| //===-- Unittests for asctime ---------------------------------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "src/errno/libc_errno.h" |
| #include "src/time/asctime.h" |
| #include "test/UnitTest/Test.h" |
| #include "test/src/time/TmHelper.h" |
| |
| static inline char *call_asctime(struct tm *tm_data, int year, int month, |
| int mday, int hour, int min, int sec, int wday, |
| int yday) { |
| __llvm_libc::tmhelper::testing::initialize_tm_data( |
| tm_data, year, month, mday, hour, min, sec, wday, yday); |
| return __llvm_libc::asctime(tm_data); |
| } |
| |
| TEST(LlvmLibcAsctime, Nullptr) { |
| char *result; |
| result = __llvm_libc::asctime(nullptr); |
| ASSERT_EQ(EINVAL, libc_errno); |
| ASSERT_STREQ(nullptr, result); |
| } |
| |
| // Weekdays are in the range 0 to 6. Test passing invalid value in wday. |
| TEST(LlvmLibcAsctime, InvalidWday) { |
| struct tm tm_data; |
| |
| // Test with wday = -1. |
| call_asctime(&tm_data, |
| 1970, // year |
| 1, // month |
| 1, // day |
| 0, // hr |
| 0, // min |
| 0, // sec |
| -1, // wday |
| 0); // yday |
| ASSERT_EQ(EINVAL, libc_errno); |
| |
| // Test with wday = 7. |
| call_asctime(&tm_data, |
| 1970, // year |
| 1, // month |
| 1, // day |
| 0, // hr |
| 0, // min |
| 0, // sec |
| 7, // wday |
| 0); // yday |
| ASSERT_EQ(EINVAL, libc_errno); |
| } |
| |
| // Months are from January to December. Test passing invalid value in month. |
| TEST(LlvmLibcAsctime, InvalidMonth) { |
| struct tm tm_data; |
| |
| // Test with month = 0. |
| call_asctime(&tm_data, |
| 1970, // year |
| 0, // month |
| 1, // day |
| 0, // hr |
| 0, // min |
| 0, // sec |
| 4, // wday |
| 0); // yday |
| ASSERT_EQ(EINVAL, libc_errno); |
| |
| // Test with month = 13. |
| call_asctime(&tm_data, |
| 1970, // year |
| 13, // month |
| 1, // day |
| 0, // hr |
| 0, // min |
| 0, // sec |
| 4, // wday |
| 0); // yday |
| ASSERT_EQ(EINVAL, libc_errno); |
| } |
| |
| TEST(LlvmLibcAsctime, ValidWeekdays) { |
| struct tm tm_data; |
| char *result; |
| // 1970-01-01 00:00:00. |
| result = call_asctime(&tm_data, |
| 1970, // year |
| 1, // month |
| 1, // day |
| 0, // hr |
| 0, // min |
| 0, // sec |
| 4, // wday |
| 0); // yday |
| ASSERT_STREQ("Thu Jan 1 00:00:00 1970\n", result); |
| |
| // 1970-01-03 00:00:00. |
| result = call_asctime(&tm_data, |
| 1970, // year |
| 1, // month |
| 3, // day |
| 0, // hr |
| 0, // min |
| 0, // sec |
| 6, // wday |
| 0); // yday |
| ASSERT_STREQ("Sat Jan 3 00:00:00 1970\n", result); |
| |
| // 1970-01-04 00:00:00. |
| result = call_asctime(&tm_data, |
| 1970, // year |
| 1, // month |
| 4, // day |
| 0, // hr |
| 0, // min |
| 0, // sec |
| 0, // wday |
| 0); // yday |
| ASSERT_STREQ("Sun Jan 4 00:00:00 1970\n", result); |
| } |
| |
| TEST(LlvmLibcAsctime, ValidMonths) { |
| struct tm tm_data; |
| char *result; |
| // 1970-01-01 00:00:00. |
| result = call_asctime(&tm_data, |
| 1970, // year |
| 1, // month |
| 1, // day |
| 0, // hr |
| 0, // min |
| 0, // sec |
| 4, // wday |
| 0); // yday |
| ASSERT_STREQ("Thu Jan 1 00:00:00 1970\n", result); |
| |
| // 1970-02-01 00:00:00. |
| result = call_asctime(&tm_data, |
| 1970, // year |
| 2, // month |
| 1, // day |
| 0, // hr |
| 0, // min |
| 0, // sec |
| 0, // wday |
| 0); // yday |
| ASSERT_STREQ("Sun Feb 1 00:00:00 1970\n", result); |
| |
| // 1970-12-31 23:59:59. |
| result = call_asctime(&tm_data, |
| 1970, // year |
| 12, // month |
| 31, // day |
| 23, // hr |
| 59, // min |
| 59, // sec |
| 4, // wday |
| 0); // yday |
| ASSERT_STREQ("Thu Dec 31 23:59:59 1970\n", result); |
| } |
| |
| TEST(LlvmLibcAsctime, EndOf32BitEpochYear) { |
| struct tm tm_data; |
| char *result; |
| // Test for maximum value of a signed 32-bit integer. |
| // Test implementation can encode time for Tue 19 January 2038 03:14:07 UTC. |
| result = call_asctime(&tm_data, |
| 2038, // year |
| 1, // month |
| 19, // day |
| 3, // hr |
| 14, // min |
| 7, // sec |
| 2, // wday |
| 7); // yday |
| ASSERT_STREQ("Tue Jan 19 03:14:07 2038\n", result); |
| } |
| |
| TEST(LlvmLibcAsctime, Max64BitYear) { |
| if (sizeof(time_t) == 4) |
| return; |
| // Mon Jan 1 12:50:50 2170 (200 years from 1970), |
| struct tm tm_data; |
| char *result; |
| result = call_asctime(&tm_data, |
| 2170, // year |
| 1, // month |
| 1, // day |
| 12, // hr |
| 50, // min |
| 50, // sec |
| 1, // wday |
| 50); // yday |
| ASSERT_STREQ("Mon Jan 1 12:50:50 2170\n", result); |
| |
| // Test for Tue Jan 1 12:50:50 in 2,147,483,647th year. |
| // This test would cause buffer overflow and thus asctime returns nullptr. |
| result = call_asctime(&tm_data, |
| 2147483647, // year |
| 1, // month |
| 1, // day |
| 12, // hr |
| 50, // min |
| 50, // sec |
| 2, // wday |
| 50); // yday |
| ASSERT_EQ(EOVERFLOW, libc_errno); |
| ASSERT_STREQ(nullptr, result); |
| } |