SERVER-30769 Mongo shell throws 'exception during autocomplete'

1 files changed, 42 insertions, 0 deletions

diff --git a/jstests/core/autocomplete.js b/jstests/core/autocomplete.js
new file mode 100644
index 00000000000..6eb6e21a7a3
--- /dev/null
+++ b/jstests/core/autocomplete.js
@@ -0,0 +1,42 @@
+/**
+ * Validate auto complete works for various javascript types implemented by C++.
+ */
+(function() {
+    'use strict';
+
+    function testAutoComplete(prefix) {
+        // This method updates a global object with an array of strings on success.
+        shellAutocomplete(prefix);
+        return __autocomplete__;
+    }
+
+    // Create a collection
+    db.auto_complete_coll.insert({});
+
+    // Validate DB auto completion
+    const db_stuff = testAutoComplete('db.');
+
+    // Verify we enumerate built-in methods
+    assert.contains('db.prototype', db_stuff);
+    assert.contains('db.hasOwnProperty', db_stuff);
+    assert.contains('db.toString(', db_stuff);
+
+    // Verify we have some methods we added
+    assert.contains('db.adminCommand(', db_stuff);
+    assert.contains('db.runCommand(', db_stuff);
+
+    // Verify we enumerate collections
+    assert.contains('db.auto_complete_coll', db_stuff);
+
+    // Validate Collection autocompletion
+    const coll_stuff = testAutoComplete('db.auto_complete_coll.');
+
+    // Verify we enumerate built-in methods
+    assert.contains('db.auto_complete_coll.prototype', coll_stuff);
+    assert.contains('db.auto_complete_coll.hasOwnProperty', coll_stuff);
+    assert.contains('db.auto_complete_coll.toString(', coll_stuff);
+
+    // Verify we have some methods we added
+    assert.contains('db.auto_complete_coll.aggregate(', coll_stuff);
+    assert.contains('db.auto_complete_coll.runCommand(', coll_stuff);
+})();
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