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master @ 48 LINES
 
[ HISTORY ]  [ UP ]
 

import { describe, expect, it } from "vitest";
import { layoutToc } from "./TableOfContents";
import { len } from "../../lib/ascii";

const H = (depth: number, slug: string, text: string) => ({ depth, slug, text });
const line = (r: ReturnType<typeof layoutToc>[number]) =>
  `${r.indent}${r.title} ${r.leader} ${r.marker}`;

describe("layoutToc", () => {
  it("numbers sections hierarchically", () => {
    const rows = layoutToc([H(1, "a", "A"), H(2, "b", "B"), H(2, "c", "C"), H(1, "
d", "D")], 48);
    expect(rows.map((r) => r.marker)).toEqual(["1", "1.1", "1.2", "2"]);
  });

  it("fills the exact width at any frame size", () => {
    for (const w of [48, 86]) {
      const rows = layoutToc([H(1, "a", "Alpha"), H(2, "b", "Beta section")], w);
      for (const r of rows) expect(len(line(r))).toBe(w);
    }
  });

  it("normalizes indentation to the shallowest heading", () => {
    const rows = layoutToc([H(2, "a", "A"), H(3, "b", "B")], 48);
    expect(rows[0].indent).toBe("");
    expect(rows[1].indent).toBe("  ");
  });

  it("uppercases and collapses whitespace in titles", () => {
    const rows = layoutToc([H(1, "a", "wide  tables")], 48);
    expect(rows[0].title).toBe("WIDE TABLES");
  });

  it("strips head-rule glyphs leaked into extracted heading text", () => {
    const rows = layoutToc([H(1, "a", `Purpose${"─".repeat(86)}`)], 48);
    expect(rows[0].title).toBe("PURPOSE");
  });

  it("truncates long titles with an ellipsis and still fits", () => {
    const rows = layoutToc([H(1, "a", "x".repeat(60))], 48);
    expect(rows[0].title.endsWith("...")).toBe(true);
    expect(len(line(rows[0]))).toBe(48);
  });

  it("drops headings deeper than maxDepth", () => {
    expect(layoutToc([H(1, "a", "A"), H(4, "b", "B")], 48)).toHaveLength(1);
  });
});


import { describe, expect, it } from "vitest
";
import { layoutToc } from "./TableOfContents
";
import { len } from "../../lib/ascii";

const H = (depth: number, slug: string, text
: string) => ({ depth, slug, text });
const line = (r: ReturnType<typeof layoutToc
>[number]) =>
  `${r.indent}${r.title} ${r.leader} ${r.mar
ker}`;

describe("layoutToc", () => {
  it("numbers sections hierarchically", () =
> {
    const rows = layoutToc([H(1, "a", "A"), 
H(2, "b", "B"), H(2, "c", "C"), H(1, "d", "D
")], 48);
    expect(rows.map((r) => r.marker)).toEqua
l(["1", "1.1", "1.2", "2"]);
  });

  it("fills the exact width at any frame siz
e", () => {
    for (const w of [48, 86]) {
      const rows = layoutToc([H(1, "a", "Alp
ha"), H(2, "b", "Beta section")], w);
      for (const r of rows) expect(len(line(
r))).toBe(w);
    }
  });

  it("normalizes indentation to the shallowe
st heading", () => {
    const rows = layoutToc([H(2, "a", "A"), 
H(3, "b", "B")], 48);
    expect(rows[0].indent).toBe("");
    expect(rows[1].indent).toBe("  ");
  });

  it("uppercases and collapses whitespace in
 titles", () => {
    const rows = layoutToc([H(1, "a", "wide 
 tables")], 48);
    expect(rows[0].title).toBe("WIDE TABLES"
);
  });

  it("strips head-rule glyphs leaked into ex
tracted heading text", () => {
    const rows = layoutToc([H(1, "a", `Purpo
se${"─".repeat(86)}`)], 48);
    expect(rows[0].title).toBe("PURPOSE");
  });

  it("truncates long titles with an ellipsis
 and still fits", () => {
    const rows = layoutToc([H(1, "a", "x".re
peat(60))], 48);
    expect(rows[0].title.endsWith("...")).to
Be(true);
    expect(len(line(rows[0]))).toBe(48);
  });

  it("drops headings deeper than maxDepth", 
() => {
    expect(layoutToc([H(1, "a", "A"), H(4, "
b", "B")], 48)).toHaveLength(1);
  });
});

 
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