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master @ 120 LINES
 
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import { describe, expect, it } from "vitest";
import { G, box, center, checkGrid, kv, len, pad, row2, row3, rule, ruleD, wrap, w
rapHard } from "./ascii";

describe("len", () => {
  it("counts codepoints, not UTF-16 units", () => {
    expect(len("abc")).toBe(3);
    expect(len("?")).toBe(1);
    expect(len("")).toBe(0);
    expect(len(null)).toBe(0);
    expect(len(undefined)).toBe(0);
  });
});

describe("pad", () => {
  it("pads end by default", () => {
    expect(pad("ab", 5)).toBe("ab   ");
  });
  it("pads start", () => {
    expect(pad("ab", 5, "start")).toBe("   ab");
  });
  it("centers with the extra cell on the right", () => {
    expect(pad("ab", 5, "center")).toBe(" ab  ");
  });
  it("truncates overlong input at codepoint boundaries", () => {
    expect(pad("abcdef", 3)).toBe("abc");
    expect(pad("???", 2)).toBe("??");
  });
});

describe("rules", () => {
  it("rule and ruleD repeat to exact width", () => {
    expect(rule(4)).toBe("────");
    expect(ruleD(3)).toBe("═══");
  });
});

describe("box", () => {
  it("emits every line at exactly the box width", () => {
    const b = box({ width: 12, lines: ["hi", "a longer li"], title: "T" });
    for (const line of b.split("\n")) expect(len(line)).toBe(12);
  });
  it("draws corners and title separator", () => {
    const lines = box({ width: 8, lines: ["x"], title: "T" }).split("\n");
    expect(lines[0]).toBe(G.TL + "──────" + G.TR);
    expect(lines[2]).toBe(G.LJ + "──────" + G.RJ);
    expect(lines.at(-1)).toBe(G.BL + "──────" + G.BR);
  });
  it("centers content when asked", () => {
    const lines = box({ width: 8, lines: ["ab"], align: "center" }).split("\n");
    expect(lines[1]).toBe("│  ab  │");
  });
});

describe("rows", () => {
  it("kv pads key and value to the total width", () => {
    expect(kv("K", "V", 4, 10)).toBe("K   V     ");
  });
  it("row2 fills the gap to exact width", () => {
    const r = row2("LEFT", "RIGHT", 20);
    expect(len(r)).toBe(20);
    expect(r.startsWith("LEFT")).toBe(true);
    expect(r.endsWith("RIGHT")).toBe(true);
  });
  it("row3 places left, center, right in exact width", () => {
    const r = row3("L", "CC", "R", 12);
    expect(len(r)).toBe(12);
    expect(r[0]).toBe("L");
    expect(r[11]).toBe("R");
    expect(r).toContain("CC");
  });
  it("center returns exact width", () => {
    expect(center("ab", 6)).toBe("  ab  ");
  });
});

describe("wrap", () => {
  it("wraps greedily at word boundaries", () => {
    expect(wrap("aa bb cc", 5)).toBe("aa bb\ncc");
  });
  it("leaves a too-long word on its own line rather than splitting it", () => {
    expect(wrap("abcdefgh xy", 4)).toBe("abcdefgh\nxy");
  });
  it("returns single line when everything fits", () => {
    expect(wrap("aa bb", 10)).toBe("aa bb");
  });
});

describe("wrapHard", () => {
  it("splits words wider than the width", () => {
    const out = wrapHard("feat(hosts:{ooksmedia,ooksdesk,ooknode}) done", 20);
    for (const line of out.split("\n")) expect(len(line)).toBeLessThanOrEqual(20);
    expect(out.replace(/\n/g, "")).toBe("feat(hosts:{ooksmedia,ooksdesk,ooknode})d
one");
  });
  it("behaves like wrap for normal prose", () => {
    expect(wrapHard("aa bb cc", 5)).toBe(wrap("aa bb cc", 5));
  });
});

describe("checkGrid", () => {
  it("accepts frame glyphs, arrows, and ASCII", () => {
    const ok = "│ ok [x] ... -- ↑↓ ╌ ═ ┼ ▁▄█ │";
    expect(checkGrid(ok, 40, "t")).toBe(ok);
  });
  it("rejects typographic glyphs - og ascii only", () => {
    expect(() => checkGrid("a - b", 10, "t")).toThrow(/U\+2014/);
    expect(() => checkGrid("a... ", 10, "t")).toThrow(/U\+2026/);
    expect(() => checkGrid("caf?", 10, "t")).toThrow(/off-grid/);
  });
  it("throws on lines exceeding the width", () => {
    expect(() => checkGrid("abcdef", 5, "t")).toThrow(/6 cells, max 5/);
  });
  it("throws on off-grid characters with the codepoint named", () => {
    expect(() => checkGrid("ok ?", 10, "t")).toThrow(/U\+1F44D/);
    expect(() => checkGrid("??", 10, "t")).toThrow(/off-grid/);
  });
  it("rejects glyphs the font subset lacks, naming the context", () => {
    expect(() => checkGrid("a ? b", 10, "my-frame")).toThrow(/my-frame/);
  });
});


