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/**
* Test that migration should fail if the destination shard does not
* have the index and is not empty.
*/
// This test runs dropIndex on one of the shards.
TestData.skipCheckingIndexesConsistentAcrossCluster = true;
var st = new ShardingTest({shards: 2});
var testDB = st.s.getDB('test');
testDB.adminCommand({enableSharding: 'test'});
st.ensurePrimaryShard(testDB.toString(), st.shard1.shardName);
testDB.adminCommand({shardCollection: 'test.user', key: {x: 1}});
// Test procedure:
// 1. Create index (index should now be in primary shard).
// 2. Split chunk into 3 parts.
// 3. Move 1 chunk to 2nd shard - should have no issues
testDB.user.createIndex({a: 1, b: 1});
testDB.adminCommand({split: 'test.user', middle: {x: 0}});
testDB.adminCommand({split: 'test.user', middle: {x: 10}});
// Collection does not exist, no chunk, index missing case at destination case.
assert.commandWorked(
testDB.adminCommand({moveChunk: 'test.user', find: {x: 0}, to: st.shard0.shardName}));
// Drop index since last moveChunk created this.
st.rs0.getPrimary().getDB('test').user.dropIndex({a: 1, b: 1});
// Collection exist but empty, index missing at destination case.
assert.commandWorked(
testDB.adminCommand({moveChunk: 'test.user', find: {x: 10}, to: st.shard0.shardName}));
// Drop index since last moveChunk created this.
st.rs0.getPrimary().getDB('test').user.dropIndex({a: 1, b: 1});
// Collection not empty, index missing at destination case.
testDB.user.insert({x: 10});
assert.commandFailed(
testDB.adminCommand({moveChunk: 'test.user', find: {x: -10}, to: st.shard0.shardName}));
st.stop();
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