   "Number": PTInt(10)
         //   "Vals": [
         //     PTString("hi"),
         //     PTString("there")
         //   ]
         //
         // dev~app::/Example,2:
-        //   "HexNumber": [0x0015]
-        //   "Number": [PTInt(11)]
+        //   "HexNumber": 0x0015
+        //   "Number": PTInt(11)
         //   "Vals": [PTString("other")]
         //
         // dev~app::/Other,1:
         //   I AM A BANANA
         //
         // dev~app::/Parent,1/Example,1:
-        //   "HexNumber": [0x0000]
-        //   "Number": [PTInt(0)]
+        //   "HexNumber": 0x0000
+        //   "Number": PTInt(0)
         //   "Vals": [
         //     PTString("child"),
         //     PTString("ent")
         //   ]
 }