Feat: Add PhpUnitMethodCasingFixer

ecs.php

@@ -133,6 +133,7 @@
 use PhpCsFixer\Fixer\PhpUnit\PhpUnitDedicateAssertInternalTypeFixer;
 use PhpCsFixer\Fixer\PhpUnit\PhpUnitExpectationFixer;
 use PhpCsFixer\Fixer\PhpUnit\PhpUnitFqcnAnnotationFixer;
+use PhpCsFixer\Fixer\PhpUnit\PhpUnitMethodCasingFixer;
 use PhpCsFixer\Fixer\PhpUnit\PhpUnitMockFixer;
 use PhpCsFixer\Fixer\PhpUnit\PhpUnitMockShortWillReturnFixer;
 use PhpCsFixer\Fixer\PhpUnit\PhpUnitNoExpectationAnnotationFixer;
@@ -535,6 +536,8 @@
     ->withConfiguredRule(PhpdocOrderFixer::class, ['order' => ['param', 'return', 'throws']])
     // Order phpdoc tags by value.
     ->withConfiguredRule(PhpdocOrderByValueFixer::class, ['annotations' => ['covers', 'group', 'throws']])
+    // Enforce camel case for PHPUnit test methods.
+    ->withConfiguredRule(PhpUnitMethodCasingFixer::class, ['case' => 'camel_case'])
     // Calls to `PHPUnit\Framework\TestCase` static methods must all be of the same type (`$this->...`)
     ->withConfiguredRule(PhpUnitTestCaseStaticMethodCallsFixer::class, ['call_type' => 'this'])
     // An empty line feed must precede any configured statement

tests/Integration/Fixtures/PhpUnit.correct.php.inc

@@ -31,4 +31,9 @@ class PhpUnit extends TestCase
         // PhpUnitTestCaseStaticMethodCallsFixer
         $this->assertSame(1, 2);
     }
+
+    public function testMethodName(): void // PhpUnitMethodCasingFixer
+    {
+        $this->assertTrue(true);
+    }
 }

tests/Integration/Fixtures/PhpUnit.wrong.php.inc

@@ -31,4 +31,9 @@ class PhpUnit extends TestCase
         // PhpUnitTestCaseStaticMethodCallsFixer
         static::assertSame(1, 2);
     }
+
+    public function test_method_name(): void // PhpUnitMethodCasingFixer
+    {
+        $this->assertTrue(true);
+    }
 }