Testing!

.mocharc.jsonc

@@ -0,0 +1,25 @@
+/**
+ *  LogarithmPlotter - 2D plotter software to make BODE plots, sequences and distribution functions.
+ *  Copyright (C) 2021-2024  Ad5001
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+{
+    "recursive": true,
+    "require": [
+        "esm",
+        "./tests/js/hooks.mjs"
+    ]
+}

LogarithmPlotter/logarithmplotter.py

@@ -130,7 +130,7 @@ def create_engine(helper: Helper, latex: Latex, dep_time: float) -> tuple[QQmlAp
     global tmpfile
     engine = QQmlApplicationEngine()
     js_globals = PyJSValue(engine.globalObject())
-    js_globals.Modules = engine.newObject()
+    js_globals.globalThis = engine.globalObject()
     js_globals.Helper = engine.newQObject(helper)
     js_globals.Latex = engine.newQObject(latex)
     engine.rootContext().setContextProperty("TestBuild", "--test-build" in argv)

LogarithmPlotter/qml/eu/ad5001/LogarithmPlotter/LogarithmPlotter.qml

@@ -259,4 +259,10 @@ ApplicationWindow {
     function showUpdateMenu() {
         appMenu.addMenu(updateMenu)
     }
+    
+    // Initializing modules
+    Component.onCompleted: {
+        Modules.IO.initialize({ root, settings, alert })
+        Modules.Latex.initialize({ latex: Latex, helper: Helper })
+    }
 }

LogarithmPlotter/qml/eu/ad5001/LogarithmPlotter/Settings.qml

@@ -127,10 +127,6 @@ ScrollView {
     */
     property string saveFilename: ""
     
-    Component.onCompleted: {
-        Modules.IO.initialize({ root, settings, alert })
-    }
-    
     Column {
         spacing: 10
         width: parent.width

LogarithmPlotter/qml/eu/ad5001/LogarithmPlotter/js/autoload.mjs

@@ -18,15 +18,8 @@
 
 import js from "./lib/polyfills/js.mjs"
 
-// Loading modules in order
-import * as Objects from "./module/objects.mjs"
-import * as ExprParser from "./module/expreval.mjs"
+import * as Modules from "./module/index.mjs"
 import * as ObjsAutoload from "./objs/autoload.mjs"
-import * as Latex from "./module/latex.mjs"
-import * as History from "./module/history.mjs"
-import * as CanvasAPI from "./module/canvas.mjs"
-import * as IOAPI from "./module/io.mjs"
-import * as PreferencesAPI from "./module/preferences.mjs"
 
 export * as MathLib from "./math/index.mjs"
 export * as HistoryLib from "./history/index.mjs"

LogarithmPlotter/qml/eu/ad5001/LogarithmPlotter/js/lib/polyfills/qt.mjs

@@ -44,32 +44,3 @@ const Qt = {
         return {x: x, y: y, width: width, height: height};
     }
 }
-
-/** Typehints for Helper. */
-const Helper = {
-    /** @type {function(string): boolean} */
-    getSettingBool: (setting) => true,
-    /** @type {function(string): int} */
-    getSettingInt: (setting) => 0,
-    /** @type {function(string): string} */
-    getSetting: (setting) => '',
-    /** @type {function(string, boolean)} */
-    setSettingBool: (setting, value) => {},
-    /** @type {function(string, int)} */
-    setSettingInt: (setting, value) => 0,
-    /** @type {function(string, string)} */
-    setSetting: (setting, value) => '',
-    /** @type {function(string, string)} */
-    write: (filename, data) => {},
-    /** @type {function(string): string} */
-    load: (filename) => '',
-}
-
-const Latex = {
-    /** @type {function(string, number, string): string} */
-    render: (latex_markup, font_size, color) => '',
-    /** @type {function(string, number, string): string} */
-    findPrerendered: (latex_markup, font_size, color) => '',
-    /** @type {function(): boolean} */
-    checkLatexInstallation: () => true,
-}

