Added member data to classes to support download resumption.

content/browser/download/base_file_unittest.cc

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/browser/download/base_file.h"
 
 #include "base/file_util.h"
 #include "base/logging.h"
 #include "base/message_loop.h"
 #include "base/scoped_temp_dir.h"
@@ skipping 233 matching lines @@
   ASSERT_EQ(net::OK, AppendDataToFile(kTestData1));
   ASSERT_EQ(net::OK, AppendDataToFile(kTestData2));
   ASSERT_EQ(net::OK, AppendDataToFile(kTestData3));
   std::string hash;
   EXPECT_FALSE(base_file_->GetSha256Hash(&hash));
   base_file_->Finish();
 }
 
 // Write data to the file once and calculate its sha256 hash.
 TEST_F(BaseFileTest, SingleWriteWithHash) {
+  std::string partial_hash;
   ASSERT_EQ(net::OK, base_file_->Initialize(true));
+  // Can get partial hashes before Finish() is called.
+  EXPECT_TRUE(base_file_->GetSha256Hash(&partial_hash));
   ASSERT_EQ(net::OK, AppendDataToFile(kTestData1));
+  EXPECT_TRUE(base_file_->GetSha256Hash(&partial_hash));
   base_file_->Finish();
 
   std::string hash;
   base_file_->GetSha256Hash(&hash);
   EXPECT_EQ("0B2D3F3F7943AD64B860DF94D05CB56A8A97C6EC5768B5B70B930C5AA7FA9ADE",
             base::HexEncode(hash.data(), hash.size()));
 }
 
 // Write data to the file multiple times and calculate its sha256 hash.
 TEST_F(BaseFileTest, MultipleWritesWithHash) {
   std::string hash;
 
   ASSERT_EQ(net::OK, base_file_->Initialize(true));
   ASSERT_EQ(net::OK, AppendDataToFile(kTestData1));
   ASSERT_EQ(net::OK, AppendDataToFile(kTestData2));
   ASSERT_EQ(net::OK, AppendDataToFile(kTestData3));
-  // no hash before Finish() is called either.
-  EXPECT_FALSE(base_file_->GetSha256Hash(&hash));
   base_file_->Finish();
 
   EXPECT_TRUE(base_file_->GetSha256Hash(&hash));
   EXPECT_EQ("CBF68BF10F8003DB86B31343AFAC8C7175BD03FB5FC905650F8C80AF087443A8",
             base::HexEncode(hash.data(), hash.size()));
 }
 
 // Rename the file after all writes to it.
 TEST_F(BaseFileTest, WriteThenRename) {
   ASSERT_EQ(net::OK, base_file_->Initialize(false));
@@ skipping 121 matching lines @@
   expect_file_survives_ = true;
 }
 
 TEST_F(BaseFileTest, IsEmptySha256Hash) {
   std::string empty(BaseFile::kSha256HashLen, '\x00');
   EXPECT_TRUE(BaseFile::IsEmptySha256Hash(empty));
   std::string not_empty(BaseFile::kSha256HashLen, '\x01');
   EXPECT_FALSE(BaseFile::IsEmptySha256Hash(not_empty));
   EXPECT_FALSE(BaseFile::IsEmptySha256Hash(""));
 }