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DifferentialChangesetParserTestCase.php
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			<?php

			final class DifferentialChangesetParserTestCase extends PhabricatorTestCase {

			public function testDiffChangesets() {
			$hunk = new DifferentialHunk();
			$hunk->setChanges("+a\n b\n-c\n");
			$hunk->setNewOffset(1);
			$hunk->setNewLen(2);
			$left = new DifferentialChangeset();
			$left->attachHunks(array($hunk));

			$tests = array(
			"+a\n b\n-c\n" => array(array(), array()),
			"+a\n x\n-c\n" => array(array(), array()),
			"+aa\n b\n-c\n" => array(array(1), array(11)),
			" b\n-c\n" => array(array(1), array()),
			"+a\n b\n c\n" => array(array(), array(13)),
			"+a\n x\n c\n" => array(array(), array(13)),
			);

			foreach ($tests as $changes => $expected) {
			$hunk = new DifferentialHunk();
			$hunk->setChanges($changes);
			$hunk->setNewOffset(11);
			$hunk->setNewLen(3);
			$right = new DifferentialChangeset();
			$right->attachHunks(array($hunk));

			$parser = new DifferentialChangesetParser();
			$parser->setOriginals($left, $right);
			$this->assertEqual($expected, $parser->diffOriginals(), $changes);
			}
			}

			}