MapCacheLRUTest.php

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<?php
class MapCacheLRUTest extends PHPUnit\Framework\TestCase {
 
    use MediaWikiCoversValidator;
 
    function testArrayConversion() {
        $raw = [ 'd' => 4, 'c' => 3, 'b' => 2, 'a' => 1 ];
        $cache = MapCacheLRU::newFromArray( $raw, 3 );
 
        $this->assertSame( true, $cache->has( 'a' ) );
        $this->assertSame( true, $cache->has( 'b' ) );
        $this->assertSame( true, $cache->has( 'c' ) );
        $this->assertSame( 1, $cache->get( 'a' ) );
        $this->assertSame( 2, $cache->get( 'b' ) );
        $this->assertSame( 3, $cache->get( 'c' ) );
 
        $this->assertSame(
            [ 'a' => 1, 'b' => 2, 'c' => 3 ],
            $cache->toArray()
        );
        $this->assertSame(
            [ 'a', 'b', 'c' ],
            $cache->getAllKeys()
        );
 
        $cache->clear( 'a' );
        $this->assertSame(
            [ 'b' => 2, 'c' => 3 ],
            $cache->toArray()
        );
 
        $cache->clear();
        $this->assertSame(
            [],
            $cache->toArray()
        );
    }
 
    function testLRU() {
        $raw = [ 'a' => 1, 'b' => 2, 'c' => 3 ];
        $cache = MapCacheLRU::newFromArray( $raw, 3 );
 
        $this->assertSame( true, $cache->has( 'c' ) );
        $this->assertSame(
            [ 'a' => 1, 'b' => 2, 'c' => 3 ],
            $cache->toArray()
        );
 
        $this->assertSame( 3, $cache->get( 'c' ) );
        $this->assertSame(
            [ 'a' => 1, 'b' => 2, 'c' => 3 ],
            $cache->toArray()
        );
 
        $this->assertSame( 1, $cache->get( 'a' ) );
        $this->assertSame(
            [ 'b' => 2, 'c' => 3, 'a' => 1 ],
            $cache->toArray()
        );
 
        $cache->set( 'a', 1 );
        $this->assertSame(
            [ 'b' => 2, 'c' => 3, 'a' => 1 ],
            $cache->toArray()
        );
 
        $cache->set( 'b', 22 );
        $this->assertSame(
            [ 'c' => 3, 'a' => 1, 'b' => 22 ],
            $cache->toArray()
        );
 
        $cache->set( 'd', 4 );
        $this->assertSame(
            [ 'a' => 1, 'b' => 22, 'd' => 4 ],
            $cache->toArray()
        );
 
        $cache->set( 'e', 5, 0.33 );
        $this->assertSame(
            [ 'e' => 5, 'b' => 22, 'd' => 4 ],
            $cache->toArray()
        );
 
        $cache->set( 'f', 6, 0.66 );
        $this->assertSame(
            [ 'b' => 22, 'f' => 6, 'd' => 4 ],
            $cache->toArray()
        );
 
        $cache->set( 'g', 7, 0.90 );
        $this->assertSame(
            [ 'f' => 6, 'g' => 7, 'd' => 4 ],
            $cache->toArray()
        );
 
        $cache->set( 'g', 7, 1.0 );
        $this->assertSame(
            [ 'f' => 6, 'd' => 4, 'g' => 7 ],
            $cache->toArray()
        );
    }
}