# umu > WIP - Execute `uvu` tests in real browser environments Latest version **0.0.2** (published 2020-08-04) · MIT license · 0 weekly downloads ## Install ```sh npm install umu pnpm add umu yarn add umu bun add umu ``` Provides the command `umu`. ## Health **Score 15/100 (F)** — status: abandoned. Positive: no vulnerabilities. Warnings: low downloads; no types; no esm support; pre 1.0. Negative: abandoned; low maintenance score. ## Facts | | | |---|---| | Version | 0.0.2 | | Published | 2020-08-04 | | First published | 2020-06-18 | | Weekly downloads | 0 | | License | MIT | | TypeScript types | none | | Module format | CommonJS | | Node | >= 10 | | Dependencies | 9 | | Unpacked size | 12.2 KB | | Known vulnerabilities | 0 | | Install scripts | no | | Maintainers | lukeed | ## Links - npm: https://www.npmjs.com/package/umu - Repository: https://github.com/lukeed/umu - Homepage: https://github.com/lukeed/umu#readme - Issues: https://github.com/lukeed/umu/issues - npm.io page: https://npm.io/package/umu ## Dependencies (9) - [uvu](https://npm.io/package/uvu.md) ^0.3.1 - [sade](https://npm.io/package/sade.md) ^1.7.3 - [kleur](https://npm.io/package/kleur.md) ^4.0.0 - [rollup](https://npm.io/package/rollup.md) ^2.23.0 - [escalade](https://npm.io/package/escalade.md) ^3.0.1 - [playwright](https://npm.io/package/playwright.md) ^1.1.0 - [@rollup/plugin-replace](https://npm.io/package/@rollup/plugin-replace.md) ^2.3.3 - [@rollup/plugin-commonjs](https://npm.io/package/@rollup/plugin-commonjs.md) ^14.0.0 - [@rollup/plugin-node-resolve](https://npm.io/package/@rollup/plugin-node-resolve.md) ^8.4.0 ## Recent versions - 0.0.2 (latest) — 2020-08-04 - 0.0.1 — 2020-08-04 - 0.0.0 — 2020-06-18 ## README # umu > WIP: Execute [`uvu`](https://github.com/lukeed/uvu) tests in real browser environments > **Important:** Currently only `playwright` is supported (WIP)! > **Important:** The `playwright` and/or `puppeteer` APIs are not (currently) accessible to your test code. ## Usage Unlike `uvu`, the `umu` CLI is required (for now). The `umu` CLI manages browser orchestration, test bundling, and test execution. Let's take a look at the CLI's help text: ``` $ umu --help # # Usage # $ umu [dir] [pattern] [options] # # Options # -C, --cwd The current directory to resolve from (default .) # -b, --bail Exit on first failure # -i, --ignore Any file patterns to ignore # -r, --require Additional module(s) to preload # -B, --browser The browser engine to launch. Must be one of "chromium", "firefox", or "webkit". (default chromium) # -c, --coverage Gather coverage information for source files. Requires "chromium" browser. # -d, --devtools Open the Developer Tools panel. Requires "chromium" browser. # -H, --headless Runs the browser in headless mode. (default true) # -v, --version Displays current version # -h, --help Displays this message # ``` If you're familiar with `uvu`, you'll notice that this is familiar. By design, the `umu` CLI is backwards compatible with the `uvu` CLI. This means that you can replace any previous instances of `uvu` with `umu` and your tests will automagically run inside a browser! ```diff -$ uvu packages test -i fixtures -r ts-node/register +$ umu packages test -i fixtures -r ts-node/register ``` You can customize the browser selection (`playwright` only) or browser execution settings through the _additional_ option flags that `umu` brings. ## Bundling > **TODO:**: This may become an optional step (See [#3](https://github.com/lukeed/umu/issues/3)) After [matching test files](https://github.com/lukeed/uvu/blob/master/docs/cli.md#matching), `umu` bundles each test file individually via [Rollup](https://rollupjs.org/). By default, `umu` includes the bare minimum amount of Rollup configuration so that your tests can be executed within the browser. This includes: * Producing a single-file bundle * Inlining all `import` and `require` statements * Replacing references to `process.env`, `process.env.NODE_ENV`, and `process.browser` * Including an inline source map Any further customization – for example, defining import aliases, custom transforms, etc – must be handled through the `umu.config.js` file. Please see [Config](#config) for more information. ## Config > **TODO:** The format/keys will most likely change (See [#2](https://github.com/lukeed/umu/issues/2)) When defined, a `umu.config.js` file must export a function. It will receive two parameters: * `config` — the WIP [Rollup configuration](https://rollupjs.org/guide/en/#big-list-of-options) object * `options` — an object of options for a set of included Rollup plugins: * `options.resolve` — options for [`@rollup/plugin-node-resolve`](https://www.npmjs.com/package/@rollup/plugin-node-resolve) * `options.commonjs` — options for [`@rollup/plugin-commonjs`](https://www.npmjs.com/package/@rollup/plugin-commonjs) * `options.replace` — options for [`@rollup/plugin-replace`](https://www.npmjs.com/package/@rollup/plugin-replace) Your function **must** mutate `config` (and `options` optionally) in order to produce a satisfactory Rollup configuration. The plugins tied to `options` are pushed into `config.plugins` for you. > **Important:** The `config.output.format` and `config.output.sourcemap` values are controlled. ### Locations A `umu.config.js` file can be defined anywhere that is accessible to your `process.cwd()` location. Typically, you'll only ever need one configuration file per project, but there _may be_ times where you need multiple configuration files per directory/workspace. In these cases, a configuration file will be automatically loaded depending on where `umu` is invoked. Let's assume this project structure: ``` my-library ├── package.json ├── umu.config.js └── packages └── hello ├── umu.config.js └── test └── ... └── world └── test └── ... ``` And then let's assume we run the following commands from the project root (`my-library`): ```sh $ umu packages test #=> "hello" tests use `my-library/umu.config.js` (root) #=> "world" tests use `my-library/umu.config.js` (root) $ umu test --cwd packages/hello #=> "hello" tests use `my-library/packages/hello/umu.config.js` (scoped) $ umu test --cwd packages/world #=> "world" tests use `my-library/umu.config.js` (root) ``` ## License MIT © [Luke Edwards](https://lukeed.com) --- _Source: https://npm.io/package/umu · Machine-readable twin of the npm.io package page. Health data is recomputed on every publish._