import {
  clampedByteToHex,
  createRandomColorPalette,
  RANDOM_PALETTE_ALGORITHMS,
} from "./random-colors";

describe("clampedByteToHex", () => {
  it("clamps values over 255 to 255", () => {
    expect(clampedByteToHex(500)).toBe("ff");
  });

  it("clamps values under 0 to 0", () => {
    expect(clampedByteToHex(-50)).toBe("00");
  });

  it("zero-pads values", () => {
    expect(clampedByteToHex(10)).toBe("0a");
  });

  it("works with numbers that don't need zero-padding", () => {
    expect(clampedByteToHex(22)).toBe("16");
  });
});

describe("createRandomColorPalette()", () => {
  for (let alg of RANDOM_PALETTE_ALGORITHMS) {
    it(`works using the '${alg}' algorithm`, () => {
      const palette = createRandomColorPalette(3, undefined, alg);
      expect(palette).toHaveLength(3);
      for (let color of palette) {
        expect(color).toMatch(/^\#[0-9a-f]{6}$/);
      }
    });
  }
});