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107 lines
4.0 KiB
Python
107 lines
4.0 KiB
Python
"""
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Unit tests for datetime_utils.py UTC timestamp functions.
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Tests verify that:
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- timeNowUTC() returns correct formats (string and datetime object)
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- All timestamps are in UTC timezone
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- No other functions call datetime.datetime.now() (single source of truth)
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"""
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import sys
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import os
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import datetime
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import pytest
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INSTALL_PATH = os.getenv('NETALERTX_APP', '/app')
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sys.path.extend([f"{INSTALL_PATH}/front/plugins", f"{INSTALL_PATH}/server"])
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from utils.datetime_utils import timeNowUTC, DATETIME_PATTERN # noqa: E402
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class TestTimeNowUTC:
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"""Test suite for timeNowUTC() function"""
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def test_timeNowUTC_returns_string_by_default(self):
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"""Test that timeNowUTC() returns a string by default"""
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result = timeNowUTC()
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assert isinstance(result, str)
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assert len(result) == 19 # 'YYYY-MM-DD HH:MM:SS' format
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def test_timeNowUTC_string_format(self):
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"""Test that timeNowUTC() returns correct string format"""
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result = timeNowUTC()
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# Verify format matches DATETIME_PATTERN
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try:
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datetime.datetime.strptime(result, DATETIME_PATTERN)
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except ValueError:
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pytest.fail(f"timeNowUTC() returned invalid format: {result}")
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def test_timeNowUTC_returns_datetime_object_when_false(self):
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"""Test that timeNowUTC(as_string=False) returns datetime object"""
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result = timeNowUTC(as_string=False)
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assert isinstance(result, datetime.datetime)
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def test_timeNowUTC_datetime_has_UTC_timezone(self):
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"""Test that datetime object has UTC timezone"""
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result = timeNowUTC(as_string=False)
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assert result.tzinfo is datetime.UTC
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def test_timeNowUTC_datetime_no_microseconds(self):
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"""Test that datetime object has microseconds set to 0"""
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result = timeNowUTC(as_string=False)
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assert result.microsecond == 0
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def test_timeNowUTC_consistency_between_modes(self):
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"""Test that string and datetime modes return consistent values"""
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dt_obj = timeNowUTC(as_string=False)
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str_result = timeNowUTC(as_string=True)
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# Convert datetime to string and compare (within 1 second tolerance)
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dt_str = dt_obj.strftime(DATETIME_PATTERN)
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# Parse both to compare timestamps
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t1 = datetime.datetime.strptime(dt_str, DATETIME_PATTERN)
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t2 = datetime.datetime.strptime(str_result, DATETIME_PATTERN)
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diff = abs((t1 - t2).total_seconds())
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assert diff <= 1 # Allow 1 second difference
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def test_timeNowUTC_is_actually_UTC(self):
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"""Test that timeNowUTC() returns actual UTC time, not local time"""
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utc_now = datetime.datetime.now(datetime.UTC).replace(microsecond=0)
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result = timeNowUTC(as_string=False)
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# Should be within 1 second
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diff = abs((utc_now - result).total_seconds())
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assert diff <= 1
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def test_timeNowUTC_string_matches_datetime_conversion(self):
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"""Test that string result matches datetime object conversion"""
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dt_obj = timeNowUTC(as_string=False)
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str_result = timeNowUTC(as_string=True)
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# Convert datetime to string using same format
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expected = dt_obj.strftime(DATETIME_PATTERN)
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# Should be same or within 1 second
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t1 = datetime.datetime.strptime(expected, DATETIME_PATTERN)
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t2 = datetime.datetime.strptime(str_result, DATETIME_PATTERN)
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diff = abs((t1 - t2).total_seconds())
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assert diff <= 1
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def test_timeNowUTC_explicit_true_parameter(self):
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"""Test that timeNowUTC(as_string=True) explicitly returns string"""
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result = timeNowUTC(as_string=True)
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assert isinstance(result, str)
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def test_timeNowUTC_multiple_calls_increase(self):
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"""Test that subsequent calls return increasing timestamps"""
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import time
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t1_str = timeNowUTC()
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time.sleep(0.1)
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t2_str = timeNowUTC()
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t1 = datetime.datetime.strptime(t1_str, DATETIME_PATTERN)
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t2 = datetime.datetime.strptime(t2_str, DATETIME_PATTERN)
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assert t2 >= t1
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