vendor: update moby to ed7b6428

Signed-off-by: Tonis Tiigi <tonistiigi@gmail.com>

vendor/github.com/docker/docker/pkg/jsonmessage/jsonmessage.go

@@ -40,21 +40,17 @@ type JSONProgress struct {
 	// If true, don't show xB/yB
 	HideCounts bool   `json:"hidecounts,omitempty"`
 	Units      string `json:"units,omitempty"`
+	nowFunc    func() time.Time
+	winSize    int
 }
 
 func (p *JSONProgress) String() string {
 	var (
-		width       = 200
+		width       = p.width()
 		pbBox       string
 		numbersBox  string
 		timeLeftBox string
 	)
-
-	ws, err := term.GetWinsize(p.terminalFd)
-	if err == nil {
-		width = int(ws.Width)
-	}
-
 	if p.Current <= 0 && p.Total <= 0 {
 		return ""
 	}
@@ -103,7 +99,7 @@ func (p *JSONProgress) String() string {
 	}
 
 	if p.Current > 0 && p.Start > 0 && percentage < 50 {
-		fromStart := time.Now().UTC().Sub(time.Unix(p.Start, 0))
+		fromStart := p.now().Sub(time.Unix(p.Start, 0))
 		perEntry := fromStart / time.Duration(p.Current)
 		left := time.Duration(p.Total-p.Current) * perEntry
 		left = (left / time.Second) * time.Second
@@ -115,6 +111,28 @@ func (p *JSONProgress) String() string {
 	return pbBox + numbersBox + timeLeftBox
 }
 
+// shim for testing
+func (p *JSONProgress) now() time.Time {
+	if p.nowFunc == nil {
+		p.nowFunc = func() time.Time {
+			return time.Now().UTC()
+		}
+	}
+	return p.nowFunc()
+}
+
+// shim for testing
+func (p *JSONProgress) width() int {
+	if p.winSize != 0 {
+		return p.winSize
+	}
+	ws, err := term.GetWinsize(p.terminalFd)
+	if err == nil {
+		return int(ws.Width)
+	}
+	return 200
+}
+
 // JSONMessage defines a message struct. It describes
 // the created time, where it from, status, ID of the
 // message. It's used for docker events.