1 files changed, 28 insertions, 0 deletions
diff --git a/jstests/core/all4.js b/jstests/core/all4.js
new file mode 100644
index 00000000000..109795754bc
--- /dev/null
+++ b/jstests/core/all4.js
@@ -0,0 +1,28 @@
+// Test $all/$elemMatch with missing field - SERVER-4492
+
+t = db.jstests_all4;
+t.drop();
+
+function checkQuery( query, val ) {
+    assert.eq( val, t.count(query) );
+    assert.eq( val, t.find(query).itcount() );
+}
+
+checkQuery( {a:{$all:[]}}, 0 );
+checkQuery( {a:{$all:[1]}}, 0 );
+checkQuery( {a:{$all:[{$elemMatch:{b:1}}]}}, 0 );
+
+t.save({});
+checkQuery( {a:{$all:[]}}, 0 );
+checkQuery( {a:{$all:[1]}}, 0 );
+checkQuery( {a:{$all:[{$elemMatch:{b:1}}]}}, 0 );
+
+t.save({a:1});
+checkQuery( {a:{$all:[]}}, 0 );
+checkQuery( {a:{$all:[1]}}, 1 );
+checkQuery( {a:{$all:[{$elemMatch:{b:1}}]}}, 0 );
+
+t.save({a:[{b:1}]});
+checkQuery( {a:{$all:[]}}, 0 );
+checkQuery( {a:{$all:[1]}}, 1 );
+checkQuery( {a:{$all:[{$elemMatch:{b:1}}]}}, 1 );