Migrated to PHP 8.0.

Author: hopeseekr

composer.json

@@ -24,7 +24,7 @@
         }
     ],
     "require": {
-        "php": "^7.1",
+        "php": "^7.2|8.0.*",
         "tightenco/collect": "^5.6"
     },
     "require-dev": {

tests/InitialiseGenomeTest.php

@@ -3,7 +3,7 @@
 namespace PHPExperts\GAO\Tests;
 
 use PHPUnit\Framework\TestCase;
-use PHPExperts\GAO\Tests\Solutions\Mixed;
+use PHPExperts\GAO\Tests\Solutions\MixedVars;
 use PHPExperts\GAO\Tests\Solutions\Chars;
 use PHPExperts\GAO\Tests\Solutions\Floats;
 use PHPExperts\GAO\Tests\Solutions\Integers;
@@ -50,7 +50,7 @@ public function can_intialise_genome_as_floats()
     /** @test */
     public function can_intialise_genome_with_mixed_chromosome_types()
     {
-        $solution = new Mixed();
+        $solution = new MixedVars();
         $solution->initialise();
 
         $this->assertEquals(3, sizeof($solution->chromosomes()));

tests/OptimiserTest.php

@@ -5,14 +5,14 @@
 use PHPExperts\GAO\Breeder;
 use PHPExperts\GAO\Population;
 use PHPUnit\Framework\TestCase;
-use PHPExperts\GAO\Tests\Solutions\Mixed;
+use PHPExperts\GAO\Tests\Solutions\MixedVars;
 
 class BreederTest extends TestCase
 {
     /** @test */
     public function can_load_evaluation_data_after_gao_construction_and_run_optimiser()
     {
-        $gao = new Breeder(new Population(Mixed::class, 10));
+        $gao = new Breeder(new Population(MixedVars::class, 10));
         $gao->loadEvaluationData('anything');
         $gao->run();
         $this->addToAssertionCount(1);
@@ -21,27 +21,27 @@ public function can_load_evaluation_data_after_gao_construction_and_run_optimise
     /** @test */
     public function can_load_evaluation_data_during_gao_construction_and_run_optimiser()
     {
-        $gao = new Breeder(new Population(Mixed::class, 10), ['evaluationData' => 'something']);
+        $gao = new Breeder(new Population(MixedVars::class, 10), ['evaluationData' => 'something']);
         $gao->run();
         $this->addToAssertionCount(1);
     }
 
     /** @test */
     public function running_optimiser_yields_results_for_each_generation()
     {
-        $optimiser = new Breeder(new Population(Mixed::class, 10));
+        $optimiser = new Breeder(new Population(MixedVars::class, 10));
         $optimiser->run();
 
         $this->assertCount(10, $optimiser->results);
         foreach ($optimiser->results as $result) {
-            $this->assertInstanceOf(Mixed::class, $result);
+            $this->assertInstanceOf(MixedVars::class, $result);
         }
     }
 
     /** @test */
     public function number_of_generations_is_controllable()
     {
-        $optimiser = new Breeder(new Population(Mixed::class, 10), ['maxGenerations' => 5]);
+        $optimiser = new Breeder(new Population(MixedVars::class, 10), ['maxGenerations' => 5]);
         $optimiser->run();
 
         $this->assertCount(5, $optimiser->results);

tests/PopulationTest.php

@@ -4,7 +4,7 @@
 
 use PHPExperts\GAO\Population;
 use PHPUnit\Framework\TestCase;
-use PHPExperts\GAO\Tests\Solutions\Mixed;
+use PHPExperts\GAO\Tests\Solutions\MixedVars;
 use PHPExperts\GAO\Tests\Solutions\Integers;
 
 class PopulationTest extends TestCase
@@ -32,7 +32,7 @@ public function can_initialise_new_population()
     /** @test */
     public function can_evaluate_a_population_without_evaluation_data()
     {
-        $population = new Population(Mixed::class, 3);
+        $population = new Population(MixedVars::class, 3);
         $population->evaluate(null);
         $best = $population->findBest();
 

tests/Solutions/Mixed.php renamed to tests/Solutions/MixedVars.php

@@ -4,7 +4,7 @@
 
 use PHPExperts\GAO\Solution;
 
-class Mixed extends Solution
+class MixedVars extends Solution
 {
     public function genome()
     {