Editing: IsNullTest.php
<?php namespace Hamcrest\Core; class IsNullTest extends \Hamcrest\AbstractMatcherTest { protected function createMatcher() { return \Hamcrest\Core\IsNull::nullValue(); } public function testEvaluatesToTrueIfArgumentIsNull() { assertThat(null, nullValue()); assertThat(self::ANY_NON_NULL_ARGUMENT, not(nullValue())); assertThat(self::ANY_NON_NULL_ARGUMENT, notNullValue()); assertThat(null, not(notNullValue())); } }
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