seems like after libcurl 8 cookies are handled this way... anyone fee…

…l free to confirm if this is correct...

tests/tc_curl_easy.rb

@@ -110,7 +110,7 @@ def test_class_perform_01
   end    
 
   def test_class_perform_02
-    data = ""
+    data = String.new
     assert_instance_of Curl::Easy, c = Curl::Easy.perform($TEST_URL) { |curl| curl.on_body { |d| data << d; d.length } }    
 
     assert_nil c.body_str
@@ -211,7 +211,7 @@ def test_get_01
   end    
 
   def test_get_02
-    data = ""
+    data = String.new
     c = Curl::Easy.new($TEST_URL) do |curl|
       curl.on_body { |d| data << d; d.length }
     end

tests/tc_curl_easy_cookielist.rb

@@ -15,12 +15,21 @@ def test_setopt_cookielist
 
     # Since 7.43.0 cookies that were imported in the Set-Cookie format without a domain name are not exported by this option.
     # So, before 7.43.0, c3 and c4 will be exported too; but that version is far too old for current curb version, so it's not handled here.
+    if Curl::CURL_VERSION.to_f > 8
+    expected_cookielist = [
+      ".127.0.0.1\tTRUE\t/\tFALSE\t#{expires.to_time.to_i}\tc5\tv5",
+      ".127.0.0.1\tTRUE\t/\tFALSE\t0\tc6\tv6",
+      ".localhost\tTRUE\t/\tFALSE\t#{expires.to_time.to_i}\tc1\tv1",
+      ".localhost\tTRUE\t/\tFALSE\t0\tc2\tv2",
+    ]
+    else
     expected_cookielist = [
       "127.0.0.1\tFALSE\t/\tFALSE\t#{expires.to_time.to_i}\tc5\tv5",
       "127.0.0.1\tFALSE\t/\tFALSE\t0\tc6\tv6",
       ".localhost\tTRUE\t/\tFALSE\t#{expires.to_time.to_i}\tc1\tv1",
       ".localhost\tTRUE\t/\tFALSE\t0\tc2\tv2",
     ]
+    end
     assert_equal expected_cookielist, easy.cookielist
 
     easy.url = "#{TestServlet.url}/get_cookies"

tests/tc_curl_multi.rb

@@ -114,13 +114,13 @@ def test_connection_autoclose
   end
 
   def test_new_multi_01
-    d1 = ""
+    d1 = String.new
     c1 = Curl::Easy.new($TEST_URL) do |curl|
       curl.headers["User-Agent"] = "myapp-0.0"
       curl.on_body {|d| d1 << d; d.length }
     end
 
-    d2 = ""
+    d2 = String.new
     c2 = Curl::Easy.new($TEST_URL) do |curl|
       curl.headers["User-Agent"] = "myapp-0.0"
       curl.on_body {|d| d2 << d; d.length }
@@ -206,7 +206,7 @@ def test_n_requests
     m = Curl::Multi.new
     responses = []
     n.times do|i|
-      responses[i] = ""
+      responses[i] = String.new
       c = Curl::Easy.new($TEST_URL) do|curl|
         curl.on_body{|data| responses[i] << data; data.size }
       end
@@ -230,7 +230,7 @@ def test_n_requests_with_break
     5.times do|it|
       responses = []
       n.times do|i|
-        responses[i] = ""
+        responses[i] = String.new
         c = Curl::Easy.new($TEST_URL) do|curl|
           curl.on_body{|data| responses[i] << data; data.size }
         end
@@ -376,7 +376,7 @@ class TestForScope
     attr_reader :buf
 
     def t_method
-      @buf = ""
+      @buf = String.new
       @m = Curl::Multi.new
       10.times do|i|
         c = Curl::Easy.new($TEST_URL)
@@ -422,8 +422,8 @@ def test_remote_requests
     m = Curl::Multi.new
     # add a few easy handles
     requests.each do |url|
-      responses[url] = ""
-      responses["#{url}-header"] = ""
+      responses[url] = String.new
+      responses["#{url}-header"] = String.new
       c = Curl::Easy.new(url) do|curl|
         curl.follow_location = true
         curl.on_header{|data| responses["#{url}-header"] << data; data.size }