Migrate tests to Pest (#8)

Reviewed-on: #8

tests/Unit/ConfigurationTest.php

@@ -0,0 +1,36 @@
+<?php
+/**
+ * @author Daniel J. Summers <daniel@bitbadger.solutions>
+ * @license MIT
+ */
+
+declare(strict_types=1);
+
+use BitBadger\PDODocument\{AutoId, Configuration, DocumentException};
+
+pest()->group('unit');
+
+describe('::$idField', function () {
+    test('has expected default value', function () {
+        expect(Configuration::$idField)->toBe('id');
+    });
+});
+
+describe('::$autoId', function () {
+    test('has expected default value', function () {
+        expect(Configuration::$autoId)->toBe(AutoId::None);
+    });
+});
+
+describe('::$idStringLength', function () {
+    test('has expected default value', function () {
+        expect(Configuration::$idStringLength)->toBe(16);
+    });
+});
+
+describe('::dbConn()', function () {
+    test('throws if DSN has not been set', function () {
+        Configuration::useDSN('');
+        expect(fn() => Configuration::dbConn())->toThrow(DocumentException::class);
+    });
+});