testing

PHUIDiffGraphViewTestCase.php
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			<?php

			final class PHUIDiffGraphViewTestCase extends PhabricatorTestCase {

			public function testTailTermination() {
			$nodes = array(
			'A' => array('B'),
			'B' => array('C', 'D', 'E'),
			'E' => array(),
			'D' => array(),
			'C' => array('F', 'G'),
			'G' => array(),
			'F' => array(),
			);

			$graph = $this->newGraph($nodes);

			$picture = array(
			'^',
			'o',
			'\|\|x',
			'\|x ',
			'o ',
			'\|x ',
			'x ',
			);

			$this->assertGraph($picture, $graph, pht('Terminating Tree'));
			}

			public function testReverseTree() {
			$nodes = array(
			'A' => array('B'),
			'C' => array('B'),
			'B' => array('D'),
			'E' => array('D'),
			'F' => array('D'),
			'D' => array('G'),
			'G' => array(),
			);

			$graph = $this->newGraph($nodes);

			$picture = array(
			'^',
			'\|^',
			'o ',
			'\|^',
			'\|\|^',
			'o ',
			'x',
			);

			$this->assertGraph($picture, $graph, pht('Reverse Tree'));
			}

			public function testJoinTerminateTree() {
			$nodes = array(
			'A' => array('D'),
			'B' => array('C'),
			'C' => array('D'),
			'D' => array(),
			);

			$graph = $this->newGraph($nodes);

			$picture = array(
			'^',
			'\|^',
			'\|o',
			'x ',
			);

			$this->assertGraph($picture, $graph, pht('Reverse Tree'));
			}

			private function newGraph(array $nodes) {
			return id(new PHUIDiffGraphView())
			->setIsHead(true)
			->setIsTail(true)
			->renderRawGraph($nodes);
			}

			private function assertGraph($picture, $graph, $label) {
			list($data, $count) = $graph;
			$lines = ipull($data, 'line');

			$picture = implode("\n", $picture);
			$lines = implode("\n", $lines);

			$this->assertEqual($picture, $lines, $label);
			}

			}