// Ensure you can't shard on an array key

var st = new ShardingTest({ name : jsTestName(), shards : 3 })

var mongos = st.s0

var coll = mongos.getCollection( jsTestName() + ".foo" )

st.shardColl( coll, { _id : 1, i : 1 }, { _id : ObjectId(), i : 1 } )

printjson( mongos.getDB("config").chunks.find().toArray() )

st.printShardingStatus()

print( "1: insert some invalid data" )

var value = null;

// Insert an object with invalid array key 
assert.writeError(coll.insert({ i : [ 1, 2 ] }));

// Insert an object with all the right fields, but an invalid array val for _id
assert.writeError(coll.insert({ _id : [ 1, 2 ] , i : 3}));

// Insert an object with valid array key
assert.writeOK(coll.insert({ i : 1 }));

// Update the value with valid other field
value = coll.findOne({ i : 1 })
assert.writeOK(coll.update( value, { $set : { j : 2 } } ));

// Update the value with invalid other fields
value = coll.findOne({ i : 1 })
assert.writeError(coll.update( value, Object.merge( value, { i : [ 3 ] } ) ));

// Multi-update the value with invalid other fields
value = coll.findOne({ i : 1 })
assert.writeError(coll.update( value, Object.merge( value, { i : [ 3, 4 ] } ), false, true));

// Multi-update the value with other fields (won't work, but no error)
value = coll.findOne({ i : 1 })
assert.writeOK(coll.update( Object.merge( value, { i : [ 1, 1 ] } ), { $set : { k : 4 } }, false, true));

// Query the value with other fields (won't work, but no error)
value = coll.findOne({ i : 1 })
coll.find( Object.merge( value, { i : [ 1, 1 ] } ) ).toArray()

// Can't remove using multikey, but shouldn't error
value = coll.findOne({ i : 1 })
coll.remove( Object.extend( value, { i : [ 1, 2, 3, 4 ] } ) )

// Can't remove using multikey, but shouldn't error
value = coll.findOne({ i : 1 })
assert.writeOK(coll.remove( Object.extend( value, { i : [ 1, 2, 3, 4, 5 ] } ) ));
assert.eq( coll.find().itcount(), 1 )

value = coll.findOne({ i : 1 })
assert.writeOK(coll.remove( Object.extend( value, { i : 1 } ) ));
assert.eq( coll.find().itcount(), 0 )

coll.ensureIndex({ _id : 1, i : 1, j: 1 });
// Can insert document that will make index into a multi-key as long as it's not part of shard key.
coll.remove({});
assert.writeOK(coll.insert({ i: 1, j: [1, 2] }));
assert.eq( coll.find().itcount(), 1 );

// Same is true for updates.
coll.remove({});
coll.insert({ _id: 1, i: 1 });
assert.writeOK(coll.update({ _id: 1, i: 1 }, { _id: 1, i:1, j: [1, 2] }));
assert.eq( coll.find().itcount(), 1 );

// Same for upserts.
coll.remove({});
assert.writeOK(coll.update({ _id: 1, i: 1 }, { _id: 1, i:1, j: [1, 2] }, true));
assert.eq( coll.find().itcount(), 1 );

printjson( "Sharding-then-inserting-multikey tested, now trying inserting-then-sharding-multikey" )

// Insert a bunch of data then shard over key which is an array
var coll = mongos.getCollection( "" + coll + "2" )
for( var i = 0; i < 10; i++ ){
    // TODO : does not check weird cases like [ i, i ]
    assert.writeOK(coll.insert({ i : [ i, i + 1 ] }));
}

coll.ensureIndex({ _id : 1, i : 1 })

try {
    st.shardColl( coll, { _id : 1, i : 1 },  { _id : ObjectId(), i : 1 } )
}
catch( e ){
    print( "Correctly threw error on sharding with multikey index." )
}

st.printShardingStatus()

// Insert a bunch of data then shard over key which is not an array
var coll = mongos.getCollection( "" + coll + "3" )
for( var i = 0; i < 10; i++ ){
    // TODO : does not check weird cases like [ i, i ]
    assert.writeOK(coll.insert({ i : i }));
}

coll.ensureIndex({ _id : 1, i : 1 })

st.shardColl( coll, { _id : 1, i : 1 },  { _id : ObjectId(), i : 1 } )

st.printShardingStatus()



// Finish
st.stop()