mathjs/test/unit-tests/function/matrix/identity.test.js
Jos de Jong 6f00715754
Specify import require paths (continuation of #1941) (#1962)
* Add `.js` extension to source file imports

* Specify package `exports` in `package.json`

Specify package type as `commonjs` (It's good to be specific)

* Move all compiled scripts into `lib` directory

Remove ./number.js (You can use the compiled ones in `./lib/*`)

Tell node that the `esm` directory is type `module` and enable tree shaking.

Remove unused files from packages `files` property

* Allow importing of package.json

* Make library ESM first

* - Fix merge conflicts
- Refactor `bundleAny` into `defaultInstance.js` and `browserBundle.cjs`
- Refactor unit tests to be able to run with plain nodejs (no transpiling)
- Fix browser examples

* Fix browser and browserstack tests

* Fix running unit tests on Node 10 (which has no support for modules)

* Fix node.js examples (those are still commonjs)

* Remove the need for `browserBundle.cjs`

* Generate minified bundle only

* [Security] Bump node-fetch from 2.6.0 to 2.6.1 (#1963)

Bumps [node-fetch](https://github.com/bitinn/node-fetch) from 2.6.0 to 2.6.1. **This update includes a security fix.**
- [Release notes](https://github.com/bitinn/node-fetch/releases)
- [Changelog](https://github.com/node-fetch/node-fetch/blob/master/docs/CHANGELOG.md)
- [Commits](https://github.com/bitinn/node-fetch/compare/v2.6.0...v2.6.1)

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* Cleanup console.log

* Add integration tests to test the entry points (commonjs/esm, full/number only)

* Create backward compatibility error messages in the files moved/removed since v8

* Describe breaking changes in HISTORY.md

* Bump karma from 5.2.1 to 5.2.2 (#1965)

Bumps [karma](https://github.com/karma-runner/karma) from 5.2.1 to 5.2.2.
- [Release notes](https://github.com/karma-runner/karma/releases)
- [Changelog](https://github.com/karma-runner/karma/blob/master/CHANGELOG.md)
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Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

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Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>
2020-09-20 18:01:29 +02:00

71 lines
3.4 KiB
JavaScript

import assert from 'assert'
import math from '../../../../src/defaultInstance.js'
const matrix = math.matrix
const identity = math.identity
describe('identity', function () {
it('should create an empty matrix', function () {
assert.deepStrictEqual(identity(), matrix())
assert.deepStrictEqual(identity([]), [])
assert.deepStrictEqual(identity(matrix([])), matrix())
})
it('should create an empty sparse matrix', function () {
assert.deepStrictEqual(identity('sparse'), matrix('sparse'))
assert.deepStrictEqual(identity(matrix([], 'sparse')), matrix('sparse'))
})
it('should create an identity matrix of the given size', function () {
assert.deepStrictEqual(identity(1), matrix([[1]]))
assert.deepStrictEqual(identity(2), matrix([[1, 0], [0, 1]]))
assert.deepStrictEqual(identity([2]), [[1, 0], [0, 1]])
assert.deepStrictEqual(identity(2, 3), matrix([[1, 0, 0], [0, 1, 0]]))
assert.deepStrictEqual(identity(3, 2), matrix([[1, 0], [0, 1], [0, 0]]))
assert.deepStrictEqual(identity([3, 2]), [[1, 0], [0, 1], [0, 0]])
assert.deepStrictEqual(identity(math.matrix([3, 2])), matrix([[1, 0], [0, 1], [0, 0]]))
assert.deepStrictEqual(identity(3, 3), matrix([[1, 0, 0], [0, 1, 0], [0, 0, 1]]))
})
it('should create an identity matrix with storage type css of the given size', function () {
assert.deepStrictEqual(identity(1, 'sparse'), matrix([[1]], 'sparse'))
assert.deepStrictEqual(identity(2, 'sparse'), matrix([[1, 0], [0, 1]], 'sparse'))
assert.deepStrictEqual(identity(2, 3, 'sparse'), matrix([[1, 0, 0], [0, 1, 0]], 'sparse'))
assert.deepStrictEqual(identity(3, 2, 'sparse'), matrix([[1, 0], [0, 1], [0, 0]], 'sparse'))
assert.deepStrictEqual(identity(3, 3, 'sparse'), matrix([[1, 0, 0], [0, 1, 0], [0, 0, 1]], 'sparse'))
})
it('should create an identity matrix with bignumbers', function () {
const zero = math.bignumber(0)
const one = math.bignumber(1)
const two = math.bignumber(2)
const three = math.bignumber(3)
assert.deepStrictEqual(identity(two), matrix([[one, zero], [zero, one]]))
// assert.deepStrictEqual(identity(two, 'sparse'), matrix([[one,zero],[zero,one]], 'sparse')); // FIXME: identity css
assert.deepStrictEqual(identity(two, three), matrix([[one, zero, zero], [zero, one, zero]]))
// assert.deepStrictEqual(identity(two, three, 'sparse'), matrix([[one,zero,zero],[zero,one,zero]], 'sparse')); // FIXME: identity css
})
it('should return an array when setting matrix=="array"', function () {
const math2 = math.create({ matrix: 'Array' })
assert.deepStrictEqual(math2.identity(2), [[1, 0], [0, 1]])
})
it('should throw an error with an invalid input', function () {
assert.throws(function () { identity(3, 3, 2) })
assert.throws(function () { identity([3, 3, 2]) })
assert.throws(function () { identity([3, 3], 2) })
assert.throws(function () { identity([3.2, 3]) })
assert.throws(function () { identity([3, 3.2]) })
assert.throws(function () { identity([3.2, 3.2]) })
assert.throws(function () { identity([2, 'str']) })
assert.throws(function () { identity(['str', 2]) })
assert.throws(function () { identity([-2, 2]) })
assert.throws(function () { identity([2, -2]) })
})
it('should LaTeX identity', function () {
const expression = math.parse('identity(2)')
assert.strictEqual(expression.toTex(), '\\mathrm{identity}\\left(2\\right)')
})
})