git.r.bdr.sh - rbdr/forum/blob - src/utils/glyph_hash.test.js

   1 import { getGlyphHash } from './glyph_hash';
   2
   3
   4 describe('Glyph Hash utility', () => {
   5
   6   test('it throws an exception if the string is too short', () => {
   7
   8     expect(() => {
   9
  10       getGlyphHash('short');
  11     }).toThrow();
  12
  13     expect(() => {
  14
  15       getGlyphHash('abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ');
  16     }).toThrow();
  17
  18     expect(() => {
  19
  20       getGlyphHash('abcdefghijklmnopqrstuvwxyzABCDEF');
  21     }).not.toThrow();
  22   });
  23
  24   test('it treats UUIDs with hyphens the same as those without', () => {
  25
  26     const uuidWithHyphens = 'f7722355-2285-46c0-a55f-3483a826f3a6';
  27     const uuidWithoutHyphens = 'f7722355228546c0a55f3483a826f3a6';
  28
  29     expect(getGlyphHash(uuidWithHyphens)).toEqual(getGlyphHash(uuidWithoutHyphens));
  30   });
  31
  32   describe('it generates four sets of glyphs and colors', () => {
  33
  34     const state = {};
  35
  36     beforeEach(() => {
  37
  38       state.glyphHash = getGlyphHash('f7722355-2285-46c0-a55f-3483a826f3a6');
  39     });
  40
  41     test('there should be four glyph fragments', () => {
  42
  43       expect(state.glyphHash.length).toBe(4);
  44     });
  45
  46     test('each fragment should have a single character glyph', () => {
  47
  48       for (const glyphHashFragment of state.glyphHash) {
  49         expect(typeof glyphHashFragment.glyph).toBe('string');
  50         expect(glyphHashFragment.glyph.length).toBe(1);
  51       }
  52     });
  53
  54     test('each fragment should have a hexadecimal color', () => {
  55
  56       for (const glyphHashFragment of state.glyphHash) {
  57         expect(typeof glyphHashFragment.color).toBe('string');
  58         expect(glyphHashFragment.color.length).toBe(7);
  59         expect(glyphHashFragment.color).toEqual(expect.stringMatching(/#[0-9a-f]{6}/));
  60       }
  61     });
  62   });
  63 });