feat: add support for toHaveMethod and toHaveMethods

tests/Features/Expect/toHaveMethod.php

@@ -0,0 +1,28 @@
+<?php
+
+use PHPUnit\Framework\ExpectationFailedException;
+
+$object = new class
+{
+    public function foo(): void
+    {
+    }
+};
+
+test('pass', function () use ($object) {
+    expect($object)->toHaveMethod('foo')
+        ->and($object)->toHaveMethod('foo')
+        ->and($object)->not->toHaveMethod('fooNull');
+});
+
+test('failures', function () use ($object) {
+    expect($object)->toHaveMethod('bar');
+})->throws(ExpectationFailedException::class);
+
+test('failures with message', function () use ($object) {
+    expect($object)->toHaveMethod(name: 'bar', message: 'oh no!');
+})->throws(ExpectationFailedException::class, 'oh no!');
+
+test('not failures', function () use ($object) {
+    expect($object)->not->toHaveMethod('foo');
+})->throws(ExpectationFailedException::class);