mirror of
https://github.com/josdejong/mathjs.git
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392 lines
11 KiB
JavaScript
392 lines
11 KiB
JavaScript
import assert from 'assert'
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import mathjs from '../../../src/defaultInstance.js'
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import { approxEqual } from '../../../tools/approx.js'
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import { factory } from '../../../src/utils/factory.js'
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import { create } from '../../../src/core/create.js'
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import { hasOwnProperty } from '../../../src/utils/object.js'
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const multiplyTestFactory = factory('multiplyTest', [], () => {
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return function multiply (a, b) {
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return a * b
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}
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})
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const cubeTestFactory = factory('cubeTest', ['multiplyTest'], ({ multiplyTest }) => {
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return function cube (a) {
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return multiplyTest(a, multiplyTest(a, a))
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}
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})
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const nestedFactory = factory('tools.misc.nested', [], () => {
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return function nested () {
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return 'nested'
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}
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})
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describe('import', function () {
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let math = null
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beforeEach(function () {
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math = mathjs.create()
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math.import({
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myvalue: 42,
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hello: function (name) {
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return 'hello, ' + name + '!'
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}
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}, { override: true })
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})
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afterEach(function () {
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math = null
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})
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it('should import a custom member', function () {
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assert.strictEqual(math.myvalue * 2, 84)
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assert.strictEqual(math.hello('user'), 'hello, user!')
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})
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it('should not override existing functions', function () {
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assert.throws(function () { math.import({ myvalue: 10 }) },
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/Error: Cannot import "myvalue": already exists/)
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assert.strictEqual(math.myvalue, 42)
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})
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it('should not override existing units', function () {
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assert.throws(function () { math.import({ meter: 10 }) },
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/Error: Cannot import "meter": already exists/)
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assert.deepStrictEqual(math.evaluate('1 meter'), math.unit('1 meter'))
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})
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it('should allow importing the same function twice if it is strictly equal', function () {
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function foo () { return 'bar' }
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math.import({
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object1: {
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foo
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},
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object2: {
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foo
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}
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})
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assert.strictEqual(math.foo(), 'bar')
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})
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it('should not allow importing the same function twice if it is not strictly equal', function () {
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function foo1 () { return 'bar' }
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function foo2 () { return 'bar' }
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assert.throws(function () {
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math.import({
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object1: {
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foo: foo1
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},
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object2: {
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foo: foo2
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}
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})
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}, /Error: Cannot import "foo" twice/)
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})
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it('should throw no errors when silent:true', function () {
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math.import({ myvalue: 10 }, { silent: true })
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assert.strictEqual(math.myvalue, 42)
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})
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it('should override existing functions if forced', function () {
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math.import({ myvalue: 10 }, { override: true })
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assert.strictEqual(math.myvalue, 10)
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})
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it('should override existing units if forced', function () {
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math.import({ meter: 10 }, { override: true })
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assert.strictEqual(math.evaluate('meter'), 10)
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})
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it('should parse the user defined members', function () {
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if (math.parser) {
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const parser = math.parser()
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math.add(math.myvalue, 10)
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parser.evaluate('myvalue + 10') // 52
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parser.evaluate('hello("user")') // 'hello, user!'