LogarithmPlotter/qml/eu/ad5001/LogarithmPlotter/js/math/domain.mjs

@@ -585,13 +585,13 @@ Domain.ZME = new SpecialDomain("ℤ⁻*", x => x % 1 === 0 && x < 0,
     x => Math.min(Math.ceil(x) - 1, -1))
 Domain.ZME.latexMarkup = "\\mathbb{Z}^{-*}"
 Domain.NLog = new SpecialDomain("ℕˡᵒᵍ",
-    x => x / Math.pow(10, x.toString().length - 1) % 1 === 0 && x > 0,
+    x => x / Math.pow(10, Math.ceil(Math.log10(x))) % 1 === 0 && x > 0,
     function(x) {
-        let x10pow = Math.pow(10, x.toString().length - 1)
+        let x10pow = Math.pow(10, Math.ceil(Math.log10(x)))
         return Math.max(1, (Math.floor(x / x10pow) + 1) * x10pow)
     },
     function(x) {
-        let x10pow = Math.pow(10, x.toString().length - 1)
+        let x10pow = Math.pow(10, Math.ceil(Math.log10(x)))
         return Math.max(1, (Math.ceil(x / x10pow) - 1) * x10pow)
     })
 Domain.NLog.latexMarkup = "\\mathbb{N}^{log}"

LogarithmPlotter/qml/eu/ad5001/LogarithmPlotter/js/module/common.mjs

@@ -18,6 +18,9 @@
 
 import { Interface } from "./interface.mjs"
 
+// Define Modules interface before they are imported.
+globalThis.Modules = globalThis.Modules || {}
+
 /**
  * Base class for global APIs in runtime.
  */
@@ -33,6 +36,7 @@ export class Module {
         this.__name = name
         this.__initializationParameters = initializationParameters
         this.initialized = false
+
     }
 
     /**
@@ -42,6 +46,7 @@ export class Module {
     initialize(options) {
         if(this.initialized)
             throw new Error(`Cannot reinitialize module ${this.__name}.`)
+        console.log(`Initializing ${this.__name}...`)
         for(const [name, value] of Object.entries(this.__initializationParameters)) {
             if(!options.hasOwnProperty(name))
                 throw new Error(`Option '${name}' of initialize of module ${this.__name} does not exist.`)

LogarithmPlotter/qml/eu/ad5001/LogarithmPlotter/js/module/history.mjs

@@ -37,7 +37,6 @@ class HistoryAPI extends Module {
 
     initialize({ historyObj, themeTextColor, imageDepth, fontSize }) {
         super.initialize({ historyObj, themeTextColor, imageDepth, fontSize })
-        console.log("Initializing history...")
         this.history = historyObj
         this.themeTextColor = themeTextColor
         this.imageDepth = imageDepth

LogarithmPlotter/qml/eu/ad5001/LogarithmPlotter/js/module/index.mjs

@@ -0,0 +1,35 @@
+/**
+ *  LogarithmPlotter - 2D plotter software to make BODE plots, sequences and distribution functions.
+ *  Copyright (C) 2021-2024  Ad5001
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+import Objects from "./objects.mjs"
+import ExprParser from "./expreval.mjs"
+import Latex from "./latex.mjs"
+import History from "./history.mjs"
+import Canvas from "./canvas.mjs"
+import IO from "./io.mjs"
+import Preferences from "./preferences.mjs"
+
+export default {
+    Objects,
+    ExprParser,
+    Latex,
+    History,
+    Canvas,
+    IO,
+    Preferences
+}

LogarithmPlotter/qml/eu/ad5001/LogarithmPlotter/js/module/interface.mjs

@@ -25,6 +25,7 @@ export const STRING = "string"
 export const BOOLEAN = true
 export const OBJECT = {}
 export const FUNCTION = () => {
+    throw new Error("Cannot call function of an interface.")
 }
 
 
@@ -42,7 +43,7 @@ export class Interface {
         const toCheckName = classToCheck.constructor.name
         for(const [property, value] of Object.entries(properties))
             if(property !== "implement") {
-                if(!classToCheck.hasOwnProperty(property))
+                if(classToCheck[property] === undefined)
                     // Check if the property exist
                     throw new Error(`Property '${property}' (${typeof value}) is present in interface ${interfaceName}, but not in implementation ${toCheckName}.`)
                 else if((typeof value) !== (typeof classToCheck[property]))
@@ -56,15 +57,6 @@ export class Interface {
                         throw new Error(`Property '${property}' of ${interfaceName} implementation ${toCheckName} is not '${value.constructor.name}'.`)
             }
     }
-
-    /**
-     * Decorator to automatically check if a class conforms to the current interface.
-     * @param {object} class_
-     */
-    implement(class_) {
-        Interface.check_implementation(this, class_)
-        return class_
-    }
 }
 
