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/**
* Test that $min/max works as a window function.
*/
(function() {
"use strict";
load("jstests/aggregation/extras/window_function_helpers.js");
const coll = db[jsTestName()];
coll.drop();
// Create a collection of tickers and prices.
const nDocsPerTicker = 10;
seedWithTickerData(coll, nDocsPerTicker);
// Run the suite of partition and bounds tests against the $min function.
testAccumAgainstGroup(coll, "$min");
// Run the suite of partition and bounds tests against the $max function.
testAccumAgainstGroup(coll, "$max");
// Test the behavior of min/max over a non-numeric field. Note that $min and $max order values by
// type per the BSON spec, so there will always be a value to return.
let results =
coll.aggregate([
{$addFields: {str: "hiya"}},
{
$setWindowFields: {
sortBy: {ts: 1},
output: {
minStr: {$min: "$str", window: {documents: ["unbounded", "current"]}},
maxStr: {$max: "$str", window: {documents: ["unbounded", "current"]}},
}
}
}
])
.toArray();
for (let index = 0; index < results.length; index++) {
assert.eq("hiya", results[index].minStr);
assert.eq("hiya", results[index].maxStr);
}
})();
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