git.scottworley.com Git - reliable-chat/blob - server/server_test.go

   1 /*  reliable-chat - multipath chat
   2  *  Copyright (C) 2012  Scott Worley <sworley@chkno.net>
   3  *
   4  *  This program is free software: you can redistribute it and/or modify
   5  *  it under the terms of the GNU Affero General Public License as
   6  *  published by the Free Software Foundation, either version 3 of the
   7  *  License, or (at your option) any later version.
   8  *
   9  *  This program is distributed in the hope that it will be useful,
  10  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  *  GNU Affero General Public License for more details.
  13  *
  14  *  You should have received a copy of the GNU Affero General Public License
  15  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16  */
  17
  18 package main
  19
  20 import "testing"
  21 import "runtime"
  22 import "strconv"
  23 import "time"
  24
  25 func expectMessage(t *testing.T, m *Message, at time.Time, id, say string) {
  26         if m.Time != at {
  27                 t.Fail()
  28         }
  29         if m.ID != id {
  30                 t.Fail()
  31         }
  32         if m.Text != say {
  33                 t.Fail()
  34         }
  35 }
  36
  37 func TestMessageInsertAndRetreive(t *testing.T) {
  38         id := "1"
  39         say := "'Ello, Mister Polly Parrot!"
  40         at := time.Now()
  41         var zero_time time.Time
  42         store := start_store()
  43         store.Add <- &Message{at, id, say}
  44         messages_from_store := make(chan []Message, 1)
  45         store.Get <- &StoreRequest{zero_time, messages_from_store}
  46         messages := <-messages_from_store
  47         if len(messages) != 1 {
  48                 t.FailNow()
  49         }
  50         expectMessage(t, &messages[0], at, id, say)
  51         close(store.Get)
  52         close(store.Add)
  53 }
  54
  55 func TestFetchBlocksUntilSpeak(t *testing.T) {
  56         start_fetch_wait_count := fetch_wait_count.String()
  57         id := "2"
  58         say := "I've got a lovely fresh cuttle fish for you"
  59         at := time.Now()
  60         var zero_time time.Time
  61         store := start_store()
  62         messages_from_store := make(chan []Message, 1)
  63         store.Get <- &StoreRequest{zero_time, messages_from_store}
  64         for start_fetch_wait_count == fetch_wait_count.String() {
  65                 runtime.Gosched()
  66         }
  67         store.Add <- &Message{at, id, say}
  68         messages := <-messages_from_store
  69         if len(messages) != 1 {
  70                 t.FailNow()
  71         }
  72         expectMessage(t, &messages[0], at, id, say)
  73         close(store.Get)
  74         close(store.Add)
  75 }
  76
  77 func TestMultipleListeners(t *testing.T) {
  78         id := "3"
  79         say := "This is your nine o'clock alarm call!"
  80         at := time.Now()
  81         var zero_time time.Time
  82         store := start_store()
  83         const num_clients = 13
  84         var messages_from_store [num_clients]chan []Message
  85         for i := 0; i < num_clients; i++ {
  86                 messages_from_store[i] = make(chan []Message, 1)
  87                 store.Get <- &StoreRequest{zero_time, messages_from_store[i]}
  88         }
  89         store.Add <- &Message{at, id, say}
  90         for i := 0; i < num_clients; i++ {
  91                 messages := <-messages_from_store[i]
  92                 if len(messages) != 1 {
  93                         t.FailNow()
  94                 }
  95                 expectMessage(t, &messages[0], at, id, say)
  96         }
  97         close(store.Get)
  98         close(store.Add)
  99 }
 100
 101 func parseDuration(s string) time.Duration {
 102         d, err := time.ParseDuration(s)
 103         if err != nil {
 104                 panic(err)
 105         }
 106         return d
 107 }
 108
 109 func atoi(s string) int {
 110         i, err := strconv.Atoi(s)
 111         if err != nil {
 112                 panic(err)
 113         }
 114         return i
 115 }
 116
 117 func TestPartialRetreive(t *testing.T) {
 118         start_speak_count := atoi(speak_count.String())
 119         id1 := "4"
 120         id2 := "5"
 121         id3 := "6"
 122         say1 := "No, no.....No, 'e's stunned!"
 123         say2 := "You stunned him, just as he was wakin' up!"
 124         say3 := "Norwegian Blues stun easily, major."
