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ThearchyHelios
206 lines
11 KiB
Python
206 lines
11 KiB
Python
"""数据剖析（阶段 2A）里不连库的部分：设置的解析与校验、SQL 字面量、各方言的剖析 SQL 都过得了守卫、
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目录对剖析结果的容纳（待填含义的码值、撤销审阅回到剖析的结论）。"""
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from __future__ import annotations
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from types import SimpleNamespace
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import pytest
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from app.data import catalog, catalog_profile, guard
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from app.data.catalog import make_item
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from app.data.catalog_profile import PROFILE_OPTION, ProfileSettings, profile_settings, profile_settings_problem
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from app.data.engine import build_url
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AT = "2026-10-03T08:00:00+00:00"
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# ---------------------------------------------------------------- 设置
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def test_settings_default_off_and_parse_leniently():
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s = profile_settings({})
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assert s == ProfileSettings()
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assert s.enabled is False and s.max_queries == 60 and s.query_timeout_s == 10 and s.sample_size == 2000
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assert s.max_scan_rows == 100_000 and s.max_total_s == 120
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on = profile_settings({PROFILE_OPTION: {"enabled": True, "max_queries": "30", "sample_size": 500}})
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assert on.enabled is True and on.max_queries == 30 and on.sample_size == 500
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# 库里存着的值不对（老数据、手改过）：那一项用缺省，不因此开启，也不报错
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odd = profile_settings({PROFILE_OPTION: {"enabled": "yes", "max_queries": 0, "query_timeout_s": "x"}})
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assert odd.enabled is False and odd.max_queries == 60 and odd.query_timeout_s == 10
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assert profile_settings({PROFILE_OPTION: "on"}) == ProfileSettings()
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@pytest.mark.parametrize("value, label", [
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({"max_queries": 0}, "查询次数上限"),
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({"max_queries": 501}, "查询次数上限"),
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({"max_queries": 2.5}, "查询次数上限"),
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({"query_timeout_s": 61}, "单条查询时限"),
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({"sample_size": 5}, "抽样键值数"),
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({"max_scan_rows": -1}, "整表统计行数上限"),
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({"max_total_s": 5}, "总时长上限"),
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({"enabled": "true"}, "开启数据剖析"),
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({"max_queries": True}, "查询次数上限"),
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])
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def test_settings_problem_names_the_field_in_chinese(value, label):
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problem = profile_settings_problem({PROFILE_OPTION: value})
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assert problem and label in problem and "数据剖析" in problem
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def test_settings_problem_rejects_unknown_keys_and_wrong_shape():
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assert "无法识别" in profile_settings_problem({PROFILE_OPTION: {"enabled": True, "rows": 1}})
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assert profile_settings_problem({PROFILE_OPTION: ["enabled"]})
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assert profile_settings_problem({}) is None
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assert profile_settings_problem({PROFILE_OPTION: None}) is None
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assert profile_settings_problem({PROFILE_OPTION: {"enabled": True, "max_queries": 500, "query_timeout_s": 1.5,
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"sample_size": 10, "max_scan_rows": 0,
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"max_total_s": 600}}) is None
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def test_profile_option_never_reaches_the_connection_url():
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"""剖析设置是 AgentLab 自己的配置：拼进连接串，驱动会把它当未知参数拒掉。"""
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source = SimpleNamespace(kind="mysql", host="db.example", port=3306, database="shop", username="ro",
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password=None, options={"charset": "utf8mb4", PROFILE_OPTION: {"enabled": True}})
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url = build_url(source)
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assert "charset=utf8mb4" in url and PROFILE_OPTION not in url and "enabled" not in url
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# ---------------------------------------------------------------- 字面量
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@pytest.mark.parametrize("value, kind, expected", [
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(42, "number", "42"),
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(-7, None, "-7"),
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(3.0, "number", "3"),
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("12345678901234567890", "number", "12345678901234567890"), # DECIMAL 经查询层转成了字符串
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("A-01", "text", "'A-01'"),
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("O'Neil", "text", "'O''Neil'"),
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("12:30", "text", "'12:30'"),
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])
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def test_sql_literal_quotes_safe_values(value, kind, expected):
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assert catalog_profile.sql_literal(value, kind) == expected
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@pytest.mark.parametrize("value, kind", [
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(True, "boolean"), # 布尔不当键
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(2.5, "number"), # 非整数的数不当键：浮点相等比较靠不住
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("12.50", "number"),
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("1e3", "number"),
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("2026-07-01", "date"), # 日期的字面量各家写法不同，不猜
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("a\\b", "text"), # 反斜杠：MySQL 不同设置下读法不同，守卫会拒
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("a :b", "text"), # 「:名字」会被查询层当成绑定参数
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(":b", "text"),
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("a\nb", "text"), # 控制字符
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("x" * 201, "text"),
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(None, "text"),
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([1], None),
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])
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def test_sql_literal_refuses_unsafe_or_unsupported_values(value, kind):
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assert catalog_profile.sql_literal(value, kind) is None
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# ---------------------------------------------------------------- 各方言的剖析 SQL
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_META = {"visits": {"schema": None, "columns": [{"name": "memberTagId", "type": "INTEGER"}], "primary_key": ["id"]},
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"orders": {"schema": "sales", "columns": [{"name": "status", "type": "INTEGER"}], "primary_key": ["id"]}}
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@pytest.mark.parametrize("kind", ["mysql", "mariadb", "postgresql", "oracle", "sqlite"])
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def test_profile_sql_passes_readonly_guard_on_every_dialect(kind):
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"""剖析的每一种查询（含读统计信息的系统视图）都得过只读守卫——守卫不为剖析放宽。"""
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d = catalog_profile.SqlDialect(kind)
