feat: add Liquid filters 'sample', 'days_ago'

tests/Unit/Liquid/Filters/DataTest.php

@@ -237,3 +237,43 @@ test('group_by filter handles mixed data types as keys', function () {
         '' => [['name' => 'Alice', 'active' => null]], // PHP converts null keys to empty string
     ]);
 });
+
+test('sample filter returns a random element from array', function () {
+    $filter = new Data();
+    $array = ['1', '2', '3', '4', '5'];
+
+    $result = $filter->sample($array);
+    expect($result)->toBeIn($array);
+});
+
+test('sample filter returns a random element from string array', function () {
+    $filter = new Data();
+    $array = ['cat', 'dog'];
+
+    $result = $filter->sample($array);
+    expect($result)->toBeIn($array);
+});
+
+test('sample filter returns null for empty array', function () {
+    $filter = new Data();
+    $array = [];
+
+    $result = $filter->sample($array);
+    expect($result)->toBeNull();
+});
+
+test('sample filter returns the only element from single element array', function () {
+    $filter = new Data();
+    $array = ['single'];
+
+    $result = $filter->sample($array);
+    expect($result)->toBe('single');
+});
+
+test('sample filter works with mixed data types', function () {
+    $filter = new Data();
+    $array = [1, 'string', true, null, ['nested']];
+
+    $result = $filter->sample($array);
+    expect($result)->toBeIn($array);
+});

tests/Unit/Liquid/Filters/DateTest.php

@@ -0,0 +1,32 @@
+<?php
+
+use App\Liquid\Filters\Date;
+use Carbon\Carbon;
+
+test('days_ago filter returns correct date', function () {
+    $filter = new Date();
+    $threeDaysAgo = Carbon::now()->subDays(3)->toDateString();
+
+    expect($filter->days_ago(3))->toBe($threeDaysAgo);
+});
+
+test('days_ago filter handles string input', function () {
+    $filter = new Date();
+    $fiveDaysAgo = Carbon::now()->subDays(5)->toDateString();
+
+    expect($filter->days_ago('5'))->toBe($fiveDaysAgo);
+});
+
+test('days_ago filter with zero days returns today', function () {
+    $filter = new Date();
+    $today = Carbon::now()->toDateString();
+
+    expect($filter->days_ago(0))->toBe($today);
+});
+
+test('days_ago filter with large number works correctly', function () {
+    $filter = new Date();
+    $hundredDaysAgo = Carbon::now()->subDays(100)->toDateString();
+
+    expect($filter->days_ago(100))->toBe($hundredDaysAgo);
+});