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Valinor/tests/Unit/Mapper/MappingErrorTest.php

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feat!: add access to root node when error occurs during mapping When an error occurs during mapping, the root instance of `Node` can now be accessed from the exception. This recursive object allows retrieving all needed information through the whole mapping tree: path, values, types and messages, including the issues that caused the exception. It can be used like the following: ```php try { (new \CuyZ\Valinor\MapperBuilder()) ->mapper() ->map(SomeClass::class, [/* ... */]); } catch (\CuyZ\Valinor\Mapper\MappingError $error) { // Do something with `$error->node()` // See README for more information } ``` This change removes the method `MappingError::describe()` which provided a flattened view of messages of all the errors that were encountered during the mapping. The same behaviour can still be retrieved, see the example below: ```php use CuyZ\Valinor\Mapper\Tree\Message\Message; use CuyZ\Valinor\Mapper\Tree\Node; /** * @implements \IteratorAggregate<string, array<\Throwable&Message>> */ final class MappingErrorList implements \IteratorAggregate { private Node $node; public function __construct(Node $node) { $this->node = $node; } /** * @return \Traversable<string, array<\Throwable&Message>> */ public function getIterator(): \Traversable { yield from $this->errors($this->node); } /** * @return \Traversable<string, array<\Throwable&Message>> */ private function errors(Node $node): \Traversable { $errors = array_filter( $node->messages(), static fn (Message $m) => $m instanceof \Throwable ); if (! empty($errors)) { yield $node->path() => array_values($errors); } foreach ($node->children() as $child) { yield from $this->errors($child); } } } try { (new \CuyZ\Valinor\MapperBuilder()) ->mapper() ->map(SomeClass::class, [/* ... */]); } catch (\CuyZ\Valinor\Mapper\MappingError $error) { $errors = iterator_to_array(new MappingErrorList($error->node())); } ``` The class `CannotMapObject` is deleted, as it does not provide any value; this means that `MappingError` which was previously an interface becomes a class.
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<?php
declare(strict_types=1);
namespace CuyZ\Valinor\Tests\Unit\Mapper;
use CuyZ\Valinor\Mapper\MappingError;
test: improve `FakeType` and introduce `FakeNode`
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use CuyZ\Valinor\Tests\Fake\Mapper\FakeNode;
feat!: add access to root node when error occurs during mapping When an error occurs during mapping, the root instance of `Node` can now be accessed from the exception. This recursive object allows retrieving all needed information through the whole mapping tree: path, values, types and messages, including the issues that caused the exception. It can be used like the following: ```php try { (new \CuyZ\Valinor\MapperBuilder()) ->mapper() ->map(SomeClass::class, [/* ... */]); } catch (\CuyZ\Valinor\Mapper\MappingError $error) { // Do something with `$error->node()` // See README for more information } ``` This change removes the method `MappingError::describe()` which provided a flattened view of messages of all the errors that were encountered during the mapping. The same behaviour can still be retrieved, see the example below: ```php use CuyZ\Valinor\Mapper\Tree\Message\Message; use CuyZ\Valinor\Mapper\Tree\Node; /** * @implements \IteratorAggregate<string, array<\Throwable&Message>> */ final class MappingErrorList implements \IteratorAggregate { private Node $node; public function __construct(Node $node) { $this->node = $node; } /** * @return \Traversable<string, array<\Throwable&Message>> */ public function getIterator(): \Traversable { yield from $this->errors($this->node); } /** * @return \Traversable<string, array<\Throwable&Message>> */ private function errors(Node $node): \Traversable { $errors = array_filter( $node->messages(), static fn (Message $m) => $m instanceof \Throwable ); if (! empty($errors)) { yield $node->path() => array_values($errors); } foreach ($node->children() as $child) { yield from $this->errors($child); } } } try { (new \CuyZ\Valinor\MapperBuilder()) ->mapper() ->map(SomeClass::class, [/* ... */]); } catch (\CuyZ\Valinor\Mapper\MappingError $error) { $errors = iterator_to_array(new MappingErrorList($error->node())); } ``` The class `CannotMapObject` is deleted, as it does not provide any value; this means that `MappingError` which was previously an interface becomes a class.
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use PHPUnit\Framework\TestCase;
final class MappingErrorTest extends TestCase
{
public function test_node_can_be_retrieved(): void
{
test: improve `FakeType` and introduce `FakeNode`
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$node = FakeNode::any();
feat!: add access to root node when error occurs during mapping When an error occurs during mapping, the root instance of `Node` can now be accessed from the exception. This recursive object allows retrieving all needed information through the whole mapping tree: path, values, types and messages, including the issues that caused the exception. It can be used like the following: ```php try { (new \CuyZ\Valinor\MapperBuilder()) ->mapper() ->map(SomeClass::class, [/* ... */]); } catch (\CuyZ\Valinor\Mapper\MappingError $error) { // Do something with `$error->node()` // See README for more information } ``` This change removes the method `MappingError::describe()` which provided a flattened view of messages of all the errors that were encountered during the mapping. The same behaviour can still be retrieved, see the example below: ```php use CuyZ\Valinor\Mapper\Tree\Message\Message; use CuyZ\Valinor\Mapper\Tree\Node; /** * @implements \IteratorAggregate<string, array<\Throwable&Message>> */ final class MappingErrorList implements \IteratorAggregate { private Node $node; public function __construct(Node $node) { $this->node = $node; } /** * @return \Traversable<string, array<\Throwable&Message>> */ public function getIterator(): \Traversable { yield from $this->errors($this->node); } /** * @return \Traversable<string, array<\Throwable&Message>> */ private function errors(Node $node): \Traversable { $errors = array_filter( $node->messages(), static fn (Message $m) => $m instanceof \Throwable ); if (! empty($errors)) { yield $node->path() => array_values($errors); } foreach ($node->children() as $child) { yield from $this->errors($child); } } } try { (new \CuyZ\Valinor\MapperBuilder()) ->mapper() ->map(SomeClass::class, [/* ... */]); } catch (\CuyZ\Valinor\Mapper\MappingError $error) { $errors = iterator_to_array(new MappingErrorList($error->node())); } ``` The class `CannotMapObject` is deleted, as it does not provide any value; this means that `MappingError` which was previously an interface becomes a class.
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$mappingError = new MappingError($node);
self::assertSame($node, $mappingError->node());
}
}
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