diff --git a/tests/Feature/Livewire/Studio/Master/FormulaTest.php b/tests/Feature/Livewire/Studio/Master/FormulaTest.php
new file mode 100644
index 0000000..dbd4ce4
--- /dev/null
+++ b/tests/Feature/Livewire/Studio/Master/FormulaTest.php
@@ -0,0 +1,102 @@
+<?php
+
+use App\Livewire\Studio\Master\Formula as FormulaComponent;
+use App\Models\Bottle;
+use App\Models\Formula;
+use App\Models\User;
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Livewire\Livewire;
+use Spatie\Permission\Models\Permission;
+
+uses(RefreshDatabase::class);
+
+beforeEach(function () {
+    $this->user = User::factory()->create();
+    Bottle::factory()->count(3)->create();
+    Formula::factory()->count(3)->create();
+});
+
+function mountFormulaComponent(User $user)
+{
+    return Livewire::actingAs($user)->test(FormulaComponent::class);
+}
+
+it('renders formula page successfully', function () {
+    mountFormulaComponent($this->user)
+        ->assertViewIs('livewire.studio.master.formulas')
+        ->assertViewHas('pageTitle', 'Rumus');
+});
+
+it('mounts formulas and sizes correctly', function () {
+    $component = mountFormulaComponent($this->user);
+
+    expect($component->formulas)->toHaveCount(3);
+    expect($component->sizes)->toHaveCount(Bottle::count());
+});
+
+it('prevents creating formula when unauthorized', function () {
+    Formula::factory()->raw();
+    mountFormulaComponent($this->user)
+        ->call('create')
+        ->assertForbidden();
+});
+
+it('creates formula successfully when authorized', function () {
+    $permission = Permission::create(['name' => 'create formula']);
+    $this->user->givePermissionTo($permission);
+
+    $data = Formula::factory()->raw();
+
+    $component = mountFormulaComponent($this->user);
+
+    $component
+        ->set('form.quality', $data['quality'])
+        ->set('form.size', $data['size'])
+        ->set('form.volume', $data['volume'])
+        ->call('create')
+        ->assertHasNoErrors();
+
+    $this->assertDatabaseHas('formulas', [
+        'quality' => $data['quality'],
+        'size' => $data['size'],
+        'volume' => $data['volume'],
+    ]);
+
+    expect($component->formulas[$data['size']][0]['quality'])->toBe($data['quality']);
+});
+
+it('updates formula successfully when authorized', function () {
+    $permission = Permission::create(['name' => 'update formula']);
+    $this->user->givePermissionTo($permission);
+
+    $formulaToEdit = Formula::factory()->create();
+
+    $data = Formula::factory()->raw();
+
+    $component = mountFormulaComponent($this->user);
+
+    $component
+        ->set('form.quality', $data['quality'])
+        ->set('form.size', $data['size'])
+        ->set('form.volume', $data['volume'])
+        ->call('update')
+        ->assertHasNoErrors();
+
+    $formulaToEdit->refresh();
+
+    $this->assertEquals($data['quality'], $formulaToEdit->quality);
+
+    expect($component->formulas[$formulaToEdit->size][0]['quality'])->toBe('Updated Quality');
+});
+
+it('deletes formula successfully', function () {
+    $formula = Formula::factory()->create();
+    $component = mountFormulaComponent($this->user);
+
+    $component->call('delete', $formula)
+        ->assertHasNoErrors();
+
+    $this->assertSoftDeleted('formulas', ['id' => $formula->id]);
+
+    expect($component->formulas[$formula->size] ?? [])->toBeEmpty();
+});