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149 lines
8.5 KiB
149 lines
8.5 KiB
# solidity-coverage
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[](https://gitter.im/sc-forks/solidity-coverage?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
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[](https://badge.fury.io/js/solidity-coverage)
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[](https://circleci.com/gh/sc-forks/solidity-coverage)
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[](https://codecov.io/gh/sc-forks/solidity-coverage)
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### Code coverage for Solidity testing
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+ For more details about what this is, how it works and potential limitations, see
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[the accompanying article](https://blog.colony.io/code-coverage-for-solidity-eecfa88668c2).
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+ `solidity-coverage` is in development and **its accuracy is unknown.** If you
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find discrepancies between the coverage report and your suite's behavior, please open an
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[issue](https://github.com/sc-forks/solidity-coverage/issues).
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+ `solidity-coverage` is [Solcover](https://github.com/JoinColony/solcover)
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### Install
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```
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$ npm install --save-dev solidity-coverage
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```
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### Run
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```
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$ npx solidity-coverage
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```
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**NB:** Most projects will also need to set a `coverage` network in
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truffle-config.js. See [Network Configuration](#network-configuration).
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### Usage notes:
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+ For pragma solidity >=0.4.22 <0.6.0 / Petersburg.
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+ Tests run more slowly while coverage is being generated.
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+ Your contracts will be double-compiled and a (long) delay between compilation and
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the beginning of test execution is possible if your contracts are large.
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+ Truffle should be globallly installed in your environment.. If you prefer running truffle as
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a local dependency, please see [this section](https://github.com/sc-forks/solidity-coverage/blob/master/docs/faq.md#running-truffle-as-a-local-dependency) of the FAQ.
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+ If your suite uses native Solidity testing or accesses contracts via mocks stored in `tests/` (a la Zeppelin), coverage will trigger test errors because it can't control the way truffle compiles that folder. Mocks should be relocated to the root `contracts` directory. More on why this is necessary at issue [146](https://github.com/sc-forks/solidity-coverage/issues/146)
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### Network Configuration
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By default, this tool connects to a coverage-enabled fork of ganache-cli
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called **testrpc-sc** on port 8555. (It's a dependency - there's nothing extra to download.)
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In `truffle-config.js`, add a coverage network following the example below.
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**Example**
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```javascript
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module.exports = {
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networks: {
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development: {
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host: "localhost",
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port: 8545,
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network_id: "*"
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},
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coverage: {
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host: "localhost",
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network_id: "*",
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port: 8555, // <-- If you change this, also set the port option in .solcover.js.
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gas: 0xfffffffffff, // <-- Use this high gas value
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gasPrice: 0x01 // <-- Use this low gas price
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},
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...etc...
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}
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};
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```
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### Options
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Additional options can be specified in a `.solcover.js` config file located in
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the root directory of your project.
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**Example:**
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```javascript
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module.exports = {
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port: 6545,
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testrpcOptions: '-p 6545 -u 0x54fd80d6ae7584d8e9a19fe1df43f04e5282cc43',
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testCommand: 'mocha --timeout 5000',
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norpc: true,
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dir: './secretDirectory',
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copyPackages: ['openzeppelin-solidity'],
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skipFiles: ['Routers/EtherRouter.sol']
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};
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```
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| Option | Type | Default | Description |
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| ------ | ---- | ------- | ----------- |
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| accounts | *Number* | 35 | Number of accounts to launch testrpc with. |
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| port | *Number* | 8555 | Port to run testrpc on / have truffle connect to |
