Write better Laravel tests 2

7.php

<?php 

class LoanTest extends TestCase
{
    use DatabaseMigrations;

    public function test_can_log_a_loan()
    {
        $user = factory(User::class)->create();
        $wallet = factory(Wallet::class)->create([
            'user_id' => $user->id
        ]);

        $this->passportAs($user)
            ->post('api/loans', [
                'total' => 1000,
                'payoff_at' => Carbon::today()->addYear(),
                'wallet_id' => $wallet->id,
            ])
            ->assertSuccessful()
            ->assertJsonStructure([
                'id',
                'total',
                'payoff_at',
            ]);

        $loan = Loan::find(1);
        $this->assertEquals(1000, $loan->total);
        $this->assertEquals($user->id, $loan->user_id);
        $this->assertEquals(Carbon::today()->addYear(), $loan->payoff_at);

        /** @var Transaction $transaction */
        $transaction = $loan->transaction;
        $this->assertInstanceOf(Transaction::class, $transaction);
        $this->assertEquals($loan->id, $transaction->causedby->id);
        $this->assertEquals($loan->total, $transaction->amount);
        $this->assertEquals($user->id, $transaction->user_id);
        $this->assertEquals(1000, $wallet->balance());

        /** @var Goal $goal */
        $goal = $loan->goal;
        $this->assertInstanceOf(Goal::class, $goal);
        $this->assertEquals($goal->total, $loan->total);
        $this->assertEquals($goal->user_id, $loan->user_id);
        $this->assertEquals($goal->due_date, $loan->payoff_at);
    }
}