Throw ValidationFailedException with per-field codes for 422 responses

tests/Id/ValidationFailedTest.php

@@ -0,0 +1,61 @@
+<?php
+
+namespace Anikeen\Id\Tests;
+
+use Anikeen\Id\AnikeenId;
+use Anikeen\Id\Billable;
+use Anikeen\Id\Exceptions\PreconditionFailedException;
+use Anikeen\Id\Exceptions\ValidationFailedException;
+use Illuminate\Database\Eloquent\Model;
+
+class ValidationFailedTest extends TestCase
+{
+    private function owner(): Model
+    {
+        $owner = new class extends Model {
+            use Billable;
+
+            protected $guarded = [];
+        };
+        $owner->anikeen_id = '01JUSER';
+        $owner->anikeen_id_access_token = 'user-token';
+
+        return $owner;
+    }
+
+    public function test_422_of_app_requests_is_a_validation_exception(): void
+    {
+        $this->respond(422, ['message' => 'The value is too large.', 'error' => 'value_too_large']);
+
+        try {
+            app(AnikeenId::class)->setPreferenceByUserId('01JUSER', 'example', 'theme', str_repeat('x', 10));
+            $this->fail('No exception thrown');
+        } catch (ValidationFailedException $e) {
+            $this->assertSame('value_too_large', $e->error);
+            $this->assertSame([], $e->errorCodes());
+            $this->assertTrue($e->hasErrorCode('value_too_large'));
+        }
+    }
+
+    public function test_412_stays_a_precondition_failure(): void
+    {
+        $this->respond(412, ['message' => 'Version mismatch.', 'error' => 'preference_version_mismatch', 'current_version' => 3]);
+
+        $this->expectException(PreconditionFailedException::class);
+        $this->owner()->setGlobalPreference('appearance', 'dark', ifVersion: 2);
+    }
+
+    public function test_422_of_user_requests_is_a_validation_exception(): void
+    {
+        $this->respond(422, ['message' => 'Unknown value.', 'error' => 'invalid_shared_value']);
+
+        try {
+            $this->owner()->setGlobalPreference('appearance', 'purple');
+            $this->fail('No exception thrown');
+        } catch (ValidationFailedException $e) {
+            $this->assertSame(422, $e->status);
+            $this->assertSame('invalid_shared_value', $e->error);
+            $this->assertSame([], $e->errorCodes());
+        }
+    }
+}