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-rw-r--r--jstests/core/all3.js28
1 files changed, 28 insertions, 0 deletions
diff --git a/jstests/core/all3.js b/jstests/core/all3.js
new file mode 100644
index 00000000000..b7a05321bbf
--- /dev/null
+++ b/jstests/core/all3.js
@@ -0,0 +1,28 @@
+// Check that $all matching null is consistent with $in - SERVER-3820
+
+t = db.jstests_all3;
+t.drop();
+
+t.save({});
+
+assert.eq( 1, t.count( {foo:{$in:[null]}} ) );
+assert.eq( 1, t.count( {foo:{$all:[null]}} ) );
+assert.eq( 0, t.count( {foo:{$not:{$all:[null]}}} ) );
+assert.eq( 0, t.count( {foo:{$not:{$in:[null]}}} ) );
+
+t.remove({});
+t.save({foo:1});
+assert.eq( 0, t.count( {foo:{$in:[null]}} ) );
+assert.eq( 0, t.count( {foo:{$all:[null]}} ) );
+assert.eq( 1, t.count( {foo:{$not:{$in:[null]}}} ) );
+assert.eq( 1, t.count( {foo:{$not:{$all:[null]}}} ) );
+
+t.remove({});
+t.save( {foo:[0,1]} );
+assert.eq( 1, t.count( {foo:{$in:[[0,1]]}} ) );
+assert.eq( 1, t.count( {foo:{$all:[[0,1]]}} ) );
+
+t.remove({});
+t.save( {foo:[]} );
+assert.eq( 1, t.count( {foo:{$in:[[]]}} ) );
+assert.eq( 1, t.count( {foo:{$all:[[]]}} ) );