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// Verifies that snapshot readConcern on mongos is not gated by the enableTestCommands flag.
//
// @tags: [requires_sharding]
(function() {
"use strict";
const dbName = "test";
const collName = "coll";
// Runs multiple commands with read concern level "snapshot" in a session,
// expecting success.
function expectSnapshotReadConcernIsSupported() {
const st = new ShardingTest({shards: 1, config: 1});
const session = st.s.startSession({causalConsistency: false});
let txnNumber = 0;
assert.commandWorked(session.getDatabase(dbName).runCommand({
find: collName,
readConcern: {level: "snapshot"},
txnNumber: NumberLong(txnNumber++),
startTransaction: true,
autocommit: false
}));
assert.commandWorked(session.getDatabase(dbName).runCommand({
aggregate: collName,
pipeline: [],
cursor: {},
readConcern: {level: "snapshot"},
txnNumber: NumberLong(txnNumber++),
startTransaction: true,
autocommit: false
}));
session.endSession();
st.stop();
}
// Snapshot readConcern should succeed when 'enableTestCommands' is set to false.
jsTest.setOption("enableTestCommands", false);
expectSnapshotReadConcernIsSupported();
// Snapshot readConcern should succeed when 'enableTestCommands' is set to true.
jsTest.setOption("enableTestCommands", true);
expectSnapshotReadConcernIsSupported();
}());
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