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Add comprehensive tests for discount rules functionality
Co-authored-by: iamgergo <6567179+iamgergo@users.noreply.github.com>
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‎database/factories/DiscountRuleFactory.php‎

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<?php
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declare(strict_types=1);
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namespace Cone\Bazar\Database\Factories;
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use Cone\Bazar\Enums\DiscountRuleType;
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use Cone\Bazar\Models\DiscountRule;
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use Illuminate\Database\Eloquent\Factories\Factory;
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class DiscountRuleFactory extends Factory
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{
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/**
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* The name of the factory's corresponding model.
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*
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* @var class-string<\Illuminate\Database\Eloquent\Model>
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*/
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protected $model = DiscountRule::class;
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/**
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* Get the name of the model that is generated by the factory.
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*
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* @return class-string<\Illuminate\Database\Eloquent\Model|TModel>
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*/
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public function modelName(): string
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{
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return $this->model::getProxiedClass();
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}
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/**
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* Define the model's default state.
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*/
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public function definition(): array
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{
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return [
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'active' => true,
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'name' => fake()->words(3, true),
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'rules' => [],
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'stackable' => false,
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'type' => DiscountRuleType::CART,
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];
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}
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}

‎src/Models/DiscountRule.php‎

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namespace Cone\Bazar\Models;
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use Cone\Bazar\Database\Factories\DiscountRuleFactory;
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use Cone\Bazar\Enums\DiscountRuleType;
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use Cone\Bazar\Interfaces\Discountable;
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use Cone\Bazar\Interfaces\Models\DiscountRule as Contract;
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use Cone\Root\Models\User;
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use Cone\Root\Traits\InteractsWithProxy;
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use Illuminate\Database\Eloquent\Factories\HasFactory;
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use Illuminate\Database\Eloquent\Model;
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use Illuminate\Database\Eloquent\Relations\BelongsToMany;
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class DiscountRule extends Model implements Contract
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{
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use HasFactory;
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use InteractsWithProxy;
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/**
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return static::getProxiedClass();
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}
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/**
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* Create a new factory instance for the model.
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*/
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protected static function newFactory(): DiscountRuleFactory
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{
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return DiscountRuleFactory::new();
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}
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/**
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* {@inheritdoc}
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*/

‎tests/Enums/DiscountRuleTypeTest.php‎

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<?php
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declare(strict_types=1);
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namespace Cone\Bazar\Tests\Enums;
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use Cone\Bazar\Enums\DiscountRuleType;
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use Cone\Bazar\Tests\TestCase;
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class DiscountRuleTypeTest extends TestCase
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{
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public function test_discount_rule_type_has_cart_case(): void
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{
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$this->assertEquals('cart', DiscountRuleType::CART->value);
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}
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public function test_discount_rule_type_has_buyable_case(): void
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{
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$this->assertEquals('buyable', DiscountRuleType::BUYABLE->value);
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}
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public function test_discount_rule_type_has_shipping_case(): void
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{
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$this->assertEquals('shipping', DiscountRuleType::SHIPPING->value);
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}
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public function test_cart_type_has_highest_priority(): void
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{
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$this->assertEquals(3, DiscountRuleType::CART->priority());
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}
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public function test_buyable_type_has_medium_priority(): void
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{
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$this->assertEquals(2, DiscountRuleType::BUYABLE->priority());
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}
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public function test_shipping_type_has_lowest_priority(): void
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{
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$this->assertEquals(1, DiscountRuleType::SHIPPING->priority());
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}
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public function test_cart_type_has_correct_label(): void
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{
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$this->assertEquals('Cart Total', DiscountRuleType::CART->label());
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}
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public function test_buyable_type_has_correct_label(): void
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{
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$this->assertEquals('Buyable Item', DiscountRuleType::BUYABLE->label());
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}
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public function test_shipping_type_has_correct_label(): void
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{
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$this->assertEquals('Shipping', DiscountRuleType::SHIPPING->label());
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}
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public function test_priorities_are_ordered_correctly(): void
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{
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$this->assertGreaterThan(
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DiscountRuleType::BUYABLE->priority(),
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DiscountRuleType::CART->priority()
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);
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$this->assertGreaterThan(
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DiscountRuleType::SHIPPING->priority(),
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DiscountRuleType::BUYABLE->priority()
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);
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}
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}

‎tests/Enums/DiscountValueTypeTest.php‎

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<?php
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declare(strict_types=1);
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namespace Cone\Bazar\Tests\Enums;
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use Cone\Bazar\Enums\DiscountValueType;
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use Cone\Bazar\Tests\TestCase;
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class DiscountValueTypeTest extends TestCase
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{
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public function test_discount_value_type_has_fix_case(): void
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{
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$this->assertEquals('fixed_amount', DiscountValueType::FIX->value);
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}
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public function test_discount_value_type_has_percent_case(): void
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{
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$this->assertEquals('percent', DiscountValueType::PERCENT->value);
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}
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public function test_all_cases_are_present(): void
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{
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$cases = DiscountValueType::cases();
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$this->assertCount(2, $cases);
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$this->assertContains(DiscountValueType::FIX, $cases);
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$this->assertContains(DiscountValueType::PERCENT, $cases);
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}
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}

