Further improve regex and unit tests

Author: tvdijen

src/XMLSchema/Type/DateTimeValue.php

@@ -31,7 +31,7 @@ class DateTimeValue extends AbstractAnySimpleType
     protected function sanitizeValue(string $value): string
     {
         $normalized = static::collapseWhitespace(static::normalizeWhitespace($value));
-        $sanitized = preg_replace('/\.(\d{0,6})\d*/', '.$1', $normalized);
+        $sanitized = preg_replace('/\.(\d{0,12})\d*/', '.$1', $normalized);
 
         // Remove all trailing zeros after the dot, and remove the dot if only zeros were present
         $sanitized = preg_replace('/\.(?=\d)(?:\d*?[1-9])?\K0+(?=[^0-9]|$)/', '', $sanitized);

src/XMLSchema/Type/TimeValue.php

@@ -31,7 +31,7 @@ class TimeValue extends AbstractAnySimpleType
     protected function sanitizeValue(string $value): string
     {
         $normalized = static::collapseWhitespace(static::normalizeWhitespace($value));
-        $sanitized = preg_replace('/\.(\d{0,6})\d*/', '.$1', $normalized);
+        $sanitized = preg_replace('/\.(\d{0,12})\d*/', '.$1', $normalized);
 
         // Remove all trailing zeros after the dot, and remove the dot if only zeros were present
         $sanitized = preg_replace('/\.(?=\d)(?:\d*?[1-9])?\K0+(?=[^0-9]|$)/', '', $sanitized);