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PhabricatorAphrontViewTestCase.php
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			<?php

			final class PhabricatorAphrontViewTestCase extends PhabricatorTestCase {

			public function testHasChildren() {
			$view = new AphrontNullView();
			$this->assertFalse($view->hasChildren());

			$values = array(
			null,
			'',
			array(),
			array(null, ''),
			);

			foreach ($values as $value) {
			$view->appendChild($value);
			$this->assertFalse($view->hasChildren());
			}

			$view->appendChild('!');
			$this->assertTrue($view->hasChildren());
			}

			}