Create test for sources

tests/Feature/SourceTest.php

@@ -0,0 +1,16 @@
+<?php
+
+use Cerbero\LazyJsonPages\LazyJsonPages;
+
+it('supports multiple sources', function (mixed $source) {
+    $expectedItems = require_once fixture('items.php');
+    $lazyCollection = LazyJsonPages::from($source)
+        ->totalPages('meta.total_pages')
+        ->collect('data.*');
+
+    expect($lazyCollection)->toLoadItemsViaRequests($expectedItems, [
+        'https://example.com/api/v1/users' => 'totalPages/page1.json',
+        'https://example.com/api/v1/users?page=2' => 'totalPages/page2.json',
+        'https://example.com/api/v1/users?page=3' => 'totalPages/page3.json',
+    ]);
+})->with('sources');