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(function() {
var s = new ShardingTest({name: "presplit", shards: 2, mongos: 1, other: {chunkSize: 1}});
s.adminCommand({enablesharding: "test"});
s.ensurePrimaryShard('test', 'shard0001');
// Insert enough data in 'test.foo' to fill several chunks, if it was sharded.
bigString = "";
while (bigString.length < 10000) {
bigString += "asdasdasdasdadasdasdasdasdasdasdasdasda";
}
db = s.getDB("test");
inserted = 0;
num = 0;
var bulk = db.foo.initializeUnorderedBulkOp();
while (inserted < (20 * 1024 * 1024)) {
bulk.insert({_id: num++, s: bigString});
inserted += bigString.length;
}
assert.writeOK(bulk.execute());
// Make sure that there's only one chunk holding all the data.
s.printChunks();
primary = s.getPrimaryShard("test").getDB("test");
assert.eq(0, s.config.chunks.count(), "single chunk assertion");
assert.eq(num, primary.foo.count());
s.adminCommand({shardcollection: "test.foo", key: {_id: 1}});
// Make sure the collection's original chunk got split
s.printChunks();
assert.lt(20, s.config.chunks.count(), "many chunks assertion");
assert.eq(num, primary.foo.count());
s.printChangeLog();
s.stop();
})();
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