github.com/hms58/moby@v1.13.1/client/events_test.go (about)

     1  package client
     2  
     3  import (
     4  	"bytes"
     5  	"encoding/json"
     6  	"fmt"
     7  	"io"
     8  	"io/ioutil"
     9  	"net/http"
    10  	"strings"
    11  	"testing"
    12  
    13  	"golang.org/x/net/context"
    14  
    15  	"github.com/docker/docker/api/types"
    16  	"github.com/docker/docker/api/types/events"
    17  	"github.com/docker/docker/api/types/filters"
    18  )
    19  
    20  func TestEventsErrorInOptions(t *testing.T) {
    21  	errorCases := []struct {
    22  		options       types.EventsOptions
    23  		expectedError string
    24  	}{
    25  		{
    26  			options: types.EventsOptions{
    27  				Since: "2006-01-02TZ",
    28  			},
    29  			expectedError: `parsing time "2006-01-02TZ"`,
    30  		},
    31  		{
    32  			options: types.EventsOptions{
    33  				Until: "2006-01-02TZ",
    34  			},
    35  			expectedError: `parsing time "2006-01-02TZ"`,
    36  		},
    37  	}
    38  	for _, e := range errorCases {
    39  		client := &Client{
    40  			client: newMockClient(errorMock(http.StatusInternalServerError, "Server error")),
    41  		}
    42  		_, errs := client.Events(context.Background(), e.options)
    43  		err := <-errs
    44  		if err == nil || !strings.Contains(err.Error(), e.expectedError) {
    45  			t.Fatalf("expected an error %q, got %v", e.expectedError, err)
    46  		}
    47  	}
    48  }
    49  
    50  func TestEventsErrorFromServer(t *testing.T) {
    51  	client := &Client{
    52  		client: newMockClient(errorMock(http.StatusInternalServerError, "Server error")),
    53  	}
    54  	_, errs := client.Events(context.Background(), types.EventsOptions{})
    55  	err := <-errs
    56  	if err == nil || err.Error() != "Error response from daemon: Server error" {
    57  		t.Fatalf("expected a Server Error, got %v", err)
    58  	}
    59  }
    60  
    61  func TestEvents(t *testing.T) {
    62  
    63  	expectedURL := "/events"
    64  
    65  	filters := filters.NewArgs()
    66  	filters.Add("type", events.ContainerEventType)
    67  	expectedFiltersJSON := fmt.Sprintf(`{"type":{"%s":true}}`, events.ContainerEventType)
    68  
    69  	eventsCases := []struct {
    70  		options             types.EventsOptions
    71  		events              []events.Message
    72  		expectedEvents      map[string]bool
    73  		expectedQueryParams map[string]string
    74  	}{
    75  		{
    76  			options: types.EventsOptions{
    77  				Filters: filters,
    78  			},
    79  			expectedQueryParams: map[string]string{
    80  				"filters": expectedFiltersJSON,
    81  			},
    82  			events:         []events.Message{},
    83  			expectedEvents: make(map[string]bool),
    84  		},
    85  		{
    86  			options: types.EventsOptions{
    87  				Filters: filters,
    88  			},
    89  			expectedQueryParams: map[string]string{
    90  				"filters": expectedFiltersJSON,
    91  			},
    92  			events: []events.Message{
    93  				{
    94  					Type:   "container",
    95  					ID:     "1",
    96  					Action: "create",
    97  				},
    98  				{
    99  					Type:   "container",
   100  					ID:     "2",
   101  					Action: "die",
   102  				},
   103  				{
   104  					Type:   "container",
   105  					ID:     "3",
   106  					Action: "create",
   107  				},
   108  			},
   109  			expectedEvents: map[string]bool{
   110  				"1": true,
   111  				"2": true,
   112  				"3": true,
   113  			},
   114  		},
   115  	}
   116  
   117  	for _, eventsCase := range eventsCases {
   118  		client := &Client{
   119  			client: newMockClient(func(req *http.Request) (*http.Response, error) {
   120  				if !strings.HasPrefix(req.URL.Path, expectedURL) {
   121  					return nil, fmt.Errorf("Expected URL '%s', got '%s'", expectedURL, req.URL)
   122  				}
   123  				query := req.URL.Query()
   124  
   125  				for key, expected := range eventsCase.expectedQueryParams {
   126  					actual := query.Get(key)
   127  					if actual != expected {
   128  						return nil, fmt.Errorf("%s not set in URL query properly. Expected '%s', got %s", key, expected, actual)
   129  					}
   130  				}
   131  
   132  				buffer := new(bytes.Buffer)
   133  
   134  				for _, e := range eventsCase.events {
   135  					b, _ := json.Marshal(e)
   136  					buffer.Write(b)
   137  				}
   138  
   139  				return &http.Response{
   140  					StatusCode: http.StatusOK,
   141  					Body:       ioutil.NopCloser(buffer),
   142  				}, nil
   143  			}),
   144  		}
   145  
   146  		messages, errs := client.Events(context.Background(), eventsCase.options)
   147  
   148  	loop:
   149  		for {
   150  			select {
   151  			case err := <-errs:
   152  				if err != nil && err != io.EOF {
   153  					t.Fatal(err)
   154  				}
   155  
   156  				break loop
   157  			case e := <-messages:
   158  				_, ok := eventsCase.expectedEvents[e.ID]
   159  				if !ok {
   160  					t.Fatalf("event received not expected with action %s & id %s", e.Action, e.ID)
   161  				}
   162  			}
   163  		}
   164  	}
   165  }