firefly-iii/database/factories/ModelFactory.php

<?php
/**
 * ModelFactory.php
 * Copyright (C) 2016 thegrumpydictator@gmail.com
 *
 * This software may be modified and distributed under the terms of the
 * Creative Commons Attribution-ShareAlike 4.0 International License.
 *
 * See the LICENSE file for details.
 */
declare(strict_types = 1);

/*
|--------------------------------------------------------------------------
| Model Factories
|--------------------------------------------------------------------------
|
| Here you may define all of your model factories. Model factories give
| you a convenient way to create models for testing and seeding your
| database. Just tell the factory how a default model should look.
|
*/

$factory->define(
    FireflyIII\User::class, function (Faker\Generator $faker) {
    static $password;

    return [
        'email'          => $faker->safeEmail,
        'password'       => $password ?: $password = bcrypt('secret'),
        'remember_token' => str_random(10),
    ];
}
);

$factory->define(
    FireflyIII\Models\Transaction::class, function (Faker\Generator $faker) {
    return [
        'transaction_amount'       => strval($faker->randomFloat(2, -100, 100)),
        'destination_amount'       => strval($faker->randomFloat(2, -100, 100)),
        'opposing_account_id'      => $faker->numberBetween(1, 10),
        'source_account_id'        => $faker->numberBetween(1, 10),
        'opposing_account_name'    => $faker->words(3, true),
        'description'              => $faker->words(3, true),
        'source_account_name'      => $faker->words(3, true),
        'destination_account_id'   => $faker->numberBetween(1, 10),
        'destination_account_name' => $faker->words(3, true),
        'amount'                   => strval($faker->randomFloat(2, -100, 100)),
        'budget_id'                => 0,
        'category'                 => $faker->words(3, true),
    ];
}
);