238 lines
8.1 KiB
Markdown
238 lines
8.1 KiB
Markdown
[](https://tester.nette.org)
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[](https://packagist.org/packages/nette/tester)
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[](https://github.com/nette/tester/actions)
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[](https://github.com/nette/tester/releases)
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[](https://github.com/nette/tester/blob/master/license.md)
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<!---->
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Introduction
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------------
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Nette Tester is a productive and enjoyable unit testing framework. It's used by
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the [Nette Framework](https://nette.org) and is capable of testing any PHP code.
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Documentation is available on the [Nette Tester website](https://tester.nette.org).
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Read the [blog](https://blog.nette.org/category/tester/) for new information.
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<!---->
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[Support Tester](https://github.com/sponsors/dg)
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--------------------------------------------
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Do you like Nette Tester? Are you looking forward to the new features?
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[](https://github.com/sponsors/dg)
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Thank you!
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<!---->
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Installation
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------------
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The recommended way to install Nette Tester is through Composer:
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```
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composer require nette/tester --dev
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```
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Alternatively, you can download the [tester.phar](https://github.com/nette/tester/releases) file.
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Nette Tester 2.5 is compatible with PHP 8.0 to 8.3. Collecting and processing code coverage information depends on Xdebug or PCOV extension, or PHPDBG SAPI.
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<!---->
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Writing Tests
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-------------
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Imagine that we are testing this simple class:
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```php
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class Greeting
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{
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function say($name)
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{
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if (!$name) {
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throw new InvalidArgumentException('Invalid name.');
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}
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return "Hello $name";
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}
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}
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```
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So we create test file named `greeting.test.phpt`:
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```php
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require 'src/bootstrap.php';
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use Tester\Assert;
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$h = new Greeting;
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// use an assertion function to test say()
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Assert::same('Hello John', $h->say('John'));
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```
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Thats' all!
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Now we run tests from command-line using the `tester` command:
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```
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> tester
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_____ ___ ___ _____ ___ ___
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|_ _/ __)( __/_ _/ __)| _ )
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|_| \___ /___) |_| \___ |_|_\ v2.5
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PHP 8.2.0 | php -n | 8 threads
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.
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OK (1 tests, 0 skipped, 0.0 seconds)
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```
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Nette Tester prints dot for successful test, F for failed test
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and S when the test has been skipped.
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<!---->
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Assertions
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----------
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This table shows all assertions (class `Assert` means `Tester\Assert`):
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- `Assert::same($expected, $actual)` - Reports an error if $expected and $actual are not the same.
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- `Assert::notSame($expected, $actual)` - Reports an error if $expected and $actual are the same.
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- `Assert::equal($expected, $actual)` - Like same(), but identity of objects and the order of keys in the arrays are ignored.
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- `Assert::notEqual($expected, $actual)` - Like notSame(), but identity of objects and arrays order are ignored.
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- `Assert::contains($needle, array $haystack)` - Reports an error if $needle is not an element of $haystack.
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- `Assert::contains($needle, string $haystack)` - Reports an error if $needle is not a substring of $haystack.
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- `Assert::notContains($needle, array $haystack)` - Reports an error if $needle is an element of $haystack.
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- `Assert::notContains($needle, string $haystack)` - Reports an error if $needle is a substring of $haystack.
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- `Assert::true($value)` - Reports an error if $value is not true.
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- `Assert::false($value)` - Reports an error if $value is not false.
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- `Assert::truthy($value)` - Reports an error if $value is not truthy.
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- `Assert::falsey($value)` - Reports an error if $value is not falsey.
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- `Assert::null($value)` - Reports an error if $value is not null.
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- `Assert::nan($value)` - Reports an error if $value is not NAN.
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- `Assert::type($type, $value)` - Reports an error if the variable $value is not of PHP or class type $type.
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- `Assert::exception($closure, $class, $message = null, $code = null)` - Checks if the function throws exception.
