fix: PhpdocToParamTypeFixerTest - support for arrow functions

[keradus]

No description provided.

[coveralls]

coverage: 94.769%. remained the same
when pulling 930319f on keradus:phpdoc_to_param-_fn
into 29d5159 on PHP-CS-Fixer:master.

[julienfalque]

Maybe we can add similar cases to no_superfluous_phpdoc_tags?

[keradus]

good idea, I park it here: #7666

[Wirone]

IMHO it should be:

Suggested change

	yield 'support for arrow function' => [
	'<?php
	Utils::stableSort(
	$elements,
	/**
	* @param int $a
	*
	* @return array
	*/
	static fn(int $a) => [$a],
	fn($a, $b) => 1,
	);',
	'<?php
	Utils::stableSort(
	$elements,
	/**
	* @param int $a
	*
	* @return array
	*/
	static fn($a) => [$a],
	fn($a, $b) => 1,
	);',
	];
	yield 'arrow function' => [
	'<?php /** @param int $a */ fn(int $a) => 1;',
	'<?php /** @param int $a */ fn($a) => 1;',
	];
	yield 'support for arrow function' => [
	'<?php
	Utils::stableSort(
	$elements,
	/**
	* @param int $a
	*/
	static fn(int $a) => [$a],
	fn($a, $b) => 1,
	);',
	'<?php
	Utils::stableSort(
	$elements,
	/**
	* @param int $a
	*/
	static fn($a) => [$a],
	fn($a, $b) => 1,
	);',
	];

• basic arrow function test case
• complex arrow function test case
• @return annotations are superfluous here, since this fixer handles only @param

But I was too late 😅.