 
@@ -120,3 +112,76 @@ export class HistoryInterface extends Interface {
     unserialize = FUNCTION
     serialize = FUNCTION
 }
+
+export class LatexInterface extends Interface {
+    /**
+     * @param {string} markup - LaTeX markup to render
+     * @param {number} fontSize - Font size (in pt) to render
+     * @param {string} color - Color of the text to render
+     * @returns {string} - Comma separated data of the image (source, width, height)
+     */
+    render = FUNCTION
+    /**
+     * @param {string} markup - LaTeX markup to render
+     * @param {number} fontSize - Font size (in pt) to render
+     * @param {string} color - Color of the text to render
+     * @returns {string} - Comma separated data of the image (source, width, height)
+     */
+    findPrerendered = FUNCTION
+    /**
+     * Checks if the Latex installation is valid
+     * @returns {boolean}
+     */
+    checkLatexInstallation = FUNCTION
+}
+
+export class HelperInterface extends Interface {
+    /**
+     * Gets a setting from the config
+     * @param {string} settingName - Setting (and its dot-separated namespace) to get (e.g. "default_graph.xmin")
+     * @returns {boolean} Value of the setting
+     */
+    getSettingBool = FUNCTION
+    /**
+     * Gets a setting from the config
+     * @param {string} settingName - Setting (and its dot-separated namespace) to get (e.g. "default_graph.xmin")
+     * @returns {number} Value of the setting
+     */
+    getSettingInt = FUNCTION
+    /**
+     * Gets a setting from the config
+     * @param {string} settingName - Setting (and its dot-separated namespace) to get (e.g. "default_graph.xmin")
+     * @returns {string} Value of the setting
+     */
+    getSetting = FUNCTION
+    /**
+     * Sets a setting in the config
+     * @param {string} settingName - Setting (and its dot-separated namespace) to set (e.g. "default_graph.xmin")
+     * @param {boolean} value
+     */
+    setSettingBool = FUNCTION
+    /**
+     * Sets a setting in the config
+     * @param {string} settingName - Setting (and its dot-separated namespace) to set (e.g. "default_graph.xmin")
+     * @param {number} value
+     */
+    setSettingInt = FUNCTION
+    /**
+     * Sets a setting in the config
+     * @param {string} settingName - Setting (and its dot-separated namespace) to set (e.g. "default_graph.xmin")
+     * @param {string} value
+     */
+    setSetting = FUNCTION
+    /**
+     * Sends data to be written
+     * @param {string} file
+     * @param {string} dataToWrite - just JSON encoded, requires the "LPFv1" mime to be added before writing
+     */
+    write = FUNCTION
+    /**
+     * Requests data to be read from a file
+     * @param {string} file
+     * @returns {string} the loaded data - just JSON encoded, requires the "LPFv1" mime to be stripped
+     */
+    load = FUNCTION
+}

LogarithmPlotter/qml/eu/ad5001/LogarithmPlotter/js/module/latex.mjs

@@ -19,6 +19,7 @@
 import { Module } from "./common.mjs"
 import * as Instruction from "../lib/expr-eval/instruction.mjs"
 import { escapeValue } from "../lib/expr-eval/expression.mjs"
+import { HelperInterface, LatexInterface } from "./interface.mjs"
 
 const unicodechars = [
     "α", "β", "γ", "δ", "ε", "ζ", "η",
@@ -60,11 +61,25 @@ class LatexRenderResult {
 
 class LatexAPI extends Module {
     constructor() {
-        super("Latex")
+        super("Latex", {
+            latex: LatexInterface,
+            helper: HelperInterface
+        })
         /**
          * true if latex has been enabled by the user, false otherwise.
          */
-        this.enabled = Helper.getSettingBool("enable_latex")
+        this.enabled = false
+    }
+
+    /**
+     * @param {LatexInterface} latex
+     * @param {HelperInterface} helper
+     */
+    initialize({ latex, helper }) {
+        super.initialize({ latex, helper })
+        this.latex = latex
+        this.helper = helper
+        this.enabled = helper.getSettingBool("enable_latex")
     }
 
