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Edit File : LongestCommonSubsequenceTest.php \| Size : 5.63 KB
<?php declare(strict_types=1); /* * This file is part of sebastian/diff. * * (c) Sebastian Bergmann <sebastian@phpunit.de> * * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. / namespace SebastianBergmann\Diff; use PHPUnit\Framework\TestCase; /* * @coversNothing / abstract class LongestCommonSubsequenceTest extends TestCase { /* * @var LongestCommonSubsequenceCalculator / private $implementation; /* * @var string / private $memoryLimit; /* * @var int[] / private $stress_sizes = [1, 2, 3, 100, 500, 1000, 2000]; protected function setUp(): void { $this->memoryLimit = \ini_get('memory_limit'); \ini_set('memory_limit', '256M'); $this->implementation = $this->createImplementation(); } protected function tearDown(): void { \ini_set('memory_limit', $this->memoryLimit); } public function testBothEmpty(): void { $from = []; $to = []; $common = $this->implementation->calculate($from, $to); $this->assertSame([], $common); } public function testIsStrictComparison(): void { $from = [ false, 0, 0.0, '', null, [], true, 1, 1.0, 'foo', ['foo', 'bar'], ['foo' => 'bar'], ]; $to = $from; $common = $this->implementation->calculate($from, $to); $this->assertSame($from, $common); $to = [ false, false, false, false, false, false, true, true, true, true, true, true, ]; $expected = [ false, true, ]; $common = $this->implementation->calculate($from, $to); $this->assertSame($expected, $common); } public function testEqualSequences(): void { foreach ($this->stress_sizes as $size) { $range = \range(1, $size); $from = $range; $to = $range; $common = $this->implementation->calculate($from, $to); $this->assertSame($range, $common); } } public function testDistinctSequences(): void { $from = ['A']; $to = ['B']; $common = $this->implementation->calculate($from, $to); $this->assertSame([], $common); $from = ['A', 'B', 'C']; $to = ['D', 'E', 'F']; $common = $this->implementation->calculate($from, $to); $this->assertSame([], $common); foreach ($this->stress_sizes as $size) { $from = \range(1, $size); $to = \range($size + 1, $size 2); $common = $this->implementation->calculate($from, $to); $this->assertSame([], $common); } } public function testCommonSubsequence(): void { $from = ['A', 'C', 'E', 'F', 'G']; $to = ['A', 'B', 'D', 'E', 'H']; $expected = ['A', 'E']; $common = $this->implementation->calculate($from, $to); $this->assertSame($expected, $common); $from = ['A', 'C', 'E', 'F', 'G']; $to = ['B', 'C', 'D', 'E', 'F', 'H']; $expected = ['C', 'E', 'F']; $common = $this->implementation->calculate($from, $to); $this->assertSame($expected, $common); foreach ($this->stress_sizes as $size) { $from = $size < 2 ? [1] : \range(1, $size + 1, 2); $to = $size < 3 ? [1] : \range(1, $size + 1, 3); $expected = $size < 6 ? [1] : \range(1, $size + 1, 6); $common = $this->implementation->calculate($from, $to); $this->assertSame($expected, $common); } } public function testSingleElementSubsequenceAtStart(): void { foreach ($this->stress_sizes as $size) { $from = \range(1, $size); $to = \array_slice($from, 0, 1); $common = $this->implementation->calculate($from, $to); $this->assertSame($to, $common); } } public function testSingleElementSubsequenceAtMiddle(): void { foreach ($this->stress_sizes as $size) { $from = \range(1, $size); $to = \array_slice($from, (int) ($size / 2), 1); $common = $this->implementation->calculate($from, $to); $this->assertSame($to, $common); } } public function testSingleElementSubsequenceAtEnd(): void { foreach ($this->stress_sizes as $size) { $from = \range(1, $size); $to = \array_slice($from, $size - 1, 1); $common = $this->implementation->calculate($from, $to); $this->assertSame($to, $common); } } public function testReversedSequences(): void { $from = ['A', 'B']; $to = ['B', 'A']; $expected = ['A']; $common = $this->implementation->calculate($from, $to); $this->assertSame($expected, $common); foreach ($this->stress_sizes as $size) { $from = \range(1, $size); $to = \array_reverse($from); $common = $this->implementation->calculate($from, $to); $this->assertSame([1], $common); } } public function testStrictTypeCalculate(): void { $diff = $this->implementation->calculate(['5'], ['05']); $this->assertIsArray($diff); $this->assertCount(0, $diff); } /** * @return LongestCommonSubsequenceCalculator */ abstract protected function createImplementation(): LongestCommonSubsequenceCalculator; } Back

Edit File : LongestCommonSubsequenceTest.php | Size : 5.63 KB

<?php declare(strict_types=1);
/*
 * This file is part of sebastian/diff.
 *
 * (c) Sebastian Bergmann <sebastian@phpunit.de>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace SebastianBergmann\Diff;

use PHPUnit\Framework\TestCase;

