public function testContainTPriorityLists() { $plist = new TPriorityList($this->plist); $this->assertTrue($plist->contains($this->pfirst)); $this->assertTrue($plist->contains($this->pitem1)); $this->assertTrue($plist->contains($this->pitem2)); $this->assertTrue($plist->contains($this->pitem3)); $this->assertFalse($plist->contains($this->pitem5)); }