[TASK] Add tests for RuleValueList::getArrayRepresentation()

Part of #1440.

Author: oliverklee

tests/Unit/Value/Fixtures/ConcreteRuleValueList.php

@@ -0,0 +1,9 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Sabberworm\CSS\Tests\Unit\Value\Fixtures;
+
+use Sabberworm\CSS\Value\RuleValueList;
+
+final class ConcreteRuleValueList extends RuleValueList {}

tests/Unit/Value/RuleValueListTest.php

@@ -5,7 +5,8 @@
 namespace Sabberworm\CSS\Tests\Unit\Value;
 
 use PHPUnit\Framework\TestCase;
-use Sabberworm\CSS\Value\RuleValueList;
+use Sabberworm\CSS\Tests\Unit\Value\Fixtures\ConcreteRuleValueList;
+use Sabberworm\CSS\Value\Size;
 
 /**
  * @covers \Sabberworm\CSS\Value\RuleValueList
@@ -19,10 +20,66 @@ final class RuleValueListTest extends TestCase
      */
     public function getArrayRepresentationIncludesClassName(): void
     {
-        $subject = new RuleValueList();
+        $subject = new ConcreteRuleValueList();
 
         $result = $subject->getArrayRepresentation();
 
-        self::assertSame('RuleValueList', $result['class']);
+        self::assertSame('ConcreteRuleValueList', $result['class']);
+    }
+
+    /**
+     * @test
+     */
+    public function getArrayRepresentationIncludesStringComponent(): void
+    {
+        $subject = new ConcreteRuleValueList();
+        $subject->addListComponent('Helvetica');
+
+        $result = $subject->getArrayRepresentation();
+
+        self::assertSame('Helvetica', $result['components'][0]['value']);
+    }
+
+    /**
+     * @test
+     */
+    public function getArrayRepresentationIncludesValueComponent(): void
+    {
+        $subject = new ConcreteRuleValueList();
+        $subject->addListComponent(new Size(1));
+
+        $result = $subject->getArrayRepresentation();
+
+        self::assertSame('Size', $result['components'][0]['class']);
+    }
+
+    /**
+     * @test
+     */
+    public function getArrayRepresentationIncludesMultipleMixedComponents(): void
+    {
+        $subject = new ConcreteRuleValueList();
+        $subject->addListComponent(new Size(1));
+        $subject->addListComponent('+');
+        $subject->addListComponent(new Size(2));
+
+        $result = $subject->getArrayRepresentation();
+
+        self::assertSame('Size', $result['components'][0]['class']);
+        self::assertSame('+', $result['components'][1]['value']);
+        self::assertSame('Size', $result['components'][2]['class']);
+    }
+
+    /**
+     * @test
+     */
+    public function getArrayRepresentationIncludesSeparator(): void
+    {
+        $separator = ', ';
+        $subject = new ConcreteRuleValueList($separator);
+
+        $result = $subject->getArrayRepresentation();
+
+        self::assertSame($separator, $result['separator']);
     }
 }