Code coverage for Solidity smart-contracts

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README.md

solidity-coverage

Code coverage for Solidity testing

For more details about what this is, how it works and potential limitations, see the accompanying article.
solidity-coverage is in development and its accuracy is unknown. If you find discrepancies between the coverage report and your suite's behavior, please open an issue.
solidity-coverage is Solcover

Install

$ npm install --save-dev solidity-coverage@beta

Usage notes:

Coverage runs tests a little more slowly.
Coverage distorts gas consumption. Tests that check exact gas consumption should be skipped.
Coverage launches its own in-process ganache server.
You can set ganache options using the providerOptions key in your .solcover.js config.

Truffle V5

Add "solidity-coverage" to your plugins array in truffle-config.js

module.exports = {
  networks: {...},
  plugins: ["solidity-coverage"]
}

Run

truffle run coverage [options]

Command Options

Option	Example	Description
file	`--file="test/registry/*.js"`	Filename or glob describing a subset of JS tests to run. (Globs must be enclosed by quotes.)
solcoverjs	`--solcoverjs ./../.solcover.js`	Relative path from working directory to config. Useful for monorepo packages that share settings. (Path must be "./" prefixed)
version		Version info
help		Usage notes

Config Options

Additional options can be specified in a .solcover.js config file located in the root directory of your project.

Example:

module.exports = {
  skipFiles: ['Routers/EtherRouter.sol']
};

Option	Type	Default	Description
silent	Boolean	false	Suppress logging output
client	Object	`require("ganache-core")`	Useful if you need a specific ganache version.
providerOptions	Object	`{ }`	ganache-core options
skipFiles	Array	`['Migrations.sol']`	Array of contracts or folders (with paths expressed relative to the `contracts` directory) that should be skipped when doing instrumentation.
istanbulReporter	Array	`['html', 'lcov', 'text']`	Istanbul coverage reporters
mocha	Object	`{ }`	Mocha options to merge into existing mocha config. `grep` and `invert` are useful for skipping certain tests under coverage using tags in the test descriptions.
onServerReady	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
onTestsComplete	Function		Hook run after the tests complete, before Istanbul reports are generated.
onIstanbulComplete	Function		Hook run after the Istanbul reports are generated, before the ganache server is shut down. Useful if you need to clean resources up.

FAQ

Common problems & questions:

Example reports

metacoin (Istanbul HTML)
openzeppelin-solidity (Coveralls)

Contribution Guidelines

Contributions are welcome! If you're opening a PR that adds features please consider writing some unit tests for them. Bugs can be reported in the issues.

Set up the development environment with:

$ git clone https://github.com/sc-forks/solidity-coverage.git
$ yarn