feat: export Statistics.Add

cron.go

@@ -130,7 +130,7 @@ func (c *Cron) Hostname() string {
 func (c *Cron) Statistics() Statistics {
 	ret := Statistics{}
 	for _, j := range c.jobs {
-		ret.add(j.statistics)
+		ret = ret.Add(j.statistics)
 	}
 	return ret
 }

statistics.go

@@ -14,7 +14,8 @@ type Statistics struct {
 	RetriedRun int64
 }
 
-func (s *Statistics) add(delta Statistics) {
+// Add return a new Statistics with two added.
+func (s Statistics) Add(delta Statistics) Statistics {
 	s.TotalTask += delta.TotalTask
 	s.PassedTask += delta.PassedTask
 	s.FailedTask += delta.FailedTask
@@ -24,4 +25,5 @@ func (s *Statistics) add(delta Statistics) {
 	s.PassedRun += delta.PassedRun
 	s.FailedRun += delta.FailedRun
 	s.RetriedRun += delta.RetriedRun
+	return s
 }

statistics_test.go

@@ -0,0 +1,86 @@
+package dcron
+
+import (
+	"reflect"
+	"testing"
+)
+
+func TestStatistics_Add(t *testing.T) {
+	type fields struct {
+		TotalTask   int64
+		PassedTask  int64
+		FailedTask  int64
+		SkippedTask int64
+		MissedTask  int64
+		TotalRun    int64
+		PassedRun   int64
+		FailedRun   int64
+		RetriedRun  int64
+	}
+	type args struct {
+		delta Statistics
+	}
+	tests := []struct {
+		name   string
+		fields fields
+		args   args
+		want   Statistics
+	}{
+		{
+			name: "regular",
+			fields: fields{
+				TotalTask:   1,
+				PassedTask:  2,
+				FailedTask:  3,
+				SkippedTask: 4,
+				MissedTask:  5,
+				TotalRun:    6,
+				PassedRun:   7,
+				FailedRun:   8,
+				RetriedRun:  9,
+			},
+			args: args{
+				delta: Statistics{
+					TotalTask:   1,
+					PassedTask:  2,
+					FailedTask:  3,
+					SkippedTask: 4,
+					MissedTask:  5,
+					TotalRun:    6,
+					PassedRun:   7,
+					FailedRun:   8,
+					RetriedRun:  9,
+				},
+			},
+			want: Statistics{
+				TotalTask:   2,
+				PassedTask:  4,
+				FailedTask:  6,
+				SkippedTask: 8,
+				MissedTask:  10,
+				TotalRun:    12,
+				PassedRun:   14,
+				FailedRun:   16,
+				RetriedRun:  18,
+			},
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			s := Statistics{
+				TotalTask:   tt.fields.TotalTask,
+				PassedTask:  tt.fields.PassedTask,
+				FailedTask:  tt.fields.FailedTask,
+				SkippedTask: tt.fields.SkippedTask,
+				MissedTask:  tt.fields.MissedTask,
+				TotalRun:    tt.fields.TotalRun,
+				PassedRun:   tt.fields.PassedRun,
+				FailedRun:   tt.fields.FailedRun,
+				RetriedRun:  tt.fields.RetriedRun,
+			}
+			if got := s.Add(tt.args.delta); !reflect.DeepEqual(got, tt.want) {
+				t.Errorf("Add() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}