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/**
* Basic integration tests for addShardToZone command. More detailed tests can be found
* in sharding_catalog_add_shard_to_zone_test.cpp.
*/
(function() {
'use strict';
let st = new ShardingTest({shards: 1});
let mongos = st.s0;
let config = mongos.getDB('config');
var shardName = st.shard0.shardName;
// Test adding shard with no zone to a new zone.
assert.commandWorked(mongos.adminCommand({addShardToZone: shardName, zone: 'x'}));
var shardDoc = config.shards.findOne();
assert.eq(['x'], shardDoc.tags);
// Test adding zone to a shard with existing zones.
assert.commandWorked(mongos.adminCommand({addShardToZone: shardName, zone: 'y'}));
shardDoc = config.shards.findOne();
assert.eq(['x', 'y'], shardDoc.tags);
// Test removing shard from existing zone.
assert.commandWorked(mongos.adminCommand({removeShardFromZone: shardName, zone: 'x'}));
shardDoc = config.shards.findOne();
assert.eq(['y'], shardDoc.tags);
// Test removing shard from zone that no longer exists.
assert.commandWorked(mongos.adminCommand({removeShardFromZone: shardName, zone: 'x'}));
shardDoc = config.shards.findOne();
assert.eq(['y'], shardDoc.tags);
// Test removing the last zone from a shard
assert.commandWorked(mongos.adminCommand({removeShardFromZone: shardName, zone: 'y'}));
shardDoc = config.shards.findOne();
assert.eq([], shardDoc.tags);
st.stop();
})();
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