feat: add unit tests

t/07-blockquotes.t

@@ -0,0 +1,25 @@
+#!/usr/bin/env perl
+use strict;
+use warnings;
+
+use Test::More tests => 3;
+use MarkdownParser;
+
+my $parser = MarkdownParser->new();
+
+is(
+    $parser->parse("> Quote text"),
+    "<blockquote>\n<p>Quote text</p>\n</blockquote>\n",
+    "Simple blockquote"
+);
+is(
+    $parser->parse("> First line\n> Second line"),
+    "<blockquote>\n<p>First line</p>\n<p>Second line</p>\n</blockquote>\n",
+    "Multi-line blockquote"
+);
+is(
+    $parser->parse("> Quote with **bold**"),
+    "<blockquote>\n<p>Quote with <strong>bold</strong></p>\n</blockquote>\n",
+    "Blockquote with formatting"
+);
+