92 lines
2.9 KiB
JavaScript
92 lines
2.9 KiB
JavaScript
/*
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* Test partitioning inside $setWindowFields.
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*
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* @tags: [
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* # We assume the pipeline is not split into a shardsPart and mergerPart.
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* assumes_unsharded_collection,
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* # We're testing the explain plan, not the query results, so the facet passthrough would fail.
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* do_not_wrap_aggregations_in_facets,
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* ]
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*/
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(function() {
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"use strict";
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load('jstests/aggregation/extras/utils.js'); // For resultsEq.
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const coll = db[jsTestName()];
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coll.drop();
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assert.commandWorked(coll.insert({int_field: 0, arr: [1, 2]}));
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// Test for runtime error when 'partitionBy' expression evaluates to an array
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assert.commandFailedWithCode(coll.runCommand({
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aggregate: coll.getName(),
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pipeline: [{
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$setWindowFields: {
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partitionBy: "$arr",
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sortBy: {_id: 1},
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output: {a: {$sum: "$int_field", window: {documents: ["unbounded", "current"]}}}
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}
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}],
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cursor: {}
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}),
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ErrorCodes.TypeMismatch);
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// Test that a constant expression for 'partitionBy' is equivalent to no partitioning.
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const constantPartitionExprs = [null, "constant", {$add: [1, 2]}];
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constantPartitionExprs.forEach(function(partitionExpr) {
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const result = coll.explain().aggregate([
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// prevent stages from being absorbed into the .find() layer
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{$_internalInhibitOptimization: {}},
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{$setWindowFields: {partitionBy: partitionExpr, output: {}}},
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]);
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assert.commandWorked(result);
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assert(Array.isArray(result.stages), result);
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assert(result.stages[0].$cursor, result);
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assert(result.stages[1].$_internalInhibitOptimization, result);
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assert.eq({$_internalSetWindowFields: {output: {}}}, result.stages[2]);
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});
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coll.drop();
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assert.commandWorked(coll.insertMany([
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{int_field: 0},
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{int_field: null, other_field: null},
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{other_field: 0},
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{int_field: null},
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{other_field: null},
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{int_field: null, other_field: null}
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]));
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// Test that missing and null field are in the same partition.
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let res = coll.aggregate([
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{$setWindowFields: {partitionBy: "$int_field", output: {count: {$sum: 1}}}},
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{$project: {_id: 0}}
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]);
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assert(resultsEq(res.toArray(), [
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{int_field: null, other_field: null, count: 5},
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{other_field: 0, count: 5},
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{int_field: null, count: 5},
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{other_field: null, count: 5},
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{int_field: null, other_field: null, count: 5},
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{int_field: 0, count: 1}
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]));
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// Test that the compound key with the mix of missing and null field works correctly.
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res = coll.aggregate([
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{
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$setWindowFields: {
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partitionBy: {int_field: "$int_field", other_field: "$other_field"},
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output: {count: {$sum: 1}}
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}
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},
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{$project: {_id: 0}}
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]);
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assert(resultsEq(res.toArray(), [
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{int_field: null, count: 1},
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{int_field: null, other_field: null, count: 2},
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{int_field: null, other_field: null, count: 2},
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{other_field: null, count: 1},
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{int_field: 0, count: 1},
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{other_field: 0, count: 1}
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]));
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})();
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