public function testSetAllNone() { $set = new Integer('\\0,-'); $this->assertTrue($set->contains(1, null)); $this->assertSame($set->none(), $set); $this->assertFalse($set->contains(1)); $this->assertFalse($set->contains(null)); $this->assertSame(count($set), 0); $this->assertSame($set->all(), $set); $this->assertTrue($set->contains('-')); $this->assertTrue($set->contains(null)); }