chore: establish project baseline

central/tests/test_tipi.py

@@ -0,0 +1,29 @@
+from io import BytesIO
+
+import openpyxl
+
+
+def test_tipi_parser_requires_official_columns_and_reads_ncm_rows():
+    from central.app.datasets.tipi import parse_tipi_xlsx
+
+    workbook = openpyxl.Workbook()
+    sheet = workbook.active
+    sheet.append(["NCM", "EX", "DESCRIÇÃO", "ALÍQUOTA (%)"])
+    sheet.append(["0101.21.00", None, "Reprodutores", "0"])
+    raw = BytesIO(); workbook.save(raw)
+
+    payload = parse_tipi_xlsx(raw.getvalue())
+
+    assert payload.entries[0].ncm == "01012100"
+    assert payload.entries[0].rate == "0"
+
+
+def test_tipi_parser_preserves_ex_in_the_ncm_key():
+    from central.app.datasets.tipi import parse_tipi_xlsx
+    workbook = openpyxl.Workbook(); sheet = workbook.active
+    sheet.append(["NCM", "EX", "DESCRIÇÃO", "ALÍQUOTA (%)"])
+    sheet.append(["0101.21.00", "01", "Com EX", "NT"])
+    raw = BytesIO(); workbook.save(raw)
+    entry = parse_tipi_xlsx(raw.getvalue()).entries[0]
+    assert entry.ex == "01"
+    assert entry.rate == "NT"