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// SERVER-4638 - this tests explicit undefined values
// This case is marked as a dup of SERVER-4674
t = db.server4638
t.drop();
for ( i=0; i<2; i++ ){
//t.insert( { _id : i , x : i } ); // this version works
t.insert( { _id : i , x : i , undef: undefined } );
}
db.getLastError();
res = t.aggregate( { $project : { x : 1 } } )
printjson(res)
assert(res.ok, 'server4638 failed');
res = t.aggregate( { $project : { undef : 1 } } )
printjson(res)
assert(res.ok, 'server4638 failed 2');
assert.eq(res.result[0].undef, undefined);
// assert.eq(typeof(res.result[0].undef), "undefined"); // Commented out due to SERVER-6102
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