From 4e4e0e42cd20aa23ab655896be7e00e1ea491078 Mon Sep 17 00:00:00 2001
From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Wed, 6 Jan 2021 01:40:04 +0000
Subject: [PATCH] wip check in-browser error log

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>
---
 wdriver.rs | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/wdriver.rs b/wdriver.rs
index 35d76aac..2c820a65 100644
--- a/wdriver.rs
+++ b/wdriver.rs
@@ -1009,6 +1009,28 @@ impl<'g> WindowGuard<'g> {
       Ok::<(),AE>(())
     })()
       .context("await gen update via async js script")?;
+
+    (|| {
+      let errors = self.su.driver.execute_script(r#"
+        let e = document.getElementById('errors');
+        if (e) {
+          return e.innerHTML;
+        } else {
+          console.log('wdt-*: no errors element, no trapped errors check');
+          return "";
+        }
+      "#)
+        .context("get errors")?;
+      let errors = errors
+        .value()
+        .as_str()
+        .ok_or_else(|| anyhow!("errors script gave non-string"))?;
+      if ! errors.is_empty() {
+        throw!(anyhow!("JS errors - HTML: {}", errors));
+      }
+      Ok::<(),AE>(())
+    })()
+      .context("check for in-client trapped errors")?;
   }
 }
 
-- 
2.30.2