feat(form-builder): MergeStrategy enum methods + binding value objects (WS-6)

- FormFieldBindingMergeStrategy::nullWinnerBehaviour() and
  isValidForScalarTargets() encode the per-strategy null-winner matrix
  (RFC Q7) and the collection-only restriction (RFC V1).
- ResolvedBinding/BindingApplicationResult/BindingPassResult readonly
  DTOs for the binding pipeline. Construction-time validation for
  trust level. Apply-status derived from result aggregate.

Note: the existing enum is named FormFieldBindingMergeStrategy (not
MergeStrategy as the prompt sketched). Methods added to it directly.

Refs: RFC-WS-6.md §3 (Q4, Q7), §4 (V1)

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
This commit is contained in:
2026-04-25 22:38:55 +02:00
parent 447511634d
commit b2e9ef8824
8 changed files with 463 additions and 0 deletions

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<?php
declare(strict_types=1);
namespace Tests\Unit\FormBuilder\Bindings;
use App\FormBuilder\Bindings\BindingApplicationResult;
use PHPUnit\Framework\TestCase;
use RuntimeException;
final class BindingApplicationResultTest extends TestCase
{
public function test_succeeded_constructor_populates_state_correctly(): void
{
$result = BindingApplicationResult::succeeded(
bindingId: 'bnd-1',
targetEntity: 'person',
targetAttribute: 'email',
oldValue: null,
newValue: 'jan@example.nl',
);
$this->assertTrue($result->success);
$this->assertSame('bnd-1', $result->bindingId);
$this->assertSame('person', $result->targetEntity);
$this->assertSame('email', $result->targetAttribute);
$this->assertNull($result->oldValue);
$this->assertSame('jan@example.nl', $result->newValue);
$this->assertNull($result->exceptionClass);
$this->assertNull($result->exceptionMessage);
}
public function test_failed_constructor_captures_exception_metadata(): void
{
$exception = new RuntimeException('boom');
$result = BindingApplicationResult::failed(
bindingId: 'bnd-2',
targetEntity: 'company',
targetAttribute: 'name',
e: $exception,
);
$this->assertFalse($result->success);
$this->assertSame('bnd-2', $result->bindingId);
$this->assertNull($result->oldValue);
$this->assertNull($result->newValue);
$this->assertSame(RuntimeException::class, $result->exceptionClass);
$this->assertSame('boom', $result->exceptionMessage);
}
}

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<?php
declare(strict_types=1);
namespace Tests\Unit\FormBuilder\Bindings;
use App\Enums\FormBuilder\ApplyStatus;
use App\FormBuilder\Bindings\BindingApplicationResult;
use App\FormBuilder\Bindings\BindingPassResult;
use PHPUnit\Framework\TestCase;
use RuntimeException;
final class BindingPassResultTest extends TestCase
{
public function test_empty_applications_yield_completed(): void
{
$result = $this->make([]);
$this->assertSame(ApplyStatus::COMPLETED, $result->applyStatus());
$this->assertSame(0, $result->successCount());
$this->assertSame(0, $result->failureCount());
}
public function test_all_succeeded_yields_completed(): void
{
$result = $this->make([$this->success('a'), $this->success('b')]);
$this->assertSame(ApplyStatus::COMPLETED, $result->applyStatus());
$this->assertSame(2, $result->successCount());
$this->assertSame(0, $result->failureCount());
$this->assertSame([], $result->failures());
}
public function test_all_failed_yields_failed(): void
{
$result = $this->make([$this->failure('a'), $this->failure('b')]);
$this->assertSame(ApplyStatus::FAILED, $result->applyStatus());
$this->assertSame(0, $result->successCount());
$this->assertSame(2, $result->failureCount());
$this->assertCount(2, $result->failures());
}
public function test_mixed_yields_partial(): void
{
$result = $this->make([
$this->success('a'),
$this->failure('b'),
$this->success('c'),
]);
$this->assertSame(ApplyStatus::PARTIAL, $result->applyStatus());
$this->assertSame(2, $result->successCount());
$this->assertSame(1, $result->failureCount());
$this->assertCount(1, $result->failures());
$this->assertSame('b', $result->failures()[0]->bindingId);
}
/**
* @param list<BindingApplicationResult> $applications
*/
private function make(array $applications): BindingPassResult
{
return new BindingPassResult(
formSubmissionId: 'fs-1',
provisionedSubjectType: 'person',
provisionedSubjectId: 'p-1',
applications: $applications,
);
}
private function success(string $bindingId): BindingApplicationResult
{
return BindingApplicationResult::succeeded(
bindingId: $bindingId,
targetEntity: 'person',
targetAttribute: 'email',
oldValue: null,
newValue: 'x@y.z',
);
}
private function failure(string $bindingId): BindingApplicationResult
{
return BindingApplicationResult::failed(
bindingId: $bindingId,
targetEntity: 'person',
targetAttribute: 'email',
e: new RuntimeException('boom'),
);
}
}

