whisper-money/tests/Feature/Services/RealEstateBalanceGeneratorS...

325 lines
10 KiB
PHP

<?php
use App\Models\Account;
use App\Models\User;
use App\Services\RealEstateBalanceGeneratorService;
use Carbon\Carbon;
beforeEach(function () {
$this->user = User::factory()->onboarded()->create();
$this->service = app(RealEstateBalanceGeneratorService::class);
});
it('generates a long series across multiple upsert batches without gaps or duplicates', function () {
$this->travelTo(Carbon::parse('2026-06-15'));
$account = Account::factory()->realEstate()->create([
'user_id' => $this->user->id,
]);
// ~46 years of monthly points is well over the internal upsert batch size,
// so this drives the chunked build/upsert path that stops the queue worker
// from exhausting memory on an ancient purchase date (PHP-LARAVEL-49).
$this->service->generateHistoricalBalances(
$account,
purchasePrice: 10000000,
purchaseDate: Carbon::parse('1980-01-15'),
currentValue: 16000000,
);
$balances = $account->balances()->orderBy('balance_date')->get();
$dates = $balances->pluck('balance_date')->map->toDateString();
// Enough points to span more than one batch...
expect($balances->count())->toBeGreaterThan(500);
// ...and the batch boundaries must not drop or duplicate any date.
expect($dates->unique()->count())->toBe($balances->count());
// Endpoints stay anchored across the batched writes.
expect($dates->first())->toBe('1980-01-15');
expect($balances->first()->balance)->toBe(10000000);
expect($dates->last())->toBe('2026-06-15');
expect($balances->last()->balance)->toBe(16000000);
});
it('generates linearly interpolated balances from purchase date to today', function () {
$this->travelTo(Carbon::parse('2026-03-15'));
$account = Account::factory()->realEstate()->create([
'user_id' => $this->user->id,
]);
$this->service->generateHistoricalBalances(
$account,
purchasePrice: 20000000, // 200,000.00
purchaseDate: Carbon::parse('2025-11-15'),
currentValue: 24000000, // 240,000.00
);
$balances = $account->balances()->orderBy('balance_date')->get();
// purchase date + Dec 1 + Jan 1 + Feb 1 + Mar 1 + today (Mar 15) = 6
expect($balances)->toHaveCount(6);
// First = purchase price
expect($balances->first()->balance_date->toDateString())->toBe('2025-11-15');
expect($balances->first()->balance)->toBe(20000000);
// Last = current value
expect($balances->last()->balance_date->toDateString())->toBe('2026-03-15');
expect($balances->last()->balance)->toBe(24000000);
// Values should strictly increase (since current > purchase)
for ($i = 1; $i < $balances->count(); $i++) {
expect($balances[$i]->balance)->toBeGreaterThanOrEqual($balances[$i - 1]->balance);
}
});
it('creates a single balance when purchase date is today', function () {
$account = Account::factory()->realEstate()->create([
'user_id' => $this->user->id,
]);
$this->service->generateHistoricalBalances(
$account,
purchasePrice: 30000000,
purchaseDate: Carbon::today(),
currentValue: 30000000,
);
$balances = $account->balances;
expect($balances)->toHaveCount(1);
expect($balances->first()->balance)->toBe(30000000);
expect($balances->first()->balance_date->toDateString())->toBe(now()->toDateString());
});
it('generates flat balances when purchase price equals current value', function () {
$this->travelTo(Carbon::parse('2026-06-01'));
$account = Account::factory()->realEstate()->create([
'user_id' => $this->user->id,
]);
$this->service->generateHistoricalBalances(
$account,
purchasePrice: 50000000,
purchaseDate: Carbon::parse('2026-01-01'),
currentValue: 50000000,
);
$balances = $account->balances;
foreach ($balances as $balance) {
expect($balance->balance)->toBe(50000000);
}
});
it('does not create balances when purchase date is in the future', function () {
$account = Account::factory()->realEstate()->create([
'user_id' => $this->user->id,
]);
$this->service->generateHistoricalBalances(
$account,
purchasePrice: 20000000,
purchaseDate: Carbon::today()->addMonth(),
currentValue: 20000000,
);
expect($account->balances)->toHaveCount(0);
});
it('uses updateOrCreate to avoid duplicate balance dates', function () {
$this->travelTo(Carbon::parse('2026-03-15'));
$account = Account::factory()->realEstate()->create([
'user_id' => $this->user->id,
]);
// Create an existing balance for today
$account->balances()->create([
'balance_date' => '2026-03-15',
'balance' => 99999999,
]);
$this->service->generateHistoricalBalances(
$account,
purchasePrice: 20000000,
purchaseDate: Carbon::parse('2026-02-01'),
currentValue: 24000000,
);
// Today's balance should be updated, not duplicated
$todayBalances = $account->balances()->where('balance_date', '2026-03-15')->get();
expect($todayBalances)->toHaveCount(1);
expect($todayBalances->first()->balance)->toBe(24000000);
});
