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<?php |
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/** |
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* (c) Steve Nebes <[email protected]> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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declare(strict_types=1); |
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namespace SN\RangeDifferencer; |
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use PHPUnit\Framework\TestCase; |
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class DiffTest extends TestCase |
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{ |
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public function testLineAdditions(): void |
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{ |
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$s1 = 'abc' . PHP_EOL . 'def' . PHP_EOL . 'xyz'; |
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$s2 = 'abc' . PHP_EOL . 'def' . PHP_EOL . '123' . PHP_EOL . 'xyz'; |
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$l1 = TextLineLCS::getTextLines($s1); |
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$l2 = TextLineLCS::getTextLines($s2); |
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$lcs = new TextLineLCS($l1, $l2); |
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$lcs->longestCommonSubsequence(); |
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/** @var TextLine[][] $result */ |
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$result = $lcs->getResult(); |
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$this->assertSame(0, $result[0][0]->getLineNumber()); |
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$this->assertSame(0, $result[1][0]->getLineNumber()); |
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$this->assertSame(1, $result[0][1]->getLineNumber()); |
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$this->assertSame(1, $result[1][1]->getLineNumber()); |
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$this->assertSame(2, $result[0][2]->getLineNumber()); |
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$this->assertSame(3, $result[1][2]->getLineNumber()); |
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} |
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public function testLineDeletion(): void |
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{ |
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$s1 = 'abc' . PHP_EOL . 'def' . PHP_EOL . '123' . PHP_EOL . 'xyz'; |
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$s2 = 'abc' . PHP_EOL . 'def' . PHP_EOL . 'xyz'; |
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$l1 = TextLineLCS::getTextLines($s1); |
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$l2 = TextLineLCS::getTextLines($s2); |
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$lcs = new TextLineLCS($l1, $l2); |
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$lcs->longestCommonSubsequence(); |
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/** @var TextLine[][] $result */ |
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$result = $lcs->getResult(); |
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$this->assertTrue(\count($result[0]) === \count($result[1])); |
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for ($i = 0; $i < \count($result[0]); $i++) { |
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$this->assertTrue($result[0][$i]->isSameText($result[1][$i])); |
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} |
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$this->assertSame(0, $result[0][0]->getLineNumber()); |
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$this->assertSame(1, $result[0][1]->getLineNumber()); |
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$this->assertSame(3, $result[0][2]->getLineNumber()); |
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$this->assertSame(0, $result[1][0]->getLineNumber()); |
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$this->assertSame(1, $result[1][1]->getLineNumber()); |
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$this->assertSame(2, $result[1][2]->getLineNumber()); |
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} |
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public function testLineAppendEnd(): void |
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{ |
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$s1 = 'abc' . PHP_EOL . 'def'; |
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$s2 = 'abc' . PHP_EOL . 'def' . PHP_EOL . '123'; |
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$l1 = TextLineLCS::getTextLines($s1); |
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$l2 = TextLineLCS::getTextLines($s2); |
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$lcs = new TextLineLCS($l1, $l2); |
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$lcs->longestCommonSubsequence(); |
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/** @var TextLine[][] $result */ |
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$result = $lcs->getResult(); |
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$this->assertSame(2, \count($result[0])); |
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$this->assertSame(2, \count($result[1])); |
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for ($i = 0; $i < \count($result[0]); $i++) { |
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$this->assertTrue($result[0][$i]->isSameText($result[1][$i])); |
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} |
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$this->assertSame(0, $result[0][0]->getLineNumber()); |
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$this->assertSame(0, $result[1][0]->getLineNumber()); |
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$this->assertSame(1, $result[0][1]->getLineNumber()); |
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$this->assertSame(1, $result[1][1]->getLineNumber()); |
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} |
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public function testLineDeleteEnd(): void |
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{ |
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$s1 = 'abc' . PHP_EOL . 'def' . PHP_EOL . '123'; |
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$s2 = 'abc' . PHP_EOL . 'def'; |
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$l1 = TextLineLCS::getTextLines($s1); |
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$l2 = TextLineLCS::getTextLines($s2); |
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$lcs = new TextLineLCS($l1, $l2); |
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$lcs->longestCommonSubsequence(); |
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/** @var TextLine[][] $result */ |
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$result = $lcs->getResult(); |
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$this->assertSame(2, \count($result[0])); |
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$this->assertSame(2, \count($result[1])); |
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for ($i = 0; $i < \count($result[0]); $i++) { |
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$this->assertTrue($result[0][$i]->isSameText($result[1][$i])); |
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} |
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$this->assertSame(0, $result[0][0]->getLineNumber()); |
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$this->assertSame(0, $result[1][0]->getLineNumber()); |
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$this->assertSame(1, $result[0][1]->getLineNumber()); |
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$this->assertSame(1, $result[1][1]->getLineNumber()); |
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} |
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public function testLineAppendStart(): void |
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{ |
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$s1 = 'abc' . PHP_EOL . 'def'; |
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$s2 = '123' . PHP_EOL . 'abc' . PHP_EOL . 'def'; |
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$l1 = TextLineLCS::getTextLines($s1); |
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$l2 = TextLineLCS::getTextLines($s2); |
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$lcs = new TextLineLCS($l1, $l2); |
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$lcs->longestCommonSubsequence(); |
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/** @var TextLine[][] $result */ |
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$result = $lcs->getResult(); |
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$this->assertSame(2, \count($result[0])); |
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$this->assertSame(2, \count($result[1])); |
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for ($i = 0; $i < \count($result[0]); $i++) { |
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$this->assertTrue($result[0][$i]->isSameText($result[1][$i])); |
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} |
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$this->assertSame(0, $result[0][0]->getLineNumber()); |
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$this->assertSame(1, $result[1][0]->getLineNumber()); |
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$this->assertSame(1, $result[0][1]->getLineNumber()); |
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$this->assertSame(2, $result[1][1]->getLineNumber()); |
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} |
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public function testLineDeleteStart(): void |
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{ |
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$s1 = '123' . PHP_EOL . 'abc' . PHP_EOL . 'def'; |
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$s2 = 'abc' . PHP_EOL . 'def'; |
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$l1 = TextLineLCS::getTextLines($s1); |
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$l2 = TextLineLCS::getTextLines($s2); |
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$lcs = new TextLineLCS($l1, $l2); |
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$lcs->longestCommonSubsequence(); |
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/** @var TextLine[][] $result */ |
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$result = $lcs->getResult(); |
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$this->assertSame(2, \count($result[0])); |
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$this->assertSame(2, \count($result[1])); |
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for ($i = 0; $i < \count($result[0]); $i++) { |
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$this->assertTrue($result[0][$i]->isSameText($result[1][$i])); |
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} |
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$this->assertSame(1, $result[0][0]->getLineNumber()); |
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$this->assertSame(0, $result[1][0]->getLineNumber()); |
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$this->assertSame(2, $result[0][1]->getLineNumber()); |
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$this->assertSame(1, $result[1][1]->getLineNumber()); |
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} |
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} |
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If the size of the collection does not change during the iteration, it is generally a good practice to compute it beforehand, and not on each iteration: