unit tests for signature generation

tests/unit/methodTest.php

@@ -0,0 +1,70 @@
+<?php
+
+class methodTest extends baseTest
+{
+
+    private $reflected;
+
+    public function _before()
+    {
+        parent::_before();
+        $this->reflected = new \ReflectionClass($this->V);
+    }
+
+    public function _after()
+    {
+        parent::_after();
+    }
+
+    public function testSignature()
+    {
+        $request_time = date('c');
+        $resource     = array(
+            'method'   => 'GET',
+            'endpoint' => '/v1/resourceName',
+            'data'     => ''
+        );
+        $secret = '111111';
+        $this->V->setSecret($secret);
+
+        $this->assertSame(
+            $this->getSignature($request_time, $resource['method'], $resource['endpoint'], $secret), 
+            $this->call('getSignature', $resource, $request_time)
+        );
+
+        //not a GET request, so signature should be the same
+        $resource['data'] = array('foo' => 'bar', 'bar' => 'foo');
+        $nonGet = array('POST', 'DELETE', 'PUT');
+        foreach ($nonGet as $meth) {
+            $resource['method'] = $meth;
+            $this->assertSame(
+                $this->getSignature($request_time, $resource['method'], $resource['endpoint'], $secret), 
+                $this->call('getSignature', $resource, $request_time)
+            );
+        }
+
+        //for a GET request signature includes the query params
+        $resource['method'] = 'GET';
+        $this->assertSame(
+            $this->getSignature($request_time, $resource['method'], $resource['endpoint'] . "?foo=bar&bar=foo", $secret), 
+            $this->call('getSignature', $resource, $request_time)
+        );
+
+    }
+
+
+    private function getSignature($request_time, $method, $endpoint, $secret)
+    {
+        $token = preg_replace("/\s+/", "", $request_time) . $method . $endpoint;
+
+        return hash_hmac("sha256", $token, $secret);
+    }
+
+    private function call($method, $arg1 = '', $arg2 = '', $arg3 = '')
+    {
+        $method = $this->reflected->getMethod($method);
+        $method->setAccessible(true);
+        return $method->invoke($this->V, $arg1, $arg2, $arg3);
+    }
+
+}