ladybird/Tests/LibC/TestLibCTime.cpp
sin-ack c70f45ff44 Everywhere: Explicitly specify the size in StringView constructors
This commit moves the length calculations out to be directly on the
StringView users. This is an important step towards the goal of removing
StringView(char const*), as it moves the responsibility of calculating
the size of the string to the user of the StringView (which will prevent
naive uses causing OOB access).
2022-07-12 23:11:35 +02:00

122 lines
2.5 KiB
C++

/*
* Copyright (c) 2021, Brian Gianforcaro <bgianf@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/StringView.h>
#include <LibTest/TestCase.h>
#include <time.h>
auto const expected_epoch = "Thu Jan 1 00:00:00 1970\n"sv;
class TimeZoneGuard {
public:
TimeZoneGuard()
: m_tz(getenv("TZ"))
{
}
explicit TimeZoneGuard(char const* tz)
: m_tz(getenv("TZ"))
{
setenv("TZ", tz, 1);
}
~TimeZoneGuard()
{
if (m_tz)
setenv("TZ", m_tz, 1);
else
unsetenv("TZ");
}
private:
char const* m_tz { nullptr };
};
TEST_CASE(asctime)
{
TimeZoneGuard guard("UTC");
time_t epoch = 0;
auto result = asctime(localtime(&epoch));
EXPECT_EQ(expected_epoch, StringView(result, strlen(result)));
}
TEST_CASE(asctime_r)
{
TimeZoneGuard guard("UTC");
char buffer[26] {};
time_t epoch = 0;
auto result = asctime_r(localtime(&epoch), buffer);
EXPECT_EQ(expected_epoch, StringView(result, strlen(result)));
}
TEST_CASE(ctime)
{
TimeZoneGuard guard("UTC");
time_t epoch = 0;
auto result = ctime(&epoch);
EXPECT_EQ(expected_epoch, StringView(result, strlen(result)));
}
TEST_CASE(ctime_r)
{
TimeZoneGuard guard("UTC");
char buffer[26] {};
time_t epoch = 0;
auto result = ctime_r(&epoch, buffer);
EXPECT_EQ(expected_epoch, StringView(result, strlen(result)));
}
TEST_CASE(tzset)
{
TimeZoneGuard guard;
auto set_tz = [](char const* tz) {
setenv("TZ", tz, 1);
tzset();
};
set_tz("UTC");
EXPECT_EQ(timezone, 0);
EXPECT_EQ(altzone, 0);
EXPECT_EQ(daylight, 0);
EXPECT_EQ(tzname[0], "UTC"sv);
EXPECT_EQ(tzname[1], "UTC"sv);
set_tz("America/New_York");
EXPECT_EQ(timezone, 5 * 60 * 60);
EXPECT_EQ(altzone, 4 * 60 * 60);
EXPECT_EQ(daylight, 1);
EXPECT_EQ(tzname[0], "EST"sv);
EXPECT_EQ(tzname[1], "EDT"sv);
set_tz("America/Phoenix");
EXPECT_EQ(timezone, 7 * 60 * 60);
EXPECT_EQ(altzone, 7 * 60 * 60);
EXPECT_EQ(daylight, 0);
EXPECT_EQ(tzname[0], "MST"sv);
EXPECT_EQ(tzname[1], "MST"sv);
set_tz("America/Asuncion");
EXPECT_EQ(timezone, 4 * 60 * 60);
EXPECT_EQ(altzone, 3 * 60 * 60);
EXPECT_EQ(daylight, 1);
EXPECT_EQ(tzname[0], "-04"sv);
EXPECT_EQ(tzname[1], "-03"sv);
set_tz("CET");
EXPECT_EQ(timezone, -1 * 60 * 60);
EXPECT_EQ(altzone, -2 * 60 * 60);
EXPECT_EQ(daylight, 1);
EXPECT_EQ(tzname[0], "CET"sv);
EXPECT_EQ(tzname[1], "CEST"sv);
}