xlsx/cell-alignment

Metadata

XPath assertions

Render assertions

Generator source

scripts/gen_cell_alignment.py

#!/usr/bin/env python3
"""Generate ``fixtures/xlsx/cell-alignment.xlsx``.

A minimal one-sheet workbook with cell A1 containing ``Centered cell``
formatted with horizontal and vertical center alignment. Designed to
satisfy the assertions in ``features/xlsx/cell-alignment.json``.
"""

from __future__ import annotations

from pathlib import Path

from xlsx import Workbook
from xlsx.styles import Alignment

import datetime as _dt
_REPRODUCIBLE_DT = _dt.datetime(2000, 1, 1, 0, 0, 0)

_REPO_ROOT = Path(__file__).resolve().parent.parent
_OUT = _REPO_ROOT / "fixtures" / "xlsx" / "cell-alignment.xlsx"


def main() -> int:
    wb = Workbook()
    ws = wb.active
    ws["A1"] = "Centered cell"
    ws["A1"].alignment = Alignment(horizontal="center", vertical="center")
    _OUT.parent.mkdir(parents=True, exist_ok=True)
    wb.save(_OUT, zip_date_time=_REPRODUCIBLE_DT)
    print(_OUT)
    return 0


if __name__ == "__main__":
    raise SystemExit(main())

Manifest (expanded)

{
  "$schema": "../manifest.schema.json",
  "id": "xlsx/cell-alignment",
  "title": "Cell alignment (horizontal + vertical center)",
  "format": "xlsx",
  "category": "cell-formatting",
  "summary": "A workbook defines a cellXfs entry with an <alignment> child declaring horizontal and vertical centering and applies it to cell A1.",
  "spec": {
    "source": "ecma-376-5-part-1",
    "clause": "18.8.1",
    "element": "alignment",
    "rnc_reference": "spec/ecma-376-5/part-1/rnc/SpreadsheetML.rnc",
    "xsd_reference": "spec/ecma-376-5/part-1/xsd/sml.xsd",
    "notes": "Alignment in SpreadsheetML lives on a <xf> entry in xl/styles.xml's <cellXfs> table as an <alignment horizontal=\"...\" vertical=\"...\"/> child. A cell with t=\"s\" and a matching s=\"...\" xfId then inherits that alignment. The assertion here checks the simpler shape: at least one <xf> in <cellXfs> has an <alignment> child with horizontal='center' and (separately) vertical='center'. SpreadsheetML parts use a default namespace with no prefix; XPath therefore needs an explicit binding (here 'x'). Content of cell A1 appears in xl/sharedStrings.xml as an <si><t>Centered cell</t></si> entry."
  },
  "fixtures": {
    "machine": "xlsx/cell-alignment",
    "office": "xlsx/cell-alignment"
  },
  "generator": {
    "python": "scripts/gen_cell_alignment.py"
  },
  "assertions": [
    {
      "id": "cellxf-horizontal-center",
      "part": "xl/styles.xml",
      "namespaces": {
        "x": "http://schemas.openxmlformats.org/spreadsheetml/2006/main"
      },
      "xpath": "//x:cellXfs/x:xf[x:alignment/@horizontal='center']",
      "must": "exist",
      "description": "At least one <xf> in <cellXfs> must declare an <alignment> child with horizontal='center'."
    },
    {
      "id": "cellxf-vertical-center",
      "part": "xl/styles.xml",
      "namespaces": {
        "x": "http://schemas.openxmlformats.org/spreadsheetml/2006/main"
      },
      "xpath": "//x:cellXfs/x:xf[x:alignment/@vertical='center']",
      "must": "exist",
      "description": "At least one <xf> in <cellXfs> must declare an <alignment> child with vertical='center'."
    },
    {
      "id": "shared-string-present",
      "part": "xl/sharedStrings.xml",
      "namespaces": {
        "x": "http://schemas.openxmlformats.org/spreadsheetml/2006/main"
      },
      "xpath": "//x:sst/x:si/x:t[normalize-space()='Centered cell']",
      "must": "exist",
      "description": "The shared-strings table must contain 'Centered cell'."
    }
  ],
  "render_assertions": [
    {
      "id": "cell-alignment-text-present",
      "kind": "css_selector",
      "selector": "section.xlsx td, section.xlsx th",
      "must": "match-text",
      "value": "Centered cell",
      "description": "The rendered sheet must contain a cell with the fixture text."
    },
    {
      "id": "cell-alignment-is-centered",
      "kind": "computed_style",
      "selector": "section.xlsx td, section.xlsx th",
      "style_property": "text-align",
      "value": "^center$",
      "description": "The computed text-align on the cell must be 'center'."
    },
    {
      "id": "sheet-count",
      "kind": "css_selector",
      "selector": "section.xlsx",
      "must": "equal-count",
      "count": 1,
      "description": "Exactly one rendered sheet section. Catches renderers that emit zero sheets (hard failure) or duplicate a sheet."
    }
  ]
}