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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)
uids := []uint32{1337, 42, 1107}
seqmap.Initialize(uids)
assert.Equal(3, seqmap.Size())
// Original list should remain unsorted
assert.Equal([]uint32{1337, 42, 1107}, uids)
_, found = seqmap.Pop(0)
assert.Equal(false, found)
uid, found = seqmap.Get(1)
assert.Equal(42, int(uid))
assert.Equal(true, found)
uid, found = seqmap.Pop(1)
assert.Equal(42, int(uid))
assert.Equal(true, found)
assert.Equal(2, seqmap.Size())
uid, found = seqmap.Get(1)
assert.Equal(1107, int(uid))
// Repeated puts of the same UID shouldn't change the size
seqmap.Put(1231)
assert.Equal(3, seqmap.Size())
seqmap.Put(1231)
assert.Equal(3, seqmap.Size())
uid, found = seqmap.Get(2)
assert.Equal(1231, int(uid))
_, found = seqmap.Pop(1)
assert.Equal(true, found)
assert.Equal(2, seqmap.Size())
seqmap.Initialize(nil)
assert.Equal(0, seqmap.Size())
var wg sync.WaitGroup
wg.Add(1)
go func() {
defer wg.Done()
seqmap.Initialize([]uint32{42, 1337})
}()
wg.Add(1)
go func() {
defer wg.Done()
for _, found := seqmap.Pop(1); !found; _, found = seqmap.Pop(1) {
time.Sleep(1 * time.Millisecond)
}
}()
wg.Add(1)
go func() {
defer wg.Done()
for _, found := seqmap.Pop(1); !found; _, found = seqmap.Pop(1) {
time.Sleep(1 * time.Millisecond)
}
}()
wg.Wait()
assert.Equal(0, seqmap.Size())
}
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