✅ Add original cases

tests/OriginalReaderSRSSTest.php

@@ -0,0 +1,41 @@
+<?php
+
+use PHPUnit\Framework\TestCase;
+use Shikiryu\SRSS\SRSS;
+use Shikiryu\SRSS\SRSSTools;
+
+class OriginalReaderSRSSTest extends TestCase
+{
+    private string $original = __DIR__.'/resources/harvard.xml';
+    private string $saved = __DIR__.'/resources/tmp/build/rss.xml';
+    protected function tearDown(): void
+    {
+        parent::tearDown();
+        if (file_exists($this->saved)) {
+            unlink($this->saved);
+        }
+    }
+
+    public function testOriginalReader()
+    {
+        $rss = SRSS::read($this->original);
+        self::assertEquals('Liftoff News', $rss->title);
+
+        $article1 = $rss->getItem(1);
+        $articleFirst = $rss->getFirst();
+        self::assertEquals($article1, $articleFirst);
+
+        $links = [];
+        foreach($rss as $article) {
+            $links[] = sprintf('<a href="%s">%s %s</a>', $article->link, SRSSTools::formatDate('d/m/y', $article->pubDate), $article->title);
+        }
+        self::assertCount(4, $links, var_export($links, true));
+
+        $rssArray = $rss->toArray();
+        self::assertCount(11, $rssArray, var_export($rssArray, true)); // 11 elements in RSS
+
+        $rss->save($this->saved);
+
+        self::assertFileExists($this->saved);
+    }
+}