More math syntax

1 files changed, 6 insertions, 2 deletions

diff --git a/tools/test-helper/extension.js b/tools/test-helper/extension.js
index 253c78c7..60fbe71d 100644
--- a/tools/test-helper/extension.js
+++ b/tools/test-helper/extension.js
@@ -132,15 +132,19 @@ function getWebviewContent(pngSrc, refSrc, stdout, stderr) {
         </div>
 
         <h1>Standard output</h1>
-        <pre>${stdout}</pre>
+        <pre>${escape(stdout)}</pre>
 
         <h1>Standard error</h1>
-        <pre>${stderr}</pre>
+        <pre>${escape(stderr)}</pre>
     </body>
     </html>
     `
 }
 
+function escape(text) {
+    return text.replace(/</g, "&lt;").replace(/>/g, "&gt;");
+}
+
 function deactivate() {}
 
 module.exports = { activate, deactivate }