1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
|
// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "extensions/browser/extension_event_histogram_value.h"
#include <algorithm>
#include <map>
#include <set>
#include <string>
#include "base/containers/contains.h"
#include "base/files/file_path.h"
#include "base/files/file_util.h"
#include "base/path_service.h"
#include "base/strings/stringprintf.h"
#include "base/test/metrics/histogram_enum_reader.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace extensions {
// Tests that the ExtensionEvents enum in enums.xml exactly matches the
// C++ enum definition.
TEST(ExtensionEventHistogramValueTest, CheckEnums) {
std::optional<base::HistogramEnumEntryMap> enums = base::ReadEnumFromEnumsXml(
"ExtensionEvents", /*subdirectory=*/"extensions");
ASSERT_TRUE(enums);
// The number of enums in the histogram entry should be equal to the number of
// enums in the C++ file.
EXPECT_EQ(events::ENUM_BOUNDARY, enums->size());
base::FilePath src_root;
ASSERT_TRUE(base::PathService::Get(base::DIR_SRC_TEST_DATA_ROOT, &src_root));
base::FilePath event_histogram_value =
src_root.AppendASCII("extensions")
.AppendASCII("browser")
.AppendASCII("extension_event_histogram_value.h");
ASSERT_TRUE(base::PathExists(event_histogram_value));
std::string file_contents;
ASSERT_TRUE(base::ReadFileToString(event_histogram_value, &file_contents));
auto to_remove = std::ranges::remove_if(file_contents, ::isspace);
file_contents.erase(to_remove.begin(), to_remove.end());
for (const auto& entry : *enums) {
// Check that the C++ file has a definition equal to the histogram file.
// NOTE: For now, we do this in a simple, but reasonably effective, manner:
// expecting to find the string "ENTRY=<value>" somewhere in the file
// (ignoring whitespaces).
std::string expected_string =
base::StringPrintf("%s=%d,", entry.second.c_str(), entry.first);
EXPECT_TRUE(base::Contains(file_contents, expected_string))
<< "Failed to find entry " << entry.second << " with value "
<< entry.first << ". Make sure events::HistogramValue and the "
<< "ExtensionEvents enum in enums.xml agree with each other.";
}
}
} // namespace extensions
|
