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<?php |
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declare(strict_types=1); |
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/** |
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* This file is part of Esi\ConsistentHash. |
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* |
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* (c) Eric Sizemore <[email protected]> |
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* (c) Paul Annesley <[email protected]> |
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* |
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* This source file is subject to the MIT license. For the full copyright and |
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* license information, please view the LICENSE file that was distributed with |
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* this source code. |
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*/ |
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namespace Esi\ConsistentHash\Tests\Hasher; |
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use Esi\ConsistentHash\ConsistentHash; |
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use Esi\ConsistentHash\Hasher\Crc32Hasher; |
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use Esi\ConsistentHash\Hasher\Md5Hasher; |
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use Esi\ConsistentHash\Hasher\Xxh32Hasher; |
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use PHPUnit\Framework\Attributes\CoversClass; |
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use PHPUnit\Framework\Attributes\UsesClass; |
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use PHPUnit\Framework\TestCase; |
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/** |
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* @internal |
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*/ |
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#[CoversClass(Crc32Hasher::class)] |
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#[CoversClass(Md5Hasher::class)] |
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#[CoversClass(Xxh32Hasher::class)] |
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#[UsesClass(ConsistentHash::class)] |
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class HasherTest extends TestCase |
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{ |
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public function testCrc32Hash(): void |
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{ |
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$hasher = new Crc32Hasher(); |
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$result1 = $hasher->hash('test'); |
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$result2 = $hasher->hash('test'); |
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$result3 = $hasher->hash('different'); |
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self::assertEquals($result1, $result2); |
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self::assertNotEquals($result1, $result3); // fragile but worthwhile |
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} |
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public function testCrc32HashSpaceLookupsAreValidTargets(): void |
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{ |
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$targets = []; |
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foreach (range(1, 10) as $i) { |
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$targets[] = \sprintf('target%s', $i); |
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} |
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$hashSpace = new ConsistentHash(new Crc32Hasher()); |
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$hashSpace->addTargets($targets); |
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foreach (range(1, 10) as $i) { |
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self::assertTrue( |
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\in_array($hashSpace->lookup(\sprintf('r%s', $i)), $targets, true), |
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'target must be in list of targets', |
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); |
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} |
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} |
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public function testMd5Hash(): void |
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{ |
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$hasher = new Md5Hasher(); |
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$result1 = $hasher->hash('test'); |
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$result2 = $hasher->hash('test'); |
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$result3 = $hasher->hash('different'); |
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self::assertEquals($result1, $result2); |
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self::assertNotEquals($result1, $result3); // fragile but worthwhile |
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} |
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public function testMd5HashSpaceLookupsAreValidTargets(): void |
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{ |
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$targets = []; |
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foreach (range(1, 10) as $i) { |
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$targets[] = \sprintf('target%s', $i); |
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} |
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$hashSpace = new ConsistentHash(new Md5Hasher()); |
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$hashSpace->addTargets($targets); |
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foreach (range(1, 10) as $i) { |
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self::assertTrue( |
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\in_array($hashSpace->lookup(\sprintf('r%s', $i)), $targets, true), |
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'target must be in list of targets', |
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); |
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} |
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} |
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public function testXxh32Hash(): void |
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{ |
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$hasher = new Xxh32Hasher(); |
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$result1 = $hasher->hash('test'); |
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$result2 = $hasher->hash('test'); |
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$result3 = $hasher->hash('different'); |
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self::assertEquals($result1, $result2); |
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self::assertNotEquals($result1, $result3); // fragile but worthwhile |
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} |
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public function testXxh32HashSpaceLookupsAreValidTargets(): void |
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{ |
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$targets = []; |
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foreach (range(1, 10) as $i) { |
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$targets[] = \sprintf('target%s', $i); |
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} |
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$hashSpace = new ConsistentHash(new Xxh32Hasher()); |
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$hashSpace->addTargets($targets); |
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foreach (range(1, 10) as $i) { |
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self::assertTrue( |
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\in_array($hashSpace->lookup(\sprintf('r%s', $i)), $targets, true), |
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'target must be in list of targets', |
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); |
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} |
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} |
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} |
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ericsizemore /
consistent-hash
