package retry_test import ( "errors" "testing" "time" . "v2ray.com/core/common/retry" "v2ray.com/core/testing/assert" ) var ( errorTestOnly = errors.New("This is a fake error.") ) func TestNoRetry(t *testing.T) { assert := assert.On(t) startTime := time.Now().Unix() err := Timed(10, 100000).On(func() error { return nil }) endTime := time.Now().Unix() assert.Error(err).IsNil() assert.Int64(endTime - startTime).AtLeast(0) } func TestRetryOnce(t *testing.T) { assert := assert.On(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) assert.Error(err).IsNil() assert.Int64(int64(duration / time.Millisecond)).AtLeast(900) } func TestRetryMultiple(t *testing.T) { assert := assert.On(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) assert.Error(err).IsNil() assert.Int64(int64(duration / time.Millisecond)).AtLeast(4900) } func TestRetryExhausted(t *testing.T) { assert := assert.On(t) startTime := time.Now() called := 0 err := Timed(2, 1000).On(func() error { if called < 5 { called++ return errorTestOnly } return nil }) duration := time.Since(startTime) assert.Error(err).Equals(ErrRetryFailed) assert.Int64(int64(duration / time.Millisecond)).AtLeast(1900) }