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// Copyright 2024 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/ui/webui/webui_url_hashes.h"
#include "base/hash/hash.h"
#include "base/metrics/histogram_base.h"
#include "base/strings/strcat.h"
#include "base/strings/string_number_conversions.h"
#include "base/strings/string_util.h"
#include "chrome/test/base/in_process_browser_test.h"
#include "content/public/browser/webui_config_map.h"
#include "content/public/test/browser_test.h"
using WebUIUrlHashesBrowserTest = InProcessBrowserTest;
// Tests that the URL hashes are listed in enum WebUIUrlHashes from
// //tools/metrics/histograms/enums.xml. Not finding a URL will cause a CHECK
// failure. enum WebUIUrlHashes is used to collect WebUI usage statistics.
// The URL hash is recorded in histogram "WebUI.CreatedForUrl" when a WebUI
// is opened.
IN_PROC_BROWSER_TEST_F(WebUIUrlHashesBrowserTest, UrlsInHistogram) {
content::WebUIConfigMap& map = content::WebUIConfigMap::GetInstance();
std::vector<std::string> missing_entries;
for (const content::WebUIConfigInfo& config_info :
map.GetWebUIConfigList(nullptr)) {
std::string url = config_info.origin.Serialize() + "/";
uint32_t hash = base::Hash(url);
std::string hash_string =
base::NumberToString(static_cast<base::HistogramBase::Sample32>(hash));
if (!webui_metrics::IsValidWebUIUrlHashes(hash_string)) {
missing_entries.push_back(base::StrCat(
{" <int value=\"", hash_string, "\" label=\"", url, "\"/>"}));
}
}
EXPECT_TRUE(missing_entries.empty())
<< "Please add this line to enum WebUIUrlHashes in "
"//tools/metrics/histograms/metadata/ui/enums.xml:"
<< std::endl
<< base::JoinString(missing_entries, "\n");
}
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