     /**
@@ -77,7 +92,8 @@ class LatexAPI extends Module {
      * @returns {LatexRenderResult|null}
      */
     findPrerendered(markup, fontSize, color) {
-        const data = Latex.findPrerendered(markup, fontSize, color)
+        if(!this.initialized) throw new Error("Attempting findPrerendered before initialize!")
+        const data = this.latex.findPrerendered(markup, fontSize, color)
         let ret = null
         if(data !== "")
             ret = new LatexRenderResult(...data.split(","))
@@ -93,7 +109,8 @@ class LatexAPI extends Module {
      * @returns {Promise<LatexRenderResult>}
      */
     async requestAsyncRender(markup, fontSize, color) {
-        let args = Latex.render(markup, fontSize, color).split(",")
+        if(!this.initialized) throw new Error("Attempting requestAsyncRender before initialize!")
+        let args = this.latex.render(markup, fontSize, color).split(",")
         return new LatexRenderResult(...args)
     }
 
@@ -313,5 +330,5 @@ class LatexAPI extends Module {
 
 /** @type {LatexAPI} */
 Modules.Latex = Modules.Latex || new LatexAPI()
-
+/** @type {LatexAPI} */
 export default Modules.Latex

LogarithmPlotter/qml/eu/ad5001/LogarithmPlotter/js/module/preferences.mjs

@@ -34,4 +34,4 @@ class PreferencesAPI extends Module {
 
 /** @type {CanvasAPI} */
 Modules.Preferences = Modules.Preferences || new PreferencesAPI()
-export const API = Modules.Preferences
+export default Modules.Preferences

LogarithmPlotter/util/config.py

@@ -120,11 +120,9 @@ def setSetting(namespace, data):
     """
     names = namespace.split(".")
     setting = current_config
-    for name in names:
-        if name != names[-1]:
+    for name in names[:-1]:
         if name in setting:
             setting = setting[name]
         else:
             raise UnknownNamespaceError(f"Setting {namespace} doesn't exist. Debug: {setting}, {name}")
-        else:
-            setting[name] = data
+    setting[names[-1]] = data

package.json

@@ -4,7 +4,8 @@
   "description": "2D plotter software to make Bode plots, sequences and distribution functions.",
   "main": "LogarithmPlotter/qml/eu/ad5001/LogarithmPlotter/js/autoload.mjs",
   "scripts": {
-    "build": "rollup --config rollup.config.mjs"
+    "build": "rollup --config rollup.config.mjs",
+    "test": "mocha tests/js/**/*.mjs"
   },
   "repository": {
     "type": "git",
@@ -20,5 +21,13 @@
     "install": "^0.13.0",
     "rollup": "^4.22.4",
     "rollup-plugin-cleanup": "^3.2.1"
+  },
+  "devDependencies": {
+    "@types/chai": "^5.0.0",
+    "@types/mocha": "^10.0.8",
+    "chai": "^5.1.1",
+    "chai-as-promised": "^8.0.0",
+    "esm": "^3.2.25",
+    "mocha": "^10.7.3"
   }
 }

tests/js/hooks.mjs

@@ -0,0 +1,30 @@
+/**
+ *  LogarithmPlotter - 2D plotter software to make BODE plots, sequences and distribution functions.
+ *  Copyright (C) 2021-2024  Ad5001
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+import * as fs from "./mock/fs.mjs";
+import Qt from "./mock/qt.mjs";
+import { MockHelper } from "./mock/helper.mjs";
+import { MockLatex } from "./mock/latex.mjs";
+import Modules from "../../LogarithmPlotter/qml/eu/ad5001/LogarithmPlotter/js/module/index.mjs";
+
+function setup() {
+    globalThis.Helper = new MockHelper()
+    globalThis.Latex = new MockLatex()
+    Modules.Latex.initialize({ latex: Latex, helper: Helper })
+}
+
+setup()

