/**
 * Test that migration should fail if the destination shard does not
 * have the index and is not empty.
 */

var st = new ShardingTest({ shards: 2 });

var testDB = st.s.getDB('test');

testDB.adminCommand({ enableSharding: 'test' });
testDB.adminCommand({ movePrimary: 'test', to: 'shard0001' });
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.ensureIndex({ 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: 'shard0000' }));

// Drop index since last moveChunk created this.
st.d0.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: 'shard0000' }));

// Drop index since last moveChunk created this.
st.d0.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: 'shard0000' }));

st.stop();
