/iaLib/ia_examples/ia/Math/Permutation_example.php

<?php

    $ia_example = [
        'title' => 'ia\Math\Permutation', // fully qualified className
        'summary' => '', // class summary
        'full_example' => '', // full usage example, relative path from ia_examples, blank '' not shown.
        'example_file' => 'code/ia/Math/Permutation_example_code.php', // method by method example, blank '' not shown.
    ];
     include( __DIR__ . '/../../template/ia_example_class.php');

/iaLib/ia_examples/code/ia/Math/Permutation_example_code.php

use ia\Math\Permutation;
use ia\DocumentIt\DocumentIt;

echo '<h3>Disclaimer: Auto generated file.
                Please help us setting parameters to useful values and extending the examples.
        </h3>';

try {


echo '<ul class="usage">';



///////// Permutation::permutationsCount(3); //////////////////////////////////////////////////
echo <<< FUNCTIONDEF
<li id='u_permutationsCount'><b>Permutation::permutationsCount(<span class="type">int</span> \$numberOfElements, <span class="type">int</span> \$numberInPermutation <span class="default">= null</span>) <span>: int</span></b>
FUNCTIONDEF;

echo "<pre class='docBlock'>".DocumentIt::methodDocBlockProtected("ia\Math\Permutation", "permutationsCount")."</pre>";

echo "<ol class='usage'>";


    /// display ///
    echo <<< DOCUMENT_EXAMPLE
        <li>Permutation::permutationsCount(3); -&gt;&nbsp;
DOCUMENT_EXAMPLE;
    /// run ///
         echo Permutation::permutationsCount(3);

	echo '</ol>';


///////// Permutation::permutations(['a' => '1', 'b' => '2', 'c' => 3]); //////////////////////////////////////////////////
echo <<< FUNCTIONDEF
<li id='u_permutations'><b>Permutation::permutations(<span class="type">array</span> \$set, <span class="type"></span> \$numberInPermutation <span class="default">= null</span>) <span>: </span></b>
FUNCTIONDEF;

echo "<pre class='docBlock'>".DocumentIt::methodDocBlockProtected("ia\Math\Permutation", "permutations")."</pre>";

echo "<ol class='usage'>";



    /// display ///
    echo <<< DOCUMENT_EXAMPLE
        <li>Permutation::permutations(['a' => '1', 'b' => '2', 'c' => 3]);
        -&gt;&nbsp; </b><br><pre>
DOCUMENT_EXAMPLE;
    /// run ///
        print_r(
        Permutation::permutations(['a' => '1', 'b' => '2', 'c' => 3])
        );
        echo "</pre>";


	echo '</ol>';


/* PerfilExample adds new methods here */

echo '</ul>';

} catch(Exception $exception) { echo "<pre class='errorBlock'>$exception</pre>"; }

phpunit test file template

<?php

use ia\Math\Permutation;
use PHPUnit\Framework\TestCase;

class PermutationTest extends TestCase {



    /**
     * @dataProvider permutationsCount_Provider
     *
     */
    public function test_permutationsCount($numberOfElements, $numberInPermutation , $expected) {
        
        $this->assertEquals($expected, Permutation::permutationsCount($numberOfElements, $numberInPermutation) );
    }

        function permutationsCount_Provider() {
            return [
                'test 1' => [ '', '', '' ],
            ];
        }



    /**
     * @dataProvider permutations_Provider
     *
     */
    public function test_permutations($set, $numberInPermutation , $expected) {
        
        $this->assertEquals($expected, Permutation::permutations($set, $numberInPermutation) );
    }

        function permutations_Provider() {
            return [
                'test 1' => [ '', '', '' ],
            ];
        }


}

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