 125         base := time.Now()
 126         at1 := base.Add(parseDuration("-4m"))
 127         since := base.Add(parseDuration("-3m"))
 128         at2 := base.Add(parseDuration("-2m"))
 129         at3 := base.Add(parseDuration("-1m"))
 130         store := start_store()
 131         store.Add <- &Message{at1, id1, say1}
 132         store.Add <- &Message{at2, id2, say2}
 133         store.Add <- &Message{at3, id3, say3}
 134         for atoi(speak_count.String()) != start_speak_count+3 {
 135                 runtime.Gosched()
 136         }
 137         messages_from_store := make(chan []Message, 1)
 138         store.Get <- &StoreRequest{since, messages_from_store}
 139         messages := <-messages_from_store
 140         if len(messages) != 2 {
 141                 t.FailNow()
 142         }
 143         expectMessage(t, &messages[0], at2, id2, say2)
 144         expectMessage(t, &messages[1], at3, id3, say3)
 145         close(store.Get)
 146         close(store.Add)
 147 }
 148
 149 func TestPrecisePartialRetreive(t *testing.T) {
 150         start_speak_count := atoi(speak_count.String())
 151         id1 := "7"
 152         id2 := "8"
 153         id3 := "9"
 154         say1 := "Well, he's...he's, ah...probably pining for the fjords."
 155         say2 := "PININ' for the FJORDS?!?!?!?"
 156         say3 := "look, why did he fall flat on his back the moment I got 'im home?"
 157         base := time.Now()
 158         at1 := base.Add(parseDuration("-3m"))
 159         at2 := base.Add(parseDuration("-2m"))
 160         at3 := base.Add(parseDuration("-1m"))
 161         since := at2
 162         store := start_store()
 163         store.Add <- &Message{at1, id1, say1}
 164         store.Add <- &Message{at2, id2, say2}
 165         store.Add <- &Message{at3, id3, say3}
 166         for atoi(speak_count.String()) != start_speak_count+3 {
 167                 runtime.Gosched()
 168         }
 169         messages_from_store := make(chan []Message, 1)
 170         store.Get <- &StoreRequest{since, messages_from_store}
 171         messages := <-messages_from_store
 172         if len(messages) != 1 {
 173                 t.FailNow()
 174         }
 175         expectMessage(t, &messages[0], at3, id3, say3)
 176         close(store.Get)
 177         close(store.Add)
 178 }
 179
 180 func TestTypicalFlow(t *testing.T) {
 181         id1 := "10"
 182         id2 := "11"
 183         say1 := "The Norwegian Blue prefers kippin' on it's back!"
 184         say2 := "Remarkable bird, innit, squire?  Lovely plumage!"
 185         store := start_store()
 186
 187         // A waiting zero-time fetch.
 188         var zero_time time.Time
 189         prev_fetch_wait_count := fetch_wait_count.String()
 190         fetch1 := make(chan []Message, 1)
 191         store.Get <- &StoreRequest{zero_time, fetch1}
 192         for prev_fetch_wait_count == fetch_wait_count.String() {
 193                 runtime.Gosched()
 194         }
 195
 196         // Someone speaks.  This triggers delivery.
 197         at1 := time.Now()
 198         store.Add <- &Message{at1, id1, say1}
 199         messages1 := <-fetch1
 200         if len(messages1) != 1 {
 201                 t.FailNow()
 202         }
 203         expectMessage(t, &messages1[0], at1, id1, say1)
 204
 205         // Upon recipt, client blocks on fetch with since=at1
 206         prev_fetch_wait_count = fetch_wait_count.String()
 207         fetch2 := make(chan []Message, 1)
 208         store.Get <- &StoreRequest{at1, fetch2}
 209         for prev_fetch_wait_count == fetch_wait_count.String() {
 210                 runtime.Gosched()
 211         }
 212
 213         // Someone speaks again.  This triggers another delivery.
 214         at2 := time.Now()
 215         if !at2.After(at1) {
 216                 t.Fail()
 217         }
 218         store.Add <- &Message{at2, id2, say2}
 219         messages2 := <-fetch2
 220         if len(messages2) != 1 {
 221                 t.FailNow()
 222         }
 223         expectMessage(t, &messages2[0], at2, id2, say2)
 224
 225         close(store.Get)
 226         close(store.Add)
 227 }