107 lines
3.7 KiB
C++
107 lines
3.7 KiB
C++
// Copyright 2019 The Chromium Authors
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "base/i18n/icu_util.h"
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#include "base/files/file_util.h"
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#include "base/logging.h"
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#include "base/strings/string_util.h"
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#include "build/build_config.h"
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#include "testing/gtest/include/gtest/gtest.h"
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#include "third_party/icu/source/common/unicode/uclean.h"
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#include "third_party/icu/source/i18n/unicode/timezone.h"
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namespace base {
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namespace i18n {
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namespace {
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// Directory path to the tzdata configuration files.
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const char kTzDataDirPath[] = "/pkg/base/test/data/tzdata/icu/44/le";
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// File path to the text file containing the expected ICU library revision, for
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// example "2019c".
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const char kRevisionFilePath[] = "/config/data/tzdata/revision.txt";
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} // namespace
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class TimeZoneDataTest : public testing::Test {
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protected:
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void SetUp() override { ResetIcu(); }
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void TearDown() override { ResetIcu(); }
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// Needed to enable loading of ICU config files that are different from what
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// is available in Chromium. Both icu_util and ICU library keep internal
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// state so clear both.
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void ResetIcu() {
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// Clears the state in the reverse order of construction.
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u_cleanup();
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ResetGlobalsForTesting();
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}
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void GetActualRevision(std::string* icu_version) {
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UErrorCode err = U_ZERO_ERROR;
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*icu_version = icu::TimeZone::getTZDataVersion(err);
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ASSERT_EQ(U_ZERO_ERROR, err) << u_errorName(err);
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}
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};
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// Loads a file revision.txt from the actual underlying filesystem, which
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// contains the tzdata version we expect to be able to load. It then attempts
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// to load this configuration from the default path and compares the version it
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// obtained from the load with the expected version, failing on version
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// mismatch.
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//
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// In Fuchsia build bot setup, we ensure that the file revision.txt exists, so
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// that this test is not skipped. In Chromium build bot setup, this file may
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// not be present, in which case we skip running this test.
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TEST_F(TimeZoneDataTest, CompareSystemRevisionWithExpected) {
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if (!base::PathExists(base::FilePath(kRevisionFilePath))) {
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LOG(INFO) << "Skipped test because tzdata config is not present";
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return;
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}
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// ResetIcu() ensures that time zone data is loaded from the default location.
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ASSERT_TRUE(InitializeICU());
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std::string expected;
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ASSERT_TRUE(
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base::ReadFileToString(base::FilePath(kRevisionFilePath), &expected));
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std::string actual;
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GetActualRevision(&actual);
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EXPECT_EQ(expected, actual);
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}
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// Verifies that the current version of the ICU library in use can load ICU
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// data in a specific version format (in this case 44). Designed to fail if
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// the ICU library version used in Chromium drifts from version 44 so much that
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// the library is no longer able to load the old tzdata. If the test fails,
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// this could be a sign that all platforms Chromium runs on need to upgrade the
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// ICU library versions.
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TEST_F(TimeZoneDataTest, TestLoadingTimeZoneDataFromKnownConfigs) {
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ASSERT_TRUE(base::DirectoryExists(base::FilePath(kTzDataDirPath)));
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SetIcuTimeZoneDataDirForTesting(kTzDataDirPath);
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EXPECT_TRUE(InitializeICU());
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std::string actual;
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GetActualRevision(&actual);
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EXPECT_EQ("2019a", actual) << "If ICU no longer supports this tzdata "
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"version, tzdata version needs to be upgraded";
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}
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TEST_F(TimeZoneDataTest, DoesNotCrashWithInvalidPath) {
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SetIcuTimeZoneDataDirForTesting("/some/nonexistent/path");
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EXPECT_TRUE(InitializeICU());
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std::string actual;
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GetActualRevision(&actual);
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EXPECT_TRUE(
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base::StartsWith(actual, "20", base::CompareCase::INSENSITIVE_ASCII))
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<< "Got version: " << actual;
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}
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} // namespace i18n
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} // namespace base
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