ChainingTest.php

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<?php

declare(strict_types=1);

namespace ILIAS\Tests\UI\Help\TextRetriever;

use ILIAS\UI\HelpTextRetriever;
use ILIAS\UI\Help\TextRetriever\Chaining;
use ILIAS\UI\Help\Topic;
use ILIAS\UI\Help\Purpose;
use PHPUnit\Framework\TestCase;

class ChainingTest extends TestCase
{
    protected HelpTextRetriever $retriever_a;
    protected HelpTextRetriever $retriever_b;

    public function setUp(): void
    {
        $this->retriever_a = new class () implements HelpTextRetriever {
            public function getHelpText(Purpose $purpose, Topic ...$topics): array
            {
                return ["a"];
            }
        };

        $this->retriever_b = new class () implements HelpTextRetriever {
            public function getHelpText(Purpose $purpose, Topic ...$topics): array
            {
                return ["b"];
            }
        };
    }

    public function testGetHelpTextChaining(): void
    {
        $retriever = new Chaining($this->retriever_a, $this->retriever_b);

        $result = $retriever->getHelpText(new Purpose(Purpose::PURPOSE_TOOLTIP));

        $this->assertEquals(["a", "b"], $result);
    }

    public function testGetHelpTextRemovesDuplicates(): void
    {
        $retriever = new Chaining($this->retriever_a, $this->retriever_a);

        $result = $retriever->getHelpText(new Purpose(Purpose::PURPOSE_TOOLTIP));

        $this->assertEquals(["a"], $result);
    }
}