public function testIsLeaf() { $this->assertTrue($this->categories('Child 1')->isLeaf()); $this->assertTrue($this->categories('Child 2.1')->isLeaf()); $this->assertTrue($this->categories('Child 3')->isLeaf()); $this->assertTrue($this->categories('Root 2')->isLeaf()); $this->assertFalse($this->categories('Root 1')->isLeaf()); $this->assertFalse($this->categories('Child 2')->isLeaf()); $new = new Category(); $this->assertFalse($new->isLeaf()); }