Litest - Lite lit tests (litests)

An extremely small unit testing library.

About

Litest is licensed under the MIT license and has been written by Lars Mueller alias LMD or appgurueu.

Features

• Lightweight
• Maintainable code
• Good performance
• Easy to use
• Basic functionality

API

The API can read Lua 5.4 compatible Luon, but writes Lua 5.1 compatible Luon. Methods may raise errors for invalid objects (for instance functions) or invalid Luon.

Installation

Install the NPM package litests:

npm install litests

Import

const litest=require("litests");

Versions

• 1.0.0
  • Initial version
• 1.0.1
  • Documentation improvements & fixes
• 1.0.2
  • Fixed links in package.json
• 1.0.3
  • Removed unneeded dependency in package.json
• 1.0.4
  • Fixed bug concerning object equality in ValueExpectation
• 1.0.5
  • Fixed the fix
• 1.0.6
  • Fixed objects referencing themselves

Expectations

Litest works using expectations - objects which verify whether given output is valid using expectation.isValid(out).

ValueExpectation

• constructor(value): Creates an expectation
• isValid(out): Returns whether the given out equals the value

AnyOfExpectation

• constructor(values): Creates ValueExpectations for each value
• isValid(out): Checks if any value matches out

Testers

Testers carry out test series and display total results.

Tester

• constructor(func): create a Tester for a function
• test(input, expectation): test whether a certain expectation is met
• testAll(tests, expectation_constructor): test whether expectations are met for all tests
  • if an object is passed, input are keys & out are values
  • if an array is passed, all i-th values are input and all (i+1)-th ones are desired output
• testEquals(input, value): shorthand for test(input, new ValueExpectation(value))
• testEqualsAll(tests, value): also a shorthand - for testAll(tests, ValueExpectation)
• passedTests(): how many tests have passed is displayed

BulkTester

• constructor(func): create a BulkTester for a namespace/object containing multiple functions

Example

Luon uses Litest; below is an excerpt:

const litest = require("litests");
const luon = require("./index.js");

new litest.BulkTester(luon).testEqualsAll([
    "read",
    {
        "true": true,
        "false": false,
        "nil": undefined,
        "'\\226\\130\\172'": "€",
        "'\\xF0\\x90\\x8D\\x88'": "𐍈", // two character utf 16
        /* UTF-8 escape sequences to UTF-16 conversion */
        "{a=1}": {
            a: 1
        },
        "{[ [[yay]]]=true}": {
            yay: true
        },
        "{   much    =   'spacing'   }": {
            much: "spacing"
        }
    },
    "readRemoveComments", {
        "10--comment": 10,
        "10--[[comment]]0": 100,
    },
    "removeCommentsText",
    {
        "some--comment": "some",
        "some--[[multi-line comment]]": "some",
        "some--[===[multi-line comment]===]": "some",
    },
    "removeSpacingText",
    {
        "some tests": "sometests",
        "'some tests'": "'some tests'",
        "[===[some tests]===]": "[===[some tests]===]"
    },
    "writeText",
    [
        [true, false, true, undefined], "{true,false,true,nil}",
        "€", '"€"'
    ],
    "writeCompressedText",
    [
        "test'test", '"test\'test"'
    ],
    "writeBeautifiedText",
    [
        [true, false, true, undefined], "{\n  true,\n  false,\n  true,\n  nil\n}",
        [
            [1, 2],
            [3, 4]
        ], "{\n  {\n    1,\n    2\n  },\n  {\n    3,\n    4\n  }\n}"
    ]
]);