diff --git a/Tests/markdownTest.php b/Tests/markdownTest.php
index 8b46b7a..417e276 100644
--- a/Tests/markdownTest.php
+++ b/Tests/markdownTest.php
@@ -294,4 +294,18 @@ base</code></pre>");
 * line2
 end"));
   }
+
+  public function testUnderscore ()
+  {
+    $this->expectOutputString("<p><em>file1.php</em> or <em>file2.php</em></p>");
+    $md = new markdown ();
+    printf ($md->html ("_file1.php_ or _file2.php_"));
+  }
+
+  public function testCarriageReturn1 ()
+  {
+    $this->expectOutputString("<p>line1 line2</p>");
+    $md = new markdown ();
+    printf ($md->html ("line1\nline2\n"));
+  }
 }