code review 1814043: container/vector: rename Data() -> Copy()

src/pkg/container/vector/stringvector_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.
 
 // CAUTION: If this file is not vector_test.go, it was generated
 // automatically from vector_test.go - DO NOT EDIT in that case!
 
 package vector
 
 import "testing"
@@ skipping 308 matching lines @@
                 }
                 count++
         })
         if count != n {
                 t.Error(tname(c), "c) should visit", n, "values; did visit", count)
         }
 
 }
 
 
-func TestStrVectorData(t *testing.T) {
-        // verify Data() returns a slice of a copy, not a slice of the original vector
+func TestStrVectorCopy(t *testing.T) {
+        // verify Copy() returns a copy, not simply a slice of the original vector
         const Len = 10
         var src StringVector
         for i := 0; i < Len; i++ {
                 src.Push(int2StrValue(i * i))
         }
-        dest := src.Data()
+        dest := src.Copy()
         for i := 0; i < Len; i++ {
                 src[i] = int2StrValue(-1)
                 v := elem2StrValue(dest[i])
                 if v != int2StrValue(i*i) {
                         t.Error(tname(src), "expected", i*i, "got", v)
                 }
         }
 }