v1.0.0

common/retry/retry_test.go

@@ -0,0 +1,98 @@
+package retry_test
+
+import (
+	"testing"
+	"time"
+
+	"github.com/xtls/xray-core/v1/common"
+	"github.com/xtls/xray-core/v1/common/errors"
+	. "github.com/xtls/xray-core/v1/common/retry"
+)
+
+var (
+	errorTestOnly = errors.New("this is a fake error")
+)
+
+func TestNoRetry(t *testing.T) {
+	startTime := time.Now().Unix()
+	err := Timed(10, 100000).On(func() error {
+		return nil
+	})
+	endTime := time.Now().Unix()
+
+	common.Must(err)
+	if endTime < startTime {
+		t.Error("endTime < startTime: ", startTime, " -> ", endTime)
+	}
+}
+
+func TestRetryOnce(t *testing.T) {
+	startTime := time.Now()
+	called := 0
+	err := Timed(10, 1000).On(func() error {
+		if called == 0 {
+			called++
+			return errorTestOnly
+		}
+		return nil
+	})
+	duration := time.Since(startTime)
+
+	common.Must(err)
+	if v := int64(duration / time.Millisecond); v < 900 {
+		t.Error("duration: ", v)
+	}
+}
+
+func TestRetryMultiple(t *testing.T) {
+	startTime := time.Now()
+	called := 0
+	err := Timed(10, 1000).On(func() error {
+		if called < 5 {
+			called++
+			return errorTestOnly
+		}
+		return nil
+	})
+	duration := time.Since(startTime)
+
+	common.Must(err)
+	if v := int64(duration / time.Millisecond); v < 4900 {
+		t.Error("duration: ", v)
+	}
+}
+
+func TestRetryExhausted(t *testing.T) {
+	startTime := time.Now()
+	called := 0
+	err := Timed(2, 1000).On(func() error {
+		called++
+		return errorTestOnly
+	})
+	duration := time.Since(startTime)
+
+	if errors.Cause(err) != ErrRetryFailed {
+		t.Error("cause: ", err)
+	}
+
+	if v := int64(duration / time.Millisecond); v < 1900 {
+		t.Error("duration: ", v)
+	}
+}
+
+func TestExponentialBackoff(t *testing.T) {
+	startTime := time.Now()
+	called := 0
+	err := ExponentialBackoff(10, 100).On(func() error {
+		called++
+		return errorTestOnly
+	})
+	duration := time.Since(startTime)
+
+	if errors.Cause(err) != ErrRetryFailed {
+		t.Error("cause: ", err)
+	}
+	if v := int64(duration / time.Millisecond); v < 4000 {
+		t.Error("duration: ", v)
+	}
+}