Add test for Strings::isHex()

diff --git a/tests/src/Util/StringsTest.php b/tests/src/Util/StringsTest.php
index 666b76e..f926183 100644 (file)
--- a/tests/src/Util/StringsTest.php
+++ b/tests/src/Util/StringsTest.php
@@ -82,4 +82,39 @@ class StringsTest extends TestCase
                        $escapedString
                );
        }
+
+       public function dataIsHex()
+       {
+               return [
+                       'validHex' => [
+                               'input' => '90913473615bf00c122ac78338492980',
+                               'valid' => true,
+                       ],
+                       'invalidHex' => [
+                               'input' => '90913473615bf00c122ac7833849293',
+                               'valid' => false,
+                       ],
+                       'emptyHex' => [
+                               'input' => '',
+                               'valid' => false,
+                       ],
+                       'nullHex' => [
+                               'input' => null,
+                               'valid' => false,
+                       ],
+               ];
+       }
+
+       /**
+        * Tests if the string is a valid hexadecimal value
+        *
+        * @param string $input
+        * @param bool $valid
+        *
+        * @dataProvider dataIsHex
+        */
+       public function testIsHex($input, $valid)
+       {
+               $this->assertEquals($valid, Strings::isHex($input));
+       }
 }