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- `Assert::error($closure, $level, $message = null)` - Checks if the function $closure throws PHP warning/notice/error.
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- `Assert::noError($closure)` - Checks that the function $closure does not throw PHP warning/notice/error or exception.
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- `Assert::match($pattern, $value)` - Compares result using regular expression or mask.
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- `Assert::matchFile($file, $value)` - Compares result using regular expression or mask sorted in file.
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- `Assert::count($count, $value)` - Reports an error if number of items in $value is not $count.
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- `Assert::with($objectOrClass, $closure)` - Executes function that can access private and protected members of given object via $this.
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Testing exceptions:
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```php
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Assert::exception(function () {
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$h = new Greeting;
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$h->say(null);
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}, InvalidArgumentException::class, 'Invalid name.');
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```
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Testing PHP errors, warnings or notices:
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```php
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Assert::error(function () {
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$h = new Greeting;
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echo $h->abc;
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}, E_NOTICE, 'Undefined property: Greeting::$abc');
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```
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Testing private access methods:
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```php
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$h = new Greeting;
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Assert::with($h, function () {
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// normalize() is internal private method.
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Assert::same('Hello David', $this->normalize('Hello david')); // $this is Greeting
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});
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```
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<!---->
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Tips and features
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-----------------
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Running unit tests manually is annoying, so let Nette Tester to watch your folder
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with code and automatically re-run tests whenever code is changed:
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```
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tester -w /my/source/codes
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```
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Running tests in parallel is very much faster and Nette Tester uses 8 threads as default.
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If you wish to run the tests in series use:
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```
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tester -j 1
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```
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How do you find code that is not yet tested? Use Code-Coverage Analysis. This feature
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requires you have installed [Xdebug](https://xdebug.org/) or [PCOV](https://github.com/krakjoe/pcov)
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extension, or you are using PHPDBG SAPI. This will generate nice HTML report in `coverage.html`.
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```
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tester . -c php.ini --coverage coverage.html --coverage-src /my/source/codes
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```
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We can load Nette Tester using Composer's autoloader. In this case
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it is important to setup Nette Tester environment:
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```php
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require 'vendor/autoload.php';
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Tester\Environment::setup();
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```
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We can also test HTML pages. Let the [template engine](https://latte.nette.org) generate
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HTML code or download existing page to `$html` variable. We will check whether
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the page contains form fields for username and password. The syntax is the
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same as the CSS selectors:
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```php
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$dom = Tester\DomQuery::fromHtml($html);
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Assert::true($dom->has('input[name="username"]'));
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Assert::true($dom->has('input[name="password"]'));
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```
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For more inspiration see how [Nette Tester tests itself](https://github.com/nette/tester/tree/master/tests).
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<!---->
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Running tests
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-------------
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The command-line test runner can be invoked through the `tester` command (or `php tester.php`). Take a look
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at the command-line options:
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```
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> tester
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Usage:
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tester [options] [<test file> | <directory>]...
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Options:
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-p <path> Specify PHP interpreter to run (default: php).
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-c <path> Look for php.ini file (or look in directory) <path>.
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-C Use system-wide php.ini.
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-l | --log <path> Write log to file <path>.
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-d <key=value>... Define INI entry 'key' with value 'val'.
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-s Show information about skipped tests.
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--stop-on-fail Stop execution upon the first failure.
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-j <num> Run <num> jobs in parallel (default: 8).
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-o <console|console-lines|tap|junit|none>
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Specify output format.
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-w | --watch <path> Watch directory.
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-i | --info Show tests environment info and exit.
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--setup <path> Script for runner setup.
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--temp <path> Path to temporary directory. Default by sys_get_temp_dir().
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--colors [1|0] Enable or disable colors.
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--coverage <path> Generate code coverage report to file.
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--coverage-src <path> Path to source code.
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-h | --help This help.
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```
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