diff --git a/app/Models/BonusScore.php b/app/Models/BonusScore.php
index 0423629..0a58cd5 100644
--- a/app/Models/BonusScore.php
+++ b/app/Models/BonusScore.php
@@ -2,11 +2,14 @@
 
 namespace App\Models;
 
+use Illuminate\Database\Eloquent\Factories\HasFactory;
 use Illuminate\Database\Eloquent\Model;
 use Illuminate\Database\Eloquent\Relations\BelongsTo;
 
 class BonusScore extends Model
 {
+    use hasFactory;
+
     protected $guarded = [];
 
     public function entry(): BelongsTo
diff --git a/app/Observers/BonusScoreObserver.php b/app/Observers/BonusScoreObserver.php
index 79878fd..10cc620 100644
--- a/app/Observers/BonusScoreObserver.php
+++ b/app/Observers/BonusScoreObserver.php
@@ -33,20 +33,4 @@ class BonusScoreObserver
         $calculator = app(TotalEntryScores::class);
         $calculator($bonusScore->entry, true);
     }
-
-    /**
-     * Handle the ScoreSheet "restored" event.
-     */
-    public function restored(BonusScore $bonusScore): void
-    {
-        //
-    }
-
-    /**
-     * Handle the ScoreSheet "force deleted" event.
-     */
-    public function forceDeleted(BonusScore $bonusScore): void
-    {
-        //
-    }
 }
diff --git a/database/factories/BonusScoreFactory.php b/database/factories/BonusScoreFactory.php
new file mode 100644
index 0000000..c984fb6
--- /dev/null
+++ b/database/factories/BonusScoreFactory.php
@@ -0,0 +1,36 @@
+<?php
+
+namespace Database\Factories;
+
+use App\Models\BonusScore;
+use App\Models\Entry;
+use App\Models\User;
+use Illuminate\Database\Eloquent\Factories\Factory;
+use Illuminate\Support\Carbon;
+
+class BonusScoreFactory extends Factory
+{
+    protected $model = BonusScore::class;
+
+    public function definition(): array
+    {
+        return [
+            'score' => $this->faker->randomNumber(),
+            'created_at' => Carbon::now(),
+            'updated_at' => Carbon::now(),
+
+            'entry_id' => Entry::factory(),
+            'user_id' => User::factory(),
+            'originally_scored_entry' => Entry::factory(),
+        ];
+    }
+
+    public function forEntry(Entry $entry): self
+    {
+        return $this->state(function (array $attributes) use ($entry) {
+            return [
+                'entry_id' => $entry->id,
+            ];
+        });
+    }
+}
diff --git a/tests/Feature/app/Observers/BonusScoreObserverTest.php b/tests/Feature/app/Observers/BonusScoreObserverTest.php
new file mode 100644
index 0000000..6d9a1e9
--- /dev/null
+++ b/tests/Feature/app/Observers/BonusScoreObserverTest.php
@@ -0,0 +1,60 @@
+<?php
+
+use App\Actions\Tabulation\TotalEntryScores;
+use App\Models\BonusScore;
+use App\Models\Entry;
+use App\Models\User;
+use Illuminate\Foundation\Testing\RefreshDatabase;
+
+uses(RefreshDatabase::class);
+
+beforeEach(function () {
+    $this->mock = Mockery::mock(TotalEntryScores::class);
+    app()->instance(TotalEntryScores::class, $this->mock);
+});
+
+it('recalculates total scores when bonus score is created', function () {
+    $entry = Entry::factory()->create();
+
+    $this->mock->shouldReceive('__invoke')
+        ->once()
+        ->withAnyArgs()
+        ->andReturn(null);
+
+    BonusScore::factory()
+        ->forEntry($entry)
+        ->create();
+
+});
+
+it('recalculates total scores when bonus score is updated', function () {
+    $this->mock->shouldReceive('__invoke')
+        ->once()
+        ->withAnyArgs()
+        ->andReturn(null);
+    $bonusScore = BonusScore::factory()->create();
+
+    $this->mock->shouldReceive('__invoke')
+        ->once()
+        ->withAnyArgs()
+        ->andReturn(null);
+
+    $bonusScore->update(['score' => 95]);
+});
+
+it('recalculates total scores when bonus score is deleted', function () {
+    DB::table('bonus_scores')->insert([
+        'entry_id' => Entry::factory()->create()->id,
+        'user_id' => User::factory()->create()->id,
+        'originally_scored_entry' => Entry::factory()->create()->id,
+        'score' => 28,
+    ]);
+    $bonusScore = BonusScore::first();
+
+    $this->mock->shouldReceive('__invoke')
+        ->once()
+        ->withAnyArgs()
+        ->andReturn(null);
+
+    $bonusScore->delete();
+});