tests: Add end 2 end frontend testing with Cypress (#1403)

tests/Unit/Helpers/StringHelperTest.php

@@ -0,0 +1,25 @@
+<?php
+
+namespace Tests\Unit\Helpers;
+
+use Tests\TestCase;
+use App\Helpers\StringHelper;
+
+class StringHelperTest extends TestCase
+{
+    public function test_it_builds_a_sql_query()
+    {
+        $array = [
+            'column1',
+            'column2',
+            'column3',
+        ];
+
+        $searchTerm = 'term';
+
+        $this->assertEquals(
+            "column1 LIKE '%term%' or column2 LIKE '%term%' or column3 LIKE '%term%'",
+            StringHelper::buildQuery($array, $searchTerm)
+        );
+    }
+}