184 lines
8 KiB
JavaScript
184 lines
8 KiB
JavaScript
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/**
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* LogarithmPlotter - 2D plotter software to make BODE plots, sequences and distribution functions.
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* Copyright (C) 2021-2024 Ad5001
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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import { textsup, textsub, parseName, getRandomColor, escapeHTML, exponentsToExpression } from "../../src/utils.mjs"
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import { describe, it } from "mocha"
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import { expect } from "chai"
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describe("Extensions", function() {
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describe("#String.toLatinUppercase", function() {
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it("should be able to transform latin characters from strings to their uppercase version", function() {
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expect("abc".toLatinUppercase()).to.equal("ABC")
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expect("abCd".toLatinUppercase()).to.equal("ABCD")
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expect("ab123cd456".toLatinUppercase()).to.equal("AB123CD456")
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expect("ABC".toLatinUppercase()).to.equal("ABC")
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})
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it("shouldn't transform non latin characters to their uppercase version", function() {
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expect("abαπ".toLatinUppercase()).to.equal("ABαπ")
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expect("abαπ".toLatinUppercase()).to.not.equal("abαπ".toUpperCase())
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})
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})
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describe("#String.removeEnclosure", function() {
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it("should be able to remove the first and last characters", function() {
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expect("[1+t]".removeEnclosure()).to.equal("1+t")
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expect('"a+b+c*d"'.removeEnclosure()).to.equal("a+b+c*d")
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expect("(pi/2)".removeEnclosure()).to.equal("pi/2")
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})
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})
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describe("#Number.toDecimalPrecision", function() {
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it("should be able to round a number to a fixed decimal precision", function() {
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expect(123.456789.toDecimalPrecision()).to.equal(123)
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expect(123.456789.toDecimalPrecision(1)).to.equal(123.5)
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expect(123.456789.toDecimalPrecision(2)).to.equal(123.46)
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expect(123.456789.toDecimalPrecision(3)).to.equal(123.457)
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expect(123.456789.toDecimalPrecision(4)).to.equal(123.4568)
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expect(123.456789.toDecimalPrecision(5)).to.equal(123.45679)
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expect(123.456789.toDecimalPrecision(6)).to.equal(123.456789)
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expect(123.111111.toDecimalPrecision(5)).to.equal(123.11111)
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})
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})
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})
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describe("Utils", function() {
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describe("#textsup", function() {
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it("should transform characters which have a sup unicode equivalent", function() {
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expect(textsup("-+=()")).to.equal("⁻⁺⁼⁽⁾")
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expect(textsup("0123456789")).to.equal("⁰¹²³⁴⁵⁶⁷⁸⁹")
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expect(textsup("abcdefghijklmnoprstuvwxyz")).to.equal("ᵃᵇᶜᵈᵉᶠᵍʰⁱʲᵏˡᵐⁿᵒᵖʳˢᵗᵘᵛʷˣʸᶻ")
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})
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it("shouldn't transform characters without a sup equivalent", function() {
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expect(textsup("ABCDEFGHIJKLMNOPQRSTUVWXYZq")).to.equal("ABCDEFGHIJKLMNOPQRSTUVWXYZq")
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})
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it("should partially transform strings which only have a few characters with a sup equivalent", function() {
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expect(textsup("ABCabcABC")).to.equal("ABCᵃᵇᶜABC")
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})
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})
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describe("#textsub", function() {
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it("should transform characters which have a sub unicode equivalent", function() {
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expect(textsub("-+=()")).to.equal("₋₊₌₍₎")
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expect(textsub("0123456789")).to.equal("₀₁₂₃₄₅₆₇₈₉")
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expect(textsub("aehijklmnoprstuvx")).to.equal("ₐₑₕᵢⱼₖₗₘₙₒₚᵣₛₜᵤᵥₓ")
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})
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it("shouldn't transform characters without a sub equivalent", function() {
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expect(textsub("ABCDEFGHIJKLMNOPQRSTUVWXYZ")).to.equal("ABCDEFGHIJKLMNOPQRSTUVWXYZ")
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expect(textsub("bcdfgqyz")).to.equal("bcdfgqyz")
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})
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it("should partially transform strings which only have a few characters with a sub equivalent", function() {
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expect(textsub("ABC123ABC")).to.equal("ABC₁₂₃ABC")
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})
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})