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sqls = []
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for table in ("visits", "orders"):
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stats = d.stats_sql(_META[table], table)
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if kind == "sqlite":
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assert stats is None # SQLite 没有可读的统计信息，改为数到上限
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else:
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assert stats
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sqls.append(stats)
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tbl = d.table(_META[table], table)
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col = d.quote(_META[table]["columns"][0]["name"])
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sqls += [
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d.bounded_count_sql(tbl, 100_001),
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d.distinct_sample_sql(tbl, col, 2000, scan_cap=None),
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d.distinct_sample_sql(tbl, col, 2000, scan_cap=100_000),
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d.match_count_sql(tbl, col, ["1", "'A'"]),
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d.unique_check_sql(tbl, col),
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d.value_counts_sql(tbl, col, 21, scan_cap=None),
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d.value_counts_sql(tbl, col, 21, scan_cap=100_000),
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d.min_max_sql(tbl, [col]),
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]
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for sql in sqls:
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assert guard.check(sql, readonly=True, dialect=kind) == sql, sql
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def test_dialect_quoting_and_row_limits():
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my, ora, pg = (catalog_profile.SqlDialect(k) for k in ("mysql", "oracle", "postgresql"))
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assert my.quote("memberTagId") == "`memberTagId`" and pg.quote("memberTagId") == '"memberTagId"'
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assert my.table(_META["orders"], "orders") == "sales.orders"
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assert pg.table({"schema": "Sales"}, "memberTags") == '"Sales"."memberTags"'
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# Oracle 没有 LIMIT（11g 也没有 FETCH FIRST）：一律用 ROWNUM
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sample = ora.distinct_sample_sql("visits", '"memberTagId"', 50, scan_cap=None)
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assert "LIMIT" not in sample and "ROWNUM <= 50" in sample
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assert "LIMIT 50" in pg.distinct_sample_sql("visits", "x", 50, scan_cap=None)
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# 统计信息按方言读各自的系统视图
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assert "information_schema.TABLES" in my.stats_sql(_META["visits"], "visits")
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assert "pg_class" in pg.stats_sql(_META["visits"], "visits")
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stats = ora.stats_sql(_META["orders"], "orders")
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assert "ALL_TABLES" in stats and "'ORDERS'" in stats and "'SALES'" in stats
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# ---------------------------------------------------------------- 目录对剖析结果的容纳
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def test_codes_with_pending_meanings_are_valid_and_render_as_pending():
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"""剖析得到的码值只有取值、含义待人填写：目录要收得下，给模型看时写明含义待填写。"""
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notes = {"columns": {"status": {"codes": make_item({"1": "", "0": ""}, "profile", "proposed")},
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"channel": {"codes": make_item({"WEB": "官网", "BOX": ""}, "profile", "proposed")}}}
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assert catalog.validate_notes(notes) == []
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text = catalog.render_table_notes(notes)
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assert "1、0（含义待填写）" in text
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assert "WEB=官网，BOX 的含义待填写" in text
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# 码值仍得是对照表：值不是文字的照样拒收
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assert catalog.validate_notes({"columns": {"s": {"codes": make_item({"1": 2}, "profile")}}})
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def _profile_rel(coverage, cardinality, status):
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return {"id": catalog.relation_id("visits", ["gate_id"], "gates", ["id"]), "columns": ["gate_id"],
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"to_table": "gates", "to_columns": ["id"], "cardinality": cardinality, "coverage": coverage,
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"source": "profile", "status": status}
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def test_reset_returns_profile_relation_to_what_profiling_concluded():
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"""撤销审阅回到「来源的初始状态」。剖析的结论随数据而定：覆盖率够、父键唯一（基数有值）就是有确证。"""
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verified = {"relations": [_profile_rel(1.0, "many_to_one", "verified")]}
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rid = verified["relations"][0]["id"]
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out = catalog.review_item(verified, f"relations.{rid}", "confirm", at=AT)
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assert out["relations"][0]["status"] == "confirmed"
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out = catalog.review_item(out, f"relations.{rid}", "reset", at=AT)
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assert out["relations"][0]["status"] == "verified"
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out = catalog.review_item(catalog.review_item(out, f"relations.{rid}", "reject", at=AT),
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f"relations.{rid}", "reset", at=AT)
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assert out["relations"][0]["status"] == "verified"
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# 覆盖率低、父键没核实唯一的：撤销后仍是推断
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for coverage, cardinality in ((0.62, "many_to_one"), (1.0, None)):
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low = {"relations": [_profile_rel(coverage, cardinality, "proposed")]}
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out = catalog.review_item(catalog.review_item(low, f"relations.{rid}", "confirm", at=AT),
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f"relations.{rid}", "reset", at=AT)
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assert out["relations"][0]["status"] == "proposed"
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# 剖析提的码值候选、业务日期永远是推断
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codes = {"columns": {"status": {"codes": make_item({"1": ""}, "profile", "proposed")}}}
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out = catalog.review_item(catalog.review_item(codes, "columns.status.codes", "confirm", at=AT),
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"columns.status.codes", "reset", at=AT)
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assert out["columns"]["status"]["codes"]["status"] == "proposed"
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def test_human_edit_may_restore_profile_conclusion_but_not_invent_one():
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rel = _profile_rel(1.0, "many_to_one", "confirmed")
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existing = {"relations": [rel]}
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back = catalog.apply_human_edit(existing, {"relations": [{**rel, "status": "verified"}]}, table="visits", at=AT)
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assert back["relations"][0]["status"] == "verified" and back["relations"][0]["source"] == "profile"
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low = _profile_rel(0.4, "many_to_one", "proposed")
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kept = catalog.apply_human_edit({"relations": [low]}, {"relations": [{**low, "status": "verified"}]},
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table="visits", at=AT)
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assert kept["relations"][0]["status"] == "proposed"
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