dodil/erp-brick-tax

DODIL ERP brick: tax

tests/test_schema.py

"""schema.sql and the tables in infrastructure/tables.py are one column model: they must not drift."""
import pathlib
import re

from brick_tax.infrastructure.tables import md

SRC = pathlib.Path(__file__).resolve().parents[1] / "src" / "brick_tax"


def expected_columns(sql: str) -> dict:
    """table -> [column], as a schema file declares it (erp_platform.migrate's reading, without a BUCKET)."""
    out = {}
    for name, body in re.findall(r"CREATE TABLE IF NOT EXISTS (\w+) \(\n(.*?)\n\);", sql, re.S):
        lines = [ln.strip() for ln in body.splitlines()]
        out[name] = [ln.split()[0] for ln in lines if ln and not ln.startswith(("PRIMARY KEY", "--"))]
    return out


def test_schema_sql_is_the_tables():
    declared = expected_columns((SRC / "schema.sql").read_text())
    assert declared == {t.name: [c.name for c in t.columns] for t in md.sorted_tables}


def test_the_first_migration_creates_the_same_tables():
    up = expected_columns((SRC / "migrations" / "00001_init" / "up.sql").read_text())
    later = expected_columns((SRC / "migrations" / "00002_audit1" / "up.sql").read_text())      # the table 00002 adds
    v4 = expected_columns((SRC / "migrations" / "00003_v4" / "up.sql").read_text())               # the tables 00003 adds
    v6 = expected_columns((SRC / "migrations" / "00004_v6" / "up.sql").read_text())               # the table 00004 adds
    assert {t.name for t in md.sorted_tables} <= set(up) | set(later) | set(v4) | set(v6)


def test_every_table_is_prefixed_and_keyed_and_nothing_is_serial():
    for t in md.sorted_tables:
        assert t.name.startswith("tax_"), t.name
        assert list(t.primary_key.columns), t.name
    code = "\n".join(ln for ln in (SRC / "schema.sql").read_text().splitlines() if not ln.startswith("--"))
    assert "SERIAL" not in code.upper()