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| 1 // Copyright 2015 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 package memory | |
| 6 | |
| 7 import ( | |
| 8 "testing" | |
| 9 "time" | |
| 10 | |
| 11 "github.com/luci/gae" | |
| 12 "github.com/luci/luci-go/common/clock/testclock" | |
| 13 . "github.com/smartystreets/goconvey/convey" | |
| 14 "golang.org/x/net/context" | |
| 15 ) | |
| 16 | |
| 17 func TestMemcache(t *testing.T) { | |
| 18 t.Parallel() | |
| 19 | |
| 20 Convey("memcache", t, func() { | |
| 21 now := time.Date(2015, 1, 1, 0, 0, 0, 0, time.UTC) | |
| 22 c, tc := testclock.UseTime(context.Background(), now) | |
| 23 c = Use(c) | |
| 24 mc := gae.GetMC(c) | |
| 25 | |
| 26 Convey("implements MCSingleReadWriter", func() { | |
| 27 Convey("Add", func() { | |
| 28 itm := &mcItem{ | |
| 29 key: "sup", | |
| 30 value: []byte("cool"), | |
| 31 expiration: time.Second, | |
| 32 } | |
| 33 err := mc.Add(itm) | |
| 34 So(err, ShouldBeNil) | |
| 35 Convey("which rejects objects already there", fu
nc() { | |
| 36 err := mc.Add(itm) | |
| 37 So(err, ShouldEqual, gae.ErrMCNotStored) | |
| 38 }) | |
| 39 }) | |
| 40 | |
| 41 Convey("Get", func() { | |
| 42 itm := &mcItem{ | |
| 43 key: "sup", | |
| 44 value: []byte("cool"), | |
| 45 expiration: time.Second, | |
| 46 } | |
| 47 err := mc.Add(itm) | |
| 48 So(err, ShouldBeNil) | |
| 49 | |
| 50 testItem := &mcItem{ | |
| 51 key: "sup", | |
| 52 value: []byte("cool"), | |
| 53 CasID: 1, | |
| 54 } | |
| 55 i, err := mc.Get("sup") | |
| 56 So(err, ShouldBeNil) | |
| 57 So(i, ShouldResemble, testItem) | |
| 58 | |
| 59 Convey("which can expire", func() { | |
| 60 tc.Add(time.Second * 4) | |
| 61 i, err := mc.Get("sup") | |
| 62 So(err, ShouldEqual, gae.ErrMCCacheMiss) | |
| 63 So(i, ShouldBeNil) | |
| 64 }) | |
| 65 }) | |
| 66 | |
| 67 Convey("Delete", func() { | |
| 68 Convey("works if it's there", func() { | |
| 69 itm := &mcItem{ | |
| 70 key: "sup", | |
| 71 value: []byte("cool"), | |
| 72 expiration: time.Second, | |
| 73 } | |
| 74 err := mc.Add(itm) | |
| 75 So(err, ShouldBeNil) | |
| 76 | |
| 77 err = mc.Delete("sup") | |
| 78 So(err, ShouldBeNil) | |
| 79 | |
| 80 i, err := mc.Get("sup") | |
| 81 So(err, ShouldEqual, gae.ErrMCCacheMiss) | |
| 82 So(i, ShouldBeNil) | |
| 83 }) | |
| 84 | |
| 85 Convey("but not if it's not there", func() { | |
| 86 err := mc.Delete("sup") | |
| 87 So(err, ShouldEqual, gae.ErrMCCacheMiss) | |
| 88 }) | |
| 89 }) | |
| 90 | |
| 91 Convey("Set", func() { | |
| 92 itm := &mcItem{ | |
| 93 key: "sup", | |
| 94 value: []byte("cool"), | |
| 95 expiration: time.Second, | |
| 96 } | |
| 97 err := mc.Add(itm) | |
| 98 So(err, ShouldBeNil) | |
| 99 | |
| 100 itm.SetValue([]byte("newp")) | |
| 101 err = mc.Set(itm) | |
| 102 So(err, ShouldBeNil) | |
| 103 | |
| 104 testItem := &mcItem{ | |
| 105 key: "sup", | |
| 106 value: []byte("newp"), | |
| 107 CasID: 2, | |
| 108 } | |
| 109 i, err := mc.Get("sup") | |
| 110 So(err, ShouldBeNil) | |
| 111 So(i, ShouldResemble, testItem) | |
| 112 }) | |
| 113 | |
| 114 Convey("CompareAndSwap", func() { | |
| 115 itm := gae.MCItem(&mcItem{ | |
| 116 key: "sup", | |
| 117 value: []byte("cool"), | |
| 118 expiration: time.Second * 2, | |
| 119 }) | |
| 120 err := mc.Add(itm) | |
| 121 So(err, ShouldBeNil) | |
| 122 | |
| 123 Convey("works after a Get", func() { | |
| 124 itm, err = mc.Get("sup") | |
| 125 So(err, ShouldBeNil) | |
| 126 So(itm.(*mcItem).CasID, ShouldEqual, 1) | |
| 127 | |
| 128 itm.SetValue([]byte("newp")) | |
| 129 err = mc.CompareAndSwap(itm) | |
| 130 So(err, ShouldBeNil) | |
| 131 }) | |
| 132 | |
| 133 Convey("but fails if you don't", func() { | |
| 134 itm.SetValue([]byte("newp")) | |
| 135 err = mc.CompareAndSwap(itm) | |
| 136 So(err, ShouldEqual, gae.ErrMCCASConflic
t) | |
| 137 }) | |
| 138 | |
| 139 Convey("and fails if the item is expired/gone",
func() { | |
| 140 tc.Add(3 * time.Second) | |
| 141 itm.SetValue([]byte("newp")) | |
| 142 err = mc.CompareAndSwap(itm) | |
| 143 So(err, ShouldEqual, gae.ErrMCNotStored) | |
| 144 }) | |
| 145 }) | |
| 146 }) | |
| 147 | |
| 148 Convey("check that the internal implementation is sane", func()
{ | |
| 149 curTime := now | |
| 150 err := mc.Add(&mcItem{ | |
| 151 key: "sup", | |
| 152 value: []byte("cool"), | |
| 153 expiration: time.Second * 2, | |
| 154 }) | |
| 155 | |
| 156 mci := mc.(*memcacheImpl) | |
| 157 | |
| 158 So(err, ShouldBeNil) | |
| 159 So(len(mci.data.items), ShouldEqual, 1) | |
| 160 So(mci.data.casID, ShouldEqual, 1) | |
| 161 So(mci.data.items["sup"], ShouldResemble, &mcItem{ | |
| 162 key: "sup", | |
| 163 value: []byte("cool"), | |
| 164 expiration: time.Duration(curTime.Add(time.Secon
d * 2).UnixNano()), | |
| 165 CasID: 1, | |
| 166 }) | |
| 167 | |
| 168 el, err := mc.Get("sup") | |
| 169 So(err, ShouldBeNil) | |
| 170 So(len(mci.data.items), ShouldEqual, 1) | |
| 171 So(mci.data.casID, ShouldEqual, 1) | |
| 172 | |
| 173 testItem := &mcItem{ | |
| 174 key: "sup", | |
| 175 value: []byte("cool"), | |
| 176 CasID: 1, | |
| 177 } | |
| 178 So(el, ShouldResemble, testItem) | |
| 179 }) | |
| 180 | |
| 181 }) | |
| 182 } | |
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