package client // import "github.com/docker/docker/client"

 
 import (
 	"bytes"

 	"context"

 	"encoding/json"
 	"fmt"
 	"io/ioutil"
 	"net/http"
 	"strings"
 	"testing"
 
 	"github.com/docker/docker/api/types"
 	"github.com/docker/docker/api/types/filters"
 	"github.com/docker/docker/api/types/swarm"

 	"github.com/docker/docker/errdefs"

 )
 
 func TestNodeListError(t *testing.T) {
 	client := &Client{

 		client: newMockClient(errorMock(http.StatusInternalServerError, "Server error")),

 	}
 
 	_, err := client.NodeList(context.Background(), types.NodeListOptions{})

 	if !errdefs.IsSystem(err) {

 		t.Fatalf("expected a Server Error, got %[1]T: %[1]v", err)

 	}

 }
 
 func TestNodeList(t *testing.T) {
 	expectedURL := "/nodes"
 
 	filters := filters.NewArgs()
 	filters.Add("label", "label1")
 	filters.Add("label", "label2")
 
 	listCases := []struct {
 		options             types.NodeListOptions
 		expectedQueryParams map[string]string
 	}{
 		{
 			options: types.NodeListOptions{},
 			expectedQueryParams: map[string]string{
 				"filters": "",
 			},
 		},
 		{
 			options: types.NodeListOptions{

 				Filters: filters,

 			},
 			expectedQueryParams: map[string]string{
 				"filters": `{"label":{"label1":true,"label2":true}}`,
 			},
 		},
 	}
 	for _, listCase := range listCases {
 		client := &Client{

 			client: newMockClient(func(req *http.Request) (*http.Response, error) {

 				if !strings.HasPrefix(req.URL.Path, expectedURL) {
 					return nil, fmt.Errorf("Expected URL '%s', got '%s'", expectedURL, req.URL)
 				}
 				query := req.URL.Query()
 				for key, expected := range listCase.expectedQueryParams {
 					actual := query.Get(key)
 					if actual != expected {
 						return nil, fmt.Errorf("%s not set in URL query properly. Expected '%s', got %s", key, expected, actual)
 					}
 				}
 				content, err := json.Marshal([]swarm.Node{
 					{
 						ID: "node_id1",
 					},
 					{
 						ID: "node_id2",
 					},
 				})
 				if err != nil {
 					return nil, err
 				}
 				return &http.Response{
 					StatusCode: http.StatusOK,
 					Body:       ioutil.NopCloser(bytes.NewReader(content)),
 				}, nil
 			}),
 		}
 
 		nodes, err := client.NodeList(context.Background(), listCase.options)
 		if err != nil {
 			t.Fatal(err)
 		}
 		if len(nodes) != 2 {
 			t.Fatalf("expected 2 nodes, got %v", nodes)
 		}
 	}
 }