Move retry and lhttp packages from client/internal to common/.

client/internal/retry/retry_test.go

-// Copyright 2015 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-package retry
-
-import (
-        "errors"
-        "testing"
-        "time"
-
-        "github.com/maruel/ut"
-)
-
-func TestDoOnce(t *testing.T) {
-        c := &Config{1, 0, 0, 0}
-        r := &retriable{}
-        ut.AssertEqual(t, nil, c.Do(r))
-        ut.AssertEqual(t, 1, r.closed)
-        ut.AssertEqual(t, 1, r.tries)
-}
-
-func TestDoRetryExceeded(t *testing.T) {
-        c := &Config{1, 0, 0, 0}
-        r := &retriable{errs: []error{errRetry}}
-        ut.AssertEqual(t, errRetry, c.Do(r))
-        ut.AssertEqual(t, 1, r.closed)
-        ut.AssertEqual(t, 1, r.tries)
-}
-
-func TestDoRetry(t *testing.T) {
-        c := &Config{2, 0, time.Millisecond, 0}
-        r := &retriable{errs: []error{errRetry}}
-        ut.AssertEqual(t, nil, c.Do(r))
-        ut.AssertEqual(t, 1, r.closed)
-        ut.AssertEqual(t, 2, r.tries)
-}
-
-func TestError(t *testing.T) {
-        ut.AssertEqual(t, "please try again", errRetry.Error())
-}
-
-// Private details.
-
-var errYo = errors.New("yo")
-var errRetry = Error{errors.New("please try again")}
-
-type retriable struct {
-        closed int
-        tries  int
-        errs   []error
-}
-
-func (r *retriable) Close() error {
-        r.closed++
-        if r.closed > 1 {
-                return errYo
-        }
-        return nil
-}
-
-func (r *retriable) Do() error {
-        r.tries++
-        if len(r.errs) != 0 {
-                err := r.errs[0]
-                r.errs = r.errs[1:]
-                return err
-        }
-        return nil
-}