Remove libs/clock in favor of luci-go/common/clock.

go/src/infra/libs/clock/clockflag/duration_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 clockflag
-
-import (
-        "encoding/json"
-        "flag"
-        "testing"
-        "time"
-
-        . "github.com/smartystreets/goconvey/convey"
-)
-
-func TestDuration(t *testing.T) {
-        t.Parallel()
-
-        Convey(`A Duration flag`, t, func() {
-                fs := flag.NewFlagSet("test", flag.ContinueOnError)
-                var d Duration
-                fs.Var(&d, "duration", "Test duration parameter.")
-
-                Convey(`Parses a 10-second Duration from "10s".`, func() {
-                        err := fs.Parse([]string{"-duration", "10s"})
-                        So(err, ShouldBeNil)
-                        So(d.Duration(), ShouldEqual, time.Second*10)
-                        So(d.IsZero(), ShouldBeFalse)
-                })
-
-                Convey(`Returns an error when parsing "10z".`, func() {
-                        err := fs.Parse([]string{"-duration", "10z"})
-                        So(err, ShouldNotBeNil)
-                })
-
-                Convey(`When treated as a JSON field`, func() {
-                        var s struct {
-                                D Duration `json:"duration"`
-                        }
-
-                        testJSON := `{"duration":10}`
-                        Convey(`Fails to unmarshal from `+testJSON+`.`, func() {
-                                testJSON := testJSON
-                                err := json.Unmarshal([]byte(testJSON), &s)
-                                So(err, ShouldNotBeNil)
-                        })
-
-                        Convey(`Marshals correctly to duration string.`, func() {
-                                testDuration := (5 * time.Second) + (2 * time.Minute)
-                                s.D = Duration(testDuration)
-                                testJSON, err := json.Marshal(&s)
-                                So(err, ShouldBeNil)
-                                So(string(testJSON), ShouldEqual, `{"duration":"2m5s"}`)
-
-                                Convey(`And Unmarshals correctly.`, func() {
-                                        s.D = Duration(0)
-                                        err := json.Unmarshal([]byte(testJSON), &s)
-                                        So(err, ShouldBeNil)
-                                        So(s.D.Duration(), ShouldEqual, testDuration)
-                                })
-                        })
-                })
-        })
-}