‎tests/Models/DiscountRuleTest.php‎

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<?php
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declare(strict_types=1);
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namespace Cone\Bazar\Tests\Models;
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use Cone\Bazar\Enums\DiscountRuleType;
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use Cone\Bazar\Models\Cart;
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use Cone\Bazar\Models\DiscountRule;
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use Cone\Bazar\Models\Item;
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use Cone\Bazar\Models\Product;
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use Cone\Bazar\Tests\TestCase;
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use Cone\Bazar\Tests\User;
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class DiscountRuleTest extends TestCase
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{
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protected DiscountRule $discountRule;
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protected Cart $cart;
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protected function setUp(): void
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{
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parent::setUp();
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$this->discountRule = DiscountRule::factory()->create();
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$this->cart = Cart::factory()->create();
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Product::factory(3)->create()->each(function ($product) {
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$this->cart->items()->create([
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'buyable_id' => $product->id,
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'buyable_type' => Product::class,
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'quantity' => mt_rand(1, 5),
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'price' => $product->price,
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'name' => $product->name,
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]);
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});
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}
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public function test_discount_rule_has_default_attributes(): void
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{
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$this->assertTrue($this->discountRule->active);
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$this->assertFalse($this->discountRule->stackable);
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$this->assertEquals(DiscountRuleType::CART, $this->discountRule->type);
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$this->assertIsArray($this->discountRule->rules);
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}
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public function test_discount_rule_can_have_rules(): void
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{
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$this->discountRule->rules = ['min_amount' => 100];
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$this->discountRule->save();
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$this->assertSame(['min_amount' => 100], $this->discountRule->rules);
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}
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public function test_discount_rule_can_be_associated_with_users(): void
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{
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$users = User::factory()->count(2)->create();
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$this->discountRule->users()->attach($users);
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$this->assertCount(2, $this->discountRule->users);
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$this->assertTrue($this->discountRule->users->contains($users[0]));
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$this->assertTrue($this->discountRule->users->contains($users[1]));
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}
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public function test_discount_rule_can_calculate_discount(): void
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{
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$value = $this->discountRule->calculate($this->cart);
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$this->assertIsFloat($value);
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$this->assertEquals(0.0, $value);
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}
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public function test_discount_rule_can_be_applied_to_discountable(): void
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{
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$this->assertCount(0, $this->cart->discounts);
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$this->discountRule->apply($this->cart);
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$this->cart->refresh();
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$this->assertCount(1, $this->cart->discounts);
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$this->assertTrue($this->cart->discounts->contains($this->discountRule));
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}
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public function test_discount_rule_can_be_applied_to_item(): void
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{
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$item = $this->cart->items->first();
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$this->assertCount(0, $item->discounts);
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$this->discountRule->apply($item);
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$item->refresh();
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$this->assertCount(1, $item->discounts);
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$this->assertTrue($item->discounts->contains($this->discountRule));
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}
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public function test_discount_rule_types_have_priorities(): void
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{
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$this->assertEquals(3, DiscountRuleType::CART->priority());
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$this->assertEquals(2, DiscountRuleType::BUYABLE->priority());
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$this->assertEquals(1, DiscountRuleType::SHIPPING->priority());
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}
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public function test_discount_rule_types_have_labels(): void
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{
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$this->assertEquals('Cart Total', DiscountRuleType::CART->label());
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$this->assertEquals('Buyable Item', DiscountRuleType::BUYABLE->label());
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$this->assertEquals('Shipping', DiscountRuleType::SHIPPING->label());
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}
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public function test_discount_rule_can_have_different_types(): void
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{
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$cartRule = DiscountRule::factory()->create(['type' => DiscountRuleType::CART]);
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$buyableRule = DiscountRule::factory()->create(['type' => DiscountRuleType::BUYABLE]);
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$shippingRule = DiscountRule::factory()->create(['type' => DiscountRuleType::SHIPPING]);
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$this->assertEquals(DiscountRuleType::CART, $cartRule->type);
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$this->assertEquals(DiscountRuleType::BUYABLE, $buyableRule->type);
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$this->assertEquals(DiscountRuleType::SHIPPING, $shippingRule->type);
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}
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}

‎tests/Models/DiscountTest.php‎

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<?php
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declare(strict_types=1);
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namespace Cone\Bazar\Tests\Models;
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use Cone\Bazar\Models\Cart;
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use Cone\Bazar\Models\Discount;
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use Cone\Bazar\Models\DiscountRule;
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use Cone\Bazar\Models\Product;
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use Cone\Bazar\Tests\TestCase;
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class DiscountTest extends TestCase
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{
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protected DiscountRule $discountRule;
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protected Cart $cart;
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protected function setUp(): void
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{
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parent::setUp();
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$this->discountRule = DiscountRule::factory()->create();
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$this->cart = Cart::factory()->create();
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Product::factory(3)->create()->each(function ($product) {
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$this->cart->items()->create([
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'buyable_id' => $product->id,
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'buyable_type' => Product::class,
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'quantity' => mt_rand(1, 5),
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'price' => $product->price,
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'name' => $product->name,
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]);
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});
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}
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public function test_discount_has_default_value(): void
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{
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$this->discountRule->apply($this->cart);
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$discount = $this->cart->discounts()->first()->discount;
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$this->assertInstanceOf(Discount::class, $discount);
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$this->assertEquals(0.0, $discount->value);
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}
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public function test_discount_value_can_be_set(): void
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{
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$this->cart->discounts()->attach($this->discountRule, ['value' => 25.50]);
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$discount = $this->cart->discounts()->first()->discount;
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$this->assertEquals(25.50, $discount->value);
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}
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public function test_discount_can_be_formatted(): void
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{
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$this->cart->discounts()->attach($this->discountRule, ['value' => 10.00]);
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$discount = $this->cart->discounts()->first()->discount;
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$formatted = $discount->format();
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$this->assertIsString($formatted);
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}
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public function test_discount_has_formatted_value_attribute(): void
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{
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$this->cart->discounts()->attach($this->discountRule, ['value' => 15.00]);
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$discount = $this->cart->discounts()->first()->discount;
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$this->assertIsString($discount->formatted_value);
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}
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}

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