Add initial tests for LivewireComponentArrayFilter

src/Views/Filters/LivewireComponentArrayFilter.php

@@ -25,7 +25,7 @@ public function validate(array $value): array|bool
 
     public function isEmpty(array $value = []): bool
     {
-        return empty($value);
+        return empty($value) || (count($value) == 1 && (is_null($value[0]) || $value[0] == ''));
     }
 
     /**

tests/Unit/Views/Filters/LivewireComponentArrayFilterTest.php

@@ -0,0 +1,53 @@
+<?php
+
+namespace Rappasoft\LaravelLivewireTables\Tests\Unit\Views\Filters;
+
+use Illuminate\Database\Eloquent\Builder;
+use PHPUnit\Framework\Attributes\Group;
+use Rappasoft\LaravelLivewireTables\Views\Filters\LivewireComponentArrayFilter;
+
+#[Group('Filters')]
+final class LivewireComponentArrayFilterTest extends FilterTestCase
+{
+    protected function setUp(): void
+    {
+        parent::setUp();
+        self::$filterInstance = LivewireComponentArrayFilter::make('Active');
+    }
+
+    public function test_can_get_filter_callback(): void
+    {
+        $this->assertFalse(self::$filterInstance->hasFilterCallback());
+
+        self::$filterInstance
+            ->filter(function (Builder $builder, array $values) {
+                return $builder->whereIn('name', $values);
+            });
+
+        $this->assertTrue(self::$filterInstance->hasFilterCallback());
+        $this->assertIsCallable(self::$filterInstance->getFilterCallback());
+    }
+
+    public function test_can_set_livewire_component_filter_to_text(): void
+    {
+        $this->assertSame(['test'], self::$filterInstance->validate(['test']));
+        $this->assertSame([123], self::$filterInstance->validate([123]));
+
+    }
+
+    public function test_can_get_if_livewire_component_filter_empty(): void
+    {
+        $this->assertTrue(self::$filterInstance->isEmpty());
+        $this->assertTrue(self::$filterInstance->isEmpty([]));
+        $this->assertTrue(self::$filterInstance->isEmpty(['']));
+        $this->assertFalse(self::$filterInstance->isEmpty(['123']));
+        $this->assertFalse(self::$filterInstance->isEmpty(['test']));
+        $this->assertFalse(self::$filterInstance->isEmpty([1234]));
+
+    }
+
+    public function test_can_get_filter_default_value(): void
+    {
+        $this->assertSame([], self::$filterInstance->getDefaultValue());
+    }
+}