index.js 1.1 KB

1234567891011121314151617181920212223242526272829
  1. 'use strict';
  2. var test = require('tape');
  3. var isNegativeZero = require('../');
  4. test('not negative zero', function (t) {
  5. // @ts-expect-error
  6. t.notOk(isNegativeZero(), 'undefined is not negative zero');
  7. t.notOk(isNegativeZero(null), 'null is not negative zero');
  8. t.notOk(isNegativeZero(false), 'false is not negative zero');
  9. t.notOk(isNegativeZero(true), 'true is not negative zero');
  10. t.notOk(isNegativeZero(0), 'positive zero is not negative zero');
  11. t.notOk(isNegativeZero(Infinity), 'Infinity is not negative zero');
  12. t.notOk(isNegativeZero(-Infinity), '-Infinity is not negative zero');
  13. t.notOk(isNegativeZero(NaN), 'NaN is not negative zero');
  14. t.notOk(isNegativeZero('foo'), 'string is not negative zero');
  15. t.notOk(isNegativeZero([]), 'array is not negative zero');
  16. t.notOk(isNegativeZero({}), 'object is not negative zero');
  17. t.notOk(isNegativeZero(function () {}), 'function is not negative zero');
  18. t.notOk(isNegativeZero(-1), '-1 is not negative zero');
  19. t.end();
  20. });
  21. test('negative zero', function (t) {
  22. t.ok(isNegativeZero(-0), 'negative zero is negative zero');
  23. t.end();
  24. });