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a97b406154
Will recursively flatten messages of a node and all its children.
This helper can for instance be used when errors occurred during a
mapping to flatten all caught errors into a basic array of string that
can then easily be used to inform the user of what is wrong.
```
try {
// …
} catch(MappingError $error) {
$messages = (new MessagesFlattener($error->node()))->errors();
foreach ($messages as $message) {
echo $message;
}
}
```
32 lines
1.0 KiB
PHP
32 lines
1.0 KiB
PHP
<?php
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declare(strict_types=1);
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namespace CuyZ\Valinor\Tests\Unit\Mapper\Tree\Message;
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use CuyZ\Valinor\Mapper\Tree\Message\MessagesFlattener;
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use CuyZ\Valinor\Tests\Fake\Mapper\FakeNode;
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use CuyZ\Valinor\Tests\Fake\Mapper\Tree\Message\FakeErrorMessage;
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use CuyZ\Valinor\Tests\Fake\Mapper\Tree\Message\FakeMessage;
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use PHPUnit\Framework\TestCase;
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final class MessagesFlattenerTest extends TestCase
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{
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public function test_messages_are_filtered_and_can_be_iterated_through(): void
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{
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$messageA = new FakeMessage();
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$errorA = new FakeErrorMessage('some error message A');
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$errorB = new FakeErrorMessage('some error message B');
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$node = FakeNode::branch([
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'foo' => ['message' => $messageA],
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'bar' => ['message' => $errorA],
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])->withMessage($errorB);
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$messages = [...(new MessagesFlattener($node))->errors()];
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self::assertSame('some error message B', (string)$messages[0]);
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self::assertSame('some error message A', (string)$messages[1]);
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}
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}
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