mathjs/test/function/matrix/map.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

80 lines
2.7 KiB
JavaScript

const assert = require('assert')
const math = require('../../../src/main')
describe('map', function () {
it('should apply map to all elements of the matrix', function () {
const m = math.matrix([[1, 2, 3], [4, 5, 6]])
const m2 = math.map(m, function (value) { return value * 2 })
assert.deepStrictEqual(m2.valueOf(), [[2, 4, 6], [8, 10, 12]])
assert.ok(m2 instanceof math.type.Matrix)
})
it('should apply deep-map to all elements in the array', function () {
const arr = [[1, 2, 3], [4, 5, 6]]
const arr2 = math.map(arr, function (value) { return value * 2 })
assert.deepStrictEqual(arr2, [[2, 4, 6], [8, 10, 12]])
assert.ok(Array.isArray(arr2))
})
it('should invoke callback with parameters value, index, obj', function () {
const arr = [[1, 2, 3], [4, 5, 6]]
assert.deepStrictEqual(math.map(arr, function (value, index, obj) {
// we don't clone index here, this should return a copy with every iteration
return [value, index, obj === arr]
}).valueOf(), [
[
[1, [0, 0], true],
[2, [0, 1], true],
[3, [0, 2], true]
],
[
[4, [1, 0], true],
[5, [1, 1], true],
[6, [1, 2], true]
]
])
})
it('should invoke a typed function with correct number of arguments (1)', function () {
const output = math.map([1, 2, 3], math.typed('callback', {
'number': function (value) {
return value + 2
}
}))
assert.deepStrictEqual(output, [3, 4, 5])
})
it('should invoke a typed function with correct number of arguments (2)', function () {
const output = math.map([1, 2, 3], math.typed('callback', {
'number, Array': function (value, index) {
return value + 2
}
}))
assert.deepStrictEqual(output, [3, 4, 5])
})
it('should invoke a typed function with correct number of arguments (3)', function () {
const output = math.map([1, 2, 3], math.typed('callback', {
'number, Array, Array': function (value, index, array) {
return value + 2
}
}))
assert.deepStrictEqual(output, [3, 4, 5])
})
it('should throw an error if called with unsupported type', function () {
assert.throws(function () { math.map(1, function () {}) })
assert.throws(function () { math.map('arr', function () {}) })
})
it('should throw an error if called with invalid number of arguments', function () {
assert.throws(function () { math.map([1, 2, 3]) })
})
it('should LaTeX map', function () {
const expression = math.parse('map([1,2,3],callback)')
assert.strictEqual(expression.toTex(), '\\mathrm{map}\\left(\\begin{bmatrix}1\\\\2\\\\3\\\\\\end{bmatrix}, callback\\right)')
})
})