add cookie path attribute test

spec/cookie_spec.cr

@@ -4,6 +4,9 @@ WebMock.stub(:get, "example.com/cookies1").to_return(headers: {"Set-Cookie" => "
 WebMock.stub(:get, "example.com/cookies1_domain").to_return(headers: {"Set-Cookie" => "id=123; Domain=example.com"})
 WebMock.stub(:get, "example.com/cookies2").to_return(headers: {"Set-Cookie" => "name=kanezoh"})
 WebMock.stub(:get, "example.com/cookies3").to_return(headers: {"Set-Cookie" => "id=456"})
+WebMock.stub(:get, "example.com/paths").to_return(headers: {"Set-Cookie" => "id=123; Path=/paths"})
+WebMock.stub(:get, "example.com/paths/hoge").to_return()
+WebMock.stub(:get, "example.com/hoge/paths").to_return()
 WebMock.stub(:get, "www.example.com").to_return()
 WebMock.stub(:get, "example.com/meta_cookie").to_return(body:
 <<-BODY
@@ -74,4 +77,17 @@ describe "Mechanize Cookie test" do
     agent.get("http://www.example.com/")
     agent.request_headers.has_key?("Cookie").should eq true
   end
+
+  it "doesn't send not-matched path if path attribute is set" do
+    agent = Mechanize.new
+    agent.get("http://example.com/paths")
+    agent.get("http://example.com/")
+    agent.request_headers.has_key?("Cookie").should eq false
+    agent.get("http://example.com/paths")
+    agent.request_headers.has_key?("Cookie").should eq true
+    agent.get("http://example.com/paths/hoge")
+    agent.request_headers.has_key?("Cookie").should eq true
+    agent.get("http://example.com/hoge/paths")
+    agent.request_headers.has_key?("Cookie").should eq false
+  end
 end

src/mechanize/http/agent.cr

@@ -131,7 +131,7 @@ module MechanizeCr
         host = uri.host
         valid_cookies = ::HTTP::Cookies.new
         request_cookies.each do |cookie|
-          valid_cookies << cookie if cookie.valid_cookie?(host)
+          valid_cookies << cookie if cookie.valid_cookie?(uri)
         end
         valid_cookies
       end
@@ -157,7 +157,13 @@ class HTTP::Cookie
     @origin = origin
   end
 
-  def valid_cookie?(host)
+  def valid_cookie?(uri)
+    host = uri.host
+    if path
+      bool = uri.path.try &.=~(/^#{path}.*/)
+      return false if bool.nil?
+    end
+
     if domain
       host.try &.=~(/.*#{domain.try &.gsub(".", "\.")}$/)
     else