Source

`tests/purrc/datetime_sys_test.cpp`

2// Original work; see ACKNOWLEDGMENTS.md for the open-source ideas we build upon.

3// System-level test for the cheatah `datetime` module: a single cohesive .purr

4// program that exercises EVERY public function in stdlib/datetime/datetime.hpp

5// (timestamp, now, utcnow, today, format, year, month, day, hour, minute,

6// second, weekday), compiles it with purrc into a loadable module, runs it

7// under the cheatah runtime (TZ=UTC), and asserts the exact stdout.

8//

9// The current-time functions (timestamp/now/utcnow/today) are

10// non-deterministic, so the program prints DETERMINISTIC PROPERTIES (sign /

11// string length). The component getters and `format` use the calendar in local

12// time, so they are pinned to a FIXED epoch (0.0 = 1970-01-01 00:00:00 UTC) and

13// run under TZ=UTC (the 4th expect_e2e arg) to be fully deterministic.

14// Complements the in-process unit tests (stdlib/tests/datetime_test.cpp) and

15// the per-function compile-run tests (tests/purrc/datetime_cr_test.cpp).

16#include "e2e_harness.hpp"

18TEST(StdlibE2E, Datetime) {

19 e2e::expect_e2e("datetime_sys", R"PURR(import io

20import datetime

22# Current-time functions are non-deterministic; assert stable properties.

23io.print(datetime.timestamp() > 0.0)

24io.print(len(datetime.now()) == 19)

25io.print(len(datetime.utcnow()) == 20)

26io.print(len(datetime.today()) == 10)

28# Fixed epoch (0.0 = 1970-01-01 00:00:00 UTC) under TZ=UTC is fully deterministic.

29io.print(datetime.format(0.0, "%Y-%m-%d %H:%M:%S"))

30io.print(datetime.year(0.0), datetime.month(0.0), datetime.day(0.0))

31io.print(datetime.hour(0.0), datetime.minute(0.0), datetime.second(0.0))

32io.print(datetime.weekday(0.0))

33)PURR",

34 "True\n"

35 "True\n"

36 "True\n"

37 "True\n"

38 "1970-01-01 00:00:00\n"

39 "1970 1 1\n"

40 "0 0 0\n"

41 "3\n",

42 "TZ=UTC ");

43}