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60 lines
2.6 KiB
JavaScript
60 lines
2.6 KiB
JavaScript
import assert from 'assert'
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import math from '../../../../src/defaultInstance.js'
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const conj = math.conj
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describe('conj', function () {
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it('should compute the conjugate of a boolean', function () {
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assert.strictEqual(conj(true), 1)
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assert.strictEqual(conj(false), 0)
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})
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it('should compute the conjugate of a number', function () {
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assert.strictEqual(conj(1), 1)
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assert.strictEqual(conj(2), 2)
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assert.strictEqual(conj(0), 0)
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assert.strictEqual(conj(-2), -2)
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})
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it('should compute the conjugate of a bignumber', function () {
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assert.deepStrictEqual(conj(math.bignumber(2)), math.bignumber(2))
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})
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it('should calculate the conjugate of a complex number correctly', function () {
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assert.strictEqual(conj(math.complex('2 + 3i')).toString(), '2 - 3i')
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assert.strictEqual(conj(123).toString(), '123')
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assert.strictEqual(conj(math.complex('2 - 3i')).toString(), '2 + 3i')
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assert.strictEqual(conj(math.complex('2')).toString(), '2')
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assert.strictEqual(conj(math.complex('-4i')).toString(), '4i')
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assert.strictEqual(conj(math.i).toString(), '-i')
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assert.strictEqual(conj(math.unit('5cm')).toString(), '5 cm')
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})
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it('should calculate the conjugate of a units with complex, Fraction and BigNumber values', function () {
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assert.strictEqual(conj(math.unit(math.complex('300+250i'), 'ohm')).toString(), '(300 - 250i) ohm')
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assert.strictEqual(conj(math.unit(math.bignumber('0.3'), 'm/s')).toString(), '0.3 m / s')
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assert.strictEqual(conj(math.unit(math.fraction('0.(285714)'), 'fahrenheit')).toString(), '2/7 fahrenheit')
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assert.strictEqual(conj(math.unit(math.fraction(0.125), 'hp')).toString(), '1/8 hp')
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})
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it('should calculate the conjugate for each element in a matrix', function () {
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assert.strictEqual(math.format(conj([math.complex('2+3i'), math.complex('3-4i')])),
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'[2 - 3i, 3 + 4i]')
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assert.strictEqual(conj(math.matrix([math.complex('2+3i'), math.complex('3-4i')])).toString(),
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'[2 - 3i, 3 + 4i]')
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})
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it('should throw an error when called with an unsupported type of argument', function () {
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assert.throws(function () { conj(new Date()) }, /TypeError: Unexpected type of argument/)
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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 () { conj() }, /TypeError: Too few arguments/)
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assert.throws(function () { conj(1, 2) }, /TypeError: Too many arguments/)
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})
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it('should LaTeX conj', function () {
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const expression = math.parse('conj(1+i)')
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assert.strictEqual(expression.toTex(), '\\left(1+ i\\right)^*')
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})
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})
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