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package imap
import (
"sync"
"testing"
"time"
"github.com/stretchr/testify/assert"
)
func TestSeqMap(t *testing.T) {
var seqmap SeqMap
var uid uint32
var found bool
assert := assert.New(t)
assert.Equal(0, seqmap.Size())
_, found = seqmap.Get(42)
assert.Equal(false, found)
_, found = seqmap.Pop(0)
assert.Equal(false, found)
seqmap.Put(1, 1337)
seqmap.Put(2, 42)
seqmap.Put(3, 1107)
assert.Equal(3, seqmap.Size())
_, found = seqmap.Pop(0)
assert.Equal(false, found)
uid, found = seqmap.Get(1)
assert.Equal(uint32(1337), uid)
assert.Equal(true, found)
uid, found = seqmap.Pop(1)
assert.Equal(uint32(1337), uid)
assert.Equal(true, found)
assert.Equal(2, seqmap.Size())
// Repop the same seqnum should work because of the syncing
_, found = seqmap.Pop(1)
assert.Equal(true, found)
assert.Equal(1, seqmap.Size())
// sync means we already have a 1. This is replacing that UID so the size
// shouldn't increase
seqmap.Put(1, 7331)
assert.Equal(1, seqmap.Size())
seqmap.Clear()
assert.Equal(0, seqmap.Size())
var wg sync.WaitGroup
wg.Add(1)
go func() {
defer wg.Done()
time.Sleep(20 * time.Millisecond)
seqmap.Put(42, 1337)
time.Sleep(20 * time.Millisecond)
seqmap.Put(43, 1107)
}()
wg.Add(1)
go func() {
defer wg.Done()
for _, found := seqmap.Pop(43); !found; _, found = seqmap.Pop(43) {
time.Sleep(1 * time.Millisecond)
}
}()
wg.Add(1)
go func() {
defer wg.Done()
for _, found := seqmap.Pop(42); !found; _, found = seqmap.Pop(42) {
time.Sleep(1 * time.Millisecond)
}
}()
wg.Wait()
assert.Equal(0, seqmap.Size())
}
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