49 lines
2.2 KiB
JavaScript
49 lines
2.2 KiB
JavaScript
// SERVER-8141 Avoid treating arrays as literals in aggregation pipeline.
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(function() {
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'use strict';
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var coll = db.exprs_in_arrays;
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coll.drop();
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assert.writeOK(coll.insert({_id: 0, a: ['foo', 'bar', 'baz'], b: 'bar', c: 'Baz'}));
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// An array of constants should still evaluate to an array of constants.
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var pipeline = [{$project: {_id: 0, d: ['constant', 1]}}];
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assert.eq(coll.aggregate(pipeline).toArray(), [{d: ['constant', 1]}]);
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// A field name inside an array should take on the value of that field.
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pipeline = [{$project: {_id: 0, d: ['$b']}}];
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assert.eq(coll.aggregate(pipeline).toArray(), [{d: ['bar']}]);
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// An expression inside an array should be evaluated.
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pipeline = [{$project: {_id: 0, d: [{$toLower: 'FoO'}]}}];
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assert.eq(coll.aggregate(pipeline).toArray(), [{d: ['foo']}]);
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// Both an expression and a field name inside an array should be evaluated.
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pipeline = [{$project: {_id: 0, d: ['$b', {$toLower: 'FoO'}]}}];
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assert.eq(coll.aggregate(pipeline).toArray(), [{d: ['bar', 'foo']}]);
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// A nested array should still be evaluated.
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pipeline = [{$project: {_id: 0, d: ['$b', 'constant', [1, {$toLower: 'FoO'}]]}}];
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assert.eq(coll.aggregate(pipeline).toArray(), [{d: ['bar', 'constant', [1, 'foo']]}]);
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// Should still evaluate array elements inside arguments to an expression.
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pipeline = [{$project: {_id: 0, d: {$setIntersection: ['$a', ['$b']]}}}];
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assert.eq(coll.aggregate(pipeline).toArray(), [{d: ['bar']}]);
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pipeline = [{$project: {_id: 0, d: {$setIntersection: ['$a', [{$toLower: 'FoO'}]]}}}];
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assert.eq(coll.aggregate(pipeline).toArray(), [{d: ['foo']}]);
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// Nested arrays.
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pipeline = [{$project: {_id: 0, d: {$setIntersection: [[[1, 'foo', 'bar']],
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[[1, {$toLower: 'FoO'}, '$b']]]}}}];
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assert.eq(coll.aggregate(pipeline).toArray(), [{d: [[1, 'foo', 'bar']]}]);
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coll.drop();
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// Should replace missing values with NULL to preserve indices.
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assert.writeOK(coll.insert({_id: 1, x: 1, z: 2}));
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pipeline = [{$project: {_id: 0, coordinate: ['$x', '$y', '$z']}}];
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assert.eq(coll.aggregate(pipeline).toArray(), [{coordinate: [1, null, 2]}]);
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}());
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