1 // Copyright 2011 The Chromium Authors
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include "net/disk_cache/blockfile/mapped_file.h"
6
7 #include "base/files/file_path.h"
8 #include "base/memory/raw_ptr.h"
9 #include "base/strings/string_util.h"
10 #include "net/disk_cache/disk_cache_test_base.h"
11 #include "net/disk_cache/disk_cache_test_util.h"
12 #include "testing/gtest/include/gtest/gtest.h"
13
14 namespace {
15
16 // Implementation of FileIOCallback for the tests.
17 class FileCallbackTest: public disk_cache::FileIOCallback {
18 public:
FileCallbackTest(int id,MessageLoopHelper * helper,int * max_id)19 FileCallbackTest(int id, MessageLoopHelper* helper, int* max_id)
20 : id_(id),
21 helper_(helper),
22 max_id_(max_id) {
23 }
24 ~FileCallbackTest() override = default;
25
26 void OnFileIOComplete(int bytes_copied) override;
27
28 private:
29 int id_;
30 raw_ptr<MessageLoopHelper> helper_;
31 raw_ptr<int> max_id_;
32 };
33
OnFileIOComplete(int bytes_copied)34 void FileCallbackTest::OnFileIOComplete(int bytes_copied) {
35 if (id_ > *max_id_) {
36 NOTREACHED();
37 }
38
39 helper_->CallbackWasCalled();
40 }
41
42 } // namespace
43
TEST_F(DiskCacheTest,MappedFile_SyncIO)44 TEST_F(DiskCacheTest, MappedFile_SyncIO) {
45 base::FilePath filename = cache_path_.AppendASCII("a_test");
46 auto file = base::MakeRefCounted<disk_cache::MappedFile>();
47 ASSERT_TRUE(CreateCacheTestFile(filename));
48 ASSERT_TRUE(file->Init(filename, 8192));
49
50 char buffer1[20];
51 char buffer2[20];
52 CacheTestFillBuffer(base::as_writable_byte_span(buffer1), false);
53 base::strlcpy(buffer1, "the data", std::size(buffer1));
54 EXPECT_TRUE(file->Write(buffer1, sizeof(buffer1), 8192));
55 EXPECT_TRUE(file->Read(buffer2, sizeof(buffer2), 8192));
56 EXPECT_STREQ(buffer1, buffer2);
57 }
58
TEST_F(DiskCacheTest,MappedFile_AsyncIO)59 TEST_F(DiskCacheTest, MappedFile_AsyncIO) {
60 base::FilePath filename = cache_path_.AppendASCII("a_test");
61 auto file = base::MakeRefCounted<disk_cache::MappedFile>();
62 ASSERT_TRUE(CreateCacheTestFile(filename));
63 ASSERT_TRUE(file->Init(filename, 8192));
64
65 int max_id = 0;
66 MessageLoopHelper helper;
67 FileCallbackTest callback(1, &helper, &max_id);
68
69 char buffer1[20];
70 char buffer2[20];
71 CacheTestFillBuffer(base::as_writable_byte_span(buffer1), false);
72 base::strlcpy(buffer1, "the data", std::size(buffer1));
73 bool completed;
74 EXPECT_TRUE(file->Write(buffer1, sizeof(buffer1), 1024 * 1024, &callback,
75 &completed));
76 int expected = completed ? 0 : 1;
77
78 max_id = 1;
79 helper.WaitUntilCacheIoFinished(expected);
80
81 EXPECT_TRUE(file->Read(buffer2, sizeof(buffer2), 1024 * 1024, &callback,
82 &completed));
83 if (!completed)
84 expected++;
85
86 helper.WaitUntilCacheIoFinished(expected);
87
88 EXPECT_EQ(expected, helper.callbacks_called());
89 EXPECT_FALSE(helper.callback_reused_error());
90 EXPECT_STREQ(buffer1, buffer2);
91 }
92