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98 lines
3.7 KiB
JavaScript
98 lines
3.7 KiB
JavaScript
// test unary plus
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const assert = require('assert')
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const math = require('../../../src/main')
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const bignumber = math.bignumber
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const fraction = math.fraction
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describe('unaryPlus', function () {
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it('should return unary plus of a boolean', function () {
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assert.equal(math.unaryPlus(true), 1)
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assert.equal(math.unaryPlus(false), 0)
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})
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it('should return bignumber unary plus of a boolean', function () {
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const bigmath = math.create({number: 'BigNumber'})
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assert.deepEqual(bigmath.unaryPlus(true), bigmath.bignumber(1))
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assert.deepEqual(bigmath.unaryPlus(false), bigmath.bignumber(0))
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})
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it('should return unary plus on a string', function () {
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assert.equal(math.unaryPlus('2'), 2)
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assert.equal(math.unaryPlus('-2'), -2)
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})
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it('should return bignumber unary plus on a string', function () {
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const bigmath = math.create({number: 'BigNumber'})
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assert.deepEqual(bigmath.unaryPlus('2'), bigmath.bignumber(2))
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assert.deepEqual(bigmath.unaryPlus('-2'), bigmath.bignumber(-2))
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})
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// TODO: this is temporary until the test above works again
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it('should return bignumber unary plus on a string', function () {
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const bigmath = math.create({number: 'BigNumber'})
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const a = bigmath.unaryPlus('2')
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assert(a instanceof math.type.BigNumber)
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assert.deepEqual(a.toString(), '2')
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const b = bigmath.unaryPlus('-2')
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assert(b instanceof math.type.BigNumber)
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assert.deepEqual(b.toString(), '-2')
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})
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it('should perform unary plus of a number', function () {
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assert.deepEqual(math.unaryPlus(2), 2)
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assert.deepEqual(math.unaryPlus(-2), -2)
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assert.deepEqual(math.unaryPlus(0), 0)
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})
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it('should perform unary plus of a big number', function () {
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assert.deepEqual(math.unaryPlus(bignumber(2)), bignumber(2))
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assert.deepEqual(math.unaryPlus(bignumber(-2)), bignumber(-2))
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assert.deepEqual(math.unaryPlus(bignumber(0)).valueOf(), bignumber(0).valueOf())
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})
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it('should perform unary plus of a fraction', function () {
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const a = fraction(0.5)
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assert(math.unaryPlus(a) instanceof math.type.Fraction)
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assert.equal(a.toString(), '0.5')
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assert.equal(math.unaryPlus(fraction(0.5)).toString(), '0.5')
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assert.equal(math.unaryPlus(fraction(-0.5)).toString(), '-0.5')
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})
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it('should perform unary plus of a complex number', function () {
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assert.equal(math.unaryPlus(math.complex(3, 2)), '3 + 2i')
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assert.equal(math.unaryPlus(math.complex(3, -2)), '3 - 2i')
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assert.equal(math.unaryPlus(math.complex(-3, 2)), '-3 + 2i')
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assert.equal(math.unaryPlus(math.complex(-3, -2)), '-3 - 2i')
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})
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it('should perform unary plus of a unit', function () {
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assert.equal(math.unaryPlus(math.unit(5, 'km')).toString(), '5 km')
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})
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it('should perform element-wise unary plus on a matrix', function () {
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const a2 = math.matrix([[1, 2], [3, 4]])
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const a7 = math.unaryPlus(a2)
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assert.ok(a7 instanceof math.type.Matrix)
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assert.deepEqual(a7.size(), [2, 2])
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assert.deepEqual(a7.valueOf(), [[1, 2], [3, 4]])
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assert.deepEqual(math.unaryPlus([[1, 2], [3, 4]]), [[1, 2], [3, 4]])
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})
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it('should throw an error in case of invalid number of arguments', function () {
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assert.throws(function () { math.unaryPlus() }, /TypeError: Too few arguments/)
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assert.throws(function () { math.unaryPlus(1, 2) }, /TypeError: Too many arguments/)
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})
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it('should throw an error in case of invalid type of argument', function () {
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assert.throws(function () { math.unaryPlus(new Date()) }, /TypeError: Unexpected type of argument/)
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assert.throws(function () { math.unaryPlus(null) }, /TypeError: Unexpected type of argument/)
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})
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it('should LaTeX unaryPlus', function () {
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const expression = math.parse('unaryPlus(1)')
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assert.equal(expression.toTex(), '+\\left(1\\right)')
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})
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})
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