Fix Utils::isRepeaterTemplate function.

Author: dadish

src/Utils.php

@@ -216,7 +216,7 @@ public static function normalizeTypeName($name)
   public static function isRepeaterTemplate(Template $template)
   {
     // if it's not prefixed with "repeater_" then it's not a repeater template
-    if (strpos($template->name, 'repeater_' !== 0)) {
+    if (strpos($template->name, 'repeater_') !== 0) {
       return false;
     }
 

test/UtilsTest.php

@@ -0,0 +1,21 @@
+<?php
+
+namespace ProcessWire\GraphQL\Test;
+
+use ProcessWire\Template;
+use ProcessWire\GraphQL\Test\GraphqlTestCase;
+use ProcessWire\GraphQL\Utils;
+
+class UtilsTest extends GraphQLTestCase
+{
+  public static function testIsRepeaterTemplate()
+  {
+    $repeaterTemplate = new Template();
+    $repeaterTemplate->name = 'something';
+    assertFalse(Utils::isRepeaterTemplate($repeaterTemplate), 'Incorrectly marks template as a repeater.');
+    $repeaterTemplate->name = 'repeater_something';
+    assertFalse(Utils::isRepeaterTemplate($repeaterTemplate), 'Incorrectly marks template as a repeater.');
+    $repeaterTemplate->flags = $repeaterTemplate->flags | Template::flagSystem;
+    assertTrue(Utils::isRepeaterTemplate($repeaterTemplate), 'Does not properly detect a repeater template.');
+  }
+}