Add case three to FieldtypeOptions test.

Author: dadish

test/Field/Page/Fieldtype/FieldtypeOptions/CaseThreeTest.php

@@ -0,0 +1,58 @@
+<?php
+
+/**
+ * You can pass a plain string for options field that
+ * stores single option
+ */
+
+namespace ProcessWire\GraphQL\Test\Field\Page\Fieldtype\FieldtypeOptions;
+
+use \ProcessWire\GraphQL\Utils;
+use \ProcessWire\GraphQL\Test\GraphQLTestCase;
+use \ProcessWire\GraphQL\Test\Field\Page\Traits\AccessTrait;
+use ProcessWire\NullPage;
+
+class FieldtypeOptionsCaseThreeTest extends GraphQLTestCase {
+
+  const accessRules = [
+    'legalTemplates' => ['cities', 'city'],
+    'legalFields' => ['options_single', 'title'],
+  ];
+
+  use AccessTrait;
+	
+  public function testValue()
+  {
+    $name = "new-city";
+    $title = "New City";
+    $option = 'Mon';
+  	$query = 'mutation createPage ($page: CityCreateInputType!) {
+  		createCity (page: $page) {
+  			name
+  			id
+        title
+        options_single {
+          title
+          value
+          id
+        }
+  		}
+  	}';
+  	$variables = [
+  		"page" => [
+  			"parent" => "4049",
+				"name" => $name,
+				"title" => $title,
+        "options_single" => $option,
+  		]
+  	];
+  	$res = $this->execute($query, json_encode($variables));
+
+    $newCity = Utils::pages()->get("template=city, name=$name");
+    $this->assertTrue(!$newCity instanceof NullPage, 'New Page is created.');
+    $this->assertEquals($name, $newCity->name, 'New Page has correct name.');
+    $this->assertEquals($title, $newCity->title, 'New Page has correct title.');
+    $this->assertEquals($option, $newCity->options_single->value, 'New Page has correct option value.');
+  }
+
+}