Migrate tests to Pest (#8)

Reviewed-on: #8

tests/Unit/Mapper/DocumentMapperTest.php

@@ -0,0 +1,65 @@
+<?php
+/**
+ * @author Daniel J. Summers <daniel@bitbadger.solutions>
+ * @license MIT
+ */
+
+declare(strict_types=1);
+
+use BitBadger\PDODocument\{DocumentException, Field};
+use BitBadger\PDODocument\Mapper\DocumentMapper;
+use Test\{PjsonDocument, PjsonId};
+
+// ** Test class hierarchy for serialization **
+
+class DocMapSubDoc
+{
+    public function __construct(public int $id = 0, public string $name = '') { }
+}
+
+class DocMapTestDoc
+{
+    public function __construct(public int $id = 0, public DocMapSubDoc $subDoc = new DocMapSubDoc()) { }
+}
+
+pest()->group('unit');
+
+describe('Constructor', function () {
+    test('uses "data" as the default field name', function () {
+        expect(new DocumentMapper(Field::class))->fieldName->toBe('data');
+    });
+    test('uses the provided field name', function () {
+        expect(new DocumentMapper(Field::class, 'json'))->fieldName->toBe('json');
+    });
+});
+
+describe('->map()', function () {
+    test('deserializes valid JSON', function () {
+        $doc = (new DocumentMapper(DocMapTestDoc::class))
+            ->map(['data' => '{"id":7,"subDoc":{"id":22,"name":"tester"}}']);
+        expect($doc)
+            ->not->toBeNull()
+            ->id->toBe(7)
+            ->and($doc->subDoc)
+            ->not->toBeNull()
+            ->id->toBe(22)
+            ->name->toBe('tester');
+    });
+    test('deserializes valid JSON [Pjson]', function () {
+        $doc = (new DocumentMapper(PjsonDocument::class))->map(['data' => '{"id":"seven","name":"bob","num_value":8}']);
+        expect($doc)
+            ->not->toBeNull()
+            ->id->toEqual(new PjsonId('seven'))
+            ->name->toBe('bob')
+            ->numValue->toBe(8)
+            ->skipped->toBeEmpty();
+    });
+    test('throws for invalid JSON', function () {
+        expect(fn() => (new DocumentMapper(DocMapTestDoc::class))->map(['data' => 'this is not valid']))
+            ->toThrow(DocumentException::class);
+    });
+    test('throws for invalid JSON [Pjson]', function () {
+        expect(fn() => (new DocumentMapper(PjsonDocument::class))->map(['data' => 'not even close']))
+            ->toThrow(DocumentException::class);
+    });
+});