PhutilRopeTestCase.php
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	<?php

	final class PhutilRopeTestCase extends PhutilTestCase {

	public function testRopeOperations() {
	$rope = new PhutilRope();
	$rope->append('aaa');
	$rope->append('bbb');

	$this->assertEqual(6, $rope->getByteLength());
	$this->assertEqual('aaabbb', $rope->getAsString());

	$rope->removeBytesFromHead(2);

	$this->assertEqual(4, $rope->getByteLength());
	$this->assertEqual('abbb', $rope->getAsString());

	$rope->removeBytesFromHead(4);

	$this->assertEqual(0, $rope->getByteLength());
	$this->assertEqual('', $rope->getAsString());
	}

	public function testMoreRopeOperations() {
	$rope = new PhutilRope();
	$rope->append('aaa');
	$rope->append('bbb');
	$rope->append('ccc');
	$rope->append('rrrrddddddddd');
	$rope->removeBytesFromHead(4);

	$string = $rope->getAsString();
	$this->assertEqual('bbcccrrrrddddddddd', $string);
	$this->assertEqual(strlen($string), $rope->getByteLength());

	$rope = new PhutilRope();
	$rope->append('aaa');
	$rope->append('bbb');
	$rope->removeBytesFromHead(6);

	$string = $rope->getAsString();
	$this->assertEqual('', $string);
	$this->assertEqual(0, $rope->getByteLength());


	$rope = new PhutilRope();
	$rope->append('a');
	$rope->append('b');
	$rope->append('c');
	$rope->removeBytesFromHead(1024);

	$string = $rope->getAsString();
	$this->assertEqual('', $string);
	$this->assertEqual(0, $rope->getByteLength());
	}
	}