Adds weight on ServersLoadBalancer

integration/docker_test.go

@@ -4,6 +4,7 @@ import (
 	"encoding/json"
 	"io"
 	"net/http"
+	"strings"
 	"testing"
 	"time"
 
@@ -55,6 +56,56 @@ func (s *DockerSuite) TestSimpleConfiguration() {
 	require.NoError(s.T(), err)
 }
 
+func (s *DockerSuite) TestWRRServer() {
+	tempObjects := struct {
+		DockerHost  string
+		DefaultRule string
+	}{
+		DockerHost:  s.getDockerHost(),
+		DefaultRule: "Host(`{{ normalize .Name }}.docker.localhost`)",
+	}
+
+	file := s.adaptFile("fixtures/docker/simple.toml", tempObjects)
+
+	s.composeUp()
+
+	s.traefikCmd(withConfigFile(file))
+
+	whoami1IP := s.getComposeServiceIP("wrr-server")
+	whoami2IP := s.getComposeServiceIP("wrr-server2")
+
+	// Expected a 404 as we did not configure anything
+	err := try.GetRequest("http://127.0.0.1:8000/", 500*time.Millisecond, try.StatusCodeIs(http.StatusNotFound))
+	require.NoError(s.T(), err)
+
+	err = try.GetRequest("http://127.0.0.1:8080/api/http/services", 1000*time.Millisecond, try.BodyContains("wrr-server"))
+	require.NoError(s.T(), err)
+
+	repartition := map[string]int{}
+	for i := 0; i < 4; i++ {
+		req, err := http.NewRequest(http.MethodGet, "http://127.0.0.1:8000/whoami", nil)
+		req.Host = "my.wrr.host"
+		require.NoError(s.T(), err)
+
+		response, err := http.DefaultClient.Do(req)
+		require.NoError(s.T(), err)
+		assert.Equal(s.T(), http.StatusOK, response.StatusCode)
+
+		body, err := io.ReadAll(response.Body)
+		require.NoError(s.T(), err)
+
+		if strings.Contains(string(body), whoami1IP) {
+			repartition[whoami1IP]++
+		}
+		if strings.Contains(string(body), whoami2IP) {
+			repartition[whoami2IP]++
+		}
+	}
+
+	assert.Equal(s.T(), 3, repartition[whoami1IP])
+	assert.Equal(s.T(), 1, repartition[whoami2IP])
+}
+
 func (s *DockerSuite) TestDefaultDockerContainers() {
 	tempObjects := struct {
 		DockerHost  string