tests/utils/test_weight_rule.py

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from __future__ import annotations

import pytest

from airflow.utils.weight_rule import WeightRule


class TestWeightRule:
    def test_valid_weight_rules(self):
        assert WeightRule.is_valid(WeightRule.DOWNSTREAM)
        assert WeightRule.is_valid(WeightRule.UPSTREAM)
        assert WeightRule.is_valid(WeightRule.ABSOLUTE)
        assert len(WeightRule.all_weight_rules()) == 3

        with pytest.raises(ValueError):
            WeightRule("NOT_EXIST_WEIGHT_RULE")