21 lines
746 B
JavaScript
21 lines
746 B
JavaScript
const test = require('tap').test
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const GF = require('core/galois-field')
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test('Galois Field', function (t) {
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t.throw(function () { GF.log(0) }, 'Should throw for log(n) with n < 1')
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for (let i = 1; i < 255; i++) {
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t.equal(GF.log(GF.exp(i)), i, 'log and exp should be one the inverse of the other')
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t.equal(GF.exp(GF.log(i)), i, 'exp and log should be one the inverse of the other')
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}
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t.equal(GF.mul(0, 1), 0, 'Should return 0 if first param is 0')
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t.equal(GF.mul(1, 0), 0, 'Should return 0 if second param is 0')
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t.equal(GF.mul(0, 0), 0, 'Should return 0 if both params are 0')
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for (let j = 1; j < 255; j++) {
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t.equal(GF.mul(j, 255 - j), GF.mul(255 - j, j), 'Multiplication should be commutative')
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}
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t.end()
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})
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