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https://github.com/josdejong/mathjs.git
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928a950f02
* Remove customString duplication in Node * Extract last dimension change in transform * Add unit tests to lastDimToZeroBase Co-authored-by: Jos de Jong <wjosdejong@gmail.com>
52 lines
1.6 KiB
JavaScript
52 lines
1.6 KiB
JavaScript
import assert from 'assert'
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import math from '../../../../../src/defaultInstance.js'
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import { lastDimToZeroBase } from '../../../../../src/expression/transform/utils/lastDimToZeroBase.js'
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describe('lastDimToZeroBase', function () {
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it('should not alter args with length !== 2', function () {
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let args = []
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assert.deepStrictEqual(lastDimToZeroBase(args), args)
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args = [[1, 2]]
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assert.deepStrictEqual(lastDimToZeroBase(args), args)
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args = [1, 2, 3]
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assert.deepStrictEqual(lastDimToZeroBase(args), args)
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})
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it('should only alter args, if first argument is a collection', function () {
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let args = [1, 2]
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assert.deepStrictEqual(lastDimToZeroBase(args), args)
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args = [[1, 2], 2]
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assert.notDeepStrictEqual(lastDimToZeroBase(args), args)
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args = [math.matrix([1, 2]), 2]
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assert.notDeepStrictEqual(lastDimToZeroBase(args), args)
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})
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it('should not alter args, if second argument is not number or big number', function () {
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const args = [[1, 2], false]
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assert.deepStrictEqual(lastDimToZeroBase(args), args)
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})
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it('should work for numbers', function () {
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const args = [[1, 2], 1]
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const expected = [[1, 2], 0]
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assert.deepStrictEqual(lastDimToZeroBase(args), expected)
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})
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it('should work for big numbers', function () {
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const args = [[1, 2], math.bignumber(1)]
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const expected = [[1, 2], math.bignumber(0)]
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assert.deepStrictEqual(lastDimToZeroBase(args), expected)
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})
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it('should not mutate input', function () {
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const args = [[3, 2], 1]
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const initialArgs = args.slice()
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lastDimToZeroBase(args)
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assert.deepStrictEqual(args, initialArgs)
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})
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})
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