Pull out common code from client and host versions of LogToServer

remoting/jingle_glue/server_log_entry_unittest.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "remoting/jingle_glue/server_log_entry_unittest.h"
 
 #include <sstream>
 
+#include "testing/gtest/include/gtest/gtest.h"
 #include "third_party/libjingle/source/talk/xmllite/xmlelement.h"
 
+using buzz::QName;
 using buzz::XmlAttr;
 using buzz::XmlElement;
 
 namespace remoting {
 
+const char kJabberClientNamespace[] = "jabber:client";
+const char kChromotingNamespace[] = "google:remoting";
+
+XmlElement* GetLogElementFromStanza(XmlElement* stanza) {
+  if (stanza->Name() != QName(kJabberClientNamespace, "iq")) {
+    ADD_FAILURE() << "Expected element 'iq'";
+    return NULL;
+  }
+  XmlElement* log_element = stanza->FirstChild()->AsElement();
+  if (log_element->Name() != QName(kChromotingNamespace, "log")) {
+    ADD_FAILURE() << "Expected element 'log'";
+    return NULL;
+  }
+  if (log_element->NextChild()) {
+    ADD_FAILURE() << "Expected only 1 child of 'iq'";
+    return NULL;
+  }
+  return log_element;
+}
+
+XmlElement* GetSingleLogEntryFromStanza(XmlElement* stanza) {
+  XmlElement* log_element = GetLogElementFromStanza(stanza);
+  if (!log_element) {
+    // Test failure already recorded, so just return NULL here.
+    return NULL;
+  }
+  XmlElement* entry = log_element->FirstChild()->AsElement();
+  if (entry->Name() != QName(kChromotingNamespace, "entry")) {
+    ADD_FAILURE() << "Expected element 'entry'";
+    return NULL;
+  }
+  if (entry->NextChild()) {
+    ADD_FAILURE() << "Expected only 1 child of 'log'";
+    return NULL;
+  }
+  return entry;
+}
+
 bool VerifyStanza(
     const std::map<std::string, std::string>& key_value_pairs,
     const std::set<std::string> keys,
     const XmlElement* elem,
     std::string* error) {
   int attrCount = 0;
   for (const XmlAttr* attr = elem->FirstAttr(); attr != NULL;
        attr = attr->NextAttr(), attrCount++) {
     if (attr->Name().Namespace().length() != 0) {
       *error = "attribute has non-empty namespace " +
@@ skipping 22 matching lines @@
     std::stringstream s;
     s << "stanza has " << attrCount << " keys: expected "
       << attr_count_expected;
     *error = s.str();
     return false;
   }
   return true;
 }
 
 }  // namespace remoting