"""Scenario `drop_tables` 配置解析测试。

用于覆盖「表缺失导致 OPEN CURSOR 失败」的错误分支（如 SHA02MNC #5 T：
EMP-OPEN SQLCODE≠0）。机制通用：任一程序可在场景里声明要 DROP 的表，
运行时 OPEN 该表即失败 → SQL 错误分支可达。
"""

import sys, os
sys.path.insert(0, os.path.abspath(os.path.join(os.path.dirname(__file__), "..", "..")))
from config.program_schema import ProgramSchema

_YAML = """
program_id: SHA02MNC
db_type: SQLite
db_name: INSURANCEDB.db
db_tables:
  - name: EMP_MASTER
    columns:
      - name: EMP_ID
        type: CHAR(8)
        primary_key: true
runs:
  - id: normal
  - id: emp_open_fail
    drop_tables: [EMP_MASTER]
    inject_duplicate_pk: false
"""


def test_drop_tables_parsed_from_yaml(tmp_path):
    p = tmp_path / "SHA02MNC.yaml"
    p.write_text(_YAML, encoding="utf-8")
    schema = ProgramSchema.from_yaml(p)
    assert len(schema.runs) == 2
    fail = schema.runs[1]
    assert fail.id == "emp_open_fail"
    assert fail.drop_tables == ["EMP_MASTER"]