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master @ 30 LINES
 
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import { describe, expect, it } from "vitest";
import { buildBigNumber, BIG_ROWS } from "./BigNumber";
import { len } from "../../lib/ascii";

describe("buildBigNumber", () => {
  it("renders five rows of block glyphs", () => {
    const rows = buildBigNumber(42, 86).split("\n");
    expect(rows).toHaveLength(BIG_ROWS);
    expect(rows.join("")).toMatch(/█/);
  });

  it("keeps digits four cells apart", () => {
    // "10" ? 3 + 1 gap + 3 = 7 cells on the widest row
    const rows = buildBigNumber(10, 86).split("\n");
    expect(Math.max(...rows.map(len))).toBe(7);
  });

  it("supports separators", () => {
    expect(() => buildBigNumber("1,024.5", 86)).not.toThrow();
  });

  it("throws on characters without glyphs", () => {
    expect(() => buildBigNumber("42%", 86)).toThrow(/no glyph/);
  });

  it("fails the grid when the figure overflows the frame", () => {
    expect(() => buildBigNumber("888888888888888", 48)).toThrow(/cells/);
  });
});


import { describe, expect, it } from "vitest
";
import { buildBigNumber, BIG_ROWS } from "./
BigNumber";
import { len } from "../../lib/ascii";

describe("buildBigNumber", () => {
  it("renders five rows of block glyphs", ()
 => {
    const rows = buildBigNumber(42, 86).spli
t("\n");
    expect(rows).toHaveLength(BIG_ROWS);
    expect(rows.join("")).toMatch(/█/);
  });

  it("keeps digits four cells apart", () => 
{
    // "10" ? 3 + 1 gap + 3 = 7 cells on the
 widest row
    const rows = buildBigNumber(10, 86).spli
t("\n");
    expect(Math.max(...rows.map(len))).toBe(
7);
  });

  it("supports separators", () => {
    expect(() => buildBigNumber("1,024.5", 8
6)).not.toThrow();
  });

  it("throws on characters without glyphs", 
() => {
    expect(() => buildBigNumber("42%", 86)).
toThrow(/no glyph/);
  });

  it("fails the grid when the figure overflo
ws the frame", () => {
    expect(() => buildBigNumber("88888888888
8888", 48)).toThrow(/cells/);
  });
});

 
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