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78 lines
2.9 KiB
JavaScript
78 lines
2.9 KiB
JavaScript
// test square
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import assert from 'assert'
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import math from '../../../../src/defaultInstance.js'
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const bignumber = math.bignumber
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const fraction = math.fraction
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const matrix = math.matrix
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const square = math.square
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describe('square', function () {
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it('should return the square of a boolean', function () {
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assert.strictEqual(square(true), 1)
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assert.strictEqual(square(false), 0)
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})
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it('should return the square of a number', function () {
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assert.strictEqual(square(4), 16)
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assert.strictEqual(square(-2), 4)
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assert.strictEqual(square(0), 0)
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})
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it('should return the square of a bigint', function () {
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assert.strictEqual(square(4n), 16n)
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assert.strictEqual(square(-2n), 4n)
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assert.strictEqual(square(0n), 0n)
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})
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it('should return the square of a big number', function () {
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assert.deepStrictEqual(square(bignumber(4)), bignumber(16))
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assert.deepStrictEqual(square(bignumber(-2)), bignumber(4))
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assert.deepStrictEqual(square(bignumber(0)), bignumber(0))
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})
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it('should return the square of a fraction', function () {
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const a = fraction(0.5)
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assert(square(a) instanceof math.Fraction)
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assert.strictEqual(square(a).toString(), '0.25')
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assert.strictEqual(a.toString(), '0.5')
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})
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it('should throw an error if used with wrong number of arguments', function () {
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assert.throws(function () { square() }, /TypeError: Too few arguments/)
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assert.throws(function () { square(1, 2) }, /TypeError: Too many arguments/)
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})
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it('should throw an in case of wrong type of arguments', function () {
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assert.throws(function () { square(null) }, /TypeError: Unexpected type of argument/)
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})
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it('should return the square of a complex number', function () {
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assert.deepStrictEqual(square(math.complex('2i')), math.complex('-4'))
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assert.deepStrictEqual(square(math.complex('2+3i')), math.complex('-5+12i'))
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assert.deepStrictEqual(square(math.complex('2')), math.complex('4'))
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})
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it('should return the square of a unit', function () {
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assert.strictEqual(square(math.unit('4 cm')).toString(), '16 cm^2')
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assert.strictEqual(square(math.unit('-2 cm')).toString(), '4 cm^2')
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assert.strictEqual(square(math.unit('0 cm')).toString(), '0 cm^2')
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})
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it('should throw an error when used with a string', function () {
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assert.throws(function () { square('text') })
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})
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it('should not operate on a matrix', function () {
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assert.throws(() => square([2, 3, 4, 5]), TypeError)
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assert.deepStrictEqual(math.map([2, 3, 4, 5], square), [4, 9, 16, 25])
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assert.deepStrictEqual(math.map(matrix([2, 3, 4, 5]), square), matrix([4, 9, 16, 25]))
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assert.deepStrictEqual(math.map(matrix([[1, 2], [3, 4]]), square), matrix([[1, 4], [9, 16]]))
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})
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it('should LaTeX square', function () {
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const expression = math.parse('square(4)')
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assert.strictEqual(expression.toTex(), '\\left(4\\right)^2')
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})
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})
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