public function testDateInfinity() { $time = new DateTime('infinity'); $this->assertTrue($time->isInfinity($cardinality)); $this->assertSame($cardinality, 1); $time = new DateTime('+infinity'); $this->assertTrue($time->isInfinity($cardinality)); $this->assertSame($cardinality, 1); $time = new DateTime('-infinity'); $this->assertTrue($time->isInfinity($cardinality)); $this->assertSame($cardinality, -1); }