ExplicitMockExpectsCallRector

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Add explicit expects() to method() mock calls, to make expectations count explicit

 use PHPUnit\Framework\TestCase;

 final class SomeClass extends TestCase
 {
     public function testMe()
     {
         $someMock = $this->createMock(\stdClass::class);
-        $someMock->method('some');
+        $someMock->expects($this->atLeastOnce())->method('some');
     }
 }

Configure your rector.php:

<?php

use Rector\Config\RectorConfig;
use Rector\PHPUnit\PHPUnit120\Rector\MethodCall\ExplicitMockExpectsCallRector;

return RectorConfig::configure()
    ->withRules([
        ExplicitMockExpectsCallRector::class,
    ]);