fix(actions): never show negative running durations (#39322)

models/actions/utils.go

@@ -87,7 +87,7 @@ func calculateDuration(started, stopped timeutil.TimeStamp, status Status, fallb
 		}
 		return end.AsTime().Sub(s)
 	}
-	return timeSince(s).Truncate(time.Second)
+	return max(timeSince(s), 0).Truncate(time.Second)
 }
 
 // best effort function to convert an action schedule to action run, to be used in GenerateGiteaContext

models/actions/utils_test.go

@@ -73,6 +73,14 @@ func Test_calculateDuration(t *testing.T) {
 			},
 			want: 500 * time.Second,
 		},
+		{
+			name: "running started in the future",
+			args: args{
+				started: 1005,
+				status:  StatusRunning,
+			},
+			want: 0,
+		},
 		{
 			name: "done",
 			args: args{