# phpunit/php-code-coverage

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Provides collection, processing, and rendering functionality for PHP code coverage information.

## Installation

You can add this library as a local, per-project dependency to your project using [Composer](https://getcomposer.org/):

```
composer require phpunit/php-code-coverage
```

If you only need this library during development, for instance to run your project's test suite, then you should add it as a development-time dependency:

```
composer require --dev phpunit/php-code-coverage
```

## Usage

### Collecting code coverage data and generating a report

```php
<?php declare(strict_types=1);
use SebastianBergmann\CodeCoverage\CodeCoverage;
use SebastianBergmann\CodeCoverage\Driver\Selector as DriverSelector;
use SebastianBergmann\CodeCoverage\Filter;
use SebastianBergmann\CodeCoverage\Report\Facade as ReportFacade;

$filter = new Filter;

$filter->includeFiles(
    [
        '/path/to/file.php',
        '/path/to/another_file.php',
    ],
);

$coverage = new CodeCoverage(
    (new DriverSelector)->forLineCoverage($filter),
    $filter,
);

$coverage->start('<name of test>');

// ...

$coverage->stop();

ReportFacade::fromObject($coverage)->renderOpenClover('/tmp/openclover.xml');
```

### Generating a report from serialized code coverage data

```php
<?php declare(strict_types=1);
use SebastianBergmann\CodeCoverage\Report\Facade as ReportFacade;
use SebastianBergmann\CodeCoverage\Serialization\Unserializer;

$data = (new Unserializer)->unserialize('/path/to/coverage.php');

ReportFacade::fromSerializedData($data)->renderOpenClover('/tmp/openclover.xml');
```