[sebj54]

Since #17, isKnownExpectationMethod() only recognizes the native and @mixin methods of Pest\Expectation. A custom expectation that a project declares to PHPStan through a MethodsClassReflectionExtension (the usual way to type expect()->extend() calls) is therefore treated as a higher-order method call on the expectation value.

When that value is a class-string, the call crashes the analysis:

expect(Post::class)->toBeCustom();

Internal error: Internal error. while analysing file …
  src/Type/Pest/HigherOrderExpectationTypeExtension.php(225): PHPStan\Type\StringType->getMethod('toBeCustom', …)

hasMethod() on a class-string is not no(), so resolveMethodReturnType() calls getMethod() on a StringType, which throws something other than MissingMethodFromReflectionException.

This PR uses ClassReflection::hasMethod() instead. It covers native methods, @mixin methods and methods provided by extensions, so the existing higher-order behavior from #17 is unchanged.

The new CustomExpectationMethodCallTest registers such an extension and fails with the internal error above without the fix. composer lint, composer test:types and the whole suite pass with it.

[MrPunyapal]

Thanks