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// Tests for $out with a non-existing target collection.
(function() {
"use strict";
const st = new ShardingTest({shards: 2, rs: {nodes: 1}});
const mongosDB = st.s0.getDB(jsTestName());
const mongosColl = mongosDB[jsTestName()];
const mongosTargetColl = mongosDB[jsTestName() + "_out"];
function testOut(sourceColl, targetColl, shardedSource) {
jsTestLog("Testing $out to non-existent target collection (source collection sharded : " +
shardedSource + ").");
sourceColl.drop();
targetColl.drop();
if (shardedSource) {
st.shardColl(sourceColl, {_id: 1}, {_id: 0}, {_id: 1}, mongosDB.getName());
}
for (let i = 0; i < 10; i++) {
assert.commandWorked(sourceColl.insert({_id: i}));
}
// Test the behavior for each of the $out modes. Since the target collection does not exist,
// the behavior should be identical.
["insertDocuments", "replaceDocuments", "replaceCollection"].forEach(mode => {
targetColl.drop();
sourceColl.aggregate([{$out: {to: targetColl.getName(), mode: mode}}]);
assert.eq(10, targetColl.find().itcount());
});
// Test with legacy syntax, which should behave identical to mode "replaceCollection".
targetColl.drop();
sourceColl.aggregate([{$out: targetColl.getName()}]);
assert.eq(10, targetColl.find().itcount());
}
//
// Test with unsharded source collection to a non-existent target collection.
//
testOut(mongosColl, mongosTargetColl, false);
//
// Test with sharded source collection to a non-existent target collection.
//
testOut(mongosColl, mongosTargetColl, true);
st.stop();
}());
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