it('handles depreciation (current value less than purchase price)', function () {
$this->travelTo(Carbon::parse('2026-06-01'));
$account = Account::factory()->realEstate()->create([
'user_id' => $this->user->id,
]);
$this->service->generateHistoricalBalances(
$account,
purchasePrice: 30000000,
purchaseDate: Carbon::parse('2026-01-01'),
currentValue: 27000000,
);
$balances = $account->balances()->orderBy('balance_date')->get();
// First = purchase price, last = current (lower)
expect($balances->first()->balance)->toBe(30000000);
expect($balances->last()->balance)->toBe(27000000);
// Values should decrease
for ($i = 1; $i < $balances->count(); $i++) {
expect($balances[$i]->balance)->toBeLessThanOrEqual($balances[$i - 1]->balance);
}
});
it('places intermediate balances on the 1st of each month', function () {
$this->travelTo(Carbon::parse('2026-04-20'));
$account = Account::factory()->realEstate()->create([
'user_id' => $this->user->id,
]);
$this->service->generateHistoricalBalances(
$account,
purchasePrice: 10000000,
purchaseDate: Carbon::parse('2026-01-15'),
currentValue: 12000000,
);
$balances = $account->balances()->orderBy('balance_date')->get();
$dates = $balances->pluck('balance_date')->map->toDateString()->toArray();
expect($dates)->toBe([
'2026-01-15', // purchase date
'2026-02-01', // 1st of month
'2026-03-01', // 1st of month
'2026-04-01', // 1st of month
'2026-04-20', // today
]);
});
it('generates only balances within a from/to date range', function () {
$this->travelTo(Carbon::parse('2026-06-15'));
$account = Account::factory()->realEstate()->create([
'user_id' => $this->user->id,
]);
// Purchase was Jan 15, today is Jun 15 — but only generate Mar 1 to Jun 15
$this->service->generateHistoricalBalances(
$account,
purchasePrice: 10000000,
purchaseDate: Carbon::parse('2026-01-15'),
currentValue: 16000000,
from: Carbon::parse('2026-03-01'),
);
$balances = $account->balances()->orderBy('balance_date')->get();
$dates = $balances->pluck('balance_date')->map->toDateString()->toArray();
// Should only include dates from Mar 1 onward (no purchase date, no Feb 1)
expect($dates)->toBe([
'2026-03-01',
'2026-04-01',
'2026-05-01',
'2026-06-01',
'2026-06-15', // today
]);
// Interpolation should still be based on the full timeline (Jan 15 to Jun 15 = 151 days)
$totalDays = 151;
// Mar 1: 45 days elapsed from Jan 15
expect($balances[0]->balance)->toBe((int) round(10000000 + 6000000 * (45 / $totalDays)));
// Today (Jun 15) should be the current value
expect($balances->last()->balance)->toBe(16000000);
});
it('generates only balances within a from/to range excluding today', function () {
$this->travelTo(Carbon::parse('2026-06-15'));
$account = Account::factory()->realEstate()->create([
'user_id' => $this->user->id,
]);
// Generate only the older portion: purchase date to Feb 28
$this->service->generateHistoricalBalances(
$account,
purchasePrice: 10000000,
purchaseDate: Carbon::parse('2026-01-15'),
currentValue: 16000000,
from: Carbon::parse('2026-01-15'),
to: Carbon::parse('2026-02-28'),
);
$balances = $account->balances()->orderBy('balance_date')->get();
$dates = $balances->pluck('balance_date')->map->toDateString()->toArray();
expect($dates)->toBe([
'2026-01-15', // purchase date
'2026-02-01', // 1st of month
]);
// Purchase date should be purchase price
expect($balances[0]->balance)->toBe(10000000);
});
it('combines two ranged calls to produce the same result as a full generation', function () {
$this->travelTo(Carbon::parse('2026-06-15'));
// Generate full range on one account
$fullAccount = Account::factory()->realEstate()->create([
'user_id' => $this->user->id,
]);
$this->service->generateHistoricalBalances(
$fullAccount,
purchasePrice: 10000000,
purchaseDate: Carbon::parse('2026-01-15'),
currentValue: 16000000,
);
// Generate split ranges on another account
$splitAccount = Account::factory()->realEstate()->create([
'user_id' => $this->user->id,
]);
$splitPoint = Carbon::parse('2026-03-01');
$this->service->generateHistoricalBalances(
$splitAccount,
purchasePrice: 10000000,
purchaseDate: Carbon::parse('2026-01-15'),
currentValue: 16000000,
from: Carbon::parse('2026-01-15'),
to: $splitPoint->copy()->subDay(),
);
$this->service->generateHistoricalBalances(
$splitAccount,
purchasePrice: 10000000,
purchaseDate: Carbon::parse('2026-01-15'),
currentValue: 16000000,
from: $splitPoint,
);
$fullBalances = $fullAccount->balances()->orderBy('balance_date')->get();
$splitBalances = $splitAccount->balances()->orderBy('balance_date')->get();
expect($splitBalances->pluck('balance_date')->map->toDateString()->toArray())
->toBe($fullBalances->pluck('balance_date')->map->toDateString()->toArray());
expect($splitBalances->pluck('balance')->toArray())
->toBe($fullBalances->pluck('balance')->toArray());
});