# @rgrannell/testing > test utilities Latest version **9.4.0** (published 2020-07-08) · MIT license · 0 weekly downloads ## Install ```sh npm install @rgrannell/testing pnpm add @rgrannell/testing yarn add @rgrannell/testing bun add @rgrannell/testing ``` ## Health **Score 15/100 (F)** — status: abandoned. Positive: no vulnerabilities. Warnings: low downloads; no types; no esm support. Negative: abandoned; low maintenance score. ## Facts | | | |---|---| | Version | 9.4.0 | | Published | 2020-07-08 | | First published | 2018-07-26 | | Weekly downloads | 0 | | License | MIT | | TypeScript types | none | | Module format | CommonJS | | Dependencies | 4 | | Unpacked size | 22.1 KB | | Known vulnerabilities | 0 | | Install scripts | no | | Maintainers | rgrannell | ## Links - npm: https://www.npmjs.com/package/@rgrannell/testing - npm.io page: https://npm.io/package/@rgrannell/testing ## Dependencies (4) - [chai](https://npm.io/package/chai.md) ^4.1.2 - [sinon](https://npm.io/package/sinon.md) ^6.1.4 - [yamljs](https://npm.io/package/yamljs.md) ^0.3.0 - [@rgrannell/chain](https://npm.io/package/@rgrannell/chain.md) ^9.4.0 ## Recent versions - 9.4.0 (latest) — 2020-07-08 - 8.1.0-alpha.49d6f21a (canary) — 2018-08-02 - 9.3.0 — 2020-07-08 - 9.2.0 — 2020-07-07 - 9.1.0 — 2019-10-01 - 9.0.0 — 2019-09-01 - 8.4.0 — 2019-08-11 - 8.2.0 — 2018-08-06 - 8.1.0 — 2018-08-04 - 8.1.0-alpha.99dad58c — 2018-07-27 - 8.1.0-alpha.278140ed — 2018-07-26 ## README # testing (v9.3.0) ## Stability > 0 - Experimental test utilities ## Overview `testing` is a simple test-runner that allows you to describe tests in terms of: - expectations & predicates - hypotheses - theories composed of hypotheses this framework is a pure-JS test-runner, as opposed to `mocha` or `ava` which requires you to use external binaries. ## Usage ```js const { hypothesis, theory } = require('@rgrannell/testing') const hypotheses = {} hypotheses.add = hypothesis('adding zero to a number returns that number') .cases(function * () { yield [1] yield [2] yield [3] }) .always(num => { return num + 0 === num }) theory({ description: 'Establish basic laws of addition are satisfied over numeric inputs' }) .givenAll(hypotheses) ``` ## Table of Contents - [given](#given) * [Parameters](#parameters) - [givenAll](#givenall) * [Parameters](#parameters-1) - [always](#always) * [Parameters](#parameters-2) - [run](#run) * [Parameters](#parameters-3) - [theory.run](#theoryrun) - [testing.theory](#testingtheory) - [failed](#failed) * [Parameters](#parameters-4) - [passed](#passed) * [Parameters](#parameters-5) - [errored](#errored) * [Parameters](#parameters-6) - [failed](#failed-1) - [passed](#passed-1) - [errored](#errored-1) - [percentages](#percentages) - [tap](#tap) * [Parameters](#parameters-7) * [Parameters](#parameters-8) - [hypothesis](#hypothesis) * [Parameters](#parameters-9) ## API Documentation ## given ### Parameters - `state` - `hypothesis` **[Object][1]** a hypothesis object. Returns **[Object][1]** an object with several methods:- given() - givenAll() - run() ## givenAll ### Parameters - `state` - `hypotheses` **[Object][1]** an object of name - hypothesis mappings. Returns **[Object][1]** an object with several methods:- given() - givenAll() - run() ## always ### Parameters - `state` - `condition` **[function][2]** a function returning true or false Returns **[Object][1]** an object with the following methods:- always() - run() ## run ### Parameters - `state` Returns **HypothesisResultSet** a description of the test-execution ## theory.run Returns **theoryResultSet** returns a data-model ## testing.theory Returns **[Object][1]** returns an object with several methods:- .run() - .given() - .givenAll() ## failed Validate & construct failed hypotheses results ### Parameters - `$0` **[Object][1]** - `$0.condition` - `$0.testCase` - `$0.hypothesis` Returns **[Object][1]** ## passed Validate & construct passed hypotheses results ### Parameters - `$0` **[Object][1]** - `$0.condition` - `$0.testCase` - `$0.hypothesis` Returns **[Object][1]** ## errored Validate & construct errored hypotheses results ### Parameters - `$0` **[Object][1]** - `$0.condition` - `$0.testCase` - `$0.hypothesis` - `$0.error` Returns **[Object][1]** ## Returns **[Array][3]<HypothesisResult>** all test-results ## failed Returns **[Array][3]<HypothesisResult>** all test-results ## passed Returns **[Array][3]<HypothesisResult>** passed test-results ## errored Returns **[Array][3]<HypothesisResult>** error-throwing test-results ## percentages Returns **[Object][1]** an object describing the test-results. Contains the fields:- results the raw test-results - status - pct: - failed: the percentage of failed results - passed: the percentage of passed results - errored: the percentage of error-throwing results ## tap Create a TAP report for a test-run. ### Parameters - `results` **[Array][3]<[Object][1]>** An array of test-results - `opts` **[Object][1]** Various options Returns **[undefined][4]** ## ### Parameters - `generator` **GeneratorFunction** a function yielding test-cases Returns **[Object][1]** an object with the following methods:- always() ## hypothesis ### Parameters - `hypothesis` **[string][5]** a description of the hypothesis Returns **[Object][1]** an object with the method:- cases() [1]: https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object [2]: https://developer.mozilla.org/docs/Web/JavaScript/Reference/Statements/function [3]: https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array [4]: https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/undefined [5]: https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/String ## Dependencies - Node.js >= v10.6.0 - NPM >= v10.6.0 ## License Copyright (c) 2020 Róisín Grannell Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. 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