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//go:build integration
package chat
import (
"context"
"strconv"
"testing"
"time"
"github.com/google/uuid"
"github.com/mediocregopher/mediocre-go-lib/v2/mlog"
"github.com/mediocregopher/radix/v4"
"github.com/stretchr/testify/assert"
)
const roomTestHarnessMaxMsgs = 10
type roomTestHarness struct {
ctx context.Context
room Room
allMsgs []Message
}
func (h *roomTestHarness) newMsg(t *testing.T) Message {
msg, err := h.room.Append(h.ctx, Message{
UserID: UserID{
Name: uuid.New().String(),
Hash: "0000",
},
Body: uuid.New().String(),
})
assert.NoError(t, err)
t.Logf("appended message %s", msg.ID)
h.allMsgs = append([]Message{msg}, h.allMsgs...)
if len(h.allMsgs) > roomTestHarnessMaxMsgs {
h.allMsgs = h.allMsgs[:roomTestHarnessMaxMsgs]
}
return msg
}
func newRoomTestHarness(t *testing.T) *roomTestHarness {
ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
t.Cleanup(cancel)
redis, err := radix.Dial(ctx, "tcp", "127.0.0.1:6379")
assert.NoError(t, err)
t.Cleanup(func() { redis.Close() })
roomParams := RoomParams{
Logger: mlog.NewLogger(nil),
Redis: redis,
ID: uuid.New().String(),
MaxMessages: roomTestHarnessMaxMsgs,
}
t.Logf("creating test Room %q", roomParams.ID)
room, err := NewRoom(ctx, roomParams)
assert.NoError(t, err)
t.Cleanup(func() {
err := redis.Do(context.Background(), radix.Cmd(
nil, "DEL", roomParams.streamKey(),
))
assert.NoError(t, err)
})
return &roomTestHarness{ctx: ctx, room: room}
}
func TestRoom(t *testing.T) {
t.Run("history", func(t *testing.T) {
tests := []struct {
numMsgs int
limit int
}{
{numMsgs: 0, limit: 1},
{numMsgs: 1, limit: 1},
{numMsgs: 2, limit: 1},
{numMsgs: 2, limit: 10},
{numMsgs: 9, limit: 2},
{numMsgs: 9, limit: 3},
{numMsgs: 9, limit: 4},
{numMsgs: 15, limit: 3},
}
for i, test := range tests {
t.Run(strconv.Itoa(i), func(t *testing.T) {
t.Logf("test: %+v", test)
h := newRoomTestHarness(t)
for j := 0; j < test.numMsgs; j++ {
h.newMsg(t)
}
var gotMsgs []Message
var cursor string
for {
var msgs []Message
var err error
cursor, msgs, err = h.room.History(h.ctx, HistoryOpts{
Cursor: cursor,
Limit: test.limit,
})
assert.NoError(t, err)
assert.NotEmpty(t, cursor)
if len(msgs) == 0 {
break
}
gotMsgs = append(gotMsgs, msgs...)
}
assert.Equal(t, h.allMsgs, gotMsgs)
})
}
})
assertNextMsg := func(
t *testing.T, expMsg Message,
ctx context.Context, it MessageIterator,
) {
t.Helper()
gotMsg, err := it.Next(ctx)
assert.NoError(t, err)
assert.Equal(t, expMsg, gotMsg)
}
t.Run("listen/already_populated", func(t *testing.T) {
h := newRoomTestHarness(t)
msgA, msgB, msgC := h.newMsg(t), h.newMsg(t), h.newMsg(t)
_ = msgA
_ = msgB
itFoo, err := h.room.Listen(h.ctx, msgC.ID)
assert.NoError(t, err)
defer itFoo.Close()
itBar, err := h.room.Listen(h.ctx, msgA.ID)
assert.NoError(t, err)
defer itBar.Close()
msgD := h.newMsg(t)
// itBar should get msgB and msgC before anything else.
assertNextMsg(t, msgB, h.ctx, itBar)
assertNextMsg(t, msgC, h.ctx, itBar)
// now both iterators should give msgD
assertNextMsg(t, msgD, h.ctx, itFoo)
assertNextMsg(t, msgD, h.ctx, itBar)
// timeout should be honored
{
timeoutCtx, timeoutCancel := context.WithTimeout(h.ctx, 1*time.Second)
_, errFoo := itFoo.Next(timeoutCtx)
_, errBar := itBar.Next(timeoutCtx)
timeoutCancel()
assert.ErrorIs(t, errFoo, context.DeadlineExceeded)
assert.ErrorIs(t, errBar, context.DeadlineExceeded)
}
// new message should work
{
expMsg := h.newMsg(t)
timeoutCtx, timeoutCancel := context.WithTimeout(h.ctx, 1*time.Second)
gotFooMsg, errFoo := itFoo.Next(timeoutCtx)
gotBarMsg, errBar := itBar.Next(timeoutCtx)
timeoutCancel()
assert.Equal(t, expMsg, gotFooMsg)
assert.NoError(t, errFoo)
assert.Equal(t, expMsg, gotBarMsg)
assert.NoError(t, errBar)
}
})
t.Run("listen/empty", func(t *testing.T) {
h := newRoomTestHarness(t)
it, err := h.room.Listen(h.ctx, "")
assert.NoError(t, err)
defer it.Close()
msg := h.newMsg(t)
assertNextMsg(t, msg, h.ctx, it)
})
}
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