test: add unit test on resolver

Author: Ark4ne

tests/Unit/Descriptors/ResolverTest.php

@@ -0,0 +1,56 @@
+<?php
+
+namespace Test\Unit\Descriptors;
+
+use Ark4ne\JsonApi\Descriptors\Resolver;
+use Ark4ne\JsonApi\Descriptors\Values\ValueArray;
+use Ark4ne\JsonApi\Descriptors\Values\ValueBool;
+use Ark4ne\JsonApi\Descriptors\Values\ValueMixed;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Http\Request;
+use Test\Support\Reflect;
+use Test\TestCase;
+
+class ResolverTest extends TestCase
+{
+    public function testResolveValue()
+    {
+        $stub = new class {
+            use Resolver;
+
+            public $resource;
+        };
+
+        $stub->resource = new class([
+            'b' => 1,
+            'f' => 123
+        ]) extends Model {
+            protected $fillable = ['b', 'f'];
+        };
+
+        $request = new Request;
+
+        $actual = Reflect::invoke($stub, 'resolveValues', $request, null);
+        $this->assertNull($actual);
+
+        $actual = Reflect::invoke($stub, 'resolveValues', $request, []);
+        $this->assertEquals([], $actual);
+
+        $actual = Reflect::invoke($stub, 'resolveValues', $request, [
+            'a' => 'abc',
+            'b' => new ValueMixed(null),
+            'c' => new ValueMixed('c'),
+            'd' => new ValueMixed(fn() => 'd'),
+            new ValueMixed('e'),
+            new ValueMixed('f'),
+        ]);
+        $this->assertEquals([
+            'a' => 'abc',
+            'b' => 1,
+            'c' => null,
+            'd' => 'd',
+            'e' => null,
+            'f' => 123,
+        ], $actual);
+    }
+}