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<?php |
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namespace Fisharebest\Tests\Algorithm; |
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use Fisharebest\Algorithm\ConnectedComponent; |
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/** |
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* @author Greg Roach <[email protected]> |
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* @copyright (c) 2021 Greg Roach <[email protected]> |
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* @license GPL-3.0+ |
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* |
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* This program is free software: you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation, either version 3 of the License, or |
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* (at your option) any later version. |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* You should have received a copy of the GNU General Public License |
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* along with this program. If not, see <https://www.gnu.org/licenses>. |
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*/ |
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class ConnectedComponentTest extends BaseTestCase |
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{ |
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/** |
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* A graph with no components. |
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*/ |
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public function testNoComponents() |
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{ |
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$graph = array(); |
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$components = array(); |
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$algorithm = new ConnectedComponent($graph); |
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$this->assertSame($components, $algorithm->findConnectedComponents()); |
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} |
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/** |
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* A graph with one component. |
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* |
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* D----E |
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* / \ \ |
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* / \ \ |
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* A-----B---C |
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* \ / / |
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* \ / / |
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* F----/ |
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*/ |
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public function testOneComponent() |
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{ |
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$graph = array( |
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'A' => array('B' => 1, 'D' => 1, 'F' => 1), |
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'B' => array('A' => 1, 'C' => 1, 'D' => 1, 'F' => 1), |
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'C' => array('B' => 1, 'E' => 1, 'F' => 1), |
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'D' => array('A' => 1, 'B' => 1, 'E' => 1), |
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'E' => array('C' => 1, 'D' => 1), |
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'F' => array('A' => 1, 'B' => 1, 'C' => 1), |
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); |
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$components = array( |
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1 => array('A', 'B', 'C', 'D', 'E', 'F'), |
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); |
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$algorithm = new ConnectedComponent($graph); |
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$this->assertSame($components, $algorithm->findConnectedComponents()); |
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} |
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/** |
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* A graph with two component. |
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* |
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* D E |
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* / \ \ |
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* / \ \ |
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* A-----B C |
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* \ / |
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* \ / |
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* F |
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*/ |
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public function testTwoComponent() |
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{ |
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$graph = array( |
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'A' => array('B' => 1, 'D' => 1, 'F' => 1), |
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'B' => array('A' => 1, 'D' => 1, 'F' => 1), |
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'C' => array('E' => 1), |
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'D' => array('A' => 1, 'B' => 1), |
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'E' => array('C' => 1), |
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'F' => array('A' => 1, 'B' => 1), |
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); |
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$components = array( |
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1 => array('A', 'B', 'D', 'F'), |
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2 => array('C', 'E'), |
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); |
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$algorithm = new ConnectedComponent($graph); |
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$this->assertSame($components, $algorithm->findConnectedComponents()); |
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} |
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/** |
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* A graph with two component. |
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* |
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* A B |
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*/ |
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public function testUnconnected() |
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{ |
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$graph = array( |
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'A' => array(), |
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'B' => array(), |
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); |
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$components = array( |
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1 => array('A'), |
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2 => array('B'), |
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); |
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$algorithm = new ConnectedComponent($graph); |
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$this->assertSame($components, $algorithm->findConnectedComponents()); |
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} |
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} |
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fisharebest /
algorithm
