/**
 * Tests the resetError logic when the bulk api enforces the write concern for unordered
 * writes. The tests indirectly checks whether resetError was called by inspecting the
 * response of the getLastError command after executing the bulk ops.
 *
 */

(function() {
"use strict";
const coll = db.bulk_legacy_enforce_gle;

/**
 * Inserts 'doc' into the collection, asserting that the write succeeds. This runs a
 * getLastError if the insert does not return a response.
 */
function insertDocument(doc) {
    let res = coll.insert(doc);
    if (res) {
        assert.commandWorked(res);
    } else {
        assert.gleOK(db.runCommand({getLastError: 1}));
    }
}

coll.drop();
let bulk = coll.initializeUnorderedBulkOp();
bulk.find({_id: 1}).upsert().updateOne({_id: 1});
assert.commandWorked(bulk.execute());
let gle = assert.gleOK(db.runCommand({getLastError: 1}));
assert.eq(1, gle.n, tojson(gle));

// Batch of size 1 should not call resetError even when it errors out.
assert(coll.drop());
insertDocument({_id: 1});
bulk = coll.initializeUnorderedBulkOp();
bulk.find({none: 1}).upsert().updateOne({_id: 1});
assert.throws(function() {
    bulk.execute();
});

gle = db.runCommand({getLastError: 1});
assert(gle.ok, tojson(gle));
assert.neq(null, gle.err, tojson(gle));

// Batch with all error except last should not call resetError.
assert(coll.drop());
insertDocument({_id: 1});
bulk = coll.initializeUnorderedBulkOp();
bulk.find({none: 1}).upsert().updateOne({_id: 1});
bulk.find({none: 1}).upsert().updateOne({_id: 1});
bulk.find({_id: 0}).upsert().updateOne({_id: 0});
let res = assert.throws(function() {
    bulk.execute();
});
assert.eq(2, res.getWriteErrors().length);

gle = db.runCommand({getLastError: 1});
assert(gle.ok, tojson(gle));
assert.eq(1, gle.n, tojson(gle));

// Batch with error at middle should not call resetError.
assert(coll.drop());
insertDocument({_id: 1});
bulk = coll.initializeUnorderedBulkOp();
bulk.find({_id: 0}).upsert().updateOne({_id: 0});
bulk.find({none: 1}).upsert().updateOne({_id: 1});
bulk.find({_id: 2}).upsert().updateOne({_id: 2});
res = assert.throws(function() {
    bulk.execute();
});
assert.eq(1, res.getWriteErrors().length);

gle = db.runCommand({getLastError: 1});
assert(gle.ok, tojson(gle));
// For legacy writes, mongos sends the bulk as one while the shell sends the write individually.
assert.gte(gle.n, 1, tojson(gle));

// Batch with error at last should call resetError.
assert(coll.drop());
insertDocument({_id: 2});
bulk = coll.initializeUnorderedBulkOp();
bulk.find({_id: 0}).upsert().updateOne({_id: 0});
bulk.find({_id: 1}).upsert().updateOne({_id: 1});
bulk.find({none: 1}).upsert().updateOne({_id: 2});
res = assert.throws(function() {
    bulk.execute();
});
assert.eq(1, res.getWriteErrors().length);

gle = db.runCommand({getLastError: 1});
assert(gle.ok, tojson(gle));
assert.eq(0, gle.n, tojson(gle));

// Batch with error at last should not call resetError if { w: 1 }.
assert(coll.drop());
insertDocument({_id: 2});
bulk = coll.initializeUnorderedBulkOp();
bulk.find({_id: 0}).upsert().updateOne({_id: 0});
bulk.find({_id: 1}).upsert().updateOne({_id: 1});
bulk.find({none: 1}).upsert().updateOne({_id: 2});
res = assert.throws(function() {
    bulk.execute();
});
assert.eq(1, res.getWriteErrors().length);

gle = db.runCommand({getLastError: 1, w: 1});
assert(gle.ok, tojson(gle));
assert.neq(null, gle.err, tojson(gle));

// Batch with error at last should not call resetError if { w: 0 }.
assert(coll.drop());
insertDocument({_id: 2});
bulk = coll.initializeUnorderedBulkOp();
bulk.find({_id: 0}).upsert().updateOne({_id: 0});
bulk.find({_id: 1}).upsert().updateOne({_id: 1});
bulk.find({none: 1}).upsert().updateOne({_id: 2});
res = assert.throws(function() {
    bulk.execute();
});
assert.eq(1, res.getWriteErrors().length, () => tojson(res));

gle = db.runCommand({getLastError: 1, w: 0});
assert(gle.ok, tojson(gle));
assert.neq(null, gle.err, tojson(gle));
}());