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->assertEquals( 3, $cache->getMaxSize() );
        $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()
        );
 
        $cache = MapCacheLRU::newFromArray( [ 'd' => 4, 'c' => 3, 'b' => 2, 'a' => 1 ], 4 );
        $cache->setMaxSize( 3 );
        $this->assertSame(
            [ 'c' => 3, 'b' => 2, 'a' => 1 ],
            $cache->toArray()
        );
    }
 
    function testSerialize() {
        $cache = MapCacheLRU::newFromArray( [ 'd' => 4, 'c' => 3, 'b' => 2, 'a' => 1 ], 10 );
        $string = serialize( $cache );
        $ncache = unserialize( $string );
        $this->assertSame(
            [ 'd' => 4, 'c' => 3, 'b' => 2, 'a' => 1 ],
            $ncache->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()
        );
    }
 
    public function testExpiry() {
        $raw = [ 'a' => 1, 'b' => 2, 'c' => 3 ];
        $cache = MapCacheLRU::newFromArray( $raw, 3 );
 
        $now = microtime( true );
        $cache->setMockTime( $now );
 
        $cache->set( 'd', 'xxx' );
        $this->assertTrue( $cache->has( 'd', 30 ) );
        $this->assertEquals( 'xxx', $cache->get( 'd' ) );
 
        $now += 29;
        $this->assertTrue( $cache->has( 'd', 30 ) );
        $this->assertEquals( 'xxx', $cache->get( 'd' ) );
        $this->assertEquals( 'xxx', $cache->get( 'd', 30 ) );
 
        $now += 1.5;
        $this->assertFalse( $cache->has( 'd', 30 ) );
        $this->assertEquals( 'xxx', $cache->get( 'd' ) );
        $this->assertNull( $cache->get( 'd', 30 ) );
    }
 
    public function testFields() {
        $raw = [ 'a' => 1, 'b' => 2, 'c' => 3 ];
        $cache = MapCacheLRU::newFromArray( $raw, 3 );
 
        $now = microtime( true );
        $cache->setMockTime( $now );
 
        $cache->setField( 'PMs', 'Tony Blair', 'Labour' );
        $cache->setField( 'PMs', 'Margaret Thatcher', 'Tory' );
        $this->assertTrue( $cache->hasField( 'PMs', 'Tony Blair', 30 ) );
        $this->assertEquals( 'Labour', $cache->getField( 'PMs', 'Tony Blair' ) );
        $this->assertTrue( $cache->hasField( 'PMs', 'Tony Blair', 30 ) );
 
        $now += 29;
        $this->assertTrue( $cache->hasField( 'PMs', 'Tony Blair', 30 ) );
        $this->assertEquals( 'Labour', $cache->getField( 'PMs', 'Tony Blair' ) );
        $this->assertEquals( 'Labour', $cache->getField( 'PMs', 'Tony Blair', 30 ) );
 
        $now += 1.5;
        $this->assertFalse( $cache->hasField( 'PMs', 'Tony Blair', 30 ) );
        $this->assertEquals( 'Labour', $cache->getField( 'PMs', 'Tony Blair' ) );
        $this->assertNull( $cache->getField( 'PMs', 'Tony Blair', 30 ) );
 
        $this->assertEquals(
            [ 'Tony Blair' => 'Labour', 'Margaret Thatcher' => 'Tory' ],
            $cache->get( 'PMs' )
        );
 
        $cache->set( 'MPs', [
            'Edwina Currie' => 1983,
            'Neil Kinnock' => 1970
        ] );
        $this->assertEquals(
            [
                'Edwina Currie' => 1983,
                'Neil Kinnock' => 1970
            ],
            $cache->get( 'MPs' )
        );
 
        $this->assertEquals( 1983, $cache->getField( 'MPs', 'Edwina Currie' ) );
        $this->assertEquals( 1970, $cache->getField( 'MPs', 'Neil Kinnock' ) );
    }
 
    public function testInvalidKeys() {
        $cache = MapCacheLRU::newFromArray( [], 3 );
 
        try {
            $cache->has( 3.4 );
            $this->fail( "No exception" );
        } catch ( UnexpectedValueException $e ) {
            $this->assertRegExp( '/must be string or integer/', $e->getMessage() );
        }
        try {
            $cache->get( false );
            $this->fail( "No exception" );
        } catch ( UnexpectedValueException $e ) {
            $this->assertRegExp( '/must be string or integer/', $e->getMessage() );
        }
        try {
            $cache->set( 3.4, 'x' );
            $this->fail( "No exception" );
        } catch ( UnexpectedValueException $e ) {
            $this->assertRegExp( '/must be string or integer/', $e->getMessage() );
        }
 
        try {
            $cache->hasField( 'x', 3.4 );
            $this->fail( "No exception" );
        } catch ( UnexpectedValueException $e ) {
            $this->assertRegExp( '/must be string or integer/', $e->getMessage() );
        }
        try {
            $cache->getField( 'x', false );
            $this->fail( "No exception" );
        } catch ( UnexpectedValueException $e ) {
            $this->assertRegExp( '/must be string or integer/', $e->getMessage() );
        }
        try {
            $cache->setField( 'x', 3.4, 'x' );
            $this->fail( "No exception" );
        } catch ( UnexpectedValueException $e ) {
            $this->assertRegExp( '/must be string or integer/', $e->getMessage() );
        }
    }
}