add webhooks find all test

tests/Zendesk/API/UnitTests/Core/WebhooksTest.php

@@ -0,0 +1,38 @@
+<?php
+
+namespace ZEndesk\Api\UnitTests\Core;
+
+use Zendesk\Api\UnitTests\BasicTest;
+
+/**
+ * Webhooks test class
+ */
+class WebhooksTest extends BasicTest
+{
+    /**
+     * Test find all method
+     */
+
+    public function testFindAll()
+    {
+        $queryParams = [
+            'filter[name_contains]' => 'somerule',
+        ];
+
+        // We expect invalid parameters are removed.
+        // We also expect url encoded keys and values
+        $expectedQueryParams = [];
+        foreach ($queryParams as $key => $value) {
+            $expectedQueryParams = array_merge($expectedQueryParams, [urlencode($key) => $value]);
+        }
+
+        $this->assertEndpointCalled(
+            function () use ($queryParams) {
+                $this->client->webhooks()->findAll($queryParams);
+            },
+            'webhooks',
+            'GET',
+            ['queryParams' => $expectedQueryParams]
+        );
+    }
+}