tests/js/math/domain.mjs

@@ -0,0 +1,63 @@
+/**
+ *  LogarithmPlotter - 2D plotter software to make BODE plots, sequences and distribution functions.
+ *  Copyright (C) 2021-2024  Ad5001
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+import { describe, it } from "mocha"
+import { expect } from "chai"
+
+import { Domain, parseDomainSimple } from "../../../LogarithmPlotter/qml/eu/ad5001/LogarithmPlotter/js/math/domain.mjs"
+
+describe("math.domain", function() {
+    describe("#parseDomainSimple", function() {
+        it("returns predefined domains", function() {
+            const predefinedToCheck = [
+                // Real domains
+                { domain: Domain.R, shortcuts: ["R", "ℝ"] },
+                // Zero exclusive real domains
+                { domain: Domain.RE, shortcuts: ["RE", "R*", "ℝ*"] },
+                // Real positive domains
+                { domain: Domain.RP, shortcuts: ["RP", "R+", "ℝ⁺", "ℝ+"] },
+                // Zero-exclusive real positive domains
+                { domain: Domain.RPE, shortcuts: ["RPE", "REP", "R+*", "R*+", "ℝ*⁺", "ℝ⁺*", "ℝ*+", "ℝ+*"] },
+                // Real negative domain
+                { domain: Domain.RM, shortcuts: ["RM", "R-", "ℝ⁻", "ℝ-"] },
+                // Zero-exclusive real negative domains
+                { domain: Domain.RME, shortcuts: ["RME", "REM", "R-*", "R*-", "ℝ⁻*", "ℝ*⁻", "ℝ-*", "ℝ*-"] },
+                // Natural integers domain
+                { domain: Domain.N, shortcuts: ["ℕ", "N", "ZP", "Z+", "ℤ⁺", "ℤ+"] },
+                // Zero-exclusive natural integers domain
+                { domain: Domain.NE, shortcuts: ["NE", "NP", "N*", "N+", "ℕ*", "ℕ⁺", "ℕ+", "ZPE", "ZEP", "Z+*", "Z*+", "ℤ⁺*", "ℤ*⁺", "ℤ+*", "ℤ*+"] },
+                // Logarithmic natural domains
+                { domain: Domain.NLog, shortcuts: ["NLOG", "ℕˡᵒᵍ", "ℕLOG"] },
+                // All integers domains
+                { domain: Domain.Z, shortcuts: ["Z", "ℤ"] },
+                // Zero-exclusive all integers domain
+                { domain: Domain.ZE, shortcuts: ["ZE", "Z*", "ℤ*"] },
+                // Negative integers domain
+                { domain: Domain.ZM, shortcuts: ["ZM", "Z-", "ℤ⁻", "ℤ-"] },
+                // Zero-exclusive negative integers domain
+                { domain: Domain.ZME, shortcuts: ["ZME", "ZEM", "Z-*", "Z*-", "ℤ⁻*", "ℤ*⁻", "ℤ-*", "ℤ*-"] },
+            ]
+
+            // Real domains
+            for(const { domain, shortcuts } of predefinedToCheck)
+                for(const shortcut of shortcuts)
+                    expect(parseDomainSimple(shortcut)).to.be.equal(domain)
+        })
+
+    })
+})

tests/js/mock/fs.mjs

@@ -0,0 +1,44 @@
+/**
+ *  LogarithmPlotter - 2D plotter software to make BODE plots, sequences and distribution functions.
+ *  Copyright (C) 2021-2024  Ad5001
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+import { readFileSync as readNode } from "node:fs"
+import { dirname } from 'node:path';
+import { fileURLToPath } from 'node:url';
+
+const __dirname = dirname(fileURLToPath(import.meta.url))
+
+export const HOME = "/home/user"
+export const TMP = "/tmp"
+
+
+const filesystem = {
+    [`${HOME}/test1.lpf`]: readNode(__dirname + "/../../../ci/test1.lpf")
+}
+
+
+export function existsSync(file) {
+    return filesystem[file] !== undefined
+}
+
+export function writeFileSync(file, data, encoding) {
+    filesystem[file] = Buffer.from(data, encoding)
+}
+
+export function readFileSync(file, encoding) {
+    return filesystem[file].toString(encoding)
+}

