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<?php declare(strict_types=1); |
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namespace Tests; |
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use InvalidArgumentException; |
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use PHPUnit\Framework\TestCase; |
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use Twistor\LruCache; |
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class LruCacheTest extends TestCase |
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{ |
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/** |
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* @var \Twistor\LruCache |
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* |
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* @psalm-var \Twistor\LruCache<int, string> |
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*/ |
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private $cache; |
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public function setUp(): void |
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{ |
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/** @var \Twistor\LruCache<int, string> cache */ |
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$this->cache = new LruCache(2); |
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$this->cache->put(1, 'first'); |
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$this->cache->put(2, 'second'); |
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} |
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public function testConstructorValidation(): void |
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{ |
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$this->assertInstanceOf(LruCache::class, new LruCache(1)); |
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$this->expectException(InvalidArgumentException::class); |
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new LruCache(0); |
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} |
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public function testHas(): void |
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{ |
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$this->assertTrue($this->cache->has(1)); |
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$this->assertTrue($this->cache->has(2)); |
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$this->assertFalse($this->cache->has(3)); |
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} |
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public function testGet(): void |
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{ |
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$this->assertSame('first', $this->cache->get(1)); |
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$this->assertSame('second', $this->cache->get(2)); |
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$this->assertNull($this->cache->get(3)); |
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} |
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public function testOldKeysRemoved(): void |
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{ |
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$this->cache->put(3, 'third'); |
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$this->assertFalse($this->cache->has(1)); |
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$this->assertTrue($this->cache->has(2)); |
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$this->assertTrue($this->cache->has(3)); |
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$this->assertNull($this->cache->get(1)); |
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$this->assertSame('second', $this->cache->get(2)); |
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$this->assertSame('third', $this->cache->get(3)); |
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} |
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public function testGettingExistingTouchesKey(): void |
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{ |
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// This makes 1 a more recently used key. |
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$this->assertSame('first', $this->cache->get(1)); |
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$this->cache->put(3, 'third'); |
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$this->assertSame('first', $this->cache->get(1)); |
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$this->assertNull($this->cache->get(2)); |
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$this->assertSame('third', $this->cache->get(3)); |
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} |
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public function testSettingExistingTouchesKey(): void |
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{ |
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// This makes 1 a more recently used key. |
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$this->cache->put(1, 'first updated'); |
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// When we set third, second should be removed. |
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$this->cache->put(3, 'third'); |
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$this->assertSame('first updated', $this->cache->get(1)); |
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$this->assertNull($this->cache->get(2)); |
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$this->assertSame('third', $this->cache->get(3)); |
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} |
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public function testGetWith(): void |
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{ |
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$throws = function(int $key): string { |
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throw new InvalidArgumentException(); |
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}; |
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$this->assertSame('first', $this->cache->getWith(1, $throws)); |
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$this->assertSame('second', $this->cache->getWith(2, $throws)); |
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$returnsThree = function(int $key): string { |
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return 'third'; |
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}; |
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$this->assertSame('third', $this->cache->getWith(3, $returnsThree)); |
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$this->assertTrue($this->cache->has(3)); |
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$this->assertSame('third', $this->cache->getWith(3, $throws)); |
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} |
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} |
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twistor /
lru-cache
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This check looks for parameters that have been defined for a function or method, but which are not used in the method body.