package client import ( "bytes" "fmt" "io/ioutil" "net/http" "strings" "testing" "golang.org/x/net/context" ) func TestContainerStatsError(t *testing.T) { client := &Client{ client: newMockClient(errorMock(http.StatusInternalServerError, "Server error")), } _, err := client.ContainerStats(context.Background(), "nothing", false) if err == nil || err.Error() != "Error response from daemon: Server error" { t.Fatalf("expected a Server Error, got %v", err) } } func TestContainerStats(t *testing.T) { expectedURL := "/containers/container_id/stats" cases := []struct { stream bool expectedStream string }{ { expectedStream: "0", }, { stream: true, expectedStream: "1", }, } for _, c := range cases { client := &Client{ client: newMockClient(func(r *http.Request) (*http.Response, error) { if !strings.HasPrefix(r.URL.Path, expectedURL) { return nil, fmt.Errorf("Expected URL '%s', got '%s'", expectedURL, r.URL) } query := r.URL.Query() stream := query.Get("stream") if stream != c.expectedStream { return nil, fmt.Errorf("stream not set in URL query properly. Expected '%s', got %s", c.expectedStream, stream) } return &http.Response{ StatusCode: http.StatusOK, Body: ioutil.NopCloser(bytes.NewReader([]byte("response"))), }, nil }), } resp, err := client.ContainerStats(context.Background(), "container_id", c.stream) if err != nil { t.Fatal(err) } defer resp.Body.Close() content, err := ioutil.ReadAll(resp.Body) if err != nil { t.Fatal(err) } if string(content) != "response" { t.Fatalf("expected response to contain 'response', got %s", string(content)) } } }