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}
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})
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const getSize = function (array) {
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return array.length
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}
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it('shouldn\'t wrap custom functions by default', function () {
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math.import({ getSizeNotWrapped: getSize })
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assert.strictEqual(math.getSizeNotWrapped([1, 2, 3]), 3)
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assert.strictEqual(math.getSizeNotWrapped(math.matrix([1, 2, 3])), undefined)
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})
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it('should wrap custom functions if wrap = true', function () {
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math.import({ getSizeWrapped: getSize }, { wrap: true })
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assert.strictEqual(math.getSizeWrapped([1, 2, 3]), 3)
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assert.strictEqual(math.getSizeWrapped(math.matrix([1, 2, 3])), 3)
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})
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it('wrapped imported functions should accept undefined and null', function () {
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math.import({
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testIsNull: function (obj) {
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return obj === null
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}
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}, { wrap: true })
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assert.strictEqual(math.testIsNull(null), true)
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assert.strictEqual(math.testIsNull(0), false)
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math.import({
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testIsUndefined: function (obj) {
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return obj === undefined
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}
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}, { wrap: true })
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assert.strictEqual(math.testIsUndefined(undefined), true)
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assert.strictEqual(math.testIsUndefined(0), false)
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assert.strictEqual(math.testIsUndefined(null), false)
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})
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it('should throw an error in case of wrong number of arguments', function () {
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assert.throws(function () { math.import() }, /ArgumentsError/)
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assert.throws(function () { math.import('', {}, 3) }, /ArgumentsError/)
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})
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it('should throw an error in case of wrong type of arguments', function () {
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assert.throws(function () { math.import(2) }, /TypeError: Factory, Object, or Array expected/)
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assert.throws(function () { math.import(function () {}) }, /TypeError: Factory, Object, or Array expected/)
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})
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it('should ignore properties on Object', function () {
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Object.prototype.foo = 'bar' // eslint-disable-line no-extend-native
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math.import({ baz: 456 })
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assert(!hasOwnProperty(math, 'foo'))
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assert(hasOwnProperty(math, 'baz'))
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delete Object.prototype.foo
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})
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it('should return the imported object', function () {
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math.import({ a: 24 })
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assert.deepStrictEqual(math.a, 24)
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math.import({ pi: 24 }, { silent: true })
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approxEqual(math.pi, Math.PI) // pi was ignored
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})
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it('should import a boolean', function () {
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math.import({ a: true })
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assert.strictEqual(math.a, true)
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})
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it('should merge typed functions with the same name', function () {
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math.import({
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foo: math.typed('foo', {
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number: function (x) {
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return 'foo(number)'
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}
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})
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})
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math.import({
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foo: math.typed('foo', {
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string: function (x) {
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return 'foo(string)'
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}
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})
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})
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assert.deepStrictEqual(Object.keys(math.foo.signatures).sort(), ['number', 'string'])
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assert.strictEqual(math.foo(2), 'foo(number)')
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assert.strictEqual(math.foo('bar'), 'foo(string)')
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assert.throws(function () {
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math.foo(new Date())
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}, /TypeError: Unexpected type of argument in function foo/)
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})
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it('should override existing typed functions', function () {
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math.import({
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foo: math.typed('foo', {
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Date: function (x) {
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return 'foo(Date)'
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}
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})
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})
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assert.strictEqual(math.foo(new Date()), 'foo(Date)')
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math.import({
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foo: math.typed('foo', {
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string: function (x) {
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return 'foo(string)'
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}
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})
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}, { override: true })
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assert.deepStrictEqual(Object.keys(math.foo.signatures).sort(), ['string'])
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assert.strictEqual(math.foo('bar'), 'foo(string)')
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assert.throws(function () {
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math.foo(new Date())
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}, /TypeError: Unexpected type of argument in function foo/)
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assert.throws(function () {
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math.foo(new Date())
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}, /TypeError: Unexpected type of argument in function foo/)
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})
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it('should import a boolean', function () {
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math.import({ a: true })
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assert.strictEqual(math.a, true)
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})
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it('should import a function with transform', function () {
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function foo (text) {
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return text.toLowerCase()
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}
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foo.transform = function foo (text) {
