code review 5448065: Add a []byte argument to hash.Hash to allow an allocati...

src/pkg/crypto/hmac/hmac_test.go

 // Copyright 2009 The Go Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
 package hmac
 
 import (
         "fmt"
         "hash"
         "testing"
@@ skipping 174 matching lines @@
                 h := tt.hash(tt.key)
                 for j := 0; j < 2; j++ {
                         n, err := h.Write(tt.in)
                         if n != len(tt.in) || err != nil {
                                 t.Errorf("test %d.%d: Write(%d) = %d, %v", i, j, len(tt.in), n, err)
                                 continue
                         }
 
                         // Repetitive Sum() calls should return the same value
                         for k := 0; k < 2; k++ {
-                                sum := fmt.Sprintf("%x", h.Sum())
+                                sum := fmt.Sprintf("%x", h.Sum(nil))
                                 if sum != tt.out {
                                         t.Errorf("test %d.%d.%d: have %s want %s\n", i, j, k, sum, tt.out)
                                 }
                         }
 
                         // Second iteration: make sure reset works.
                         h.Reset()
                 }
         }
 }