Class TestHighDecayRate

tests/test_content_value.py:216–232

CONTROL 类型 beta=0.5 下的快速衰减场景。

# --------------------------------------------------------------------------- #

class TestHighDecayRate:
    """CONTROL 类型 beta=0.5 下的快速衰减场景。"""

    def test_control_decay_sharp(self):
        """CONTROL 类型 10 秒后价值应衰减至约 base_value * exp(-5) ≈ 1%。"""
        task = _make_task("CONTROL", creation_time=0.0)
        v10 = task.get_dynamic_value(10.0)
        expected = task.base_value * math.exp(-0.5 * 10.0)
        assert v10 == pytest.approx(expected, rel=1e-9)
        # 10 秒后保留约 0.67% 初始价值
        assert v10 < task.base_value * 0.01

    def test_control_near_zero_after_long_time(self):
        """CONTROL 类型经过足够长时间后价值应趋近于零。"""
        task = _make_task("CONTROL", creation_time=0.0)
        v_late = task.get_dynamic_value(100.0)
        assert v_late < 1e-15