mongo/jstests/core/write_result.js

//
// Tests the behavior of single writes using write commands
//

var coll = db.write_result;
coll.drop();

assert(coll.getDB().getMongo().useWriteCommands(), "test is not running with write commands")

var result = null;

//
// Basic insert
coll.remove({});
printjson( result = coll.insert({ foo : "bar" }) );
assert.eq(result.nInserted, 1);
assert.eq(result.nUpserted, 0);
assert.eq(result.nMatched, 0);
if (coll.getMongo().writeMode() == "commands")
    assert.eq(result.nModified, 0);
assert.eq(result.nRemoved, 0);
assert(!result.getWriteError());
assert(!result.getWriteConcernError());
assert(!result.getUpsertedId());
assert.eq(coll.count(), 1);

//
// Basic upsert (using save)
coll.remove({});
var id = new ObjectId();
printjson( result = coll.save({ _id : id, foo : "bar" }) );
assert.eq(result.nInserted, 0);
assert.eq(result.nUpserted, 1);
assert.eq(result.nMatched, 0);
if (coll.getMongo().writeMode() == "commands")
    assert.eq(result.nModified, 0);
assert.eq(result.nRemoved, 0);
assert(!result.getWriteError());
assert(!result.getWriteConcernError());
assert.eq(result.getUpsertedId()._id, id);
assert.eq(coll.count(), 1);

//
// Basic update
coll.remove({});
coll.insert({ foo : "bar" });
printjson( result = coll.update({ foo : "bar" }, { $set : { foo : "baz" } }) );
assert.eq(result.nInserted, 0);
assert.eq(result.nUpserted, 0);
assert.eq(result.nMatched, 1);
if (coll.getMongo().writeMode() == "commands")
    assert.eq(result.nModified, 1);
assert.eq(result.nRemoved, 0);
assert(!result.getWriteError());
assert(!result.getWriteConcernError());
assert(!result.getUpsertedId());
assert.eq(coll.count(), 1);

//
// Basic multi-update
coll.remove({});
coll.insert({ foo : "bar" });
coll.insert({ foo : "bar", set : ['value'] });
printjson( result = coll.update({ foo : "bar" },
                                { $addToSet : { set : 'value' } },
                                { multi : true }) );
assert.eq(result.nInserted, 0);
assert.eq(result.nUpserted, 0);
assert.eq(result.nMatched, 2);
if (coll.getMongo().writeMode() == "commands")
    assert.eq(result.nModified, 1);
assert.eq(result.nRemoved, 0);
assert(!result.getWriteError());
assert(!result.getWriteConcernError());
assert(!result.getUpsertedId());
assert.eq(coll.count(), 2);

//
// Basic remove
coll.remove({});
coll.insert({ foo : "bar" });
printjson( result = coll.remove({}) );
assert.eq(result.nInserted, 0);
assert.eq(result.nUpserted, 0);
assert.eq(result.nMatched, 0);
if (coll.getMongo().writeMode() == "commands")
    assert.eq(result.nModified, 0);
assert.eq(result.nRemoved, 1);
assert(!result.getWriteError());
assert(!result.getWriteConcernError());
assert(!result.getUpsertedId());
assert.eq(coll.count(), 0);

//
// Insert with error
coll.remove({});
var id = new ObjectId();
coll.insert({ _id : id, foo : "bar" });
printjson( result = coll.insert({ _id : id, foo : "baz" }) );
assert.eq(result.nInserted, 0);
assert(result.getWriteError());
assert(result.getWriteError().errmsg);
assert(!result.getWriteConcernError());
assert.eq(coll.count(), 1);

//
// Update with error
coll.remove({});
coll.insert({ foo : "bar" });
printjson( result = coll.update({ foo : "bar" }, { $invalid : "expr" }) );
assert.eq(result.nUpserted, 0);
assert.eq(result.nMatched, 0);
if (coll.getMongo().writeMode() == "commands")
    assert.eq(0, result.nModified, result);
assert(result.getWriteError());
assert(result.getWriteError().errmsg);
assert(!result.getUpsertedId());
assert.eq(coll.count(), 1);

//
// Multi-update with error
coll.remove({});
var id = new ObjectId();
for (var i = 0; i < 10; ++i) coll.insert({ value : NumberInt(i) });
coll.insert({ value : "not a number" });
// $bit operator fails when the field is not integer
// Note that multi-updates do not currently report partial stats if they fail
printjson( result = coll.update({},
                                { $bit : { value : { and : NumberInt(0) } } },
                                { multi : true }) );
assert.eq(result.nUpserted, 0);
assert.eq(result.nMatched, 0);
if (coll.getMongo().writeMode() == "commands")
    assert.eq(0, result.nModified, result);
assert(result.getWriteError());
assert(result.getWriteError().errmsg);
assert(!result.getUpsertedId());
assert.eq(coll.count(), 11);

//
// Bulk insert
coll.remove({});
printjson( result = coll.insert([{ foo : "bar" }, { foo : "baz" }]) );
assert.eq(result.nInserted, 2);
assert(!result.hasWriteErrors());
assert(!result.hasWriteConcernError());
assert.eq(coll.count(), 2);

//
// Bulk insert with error
coll.remove({});
var id = new ObjectId();
// Second insert fails with duplicate _id
printjson( result = coll.insert([{ _id : id, foo : "bar" },
                                 { _id : id, foo : "baz" }]) );
assert.eq(result.nInserted, 1);
assert(result.hasWriteErrors());
assert(!result.hasWriteConcernError());
assert.eq(coll.count(), 1);

//
// Custom write concern
// (More detailed write concern tests require custom/replicated servers)
coll.remove({});
coll.setWriteConcern({ w : "majority" });
printjson( result = coll.insert({ foo : "bar" }) );
assert.eq(result.nInserted, 1);
assert(!result.getWriteError());
assert(!result.getWriteConcernError());
assert.eq(coll.count(), 1);
coll.unsetWriteConcern();

//
// Write concern error
// NOTE: In a replica set write concern is checked after write
coll.remove({});
var wRes = assert.writeError( coll.insert({ foo : "bar" }, { writeConcern : { w : "invalid" } }) );
var res = assert.commandWorked(db.isMaster());
var replSet = res.hasOwnProperty("setName");
if (!replSet && coll.getMongo().writeMode() == "commands")
    assert.eq(coll.count(), 0, "not-replset || command mode");
else // compatibility, 
    assert.eq(coll.count(), 1, "replset || non-command mode");