test: update test code

Author: kenjis

tests/system/HTTP/IncomingRequestTest.php

@@ -701,6 +701,8 @@ public function testGetIPAddressNormal()
         $expected               = '123.123.123.123';
         $_SERVER['REMOTE_ADDR'] = $expected;
         $this->request          = new Request(new App());
+        $this->request->populateHeaders();
+
         $this->assertSame($expected, $this->request->getIPAddress());
         // call a second time to exercise the initial conditional block in getIPAddress()
         $this->assertSame($expected, $this->request->getIPAddress());
@@ -714,6 +716,7 @@ public function testGetIPAddressThruProxy()
         $config->proxyIPs                = '10.0.1.200,192.168.5.0/24';
         $_SERVER['HTTP_X_FORWARDED_FOR'] = $expected;
         $this->request                   = new Request($config);
+        $this->request->populateHeaders();
 
         // we should see the original forwarded address
         $this->assertSame($expected, $this->request->getIPAddress());
@@ -727,6 +730,7 @@ public function testGetIPAddressThruProxyInvalid()
         $config->proxyIPs                = '10.0.1.200,192.168.5.0/24';
         $_SERVER['HTTP_X_FORWARDED_FOR'] = $expected;
         $this->request                   = new Request($config);
+        $this->request->populateHeaders();
 
         // spoofed address invalid
         $this->assertSame('10.0.1.200', $this->request->getIPAddress());
@@ -740,6 +744,7 @@ public function testGetIPAddressThruProxyNotWhitelisted()
         $config->proxyIPs                = '10.0.1.200,192.168.5.0/24';
         $_SERVER['HTTP_X_FORWARDED_FOR'] = $expected;
         $this->request                   = new Request($config);
+        $this->request->populateHeaders();
 
         // spoofed address invalid
         $this->assertSame('10.10.1.200', $this->request->getIPAddress());
@@ -753,6 +758,7 @@ public function testGetIPAddressThruProxySubnet()
         $config->proxyIPs                = ['192.168.5.0/24'];
         $_SERVER['HTTP_X_FORWARDED_FOR'] = $expected;
         $this->request                   = new Request($config);
+        $this->request->populateHeaders();
 
         // we should see the original forwarded address
         $this->assertSame($expected, $this->request->getIPAddress());
@@ -766,6 +772,7 @@ public function testGetIPAddressThruProxyOutofSubnet()
         $config->proxyIPs                = ['192.168.5.0/28'];
         $_SERVER['HTTP_X_FORWARDED_FOR'] = $expected;
         $this->request                   = new Request($config);
+        $this->request->populateHeaders();
 
         // we should see the original forwarded address
         $this->assertSame('192.168.5.21', $this->request->getIPAddress());