added test for ordered lists (`<ol>`)

tests/ListsTest.php

@@ -29,4 +29,31 @@ final class ListsTest extends TestCase {
 		[$source, $result] = createTest($source, $target);
 		$this->assertEquals($source, $result);
 	}
+	
+	public function testOrderedListsParseCorrectly() : void {
+		$source = "
+
+1. Listpoint A
+2. Listpoint B
+	1. Subpoint B1
+	2. Subpoint B2
+3. Listpoint C
+
+		";
+		$target = "
+<ol>
+	<li> Listpoint A</li>
+	<li>
+		Listpoint B
+		<ol>
+			<li> Subpoint B1</li>
+			<li> Subpoint B2</li>
+		</ol>
+	</li>
+	<li> Listpoint C</li>
+</ol>
+		";
+		[$source, $result] = createTest($source, $target);
+		$this->assertEquals($source, $result);
+	}
 }