File: extension_function_histogram_value_unittest.cc

package info (click to toggle)
chromium 138.0.7204.183-1
  • links: PTS, VCS
  • area: main
  • in suites: trixie
  • size: 6,071,908 kB
  • sloc: cpp: 34,937,088; ansic: 7,176,967; javascript: 4,110,704; python: 1,419,953; asm: 946,768; xml: 739,971; pascal: 187,324; sh: 89,623; perl: 88,663; objc: 79,944; sql: 50,304; cs: 41,786; fortran: 24,137; makefile: 21,806; php: 13,980; tcl: 13,166; yacc: 8,925; ruby: 7,485; awk: 3,720; lisp: 3,096; lex: 1,327; ada: 727; jsp: 228; sed: 36
file content (58 lines) | stat: -rw-r--r-- 2,303 bytes parent folder | download | duplicates (8)
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
// 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_function_histogram_value.h"

#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 {

TEST(ExtensionFunctionHistogramValueTest, CheckEnums) {
  std::optional<base::HistogramEnumEntryMap> enums = base::ReadEnumFromEnumsXml(
      "ExtensionFunctions", /*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(enums->size(), functions::ENUM_BOUNDARY);

  base::FilePath src_root;
  ASSERT_TRUE(base::PathService::Get(base::DIR_SRC_TEST_DATA_ROOT, &src_root));
  base::FilePath function_histogram_value =
      src_root.AppendASCII("extensions")
          .AppendASCII("browser")
          .AppendASCII("extension_function_histogram_value.h");
  ASSERT_TRUE(base::PathExists(function_histogram_value));

  std::string file_contents;
  ASSERT_TRUE(base::ReadFileToString(function_histogram_value, &file_contents));

  for (const auto& entry : *enums) {
    // Check that the C++ file has a definition equal to the histogram file.
    // For now, we do this in a simple, but reasonably effective, manner:
    // expecting to find the string " ENTRY = <value>" somewhere in the file.
    // Notes:
    // - We prepend a space here (" ENTRY =" instead of "ENTRY =") so that
    //   it also enforces updating the entry if you rename it to
    //   `DELETED_FOO_METHOD`.
    // - This doesn't work with multi-line declarations in the enum file. It's
    //   not (yet) worth making it smart enough to deal with that.
    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;
  }
}

}  // namespace extensions