var UpsertTestModel = sequelize.define(
    "UpsertTest",
    {
        testKey: {
            type: Sequelize.INTEGER,
            primaryKey: true,
            field: "test_key"
        },
        value: {
            type: Sequelize.INTEGER
        }
    },
    {
        tableName: "upsert_test"
    }
).sync({ force: true });

UpsertTestModel.then(model => {
    return model.upsert({
        testKey: 1,
        value: 1
    }).then(() => {
        return model.upsert({
            testKey: 2,
            value: 1
        });
    }).then(() => {
        return model.upsert({
            testKey: 2,
            value: 2
        });
    });
}).done();