public function testIsInTree()
{
$t1 = new Table9();
$this->assertFalse($t1->isInTree(), 'inInTree() returns false for nodes with no left and right value');
$t1->save();
$this->assertFalse($t1->isInTree(), 'inInTree() returns false for saved nodes with no left and right value');
$t1->setLeftValue(1)->setRightValue(0);
$this->assertFalse($t1->isInTree(), 'inInTree() returns false for nodes with zero left value');
$t1->setLeftValue(0)->setRightValue(1);
$this->assertFalse($t1->isInTree(), 'inInTree() returns false for nodes with zero right value');
$t1->setLeftValue(1)->setRightValue(1);
$this->assertFalse($t1->isInTree(), 'inInTree() returns false for nodes with equal left and right value');
$t1->setLeftValue(1)->setRightValue(2);
$this->assertTrue($t1->isInTree(), 'inInTree() returns true for nodes with left < right value');
$t1->setLeftValue(2)->setRightValue(1);
$this->assertFalse($t1->isInTree(), 'inInTree() returns false for nodes with left > right value');
}