/**
 * @coversNothing
 */
abstract class LongestCommonSubsequenceTest extends TestCase
{
    /**
     * @var LongestCommonSubsequenceCalculator
     */
    private $implementation;

/**
     * @var string
     */
    private $memoryLimit;

/**
     * @var int[]
     */
    private $stress_sizes = [1, 2, 3, 100, 500, 1000, 2000];

protected function setUp(): void
    {
        $this->memoryLimit = \ini_get('memory_limit');
        \ini_set('memory_limit', '256M');

$this->implementation = $this->createImplementation();
    }

protected function tearDown(): void
    {
        \ini_set('memory_limit', $this->memoryLimit);
    }

public function testBothEmpty(): void
    {
        $from   = [];
        $to     = [];
        $common = $this->implementation->calculate($from, $to);

$this->assertSame([], $common);
    }

public function testIsStrictComparison(): void
    {
        $from = [
            false, 0, 0.0, '', null, [],
            true, 1, 1.0, 'foo', ['foo', 'bar'], ['foo' => 'bar'],
        ];
        $to     = $from;
        $common = $this->implementation->calculate($from, $to);

$this->assertSame($from, $common);

$to = [
            false, false, false, false, false, false,
            true, true, true, true, true, true,
        ];

$expected = [
            false,
            true,
        ];

$common = $this->implementation->calculate($from, $to);

$this->assertSame($expected, $common);
    }

public function testEqualSequences(): void
    {
        foreach ($this->stress_sizes as $size) {
            $range  = \range(1, $size);
            $from   = $range;
            $to     = $range;
            $common = $this->implementation->calculate($from, $to);

$this->assertSame($range, $common);
        }
    }

public function testDistinctSequences(): void
    {
        $from   = ['A'];
        $to     = ['B'];
        $common = $this->implementation->calculate($from, $to);
        $this->assertSame([], $common);

$from   = ['A', 'B', 'C'];
        $to     = ['D', 'E', 'F'];
        $common = $this->implementation->calculate($from, $to);
        $this->assertSame([], $common);

foreach ($this->stress_sizes as $size) {
            $from   = \range(1, $size);
            $to     = \range($size + 1, $size * 2);
            $common = $this->implementation->calculate($from, $to);
            $this->assertSame([], $common);
        }
    }

public function testCommonSubsequence(): void
    {
        $from     = ['A',      'C',      'E', 'F', 'G'];
        $to       = ['A', 'B',      'D', 'E',           'H'];
        $expected = ['A',                'E'];
        $common   = $this->implementation->calculate($from, $to);
        $this->assertSame($expected, $common);

$from     = ['A',      'C',      'E', 'F', 'G'];
        $to       = ['B', 'C', 'D', 'E', 'F',      'H'];
        $expected = ['C',                'E', 'F'];
        $common   = $this->implementation->calculate($from, $to);
        $this->assertSame($expected, $common);

foreach ($this->stress_sizes as $size) {
            $from     = $size < 2 ? [1] : \range(1, $size + 1, 2);
            $to       = $size < 3 ? [1] : \range(1, $size + 1, 3);
            $expected = $size < 6 ? [1] : \range(1, $size + 1, 6);
            $common   = $this->implementation->calculate($from, $to);

$this->assertSame($expected, $common);
        }
    }

public function testSingleElementSubsequenceAtStart(): void
    {
        foreach ($this->stress_sizes as $size) {
            $from   = \range(1, $size);
            $to     = \array_slice($from, 0, 1);
            $common = $this->implementation->calculate($from, $to);

$this->assertSame($to, $common);
        }
    }

public function testSingleElementSubsequenceAtMiddle(): void
    {
        foreach ($this->stress_sizes as $size) {
            $from   = \range(1, $size);
            $to     = \array_slice($from, (int) ($size / 2), 1);
            $common = $this->implementation->calculate($from, $to);

$this->assertSame($to, $common);
        }
    }

public function testSingleElementSubsequenceAtEnd(): void
    {
        foreach ($this->stress_sizes as $size) {
            $from   = \range(1, $size);
            $to     = \array_slice($from, $size - 1, 1);
            $common = $this->implementation->calculate($from, $to);

$this->assertSame($to, $common);
        }
    }

public function testReversedSequences(): void
    {
        $from     = ['A', 'B'];
        $to       = ['B', 'A'];
        $expected = ['A'];
        $common   = $this->implementation->calculate($from, $to);
        $this->assertSame($expected, $common);

foreach ($this->stress_sizes as $size) {
            $from   = \range(1, $size);
            $to     = \array_reverse($from);
            $common = $this->implementation->calculate($from, $to);

$this->assertSame([1], $common);
        }
    }

public function testStrictTypeCalculate(): void
    {
        $diff = $this->implementation->calculate(['5'], ['05']);

$this->assertIsArray($diff);
        $this->assertCount(0, $diff);
    }

/**
     * @return LongestCommonSubsequenceCalculator
     */
    abstract protected function createImplementation(): LongestCommonSubsequenceCalculator;
}

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