afterhours-shift-manager/tests/slack_bot/test_parse_date.py

"""Tests for slack-bot parse_date — flexible date parsing."""

from freezegun import freeze_time

# All frozen to Monday 2026-06-01 (ET 08:00).
FROZEN = "2026-06-01 12:00:00"


@freeze_time(FROZEN)
def test_today(slackbot_app):
    assert slackbot_app.parse_date("today").strftime("%Y-%m-%d") == "2026-06-01"


@freeze_time(FROZEN)
def test_tomorrow(slackbot_app):
    assert slackbot_app.parse_date("tomorrow").strftime("%Y-%m-%d") == "2026-06-02"


@freeze_time(FROZEN)
def test_future_day_name(slackbot_app):
    # Friday of the same week.
    assert slackbot_app.parse_date("friday").strftime("%Y-%m-%d") == "2026-06-05"


@freeze_time(FROZEN)
def test_same_day_name_jumps_a_week(slackbot_app):
    # Monday on a Monday → next Monday, never today.
    assert slackbot_app.parse_date("monday").strftime("%Y-%m-%d") == "2026-06-08"


@freeze_time(FROZEN)
def test_iso_date(slackbot_app):
    assert slackbot_app.parse_date("2026-07-04").strftime("%Y-%m-%d") == "2026-07-04"


@freeze_time(FROZEN)
def test_month_slash_day(slackbot_app):
    assert slackbot_app.parse_date("7/4").strftime("%Y-%m-%d") == "2026-07-04"


@freeze_time(FROZEN)
def test_month_dash_day(slackbot_app):
    assert slackbot_app.parse_date("7-4").strftime("%Y-%m-%d") == "2026-07-04"


@freeze_time(FROZEN)
def test_past_month_day_wraps_to_next_year(slackbot_app):
    # Jan 1 is well in the past → assume next year.
    assert slackbot_app.parse_date("1/1").year == 2027


@freeze_time(FROZEN)
def test_case_insensitive(slackbot_app):
    assert slackbot_app.parse_date("  FRIDAY ").strftime("%Y-%m-%d") == "2026-06-05"


@freeze_time(FROZEN)
def test_two_digit_year_slash(slackbot_app):
    assert slackbot_app.parse_date("7/3/26").strftime("%Y-%m-%d") == "2026-07-03"


@freeze_time(FROZEN)
def test_two_digit_year_padded(slackbot_app):
    assert slackbot_app.parse_date("07/03/26").strftime("%Y-%m-%d") == "2026-07-03"


@freeze_time(FROZEN)
def test_two_digit_year_dash(slackbot_app):
    assert slackbot_app.parse_date("7-3-26").strftime("%Y-%m-%d") == "2026-07-03"


@freeze_time(FROZEN)
def test_four_digit_year_dash(slackbot_app):
    assert slackbot_app.parse_date("7-3-2026").strftime("%Y-%m-%d") == "2026-07-03"


@freeze_time(FROZEN)
def test_two_digit_year_century_boundary(slackbot_app):
    # Python's %y maps 00–68 → 2000s and 69–99 → 1900s. Pin it so nobody
    # "fixes" the ambiguity by accident later.
    assert slackbot_app.parse_date("12/31/99").year == 1999
    assert slackbot_app.parse_date("1/1/68").year == 2068


@freeze_time(FROZEN)
def test_two_digit_year_past_not_rolled(slackbot_app):
    # Explicit two-digit year in the past stays put — no roll-forward.
    assert slackbot_app.parse_date("1/1/26").strftime("%Y-%m-%d") == "2026-01-01"


@freeze_time(FROZEN)
def test_month_name_short(slackbot_app):
    assert slackbot_app.parse_date("jul 3").strftime("%Y-%m-%d") == "2026-07-03"


@freeze_time(FROZEN)
def test_month_name_full(slackbot_app):
    assert slackbot_app.parse_date("july 3").strftime("%Y-%m-%d") == "2026-07-03"


@freeze_time(FROZEN)
def test_month_name_with_year(slackbot_app):
    assert slackbot_app.parse_date("july 3 2026").strftime("%Y-%m-%d") == "2026-07-03"


@freeze_time(FROZEN)
def test_month_name_ordinal(slackbot_app):
    assert slackbot_app.parse_date("july 3rd").strftime("%Y-%m-%d") == "2026-07-03"


@freeze_time(FROZEN)
def test_month_name_past_wraps_to_next_year(slackbot_app):
    # Year-less month name in the past rolls forward, like m/d.
    assert slackbot_app.parse_date("jan 1").year == 2027


@freeze_time(FROZEN)
def test_eastern_tz_stamped(slackbot_app):
    assert slackbot_app.parse_date("7/3/26").tzinfo is not None


@freeze_time(FROZEN)
def test_invalid_returns_none(slackbot_app):
    assert slackbot_app.parse_date("notaday") is None