ceftests: Fix CookieTest failure with --use-test-http-server (see issue #3348)

tests/ceftests/cookie_unittest.cc

@@ -1111,10 +1111,12 @@ class CookieAccessResponseHandler {
 };
 
 std::string GetHeaderValue(const CefServer::HeaderMap& header_map,
-                           const std::string& header_name) {
-  CefServer::HeaderMap::const_iterator it = header_map.find(header_name);
-  if (it != header_map.end())
-    return it->second;
+                           const std::string& header_name_lower) {
+  for (const auto& [name, value] : header_map) {
+    if (AsciiStrToLower(name) == header_name_lower) {
+      return value;
+    }
+  }
   return std::string();
 }
 
@@ -1131,7 +1133,7 @@ class CookieAccessSchemeHandler : public CefResourceHandler {
 
     CefRequest::HeaderMap headerMap;
     request->GetHeaderMap(headerMap);
-    const std::string& cookie_str = GetHeaderValue(headerMap, "Cookie");
+    const std::string& cookie_str = GetHeaderValue(headerMap, "cookie");
     TestCookieString(cookie_str, data_->cookie_js_ct_, data_->cookie_net_ct_);
 
     // Continue immediately.

tests/ceftests/test_util.cc

@@ -11,6 +11,12 @@
 #include "include/cef_request_context_handler.h"
 #include "tests/gtest/include/gtest/gtest.h"
 
+std::string AsciiStrToLower(const std::string& str) {
+  std::string lowerStr = str;
+  std::transform(lowerStr.begin(), lowerStr.end(), lowerStr.begin(), ::tolower);
+  return lowerStr;
+}
+
 void TestMapEqual(const CefRequest::HeaderMap& map1,
                   const CefRequest::HeaderMap& map2,
                   bool allowExtras) {
@@ -25,11 +31,9 @@ void TestMapEqual(const CefRequest::HeaderMap& map1,
 
   for (it1 = map1.begin(); it1 != map1.end(); ++it1) {
     bool found = false;
-    std::string name1 = it1->first;
-    std::transform(name1.begin(), name1.end(), name1.begin(), ::tolower);
+    std::string name1 = AsciiStrToLower(it1->first);
     for (it2 = map2.begin(); it2 != map2.end(); ++it2) {
-      std::string name2 = it2->first;
-      std::transform(name2.begin(), name2.end(), name2.begin(), ::tolower);
+      std::string name2 = AsciiStrToLower(it2->first);
       if (name1 == name2 && it1->second == it2->second) {
         found = true;
         break;

tests/ceftests/test_util.h

@@ -16,6 +16,8 @@
 CefTime CefTimeFrom(CefBaseTime value);
 CefBaseTime CefBaseTimeFrom(const CefTime& value);
 
+std::string AsciiStrToLower(const std::string& str);
+
 // Test that CefRequest::HeaderMap objects are equal. Multiple values with the
 // same key are allowed, but not duplicate entries with the same key/value. If
 // |allowExtras| is true then additional header fields will be allowed in

tests/ceftests/urlrequest_unittest.cc

@@ -453,8 +453,7 @@ std::string GetHeaderValue(const CefRequest::HeaderMap& header_map,
                            const std::string& header_name_lower) {
   CefRequest::HeaderMap::const_iterator it = header_map.begin();
   for (; it != header_map.end(); ++it) {
-    std::string name = it->first;
-    std::transform(name.begin(), name.end(), name.begin(), ::tolower);
+    std::string name = AsciiStrToLower(it->first);
     if (name == header_name_lower)
       return it->second;
   }