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| norpc | *Boolean* | false | Prevent solidity-coverage from launching its own testrpc. Useful if you are managing a complex test suite with a [shell script](https://github.com/OpenZeppelin/openzeppelin-solidity/blob/ed872ca0a11c4926f8bb91dd103bea1378a3384c/scripts/coverage.sh) |
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| testCommand | *String* | `truffle test` | Run an arbitrary test command. ex: `mocha --timeout 5000`. NB: Also set the `port` option to whatever your tests require (probably 8545). |
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| testrpcOptions | *String* | `--port 8555` | options to append to a command line invocation of testrpc. NB: Using this overwrites the defaults so always specify a port in this string *and* in the `port` option |
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| copyNodeModules | *Boolean* | false | :warning: **DEPRECATED** use `copyPackages` instead :warning: Copies `node_modules` into the coverage environment. May significantly increase the time for coverage to complete if enabled. Useful if your contracts import solidity files from an npm installed package (and your node_modules is small). |
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| copyPackages | *Array* | `[]` | Copies specific `node_modules` packages into the coverage environment. May significantly reduce the time for coverage to complete compared to `copyNodeModules`. Useful if your contracts import solidity files from an npm installed package. |
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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. `Migrations.sol` is skipped by default, and does not need to be added to this configuration option if it is used. |
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| deepSkip | boolean | false | Use this if instrumentation hangs on large, skipped files (like Oraclize). It's faster. |
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| dir | *String* | `.` | Solidity-coverage copies all the assets in your root directory (except `node_modules`) to a special folder where it instruments the contracts and executes the tests. `dir` allows you to define a relative path from the root directory to those assets. Useful if your contracts & tests are within their own folder as part of a larger project.|
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| buildDirPath | *String* | `/build/contracts` | Build directory path for compiled smart contracts
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### FAQ
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Solutions to common problems people run into:
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+ [Running out of gas](https://github.com/sc-forks/solidity-coverage/blob/master/docs/faq.md#running-out-of-gas)
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+ [Running out of memory (locally and in CI)](https://github.com/sc-forks/solidity-coverage/blob/master/docs/faq.md#running-out-of-memory-locally-and-in-ci)
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+ [Running out of time (in mocha)](https://github.com/sc-forks/solidity-coverage/blob/master/docs/faq.md#running-out-of-time-in-mocha)
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+ [Running on windows](https://github.com/sc-forks/solidity-coverage/blob/master/docs/faq.md#running-on-windows)
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+ [Running testrpc-sc on its own](https://github.com/sc-forks/solidity-coverage/blob/master/docs/faq.md#running-testrpc-sc-on-its-own)
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+ [Running truffle as a local dependency](https://github.com/sc-forks/solidity-coverage/blob/master/docs/faq.md#running-truffle-as-a-local-dependency)
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+ [Integrating into CI](https://github.com/sc-forks/solidity-coverage/blob/master/docs/faq.md#continuous-integration-installing-metacoin-on-travisci-with-coveralls)
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+ [Why are asserts and requires highlighted as branch points?](https://github.com/sc-forks/solidity-coverage/blob/master/docs/faq.md#why-has-my-branch-coverage-decreased-why-is-assert-being-shown-as-a-branch-point)
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### Example reports
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+ [metacoin](https://sc-forks.github.io/metacoin/) (Istanbul HTML)
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+ [openzeppelin-solidity](https://coveralls.io/github/OpenZeppelin/openzeppelin-solidity?branch=master) (Coveralls)
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### Contribution Guidelines
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Contributions are welcome! If you're opening a PR that adds features please consider writing some
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[unit tests](https://github.com/sc-forks/solidity-coverage/tree/master/test) for them. Bugs can be
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reported in the [issues](https://github.com/sc-forks/solidity-coverage/issues).
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Set up the development environment with:
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```
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$ git clone https://github.com/sc-forks/solidity-coverage.git
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$ yarn
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```
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### Contributors
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+ [@area](https://github.com/area)
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+ [@cgewecke](https://github.com/cgewecke)
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+ [@adriamb](https://github.com/adriamb)
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+ [@cag](https://github.com/cag)
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+ [@maurelian](https://github.com/maurelian)
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+ [@rudolfix](https://github.com/rudolfix)
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+ [@phiferd](https://github.com/phiferd)
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+ [@e11io](https://github.com/e11io)
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+ [@elenadimitrova](https://github.com/elenadimitrova)
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+ [@ukstv](https://github.com/ukstv)
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+ [@vdrg](https://github.com/vdrg)
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+ [@andresliva](https://github.com/andresilva)
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+ [@DimitarSD](https://github.com/DimitarSD)
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+ [@sohkai](https://github.com/sohkai)
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+ [@bingen](https://github.com/bingen)
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+ [@pinkiebell](https://github.com/pinkiebell)
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+ [@obernardovieira](https://github.com/obernardovieira)
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+ [@angus-hamill](https://github.com/angus-hamill)
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