// SERVER-16498 d_migrate.cpp should not rely on system.namespaces
//
// This test creates a sharded collection with wiredtiger options.
// When the chunks of this collection get migrated to the other shard,
// the other shard should create the collection with the same options.
// However, before SERVER-16498, the receiver relies on checking
// system.namespaces on the donor, which is empty on wiredtiger.
// As a result, the new collection created on receiver has different
// options.
//
// P.S. wiredtiger options are not valid for MMAPv1, but MMAPv1 will
// keep and ignore them.

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

var db = st.s.getDB("test");
var coll = db.sharding_system_namespaces;

// This test relies on the wiredTiger storage engine being compiled
// into the server. Must check shard member for WT as it is not built into mongos.

var storageEngines = st.shard0.getDB("local").serverBuildInfo().storageEngines;

print("Supported storage engines: " + storageEngines);

if (Array.contains(storageEngines, "wiredTiger")) {
    function checkCollectionOptions(database) {
        var collectionsInfos = database.getCollectionInfos();
        printjson(collectionsInfos);
        var info = collectionsInfos.filter(function(c) {
            return c.name == "sharding_system_namespaces";
        })[0];
        assert.eq(info.options.storageEngine.wiredTiger.configString, "block_compressor=zlib");
    }

    db.createCollection("sharding_system_namespaces",
                        {storageEngine: {wiredTiger: {configString: "block_compressor=zlib"}}});

    checkCollectionOptions(db);

    assert.commandWorked(db.adminCommand({enableSharding: 'test'}));
    st.ensurePrimaryShard('test', 'shard0001');
    assert.commandWorked(db.adminCommand({shardCollection: coll + '', key: {x: 1}}));

    coll.insert({x: 0});
    coll.insert({x: 10});

    assert.commandWorked(db.adminCommand({split: coll + '', middle: {x: 5}}));

    st.printShardingStatus();

    var primaryShard = st.getPrimaryShard("test");
    anotherShard = st.getOther(primaryShard);
    assert.commandWorked(
        db.adminCommand({movechunk: coll + '', find: {x: 5}, to: anotherShard.name}));

    st.printShardingStatus();

    checkCollectionOptions(anotherShard.getDB("test"));
} else {
    print("Skipping test. wiredTiger engine not supported by mongod binary.");
}