chai-bytes extends Chai with a equalBytes function,
which can be used to test equality of byte arrays (i.e., Uint8Array instances).
const { expect, assert } = require('chai')
.use(require('chai-bytes'));
const buffer = new Uint8Array([ 1, 2, 3, 4, 5 ]);
expect(buffer).to.equalBytes('0102030405');
// `assert` style works, too
assert.equalBytes(buffer, [1, 2, 3, 4, 5], 'error message');An expected value passed to equalBytes can be:
- Hexadecimal string, e.g.,
'c0ffee' - Array, e.g.,
[1, 2, 3] - Array-like object (i.e., an object having the
lengthproperty and items accessible by integer properties). This includesUint8Arrayinstances, among other things
If the passed value does not fall into any of these categories,
a TypeError is thrown.
chai-bytes uses combined code coverage from the tested browser environments
(Firefox and PhantomJS). This is because PhantomJS is a typical old environment
that may have problems with Uint8Arrays (e.g., it misses a substantial parts
of their methods).
chai-bytes is available under Apache-2.0 license.