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131 lines
6.9 KiB
131 lines
6.9 KiB
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# solidity-coverage
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Solidity code coverage plugin for [Hardhat](http://hardhat.org).
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## What
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![coverage example][22]
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+ For more details about how it works and potential limitations, see [the accompanying article][16].
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+ `solidity-coverage` is also [JoinColony/solcover][17]
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## Installation
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```bash
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$ npm install --save-dev solidity-coverage
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```
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And add the following to your `.config.js`:
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```js
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require("solidity-coverage");
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```
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Or, if you are using TypeScript, add this to your hardhat.config.ts:
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```ts
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import "solidity-coverage"
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```
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## Tasks
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This plugin implements a `coverage` task
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```bash
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npx hardhat coverage [options]
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```
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| Option <img width=200/> | Example <img width=750/>| Description <img width=1000/> |
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|--------------|------------------------------------|--------------------------------|
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| testfiles | `--testfiles "test/registry/*.ts"` | Test file(s) to run. (Globs must be enclosed by quotes.)|
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| solcoverjs | `--solcoverjs ./../.solcover.js` | Relative path from working directory to config. Useful for monorepo packages that share settings. (Path must be "./" prefixed) |
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| network | `--network development` | Run with a ganache client over http using network settings defined in `hardhat.config.js`. (Hardhat is the default network) |
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## Configuration
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Options can be specified in a `.solcover.js` config file located in the root directory of your project.
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**Config Example:**
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```javascript
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module.exports = {
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skipFiles: ['Routers/EtherRouter.sol']
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};
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```
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| Option <img width=200/>| Type <img width=200/> | Default <img width=1300/> | Description <img width=800/> |
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| ------ | ---- | ------- | ----------- |
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| silent | *Boolean* | false | Suppress logging output |
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| client | *Object* | undefined | *Ganache only*: Useful if you need a specific ganache version. An example value is: `require('ganache-cli')` |
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| providerOptions | *Object* | `{ }` | *Ganache only*: [ganache-core options][1] |
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| skipFiles | *Array* | `['Migrations.sol']` | Array of contracts or folders (with paths expressed relative to the `contracts` directory) that should be skipped when doing instrumentation. |
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| istanbulFolder | *String* | `./coverage` | Folder location for Istanbul coverage reports. |
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| istanbulReporter | *Array* | `['html', 'lcov', 'text', 'json']` | [Istanbul coverage reporters][2] |
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| mocha | *Object* | `{ }` | [Mocha options][3] to merge into existing mocha config. `grep` and `invert` are useful for skipping certain tests under coverage using tags in the test descriptions.|
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| onServerReady[<sup>*</sup>][14] | *Function* | | Hook run *after* server is launched, *before* the tests execute. Useful if you need to use the Oraclize bridge or have setup scripts which rely on the server's availability. [More...][23] |
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| onCompileComplete[<sup>*</sup>][14] | *Function* | | Hook run *after* compilation completes, *before* tests are run. Useful if you have secondary compilation steps or need to modify built artifacts. [More...][23]|
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| onTestsComplete[<sup>*</sup>][14] | *Function* | | Hook run *after* the tests complete, *before* Istanbul reports are generated. [More...][23]|
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| onIstanbulComplete[<sup>*</sup>][14] | *Function* | | Hook run *after* the Istanbul reports are generated, *before* the ganache server is shut down. Useful if you need to clean resources up. [More...][23]|
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[<sup>*</sup> Advanced use][14]
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## Usage
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+ Coverage runs tests a little more slowly.
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+ Coverage uses the Hardhat network by default.
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+ Coverage [distorts gas consumption][13]. Tests that check exact gas consumption should be [skipped][24].
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+ :warning: Contracts are compiled **without optimization**. Please report unexpected compilation faults to [issue 417][25]
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## Using with ganache
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Begining with `v0.7.12`, this plugin runs directly on the Hardhat network by default (for speed).
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If you want to use a ganache based http network, you can specify it by name using the `--network` cli option. The plugin will then launch its own coverage enabled ganache instance which can be configured in `.solcover.js` via the `providerOptions` key.
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## Documentation
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More documentation, including FAQ and information about solidity-coverage's API [is available here][28].
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[1]: https://github.com/trufflesuite/ganache-core#options
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[2]: https://istanbul.js.org/docs/advanced/alternative-reporters/
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[3]: https://mochajs.org/api/mocha
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[4]: https://github.com/sc-forks/solidity-coverage/blob/master/docs/faq.md#running-out-of-gas
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[5]: https://github.com/sc-forks/solidity-coverage/blob/master/docs/faq.md#running-out-of-memory
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[6]: https://github.com/sc-forks/solidity-coverage/blob/master/docs/faq.md#running-out-of-time
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[7]: https://github.com/sc-forks/solidity-coverage/blob/master/docs/faq.md#continuous-integration
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[8]: https://github.com/sc-forks/solidity-coverage/blob/master/docs/faq.md#notes-on-branch-coverage
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[9]: https://sc-forks.github.io/metacoin/
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[10]: https://coveralls.io/github/OpenZeppelin/openzeppelin-solidity?branch=master
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[11]: https://github.com/sc-forks/solidity-coverage/tree/master/test/units
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[12]: https://github.com/sc-forks/solidity-coverage/issues
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[13]: https://github.com/sc-forks/solidity-coverage/blob/master/docs/faq.md#notes-on-gas-distortion
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[14]: https://github.com/sc-forks/solidity-coverage/blob/master/docs/advanced.md
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[15]: #config-options
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[16]: https://blog.colony.io/code-coverage-for-solidity-eecfa88668c2
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[17]: https://github.com/JoinColony/solcover
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[18]: https://gitter.im/sc-forks/solidity-coverage?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge
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[19]: https://badge.fury.io/js/solidity-coverage
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[20]: https://circleci.com/gh/sc-forks/solidity-coverage
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[21]: https://codecov.io/gh/sc-forks/solidity-coverage
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[22]: https://cdn-images-1.medium.com/max/800/1*uum8t-31bUaa6dTRVVhj6w.png
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[23]: https://github.com/sc-forks/solidity-coverage/blob/master/docs/advanced.md#workflow-hooks
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[24]: https://github.com/sc-forks/solidity-coverage/blob/master/docs/advanced.md#skipping-tests
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[25]: https://github.com/sc-forks/solidity-coverage/issues/417
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[26]: https://hardhat.org/
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[27]: https://www.trufflesuite.com/docs
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[28]: https://github.com/sc-forks/solidity-coverage/blob/master/docs/api.md
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[29]: https://github.com/sc-forks/solidity-coverage/blob/master/docs/upgrade.md#upgrading-from-06x-to-070
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[30]: https://github.com/sc-forks/solidity-coverage/tree/0.6.x-final#solidity-coverage
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[31]: https://github.com/sc-forks/solidity-coverage/releases/tag/v0.7.0
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[32]: https://github.com/sc-forks/buidler-e2e/tree/coverage
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[33]: https://github.com/sc-forks/moloch
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[34]: https://github.com/sc-forks/solidity-coverage/blob/master/docs/advanced.md#reducing-the-instrumentation-footprint
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