mathjs/test/approx.test.js
greenkeeper[bot] c5971b371a Update standard to the latest version 🚀 (#1226)
* chore(package): update standard to version 12.0.0

* update to new lint version with --fix

I believe this mainly adds whitespace to `{}`'s.

* Replace assert.equal with assert.strictEqual

This breaks a lot of tests which I will endevour to fix in the next
commits.

* Fix most errors due to assert.strictEquals

Some instances of `strictEquals` are replaced by `deepEquals`.
`toString` has been used to make some string comparisions explicit.
Tests will still fail untill #1236 and #1237 are fixed.

* Fix assertion erros due to -0

With node 10, assert.strictEqual no longer considers `0 === -0`.
I missed these first time round as I was using node 8.

* Put toString correct side of bracket

I was converting the constructor to a string rather
than the result of the computation. Oops.

* Fixed #1236: quantileSeq has inconsistant return

* Update package-lock

* Fixed #1237: norm sometimes returning a complex number instead of number

* Fix cli tests

* More changes for standardjs, and fixes in unit tests
2018-09-08 16:33:58 +02:00

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2.7 KiB
JavaScript

// test approx itself...
const assert = require('assert')
const approx = require('../tools/approx')
describe('approx', function () {
it('should test equality of positive values', function () {
approx.equal(1 / 3, 0.33333333)
approx.equal(2, 2.000001)
approx.equal(2, 1.999999)
assert.throws(function () { approx.equal(2, 2.001) }, assert.AssertionError)
assert.throws(function () { approx.equal(2, 1.999) }, assert.AssertionError)
})
it('should test equality of negative values', function () {
approx.equal(-2, -2.000001)
approx.equal(-2, -1.999999)
assert.throws(function () { approx.equal(-2, -2.001) }, assert.AssertionError)
assert.throws(function () { approx.equal(-2, -1.999) }, assert.AssertionError)
})
it('should test equality of very large values', function () {
approx.equal(2e100, 2.000001e100)
approx.equal(2e100, 1.999999e100)
assert.throws(function () { approx.equal(2e100, 2.001e100) }, assert.AssertionError)
assert.throws(function () { approx.equal(2e100, 1.999e100) }, assert.AssertionError)
})
it('should test equality of very small values', function () {
approx.equal(2e-100, 2.000001e-100)
approx.equal(2e-100, 1.999999e-100)
assert.throws(function () { approx.equal(2e-100, 2.001e-100) }, assert.AssertionError)
assert.throws(function () { approx.equal(2e-100, 1.999e-100) }, assert.AssertionError)
})
it('should test equality of NaN numbers', function () {
// NaN values
const a = NaN
const b = NaN
approx.equal(a, b)
assert.throws(function () { approx.equal(NaN, 3) }, assert.AssertionError)
assert.throws(function () { approx.equal(NaN, 'nonumber') }, assert.AssertionError)
})
it('should test equality when one of the values is zero', function () {
// zero as one of the two values
approx.equal(0, 1e-15)
approx.equal(1e-15, 0)
assert.throws(function () { approx.equal(0, 0.001) }, assert.AssertionError)
})
// TODO: test approx.equal for (mixed) numbers, BigNumbers, Fractions, Complex numbers
it('should test deep equality of arrays and objects', function () {
approx.deepEqual({
a: [1, 2, 3],
b: [{ c: 4, d: 5 }]
}, {
a: [1.000001, 1.99999999, 3.000005],
b: [{ c: 3.999999981, d: 5.0000023 }]
})
assert.throws(function () {
approx.deepEqual({
a: [1, 2, 3],
b: [{ c: 4, d: 5 }]
}, {
a: [1.000001, 1.99999999, 3.000005],
b: [{ c: 3.1, d: 5.0000023 }]
})
}, assert.AssertionError)
assert.throws(function () {
approx.deepEqual({
a: [1, 2, 3],
b: [{ c: 4, d: 5 }]
}, {
a: [1.001, 1.99999999, 3.000005],
b: [{ c: 3, d: 5.0000023 }]
})
}, assert.AssertionError)
})
})