PhutilProseDiffTestCase.php
5d8e090fe1e2production

PhutilProseDiffTestCase.php
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			<?php

			final class PhutilProseDiffTestCase extends PhutilTestCase {

			public function testProseDiffsDistance() {
			$this->assertProseParts(
			'',
			'',
			array(),
			pht('Empty'));

			$this->assertProseParts(
			"xxx\nyyy",
			"xxx\nzzz\nyyy",
			array(
			"= xxx\n",
			"+ zzz\n",
			'= yyy',
			),
			pht('Add Paragraph'));

			$this->assertProseParts(
			"xxx\nzzz\nyyy",
			"xxx\nyyy",
			array(
			"= xxx\n",
			"- zzz\n",
			'= yyy',
			),
			pht('Remove Paragraph'));


			// Without smoothing, the alogorithm identifies that "shark" and "cat"
			// both contain the letter "a" and tries to express this as a very
			// fine-grained edit which replaces "sh" with "c" and then "rk" with "t".
			// This is technically correct, but it is much easier for human viewers to
			// parse if we smooth this into a single removal and a single addition.

			$this->assertProseParts(
			'They say the shark has nine lives.',
			'They say the cat has nine lives.',
			array(
			'= They say the ',
			'- shark',
			'+ cat',
			'= has nine lives.',
			),
			pht('"Shark/cat" word edit smoothenss.'));

			$this->assertProseParts(
			'Rising quickly, she says',
			'Rising quickly, she remarks:',
			array(
			'= Rising quickly, she ',
			'- says',
			'+ remarks:',
			),
			pht('"Says/remarks" word edit smoothenss.'));

			$this->assertProseParts(
			'See screenshots',
			'Viewed video files',
			array(
			'- See screenshots',
			'+ Viewed video files',
			),
			pht('Complete paragraph rewrite.'));

			$this->assertProseParts(
			'xaaax',
			'xbbbx',
			array(
			'- xaaax',
			'+ xbbbx',
			),
			pht('Whole word rewrite with common prefix and suffix.'));

			$this->assertProseParts(
			' aaa ',
			' bbb ',
			array(
			'= ',
			'- aaa',
			'+ bbb',
			'= ',
			),
			pht('Whole word rewrite with whitespace prefix and suffix.'));

			$this->assertSummaryProseParts(
			"a\nb\nc\nd\ne\nf\ng\nh\n",
			"a\nb\nc\nd\nX\nf\ng\nh\n",
			array(
			'.',
			"= d\n",
			'- e',
			'+ X',
			"= \nf",
			'.',
			),
			pht('Summary diff with middle change.'));

			$this->assertSummaryProseParts(
			"a\nb\nc\nd\ne\nf\ng\nh\n",
			"X\nb\nc\nd\ne\nf\ng\nh\n",
			array(
			'- a',
			'+ X',
			"= \nb",
			'.',
			),
			pht('Summary diff with head change.'));

			$this->assertSummaryProseParts(
			"a\nb\nc\nd\ne\nf\ng\nh\n",
			"a\nb\nc\nd\ne\nf\ng\nX\n",
			array(
			'.',
			"= g\n",
			'- h',
			'+ X',
			"= \n",
			),
			pht('Summary diff with last change.'));

			$this->assertProseParts(
			'aaa aaa aaa aaa, bbb bbb bbb bbb.',
			"aaa aaa aaa aaa, bbb bbb bbb bbb.\n\n- ccc ccc ccc",
			array(
			'= aaa aaa aaa aaa, bbb bbb bbb bbb.',
			"+ \n\n- ccc ccc ccc",
			),
			pht('Diff with new trailing content.'));
			}

			private function assertProseParts($old, $new, array $expect_parts, $label) {
			$engine = new PhutilProseDifferenceEngine();
			$diff = $engine->getDiff($old, $new);

			$parts = $diff->getParts();

			$this->assertParts($expect_parts, $parts, $label);
			}

			private function assertSummaryProseParts(
			$old,
			$new,
			array $expect_parts,
			$label) {

			$engine = new PhutilProseDifferenceEngine();
			$diff = $engine->getDiff($old, $new);

			$parts = $diff->getSummaryParts();

			$this->assertParts($expect_parts, $parts, $label);
			}

			private function assertParts(
			array $expect,
			array $actual_parts,
			$label) {

			$actual = array();
			foreach ($actual_parts as $actual_part) {
			$type = $actual_part['type'];
			$text = $actual_part['text'];

			switch ($type) {
			case '.':
			$actual[] = $type;
			break;
			default:
			$actual[] = "{$type} {$text}";
			break;
			}
			}

			$this->assertEqual($expect, $actual, $label);
			}


			}

libphutil/src/utils/__tests__/PhutilProseDiffTestCase.php5d8e090fe1e2production

PhutilProseDiffTestCase.phpView Options

libphutil/src/utils/tests/PhutilProseDiffTestCase.php
5d8e090fe1e2production

PhutilProseDiffTestCase.php
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