import pytest
from src.core.base import DataLog


def test_datalog_defaults():
    log = DataLog()
    assert log.time == 0.0
    assert log.value == ""


def test_datalog_with_values():
    log = DataLog(time=1.5, value="test")
    assert log.time == 1.5
    assert log.value == "test"


def test_datalog_equality():
    log1 = DataLog(time=1.0, value="a")
    log2 = DataLog(time=1.0, value="a")
    assert log1 == log2