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describe("#parseName", function() {
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it("should parse greek letter names", function() {
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const shorthands = {
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"α": ["al", "alpha"],
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"β": ["be", "beta"],
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"γ": ["ga", "gamma"],
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"δ": ["de", "delta"],
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"ε": ["ep", "epsilon"],
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"ζ": ["ze", "zeta"],
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"η": ["et", "eta"],
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"θ": ["th", "theta"],
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"κ": ["ka", "kappa"],
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"λ": ["la", "lambda"],
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"μ": ["mu"],
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"ν": ["nu"],
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"ξ": ["xi"],
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"ρ": ["rh", "rho"],
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"σ": ["si", "sigma"],
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"τ": ["ta", "tau"],
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"υ": ["up", "upsilon"],
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"φ": ["ph", "phi"],
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"χ": ["ch", "chi"],
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"ψ": ["ps", "psi"],
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"ω": ["om", "omega"],
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"Γ": ["gga", "ggamma"],
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"Δ": ["gde", "gdelta"],
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"Θ": ["gth", "gtheta"],
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"Λ": ["gla", "glambda"],
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"Ξ": ["gxi"],
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"Π": ["gpi"],
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"Σ": ["gsi", "gsigma"],
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"Φ": ["gph", "gphi"],
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"Ψ": ["gps", "gpsi"],
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"Ω": ["gom", "gomega"],
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}
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for(const [char, shorts] of Object.entries(shorthands)) {
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expect(parseName(char)).to.equal(char)
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for(const short of shorts)
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expect(parseName(short)).to.equal(char)
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}
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})
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it("should parse array elements into sub", function() {
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expect(parseName("u[n+1]")).to.equal("uₙ₊₁")
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expect(parseName("u[(n+x)]")).to.equal("u₍ₙ₊ₓ₎")
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expect(parseName("u[A]")).to.equal("uA")
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})
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it("should remove disallowed characters when indicated", function() {
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const disallowed = "xnπℝℕ\\∪∩[] ()^/^/÷*×+=1234567890¹²³⁴⁵⁶⁷⁸⁹⁰-"
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expect(parseName(disallowed)).to.equal("")
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expect(parseName("AA" + disallowed)).to.equal("AA")
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expect(parseName(disallowed, false)).to.equal(disallowed)
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})
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it("should be able to do all three at once", function() {
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expect(parseName("al[n+1]+n")).to.equal("αₙ₊₁")
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expect(parseName("al[n+1]+n", false)).to.equal("αₙ₊₁+n")
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})
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})
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describe("#getRandomColor", function() {
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it("should provide a valid color", function() {
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const colorReg = /^#[A-F\d]{6}$/
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for(let i = 0; i < 50; i++)
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expect(getRandomColor()).to.match(colorReg)
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})
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})
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describe("#escapeHTML", function() {
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it("should should escape ampersands", function() {
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expect(escapeHTML("&")).to.equal("&")
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expect(escapeHTML("High & Mighty")).to.equal("High & Mighty")
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})
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it("should escape injected HTML tags", function() {
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expect(escapeHTML("<script>alert('Injected!')</script>")).to.equal("<script>alert('Injected!')</script>")
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expect(escapeHTML('<a href="javascript:alert()">Link</a>')).to.equal('<a href="javascript:alert()">Link</a>')
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})
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})
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describe("#exponentsToExpression", function() {
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it("should transform exponents to power expression", function() {
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expect(exponentsToExpression("x¹²³⁴⁵⁶⁷⁸⁹⁰")).to.equal("x^1234567890")
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expect(exponentsToExpression("x¹²+y³⁴")).to.equal("x^12+y^34")
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})
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})
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})
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