import { describe, expect, it } from "vitest
";
import { G, box, center, checkGrid, kv, len,
 pad, row2, row3, rule, ruleD, wrap, wrapHar
d } from "./ascii";

describe("len", () => {
  it("counts codepoints, not UTF-16 units", 
() => {
    expect(len("abc")).toBe(3);
    expect(len("?")).toBe(1);
    expect(len("")).toBe(0);
    expect(len(null)).toBe(0);
    expect(len(undefined)).toBe(0);
  });
});

describe("pad", () => {
  it("pads end by default", () => {
    expect(pad("ab", 5)).toBe("ab   ");
  });
  it("pads start", () => {
    expect(pad("ab", 5, "start")).toBe("   a
b");
  });
  it("centers with the extra cell on the rig
ht", () => {
    expect(pad("ab", 5, "center")).toBe(" ab
  ");
  });
  it("truncates overlong input at codepoint 
boundaries", () => {
    expect(pad("abcdef", 3)).toBe("abc");
    expect(pad("???", 2)).toBe("??");
  });
});

describe("rules", () => {
  it("rule and ruleD repeat to exact width",
 () => {
    expect(rule(4)).toBe("────");
    expect(ruleD(3)).toBe("═══");
  });
});

describe("box", () => {
  it("emits every line at exactly the box wi
dth", () => {
    const b = box({ width: 12, lines: ["hi",
 "a longer li"], title: "T" });
    for (const line of b.split("\n")) expect
(len(line)).toBe(12);
  });
  it("draws corners and title separator", ()
 => {
    const lines = box({ width: 8, lines: ["x
"], title: "T" }).split("\n");
    expect(lines[0]).toBe(G.TL + "──────" + 
G.TR);
    expect(lines[2]).toBe(G.LJ + "──────" + 
G.RJ);
    expect(lines.at(-1)).toBe(G.BL + "──────
" + G.BR);
  });
  it("centers content when asked", () => {
    const lines = box({ width: 8, lines: ["a
b"], align: "center" }).split("\n");
    expect(lines[1]).toBe("│  ab  │");
  });
});

describe("rows", () => {
  it("kv pads key and value to the total wid
th", () => {
    expect(kv("K", "V", 4, 10)).toBe("K   V 
    ");
  });
  it("row2 fills the gap to exact width", ()
 => {
    const r = row2("LEFT", "RIGHT", 20);
    expect(len(r)).toBe(20);
    expect(r.startsWith("LEFT")).toBe(true);
    expect(r.endsWith("RIGHT")).toBe(true);
  });
  it("row3 places left, center, right in exa
ct width", () => {
    const r = row3("L", "CC", "R", 12);
    expect(len(r)).toBe(12);
    expect(r[0]).toBe("L");
    expect(r[11]).toBe("R");
    expect(r).toContain("CC");
  });
  it("center returns exact width", () => {
    expect(center("ab", 6)).toBe("  ab  ");
  });
});

describe("wrap", () => {
  it("wraps greedily at word boundaries", ()
 => {
    expect(wrap("aa bb cc", 5)).toBe("aa bb\
ncc");
  });
  it("leaves a too-long word on its own line
 rather than splitting it", () => {
    expect(wrap("abcdefgh xy", 4)).toBe("abc
defgh\nxy");
  });
  it("returns single line when everything fi
ts", () => {
    expect(wrap("aa bb", 10)).toBe("aa bb");
  });
});

describe("wrapHard", () => {
  it("splits words wider than the width", ()
 => {
    const out = wrapHard("feat(hosts:{ooksme
dia,ooksdesk,ooknode}) done", 20);
    for (const line of out.split("\n")) expe
ct(len(line)).toBeLessThanOrEqual(20);
    expect(out.replace(/\n/g, "")).toBe("fea
t(hosts:{ooksmedia,ooksdesk,ooknode})done");
  });
  it("behaves like wrap for normal prose", (
) => {
    expect(wrapHard("aa bb cc", 5)).toBe(wra
p("aa bb cc", 5));
  });
});

describe("checkGrid", () => {
  it("accepts frame glyphs, arrows, and ASCI
I", () => {
    const ok = "│ ok [x] ... -- ↑↓ ╌ ═ ┼ ▁▄█
 │";
    expect(checkGrid(ok, 40, "t")).toBe(ok);
  });
  it("rejects typographic glyphs - og ascii 
only", () => {
    expect(() => checkGrid("a - b", 10, "t")
).toThrow(/U\+2014/);
    expect(() => checkGrid("a... ", 10, "t")
).toThrow(/U\+2026/);
    expect(() => checkGrid("caf?", 10, "t"))
.toThrow(/off-grid/);
  });
  it("throws on lines exceeding the width", 
() => {
    expect(() => checkGrid("abcdef", 5, "t")
).toThrow(/6 cells, max 5/);
  });
  it("throws on off-grid characters with the
 codepoint named", () => {
    expect(() => checkGrid("ok ?", 10, "t"))
.toThrow(/U\+1F44D/);
    expect(() => checkGrid("??", 10, "t")).t
oThrow(/off-grid/);
  });
  it("rejects glyphs the font subset lacks, 
naming the context", () => {
    expect(() => checkGrid("a ? b", 10, "my-
frame")).toThrow(/my-frame/);
  });
});

 
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