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master @ 22 LINES
 
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import { describe, expect, it } from "vitest";
import { buildBanner } from "./Banner";
import { len } from "../../lib/ascii";

describe("buildBanner", () => {
  it("renders every line at the frame width", () => {
    for (const w of [48, 86]) {
      const out = buildBanner("warning", "frequency drift detected on channel brav
o", w);
      for (const ln of out.split("\n")) expect(len(ln)).toBe(w);
    }
  });

  it("embeds the variant label in the top rule", () => {
    expect(buildBanner("error", "x", 48).split("\n")[0]).toContain("─ ERROR ─");
  });

  it("wraps long messages", () => {
    const out = buildBanner("notice", "word ".repeat(30).trim(), 48);
    expect(out.split("\n").length).toBeGreaterThan(4);
  });
});


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

describe("buildBanner", () => {
  it("renders every line at the frame width"
, () => {
    for (const w of [48, 86]) {
      const out = buildBanner("warning", "fr
equency drift detected on channel bravo", w)
;
      for (const ln of out.split("\n")) expe
ct(len(ln)).toBe(w);
    }
  });

  it("embeds the variant label in the top ru
le", () => {
    expect(buildBanner("error", "x", 48).spl
it("\n")[0]).toContain("─ ERROR ─");
  });

  it("wraps long messages", () => {
    const out = buildBanner("notice", "word 
".repeat(30).trim(), 48);
    expect(out.split("\n").length).toBeGreat
erThan(4);
  });
});

 
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