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basic.js 958B

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  1. var isBuffer = require('../')
  2. var test = require('tape')
  3. test('is-buffer', function (t) {
  4. t.equal(isBuffer(Buffer.alloc(4)), true, 'new Buffer(4)')
  5. t.equal(isBuffer(Buffer.allocUnsafeSlow(100)), true, 'SlowBuffer(100)')
  6. t.equal(isBuffer(undefined), false, 'undefined')
  7. t.equal(isBuffer(null), false, 'null')
  8. t.equal(isBuffer(''), false, 'empty string')
  9. t.equal(isBuffer(true), false, 'true')
  10. t.equal(isBuffer(false), false, 'false')
  11. t.equal(isBuffer(0), false, '0')
  12. t.equal(isBuffer(1), false, '1')
  13. t.equal(isBuffer(1.0), false, '1.0')
  14. t.equal(isBuffer('string'), false, 'string')
  15. t.equal(isBuffer({}), false, '{}')
  16. t.equal(isBuffer([]), false, '[]')
  17. t.equal(isBuffer(function foo () {}), false, 'function foo () {}')
  18. t.equal(isBuffer({ isBuffer: null }), false, '{ isBuffer: null }')
  19. t.equal(isBuffer({ isBuffer: function () { throw new Error() } }), false, '{ isBuffer: function () { throw new Error() } }')
  20. t.end()
  21. })