tests/js/mock/helper.mjs

@@ -0,0 +1,158 @@
+/**
+ *  LogarithmPlotter - 2D plotter software to make BODE plots, sequences and distribution functions.
+ *  Copyright (C) 2021-2024  Ad5001
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+import { readFileSync, writeFileSync, existsSync } from "./fs.mjs"
+
+const DEFAULT_SETTINGS = {
+    "check_for_updates": true,
+    "reset_redo_stack": true,
+    "last_install_greet": "0",
+    "enable_latex": false,
+    "expression_editor": {
+        "autoclose": true,
+        "colorize": true,
+        "color_scheme": 0
+    },
+    "autocompletion": {
+        "enabled": true
+    },
+    "default_graph": {
+        "xzoom": 100,
+        "yzoom": 10,
+        "xmin": 5 / 10,
+        "ymax": 25,
+        "xaxisstep": "4",
+        "yaxisstep": "4",
+        "xlabel": "",
+        "ylabel": "",
+        "linewidth": 1,
+        "textsize": 18,
+        "logscalex": true,
+        "showxgrad": true,
+        "showygrad": true
+    }
+}
+
+export class MockHelper {
+    constructor() {
+        this.__settings = { ...DEFAULT_SETTINGS }
+    }
+
+    __getSetting(settingName) {
+        const namespace = settingName.split(".")
+        let data = this.__settings
+        for(const name of namespace)
+            if(data.hasOwnProperty(name))
+                data = data[name]
+            else
+                throw new Error(`Setting ${namespace} does not exist.`)
+        return data
+    }
+
+    __setSetting(settingName, value) {
+        const namespace = settingName.split(".")
+        const finalName = namespace.pop()
+        let data = this.__settings
+        for(const name of namespace)
+            if(data.hasOwnProperty(name))
+                data = data[name]
+            else
+                throw new Error(`Setting ${namespace} does not exist.`)
+        data[finalName] = value
+    }
+
+    /**
+     * Gets a setting from the config
+     * @param {string} settingName - Setting (and its dot-separated namespace) to get (e.g. "default_graph.xmin")
+     * @returns {boolean} Value of the setting
+     */
+    getSettingBool(settingName) {
+        return this.__getSetting(settingName) === true
+    }
+
+    /**
+     * Gets a setting from the config
+     * @param {string} settingName - Setting (and its dot-separated namespace) to get (e.g. "default_graph.xmin")
+     * @returns {number} Value of the setting
+     */
+    getSettingInt(settingName) {
+        return +(this.__getSetting(settingName))
+    }
+
+    /**
+     * Gets a setting from the config
+     * @param {string} settingName - Setting (and its dot-separated namespace) to get (e.g. "default_graph.xmin")
+     * @returns {string} Value of the setting
+     */
+    getSetting(settingName) {
+        return this.__getSetting(settingName).toString()
+    }
+
+    /**
+     * Sets a setting in the config
+     * @param {string} settingName - Setting (and its dot-separated namespace) to set (e.g. "default_graph.xmin")
+     * @param {boolean} value
+     */
+    setSettingBool(settingName, value) {
+        return this.__setSetting(settingName, value === true)
+    }
+
+    /**
+     * Sets a setting in the config
+     * @param {string} settingName - Setting (and its dot-separated namespace) to set (e.g. "default_graph.xmin")
+     * @param {number} value
+     */
+    setSettingInt(settingName, value) {
+        return this.__setSetting(settingName, +(value))
+    }
+
+    /**
+     * Sets a setting in the config
+     * @param {string} settingName - Setting (and its dot-separated namespace) to set (e.g. "default_graph.xmin")
+     * @param {string} value
+     */
+    setSetting(settingName, value) {
+        return this.__setSetting(settingName, value.toString())
+    }
+
+    /**
+     * Sends data to be written
+     * @param {string} file
+     * @param {string} dataToWrite - just JSON encoded, requires the "LPFv1" mime to be added before writing
+     */
+    write(file, dataToWrite) {
+        writeFileSync(file, "LPFv1" + dataToWrite)
+    }
+
+    /**
+     * Requests data to be read from a file
+     * @param {string} file
+     * @returns {string} the loaded data - just JSON encoded, requires the "LPFv1" mime to be stripped
+     */
+    load(file) {
+        if(existsSync(file)) {
+            const data = readFileSync(file, "utf8")
+            if(data.startsWith("LPFv1"))
+                return data.substring(5)
+            else
+                throw new Error(`Invalid LogarithmPlotter file.`)
+        } else
+            throw new Error(`File not found.`)
+    }
+
+}

