--- /dev/null
+<?php
+
+namespace Drupal\Tests\video_embed_field\Kernel;
+
+/**
+ * Strip whitespace.
+ */
+trait StripWhitespaceTrait {
+
+ /**
+ * Remove HTML whitespace from a string.
+ *
+ * @param string $string
+ * The input string.
+ *
+ * @return string
+ * The whitespace cleaned string.
+ */
+ protected function stripWhitespace($string) {
+ $no_whitespace = preg_replace('/\s{2,}/', '', $string);
+ $no_whitespace = str_replace("\n", '', $no_whitespace);
+ return $no_whitespace;
+ }
+
+}