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<?php
declare(strict_types=1);
namespace Tests\Unit\FormBuilder\Bindings;
use App\Enums\FormBuilder\BindingTargetType;
use App\Enums\FormBuilder\FormFieldBindingMergeStrategy;
use App\FormBuilder\Bindings\ResolvedBinding;
use InvalidArgumentException;
use PHPUnit\Framework\TestCase;
final class ResolvedBindingTest extends TestCase
{
public function test_construction_with_valid_data(): void
{
$binding = $this->makeWith(['trustLevel' => 80]);
$this->assertSame(80, $binding->trustLevel);
$this->assertSame('person', $binding->targetEntity);
}
public function test_trust_level_lower_bound(): void
{
$binding = $this->makeWith(['trustLevel' => 0]);
$this->assertSame(0, $binding->trustLevel);
}
public function test_trust_level_upper_bound(): void
{
$binding = $this->makeWith(['trustLevel' => 100]);
$this->assertSame(100, $binding->trustLevel);
}
public function test_trust_level_below_zero_throws(): void
{
$this->expectException(InvalidArgumentException::class);
$this->makeWith(['trustLevel' => -1]);
}
public function test_trust_level_above_hundred_throws(): void
{
$this->expectException(InvalidArgumentException::class);
$this->makeWith(['trustLevel' => 101]);
}
public function test_empty_target_entity_throws(): void
{
$this->expectException(InvalidArgumentException::class);
$this->makeWith(['targetEntity' => '']);
}
public function test_empty_target_attribute_throws(): void
{
$this->expectException(InvalidArgumentException::class);
$this->makeWith(['targetAttribute' => '']);
}
public function test_null_value_preserved_with_explicit_flag(): void
{
$binding = $this->makeWith([
'value' => null,
'valueIsExplicit' => true,
]);
$this->assertNull($binding->value);
$this->assertTrue($binding->valueIsExplicit);
}
/**
* @param array<string, mixed> $overrides
*/
private function makeWith(array $overrides): ResolvedBinding
{
$defaults = [
'sourceFormFieldId' => '01jq1k1k1k1k1k1k1k1k1k1k1k',
'bindingId' => '01jq1k1k1k1k1k1k1k1k1k1k1l',
'targetEntity' => 'person',
'targetAttribute' => 'email',
'targetType' => BindingTargetType::SCALAR,
'mergeStrategy' => FormFieldBindingMergeStrategy::Overwrite,
'trustLevel' => 50,
'isIdentityKey' => false,
'value' => 'jan@example.nl',
'valueIsExplicit' => true,
];
$args = array_merge($defaults, $overrides);
return new ResolvedBinding(
sourceFormFieldId: $args['sourceFormFieldId'],
bindingId: $args['bindingId'],
targetEntity: $args['targetEntity'],
targetAttribute: $args['targetAttribute'],
targetType: $args['targetType'],
mergeStrategy: $args['mergeStrategy'],
trustLevel: $args['trustLevel'],
isIdentityKey: $args['isIdentityKey'],
value: $args['value'],
valueIsExplicit: $args['valueIsExplicit'],
);
}
}