*/ class JaccardIndexComparisonTest extends \PHPUnit\Framework\TestCase { public function testJaccardIndex() { $c = new JaccardIndexComparison(); $this->assertEquals(1, $c->similarity('a', 'a')); $this->assertEquals(1, $c->similarity(['a'], ['a'])); $this->assertEquals(1, $c->similarity(['a','b'], ['b','a'])); $this->assertEquals(.5, $c->similarity(['a','b'], ['a'])); } }