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return text.toUpperCase()
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}
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math.import({ foo })
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assert(hasOwnProperty(math, 'foo'))
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assert.strictEqual(math.foo, foo)
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assert(hasOwnProperty(math.expression.transform, 'foo'))
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assert.strictEqual(math.expression.transform.foo, foo.transform)
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})
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it('should override a function with transform for one without', function () {
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function mean () {
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return 'test'
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}
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math.import({ mean }, { override: true })
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assert(hasOwnProperty(math, 'mean'))
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assert.strictEqual(math.mean, mean)
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assert.strictEqual(math.expression.transform.mean, undefined)
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assert.strictEqual(math.expression.mathWithTransform.mean, mean)
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})
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it('should import a constant with a Complex value', function () {
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const myComplexConst = math.complex(2, 3)
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math.import({
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myComplexConst
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})
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assert.strictEqual(math.myComplexConst, myComplexConst)
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})
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describe('factory', function () {
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it('should import a factory function', function () {
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const math2 = create()
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assert.strictEqual(math2.multiplyTest, undefined)
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assert.strictEqual(math2.cubeTest, undefined)
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math2.import(multiplyTestFactory)
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math2.import(cubeTestFactory)
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assert.strictEqual(math2.multiplyTest(2, 3), 6)
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assert.strictEqual(math2.cubeTest(3), 27)
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})
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it('should import an array with factory functions', function () {
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const math2 = create()
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assert.strictEqual(math2.multiplyTest, undefined)
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assert.strictEqual(math2.cubeTest, undefined)
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math2.import([multiplyTestFactory, cubeTestFactory])
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assert.strictEqual(math2.multiplyTest(2, 3), 6)
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assert.strictEqual(math2.cubeTest(3), 27)
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})
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it('should not allow nested nested paths in a factory', function () {
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const math2 = create()
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assert.strictEqual(math2.tools, undefined)
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assert.throws(() => {
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math2.import([nestedFactory])
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}, /Factory name should not contain a nested path/)
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})
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it('should import an array with factory functions in the correct order, resolving dependencies', function () {
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const math2 = create()
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assert.strictEqual(math2.multiplyTest, undefined)
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assert.strictEqual(math2.cubeTest, undefined)
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// note that this depends on lazy loading
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math2.import([cubeTestFactory, multiplyTestFactory])
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assert.strictEqual(math2.multiplyTest(2, 3), 6)
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assert.strictEqual(math2.cubeTest(3), 27)
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})
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it('should NOT import factory functions with custom name', function () {
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// changed since v6
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const math2 = create()
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assert.strictEqual(math2.multiplyTest, undefined)
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assert.strictEqual(math2.cubeTest, undefined)
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math2.import({
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multiplyTest: multiplyTestFactory
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})
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math2.import({
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cubeTest3: cubeTestFactory
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})
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assert.strictEqual(math2.cubeTest3, undefined)
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assert.strictEqual(math2.multiplyTest(2, 3), 6)
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assert.strictEqual(math2.cubeTest(3), 27)
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})
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it('should throw an error when a dependency is missing with import factory', function () {
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const math2 = create()
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assert.throws(() => {
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math2.import(cubeTestFactory)
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assert.strictEqual(typeof math2.cubeTest, 'function') // force loading
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}, /Cannot create function "cubeTest", some dependencies are missing: "multiplyTest"/)
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})
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})
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// eslint-disable-next-line mocha/no-skipped-tests
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it.skip('should import a factory with name', function () {
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// TODO: unit test importing a factory
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})
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// eslint-disable-next-line mocha/no-skipped-tests
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it.skip('should import a factory with path', function () {
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// TODO: unit test importing a factory
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})
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// eslint-disable-next-line mocha/no-skipped-tests
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it.skip('should import a factory without name', function () {
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// TODO: unit test importing a factory
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})
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// eslint-disable-next-line mocha/no-skipped-tests
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it.skip('should pass the namespace to a factory function', function () {
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// TODO: unit test importing a factory
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})
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// eslint-disable-next-line mocha/no-skipped-tests
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it.skip('should import an Array', function () {
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// TODO: unit test importing an Array containing stuff
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})
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it('should LaTeX import', function () {
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const expression = math.parse('import(object)')
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assert.strictEqual(expression.toTex(), '\\mathrm{import}\\left( object\\right)')
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})
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})
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