adds passing tests

tests/DashboardTest.php

@@ -0,0 +1,77 @@
+<?php
+
+namespace Tests;
+
+use Tests\TestCase;
+use App\Models\User;
+use App\Models\Holding;
+use App\Models\Portfolio;
+use App\Models\Transaction;
+use Illuminate\Foundation\Testing\RefreshDatabase;
+
+class DashboardTest extends TestCase
+{
+    use RefreshDatabase;
+
+    /**
+     */
+    public function test_user_has_portfolios(): void
+    {
+        $user = User::factory()->create();
+        $this->actingAs($user);
+
+        Portfolio::factory(5)->create();
+
+        $this->assertCount(5, $user->portfolios);
+    }
+
+    /**
+     */
+    public function test_user_has_transactions(): void
+    {
+        $user = User::factory()->create();
+        $this->actingAs($user);
+
+        Transaction::factory(10)->create();
+
+        $this->assertCount(10, $user->transactions);
+    }
+
+    /**
+     */
+    public function test_user_has_holdings(): void
+    {
+        $user = User::factory()->create();
+        $this->actingAs($user);
+
+        $portfolio = Portfolio::factory()->create();
+
+        Transaction::factory(5)->symbol('AAPL')->portfolio($portfolio->id)->create();
+
+        $this->assertCount(1, $user->holdings);
+    }
+
+    /**
+     */
+    public function test_user_has_dashboard_metrics(): void
+    {
+        $user = User::factory()->create();
+        $this->actingAs($user);
+
+        $portfolio = Portfolio::factory()->create();
+
+        Transaction::factory(5)->buy()->portfolio($portfolio->id)->symbol('AAPL')->create();
+        $transaction = Transaction::factory()->sell()->portfolio($portfolio->id)->symbol('AAPL')->create();
+
+        $metrics = Holding::query()
+                    ->myHoldings()
+                    ->withPortfolioMetrics()
+                    ->first();
+    
+        $this->assertEqualsWithDelta(
+            $transaction->sale_price - $transaction->cost_basis, 
+            $metrics->realized_gain_dollars,
+            0.01
+        );
+    }
+}