Use snake_case for PHPUnit method names

resources/presets/laravel.php

@@ -176,6 +176,7 @@
     'phpdoc_trim' => true,
     'phpdoc_types' => true,
     'phpdoc_var_without_name' => true,
+    'php_unit_method_casing' => ['case' => 'snake_case'],
     'psr_autoloading' => false,
     'return_type_declaration' => ['space_before' => 'none'],
     'self_accessor' => false,

tests/Feature/Fixers/PhpUnitCasingTest.php

@@ -0,0 +1,18 @@
+<?php
+
+use function Illuminate\Filesystem\join_paths;
+
+it('fixes the code', function () {
+    [$statusCode, $output] = run('default', [
+        'path' => base_path('tests/Fixtures/fixers/phpunit_method_casing.php'),
+        '--preset' => 'laravel',
+    ]);
+
+    expect($statusCode)->toBe(1)
+        ->and($output)
+        ->toContain('  ⨯ '.join_paths('tests', 'Fixtures', 'fixers', 'phpunit_method_casing.php'))
+        ->toContain(<<<'DIFF'
+              -    public function testItConvertsToSnakeCase()
+              +    public function test_it_converts_to_snake_case()
+            DIFF);
+});

tests/Fixtures/fixers/phpunit_method_casing.php

@@ -0,0 +1,13 @@
+<?php
+
+namespace Tests\Feature;
+
+use Tests\TestCase;
+
+class PhpUnitCasingTest extends TestCase
+{
+    public function testItConvertsToSnakeCase()
+    {
+        $this->assertTrue(true);
+    }
+}