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A functional toolkit for authoring resource-leveling algorithms — compose constraint and scoring blocks, enumerate feasible schedules
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209import { test, expect, describe } from "bun:test";import { existsSync } from "node:fs";import { mkdtemp, rm, writeFile } from "node:fs/promises";import { tmpdir } from "node:os";import { join } from "node:path";
import ExcelJS from "exceljs";
import { XlsxWriter, type SheetSpec } from "../../src/xlsx/XlsxWriter.ts";
// LibreOffice headless is the recalculation oracle (formula cells are// written without cached results). Skip recalc assertions when absent.const SOFFICE = Bun.which("soffice") ?? (existsSync("/Applications/LibreOffice.app/Contents/MacOS/soffice") ? "/Applications/LibreOffice.app/Contents/MacOS/soffice" : null);
/** Pricing-style sheet exercising the req-13 open-slot mechanism: the * named range $B$2:$B$5 spans three data rows plus a blank open-slot row, * and the total row sums the *name*, not a cell range. */function makePricingSpec(): SheetSpec { return { name: "Pricing", rows: [ [ { value: "Item", style: "header" }, { value: "Amount", style: "header" }, ], [{ value: "Install" }, { value: 10, style: "input", numFmt: "#,##0.00" }], [ { value: "Commission", note: "Rate held from 2025 master agreement" }, { value: 20, style: "input" }, ], [ { value: "Descoped extra", style: "muted" }, { value: 30, style: "muted" }, ], [{ value: "(open slot)" }, {}], [ { value: "Total", style: "derived" }, { formula: "SUM(Line_Amounts)", style: "derived" }, ], [ { value: "Margin floor", style: "internal" }, { value: 0.18, style: "internal" }, ], ], namedRanges: [{ name: "Line_Amounts", range: "Pricing!$B$2:$B$5" }], outlineRows: [{ from: 2, to: 5, level: 1 }], };}
async function loadWorkbook(buffer: Uint8Array): Promise<ExcelJS.Workbook> { const workbook = new ExcelJS.Workbook(); await workbook.xlsx.load(buffer); return workbook;}
function noteText(note: ExcelJS.Cell["note"]): string { if (typeof note === "string") return note; return (note?.texts ?? []).map((t) => t.text).join("");}
describe("XlsxWriter.writeSheets — formulas, names, notes, styles", () => { test.skipIf(!SOFFICE)( "=SUM(named_range) recalculates after a row insertion within the range", async () => { const buffer = await new XlsxWriter().writeSheets([makePricingSpec()]);
// Insert a row inside the named range. The static $B$2:$B$5 still // covers every data row because the blank open slot absorbs the shift. const workbook = await loadWorkbook(buffer); const sheet = workbook.getWorksheet("Pricing")!; sheet.insertRow(3, ["Inserted line", 15]);
const dir = await mkdtemp(join(tmpdir(), "levelset-recalc-")); try { const inPath = join(dir, "pricing.xlsx"); await writeFile( inPath, new Uint8Array(await workbook.xlsx.writeBuffer()), );
const proc = Bun.spawn( [ SOFFICE!, "--headless", "--convert-to", "xlsx", "--outdir", join(dir, "out"), inPath, ], { stdout: "pipe", stderr: "pipe" }, ); const exitCode = await proc.exited; expect(exitCode).toBe(0);
const converted = await loadWorkbook( new Uint8Array( await Bun.file(join(dir, "out", "pricing.xlsx")).arrayBuffer(), ), ); // Total row shifted from 6 to 7 by the insertion. const total = converted.getWorksheet("Pricing")!.getCell("B7"); expect(total.formula).toContain("Line_Amounts"); expect(total.result).toBe(10 + 15 + 20 + 30); } finally { await rm(dir, { recursive: true, force: true }); } }, 30000, );
test("formula cells survive a write/read round trip without cached results", async () => { const buffer = await new XlsxWriter().writeSheets([makePricingSpec()]); const workbook = await loadWorkbook(buffer); const cell = workbook.getWorksheet("Pricing")!.getCell("B6"); expect(cell.formula).toBe("SUM(Line_Amounts)"); });
test("named ranges land in workbook.definedNames", async () => { const buffer = await new XlsxWriter().writeSheets([makePricingSpec()]); const workbook = await loadWorkbook(buffer); const ranges = workbook.definedNames.getRanges("Line_Amounts"); expect(ranges.ranges).toEqual(["Pricing!$B$2:$B$5"]); });
test("cell notes survive the round trip", async () => { const buffer = await new XlsxWriter().writeSheets([makePricingSpec()]); const workbook = await loadWorkbook(buffer); const cell = workbook.getWorksheet("Pricing")!.getCell("A3"); expect(noteText(cell.note)).toBe("Rate held from 2025 master agreement"); });
test("muted style renders grey + strikethrough", async () => { const buffer = await new XlsxWriter().writeSheets([makePricingSpec()]); const workbook = await loadWorkbook(buffer); const cell = workbook.getWorksheet("Pricing")!.getCell("A4"); expect(cell.font?.strike).toBe(true); expect(cell.font?.color?.argb).toBe("FF808080"); });
test("header/input/derived/internal styles apply fills", async () => { const buffer = await new XlsxWriter().writeSheets([makePricingSpec()]); const sheet = (await loadWorkbook(buffer)).getWorksheet("Pricing")!;
const fgArgb = (addr: string) => { const fill = sheet.getCell(addr).fill; return fill.type === "pattern" ? fill.fgColor?.argb : undefined; }; expect(fgArgb("A1")).toBe("FF4472C4"); expect(sheet.getCell("A1").font?.bold).toBe(true); expect(fgArgb("B2")).toBe("FFFFF2CC"); expect(fgArgb("B6")).toBe("FFF2F2F2"); expect(fgArgb("B7")).toBe("FFFCE4D6"); });
test("numFmt and outline rows apply", async () => { const buffer = await new XlsxWriter().writeSheets([makePricingSpec()]); const sheet = (await loadWorkbook(buffer)).getWorksheet("Pricing")!; expect(sheet.getCell("B2").numFmt).toBe("#,##0.00"); expect(sheet.getRow(3).outlineLevel).toBe(1); expect(sheet.getRow(6).outlineLevel ?? 0).toBe(0); });
test("writeSheets supports multiple sheets", async () => { const buffer = await new XlsxWriter().writeSheets([ makePricingSpec(), { name: "Assumptions", rows: [[{ value: "Assumption" }]] }, ]); const workbook = await loadWorkbook(buffer); expect(workbook.getWorksheet("Pricing")).toBeDefined(); expect(workbook.getWorksheet("Assumptions")).toBeDefined(); });});
describe("XlsxWriter.writeWithGanttAndSheets", () => { test("spec sheets compose with the schedule + Gantt sheets", async () => { const { makeMinimalProject } = await import("../helpers.ts"); const project = makeMinimalProject();
const buffer = await new XlsxWriter().writeWithGanttAndSheets( project, { phases: [ { label: "Phase 1", items: [ { name: "Task A", start: "2026-01-05", finish: "2026-01-09" }, ], }, ], }, [makePricingSpec()], );
const workbook = await loadWorkbook(buffer); expect(workbook.getWorksheet("Schedule")).toBeDefined(); expect(workbook.getWorksheet("Gantt")).toBeDefined(); const pricing = workbook.getWorksheet("Pricing")!; expect(pricing.getCell("B6").formula).toBe("SUM(Line_Amounts)"); expect(workbook.definedNames.getRanges("Line_Amounts").ranges).toEqual([ "Pricing!$B$2:$B$5", ]); });});