File: pushall.js

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mongodb 1%3A1.4.4-3
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t = db.jstests_pushall;
t.drop();

t.save( { a: [ 1, 2, 3 ] } );
t.update( {}, { $pushAll: { a: [ 4 ] } } );
assert.eq( [ 1, 2, 3, 4 ], t.findOne().a );
t.update( {}, { $pushAll: { a: [ 4 ] } } );
assert.eq( [ 1, 2, 3, 4, 4 ], t.findOne().a );

t.drop();
t.save( { a: [ 1, 2, 3 ] } );
t.update( {}, { $pushAll: { a: [ 4, 5 ] } } );
assert.eq( [ 1, 2, 3, 4, 5 ], t.findOne().a );
t.update( {}, { $pushAll: { a: [] } } );
assert.eq( [ 1, 2, 3, 4, 5 ], t.findOne().a );

t.drop();
t.save( {} );
t.update( {}, { $pushAll: { a: [ 1, 2 ] } } );
assert.eq( [ 1, 2 ], t.findOne().a );