improve DecorateWillReturnMapWithExpectsMockRector edge cases

Author: TomasVotruba

rules-tests/CodeQuality/Rector/Expression/DecorateWillReturnMapWithExpectsMockRector/Fixture/skip_already_defined.php.inc

@@ -0,0 +1,16 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Rector\PHPUnit\Tests\CodeQuality\Rector\Expression\DecorateWillReturnMapWithExpectsMockRector\Fixture;
+
+final class SkipAlreadyDefined extends \PHPUnit\Framework\TestCase
+{
+    public function test()
+    {
+        $someMock = $this->createMock(\stdClass::class);
+        $someMock
+            ->expects($this->exactly(2))
+            ->method('some')->willReturnMap([1, 2]);
+    }
+}