diff --git a/testing/btest/Baseline/javascript.log-delay/.stdout b/testing/btest/Baseline/javascript.log-delay/.stdout
new file mode 100644
index 0000000000..2f2bd3a208
--- /dev/null
+++ b/testing/btest/Baseline/javascript.log-delay/.stdout
@@ -0,0 +1,4 @@
+### BTest baseline data generated by btest-diff. Do not edit. Use "btest -U/-u" to update. Requires BTest >= 0.63.
+1362692527.009775 delaying record
+1362692527.080972 delay finish
+1362692527.080972 HTTP::log_policy CHhAvVGS1DHFjwGM9 141.142.228.5 192.150.187.43 JS: after delay
diff --git a/testing/btest/Baseline/javascript.log-delay/http.log.cut b/testing/btest/Baseline/javascript.log-delay/http.log.cut
new file mode 100644
index 0000000000..2b573a5c1b
--- /dev/null
+++ b/testing/btest/Baseline/javascript.log-delay/http.log.cut
@@ -0,0 +1,3 @@
+### BTest baseline data generated by btest-diff. Do not edit. Use "btest -U/-u" to update. Requires BTest >= 0.63.
+ts	uid	id.orig_h	id.resp_h	new_field
+XXXXXXXXXX.XXXXXX	CHhAvVGS1DHFjwGM9	141.142.228.5	192.150.187.43	JS: after delay
diff --git a/testing/btest/javascript/log-delay.js b/testing/btest/javascript/log-delay.js
new file mode 100644
index 0000000000..e3c1fe2edd
--- /dev/null
+++ b/testing/btest/javascript/log-delay.js
@@ -0,0 +1,53 @@
+/*
+ * @TEST-DOC: Test delaying a log record from JavaScript
+ * @TEST-REQUIRES: $SCRIPTS/have-javascript
+ * @TEST-EXEC: zeek -b -Cr $TRACES/http/get.trace main.zeek exit_only_after_terminate=T
+ * @TEST-EXEC: TEST_DIFF_CANONIFIER= btest-diff .stdout
+ * @TEST-EXEC: zeek-cut -m ts uid id.orig_h id.resp_h new_field < http.log > http.log.cut
+ * @TEST-EXEC: btest-diff http.log.cut
+ */
+@TEST-START-FILE main.zeek
+@load base/protocols/http
+
+redef record HTTP::Info += {
+  new_field: string &optional &log;
+};
+
+# Load the JavaScript pieces
+@load ./main.js
+@TEST-END-FILE
+
+@TEST-START-FILE main.js
+zeek.hook('Log::log_stream_policy', (rec, id) => {
+  if ( id != "HTTP::LOG" )
+    return;
+
+  let nt = zeek.invoke('network_time');
+  console.log(nt, 'delaying record');
+
+  // Log::delay() of the in-flight write.
+  let token = zeek.invoke('Log::delay', [id, rec]);
+
+  // 10msec delayed record enrichment
+  setTimeout(() => {
+    let nt = zeek.invoke('network_time');
+    rec.new_field = "JS: after delay";
+    console.log(nt, 'delay finish');
+    zeek.invoke('Log::delay_finish', [id, rec, token]);
+
+    // Shutdown, too.
+    zeek.invoke('terminate');
+  }, 10);
+
+});
+
+zeek.hook('HTTP::log_policy', (rec, id, filter) => {
+  let nt = zeek.invoke('network_time');
+  console.log(nt, 'HTTP::log_policy', rec.uid, rec.id.orig_h, rec.id.resp_h, rec.new_field);
+});
+
+setTimeout(() => {
+  console.error('force exit');
+  process.exit(1);
+}, 5000);
+@TEST-END-FILE