change phone number display

tests/Unit/PhoneFormattingTest.php

@@ -0,0 +1,31 @@
+<?php
+
+namespace Tests\Unit;
+
+use Tests\TestCase;
+use App\Models\Bidders;
+use App\Helpers\PhoneHelper;
+
+class PhoneFormattingTest extends TestCase
+{
+    /** @test */
+    public function it_formats_a_10_digit_phone_number()
+    {
+        $formatted = PhoneHelper::format('1234567890');
+        $this->assertEquals('123-456-7890', $formatted);
+    }
+
+    /** @test */
+    public function it_strips_non_numeric_characters_before_formatting()
+    {
+        $formatted = PhoneHelper::format('(123) 456-7890');
+        $this->assertEquals('123-456-7890', $formatted);
+    }
+
+    /** @test */
+    public function it_returns_original_value_if_not_10_digits()
+    {
+        $formatted = PhoneHelper::format('1234567');
+        $this->assertEquals('1234567', $formatted);
+    }
+}