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<?php
class UIDGeneratorTest extends PHPUnit\Framework\TestCase {
use MediaWikiCoversValidator;
protected function tearDown() {
// Bug: 44850
UIDGenerator::unitTestTearDown();
parent::tearDown();
}
/**
* Test that generated UIDs have the expected properties
*
* @dataProvider provider_testTimestampedUID
* @covers UIDGenerator::newTimestampedUID128
* @covers UIDGenerator::newTimestampedUID88
*/
public function testTimestampedUID( $method, $digitlen, $bits, $tbits, $hostbits ) {
$id = call_user_func( [ UIDGenerator::class, $method ] );
$this->assertEquals( true, ctype_digit( $id ), "UID made of digit characters" );
$this->assertLessThanOrEqual( $digitlen, strlen( $id ),
"UID has the right number of digits" );
$this->assertLessThanOrEqual( $bits, strlen( Wikimedia\base_convert( $id, 10, 2 ) ),
"UID has the right number of bits" );
$ids = [];
for ( $i = 0; $i < 300; $i++ ) {
$ids[] = call_user_func( [ UIDGenerator::class, $method ] );
}
$lastId = array_shift( $ids );
$this->assertSame( array_unique( $ids ), $ids, "All generated IDs are unique." );
foreach ( $ids as $id ) {
// Convert string to binary and pad to full length so we can
// extract segments
$id_bin = Wikimedia\base_convert( $id, 10, 2, $bits );
$lastId_bin = Wikimedia\base_convert( $lastId, 10, 2, $bits );
$timestamp_bin = substr( $id_bin, 0, $tbits );
$last_timestamp_bin = substr( $lastId_bin, 0, $tbits );
$this->assertGreaterThanOrEqual(
$last_timestamp_bin,
$timestamp_bin,
"timestamp ($timestamp_bin) of current ID ($id_bin) >= timestamp ($last_timestamp_bin) " .
"of prior one ($lastId_bin)" );
$hostbits_bin = substr( $id_bin, -$hostbits );
$last_hostbits_bin = substr( $lastId_bin, -$hostbits );
if ( $hostbits ) {
$this->assertEquals(
$hostbits_bin,
$last_hostbits_bin,
"Host ID ($hostbits_bin) of current ID ($id_bin) is same as host ID ($last_hostbits_bin) " .
"of prior one ($lastId_bin)." );
}
$lastId = $id;
}
}
/**
* array( method, length, bits, hostbits )
* NOTE: When adding a new method name here please update the covers tags for the tests!
*/
public static function provider_testTimestampedUID() {
return [
[ 'newTimestampedUID128', 39, 128, 46, 48 ],
[ 'newTimestampedUID128', 39, 128, 46, 48 ],
[ 'newTimestampedUID88', 27, 88, 46, 32 ],
];
}
/**
* @covers UIDGenerator::newUUIDv1
*/
public function testUUIDv1() {
$ids = [];
for ( $i = 0; $i < 100; $i++ ) {
$id = UIDGenerator::newUUIDv1();
$this->assertEquals( true,
preg_match( '!^[0-9a-f]{8}-[0-9a-f]{4}-1[0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$!', $id ),
"UID $id has the right format" );
$ids[] = $id;
$id = UIDGenerator::newRawUUIDv1();
$this->assertEquals( true,
preg_match( '!^[0-9a-f]{12}1[0-9a-f]{3}[89ab][0-9a-f]{15}$!', $id ),
"UID $id has the right format" );
$id = UIDGenerator::newRawUUIDv1();
$this->assertEquals( true,
preg_match( '!^[0-9a-f]{12}1[0-9a-f]{3}[89ab][0-9a-f]{15}$!', $id ),
"UID $id has the right format" );
}
$this->assertEquals( array_unique( $ids ), $ids, "All generated IDs are unique." );
}
/**
* @covers UIDGenerator::newUUIDv4
*/
public function testUUIDv4() {
$ids = [];
for ( $i = 0; $i < 100; $i++ ) {
$id = UIDGenerator::newUUIDv4();
$ids[] = $id;
$this->assertEquals( true,
preg_match( '!^[0-9a-f]{8}-[0-9a-f]{4}-4[0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$!', $id ),
"UID $id has the right format" );
}
$this->assertEquals( array_unique( $ids ), $ids, 'All generated IDs are unique.' );
}
/**
* @covers UIDGenerator::newRawUUIDv4
*/
public function testRawUUIDv4() {
for ( $i = 0; $i < 100; $i++ ) {
$id = UIDGenerator::newRawUUIDv4();
$this->assertEquals( true,
preg_match( '!^[0-9a-f]{12}4[0-9a-f]{3}[89ab][0-9a-f]{15}$!', $id ),
"UID $id has the right format" );
}
}
/**
* @covers UIDGenerator::newRawUUIDv4
*/
public function testRawUUIDv4QuickRand() {
for ( $i = 0; $i < 100; $i++ ) {
$id = UIDGenerator::newRawUUIDv4( UIDGenerator::QUICK_RAND );
$this->assertEquals( true,
preg_match( '!^[0-9a-f]{12}4[0-9a-f]{3}[89ab][0-9a-f]{15}$!', $id ),
"UID $id has the right format" );
}
}
/**
* @covers UIDGenerator::newSequentialPerNodeID
*/
public function testNewSequentialID() {
$id1 = UIDGenerator::newSequentialPerNodeID( 'test', 32 );
$id2 = UIDGenerator::newSequentialPerNodeID( 'test', 32 );
$this->assertInternalType( 'float', $id1, "ID returned as float" );
$this->assertInternalType( 'float', $id2, "ID returned as float" );
$this->assertGreaterThan( 0, $id1, "ID greater than 1" );
$this->assertGreaterThan( $id1, $id2, "IDs increasing in value" );
}
/**
* @covers UIDGenerator::newSequentialPerNodeIDs
*/
public function testNewSequentialIDs() {
$ids = UIDGenerator::newSequentialPerNodeIDs( 'test', 32, 5 );
$lastId = null;
foreach ( $ids as $id ) {
$this->assertInternalType( 'float', $id, "ID returned as float" );
$this->assertGreaterThan( 0, $id, "ID greater than 1" );
if ( $lastId ) {
$this->assertGreaterThan( $lastId, $id, "IDs increasing in value" );
}
$lastId = $id;
}
}
}
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