SERVER-25895 JS Exceptions can overflow BufBuilder

1 files changed, 16 insertions, 0 deletions

diff --git a/jstests/core/throw_big.js b/jstests/core/throw_big.js
new file mode 100644
index 00000000000..422ee93a6ae
--- /dev/null
+++ b/jstests/core/throw_big.js
@@ -0,0 +1,16 @@
+/**
+ * Test that verifies the javascript integration can handle large string exception messages.
+ */
+(function() {
+    'use strict';
+
+    var len = 65 * 1024 * 1024;
+    var str = new Array(len + 1).join('b');
+
+    // We expect to successfully throw and catch this large exception message.
+    // We do not want the mongo shell to terminate.
+    assert.throws(function() {
+        throw str;
+    });
+
+})();