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72 lines
2.5 KiB
JavaScript
72 lines
2.5 KiB
JavaScript
// test square
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var assert = require('assert')
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var math = require('../../../src/index')
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var unit = math.unit
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var bignumber = math.bignumber
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var fraction = math.fraction
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var matrix = math.matrix
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var range = math.range
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var 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.equal(square(true), 1)
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assert.equal(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.equal(square(4), 16)
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assert.equal(square(-2), 4)
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assert.equal(square(0), 0)
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})
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it('should return the square of a big number', function () {
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assert.deepEqual(square(bignumber(4)), bignumber(16))
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assert.deepEqual(square(bignumber(-2)), bignumber(4))
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assert.deepEqual(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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var a = fraction(0.5)
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assert(square(a) instanceof math.type.Fraction)
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assert.equal(square(a).toString(), '0.25')
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assert.equal(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.deepEqual(square(math.complex('2i')), math.complex('-4'))
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assert.deepEqual(square(math.complex('2+3i')), math.complex('-5+12i'))
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assert.deepEqual(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.equal(square(math.unit('4 cm')).toString(), '16 cm^2')
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assert.equal(square(math.unit('-2 cm')).toString(), '4 cm^2')
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assert.equal(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 return the square of each element in a matrix', function () {
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assert.deepEqual(square([2, 3, 4, 5]), [4, 9, 16, 25])
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assert.deepEqual(square(matrix([2, 3, 4, 5])), matrix([4, 9, 16, 25]))
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assert.deepEqual(square(matrix([[1, 2], [3, 4]])), matrix([[1, 4], [9, 16]]))
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})
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it('should LaTeX square', function () {
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var expression = math.parse('square(4)')
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assert.equal(expression.toTex(), '\\left(4\\right)^2')
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})
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})
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