mathjs/test/function/matrix/cross.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

50 lines
2.1 KiB
JavaScript

const assert = require('assert')
const math = require('../../../src/main')
describe('cross', function () {
it('should calculate cross product for two arrays', function () {
assert.deepStrictEqual(math.cross([1, 1, 0], [0, 1, 1]), [1, -1, 1])
assert.deepStrictEqual(math.cross([3, -3, 1], [4, 9, 2]), [-15, -2, 39])
assert.deepStrictEqual(math.cross([2, 3, 4], [5, 6, 7]), [-3, 6, -3])
})
it('should calculate cross product for two matrices', function () {
assert.deepStrictEqual(math.cross(math.matrix([1, 1, 0]), math.matrix([0, 1, 1])),
math.matrix([1, -1, 1]))
})
it('should calculate cross product for mixed arrays and matrices', function () {
assert.deepStrictEqual(math.cross([1, 1, 0], math.matrix([0, 1, 1])),
math.matrix([1, -1, 1]))
assert.deepStrictEqual(math.cross(math.matrix([1, 1, 0]), [0, 1, 1]),
math.matrix([1, -1, 1]))
})
it('should calculate cross product for n-d arrays and matrices', function () {
assert.deepStrictEqual(math.cross([[1, 2, 3]], [[4, 5, 6]]), [[-3, 6, -3]])
assert.deepStrictEqual(math.cross([[1], [2], [3]], [4, 5, 6]), [[-3, 6, -3]])
assert.deepStrictEqual(math.cross([[[[1, 2, 3]]]], [[4, 5, 6]]), [[-3, 6, -3]])
})
it('should throw an error for unsupported types of arguments', function () {
assert.throws(function () { math.cross([2, 4, 1], 2) }, TypeError)
})
it('should throw an error for multi dimensional matrix input', function () {
assert.throws(function () { math.cross([[1, 2], [3, 4]], [[1, 2], [3, 4]]) }, /Vectors with length 3 expected/)
})
it('should throw an error in case of vectors with unequal length', function () {
assert.throws(function () { math.cross([2, 3], [1, 2, 3]) }, /Vectors with length 3 expected/)
})
it('should throw an error in case of empty vectors', function () {
assert.throws(function () { math.cross([], []) }, /Vectors with length 3 expected/)
})
it('should LaTeX cross', function () {
const expression = math.parse('cross([1],[2])')
assert.strictEqual(expression.toTex(), '\\left(\\begin{bmatrix}1\\\\\\end{bmatrix}\\right)\\times\\left(\\begin{bmatrix}2\\\\\\end{bmatrix}\\right)')
})
})