SERVER-6779 Correctly serialize ExpressionCoerceToBool

1 files changed, 18 insertions, 0 deletions

diff --git a/jstests/aggregation/bugs/server6779.js b/jstests/aggregation/bugs/server6779.js
new file mode 100644
index 00000000000..4545dcaff0a
--- /dev/null
+++ b/jstests/aggregation/bugs/server6779.js
@@ -0,0 +1,18 @@
+// server 6779: serializing ExpressionCoerceToBool
+// This test only fails in debug mode with the bug since that tests round-tripping
+function test(op, val) {
+    t = db.server6779;
+    t.drop();
+
+    t.insert({a:true});
+    t.insert({a:false});
+
+    obj = {};
+    obj[op] = ['$a', val];
+    result = t.aggregate({$project: {_id: 0, bool: obj}});
+
+    assert.commandWorked(result);
+    assert.eq(result.result, [{bool:true}, {bool:false}]);
+}
+test('$and', true);
+test('$or', false);