tests/js/mock/latex.mjs

@@ -0,0 +1,90 @@
+/**
+ *  LogarithmPlotter - 2D plotter software to make BODE plots, sequences and distribution functions.
+ *  Copyright (C) 2021-2024  Ad5001
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+import { TMP, existsSync, writeFileSync } from "./fs.mjs"
+
+const PIXEL = "iVBORw0KGgoAAAANSUhEUgAAAAEAAAABAQAAAAA3bvkkAAAACklEQVR4AWNgAAAAAgABc3UBGAAAAABJRU5ErkJggg=="
+
+export class MockLatex {
+    constructor() {
+    }
+
+    /**
+     * Creates a simple string hash.
+     * @param {string} string
+     * @return {number}
+     * @private
+     */
+    __hash(string) {
+        let hash = 0
+        let i, chr
+        if(string.length === 0) return hash
+        for(i = 0; i < string.length; i++) {
+            chr = string.charCodeAt(i)
+            hash = ((hash << 5) - hash) + chr
+            hash |= 0 // Convert to 32bit integer
+        }
+        return hash
+    }
+
+    /**
+     *
+     * @param {string} markup
+     * @param {number} fontSize
+     * @param {string} color
+     * @return {string}
+     * @private
+     */
+    __getFileName(markup, fontSize, color) {
+        const name = this.__hash(`${markup}_${fontSize}_${color}`)
+        return `${TMP}/${name}.png`
+    }
+
+    /**
+     * @param {string} markup - LaTeX markup to render
+     * @param {number} fontSize - Font size (in pt) to render
+     * @param {string} color - Color of the text to render
+     * @returns {string} - Comma separated data of the image (source, width, height)
+     */
+    render(markup, fontSize, color) {
+        const file = this.__getFileName(markup, fontSize, color)
+        writeFileSync(file, PIXEL, "base64")
+        return `${file},1,1`
+    }
+
+    /**
+     * @param {string} markup - LaTeX markup to render
+     * @param {number} fontSize - Font size (in pt) to render
+     * @param {string} color - Color of the text to render
+     * @returns {string} - Comma separated data of the image (source, width, height)
+     */
+    findPrerendered(markup, fontSize, color) {
+        const file = this.__getFileName(markup, fontSize, color)
+        if(existsSync(file))
+            return `${file},1,1`
+        return ""
+    }
+
+    /**
+     * Checks if the Latex installation is valid
+     * @returns {boolean}
+     */
+    checkLatexInstallation() {
+        return true // We're not *actually* doing any latex.
+    }
+}

tests/js/mock/qt.mjs

@@ -0,0 +1,60 @@
+/**
+ *  LogarithmPlotter - 2D plotter software to make BODE plots, sequences and distribution functions.
+ *  Copyright (C) 2021-2024  Ad5001
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+// Mock qt methods.
+
+/**
+ * Polyfill for Qt.rect.
+ * @param {number} x
+ * @param {number} y
+ * @param {number} width
+ * @param {number} height
+ * @returns {{x, width, y, height}}
+ */
+function rect(x, y, width, height) {
+    return { x, y, width, height }
+}
+
+/**
+ * Mock for QT_TRANSLATE_NOOP and qsTranslate
+ * @param {string} category
+ * @param {string} string
+ * @return {string}
+ */
+function QT_TRANSLATE_NOOP(category, string) {
+    return string
+}
+
+function setup() {
+    globalThis.Qt = {
+        rect
+    }
+
+    globalThis.QT_TRANSLATE_NOOP = QT_TRANSLATE_NOOP
+    globalThis.qsTranslate = QT_TRANSLATE_NOOP
+
+    String.prototype.arg = function() { return this; } // No need to reimplement it for now.
+}
+
+setup()
+
+export default {
+    rect,
+    QT_TRANSLATE_NOOP,
+    qtTranslate: QT_TRANSLATE_NOOP,
+}