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package server
import (
"crypto/ed25519"
"sync"
"testing"
"time"
gossh "golang.org/x/crypto/ssh"
)
func TestAuthKeyStoreAddHasRemove(t *testing.T) {
store := NewAuthKeyStore(time.Hour, 5)
key := testPublicKey(t, 1)
if store.Has("alice", key) {
t.Fatalf("Store should not contain key before add")
}
store.Add("alice", key)
if !store.Has("alice", key) {
t.Fatalf("Store should contain key after add")
}
store.Remove("alice", key)
if store.Has("alice", key) {
t.Fatalf("Store should not contain key after remove")
}
}
func TestAuthKeyStoreHasExpiresKeysLazily(t *testing.T) {
now := time.Date(2026, 3, 3, 10, 0, 0, 0, time.UTC)
store := newAuthKeyStoreWithClock(10*time.Second, 5, func() time.Time { return now })
key := testPublicKey(t, 2)
store.Add("alice", key)
if !store.Has("alice", key) {
t.Fatalf("Store should contain fresh key")
}
now = now.Add(11 * time.Second)
if store.Has("alice", key) {
t.Fatalf("Store should expire key when ttl is exceeded")
}
store.mu.RLock()
defer store.mu.RUnlock()
if len(store.keysByUser["alice"]) != 0 {
t.Fatalf("Expired entries should be removed on Has call")
}
}
func TestAuthKeyStoreEnforcesPerUserKeyLimit(t *testing.T) {
now := time.Date(2026, 3, 3, 10, 0, 0, 0, time.UTC)
store := newAuthKeyStoreWithClock(time.Hour, 2, func() time.Time { return now })
keyOne := testPublicKey(t, 3)
keyTwo := testPublicKey(t, 4)
keyThree := testPublicKey(t, 5)
store.Add("alice", keyOne)
now = now.Add(1 * time.Second)
store.Add("alice", keyTwo)
now = now.Add(1 * time.Second)
store.Add("alice", keyThree)
if store.Has("alice", keyOne) {
t.Fatalf("Oldest key should be evicted once max key limit is reached")
}
if !store.Has("alice", keyTwo) {
t.Fatalf("Second key should remain in store")
}
if !store.Has("alice", keyThree) {
t.Fatalf("Newest key should remain in store")
}
}
func TestAuthKeyStoreAddRefreshesExistingKey(t *testing.T) {
now := time.Date(2026, 3, 3, 10, 0, 0, 0, time.UTC)
store := newAuthKeyStoreWithClock(10*time.Second, 5, func() time.Time { return now })
key := testPublicKey(t, 6)
store.Add("alice", key)
now = now.Add(9 * time.Second)
store.Add("alice", key)
now = now.Add(5 * time.Second)
if !store.Has("alice", key) {
t.Fatalf("Key should stay valid after it is refreshed")
}
now = now.Add(6 * time.Second)
if store.Has("alice", key) {
t.Fatalf("Refreshed key should expire once ttl is exceeded from latest add")
}
}
func TestAuthKeyStoreUserIsolation(t *testing.T) {
store := NewAuthKeyStore(time.Hour, 5)
key := testPublicKey(t, 7)
store.Add("alice", key)
if store.Has("bob", key) {
t.Fatalf("Key lookup must be isolated by user")
}
}
func TestAuthKeyStoreIgnoresInvalidInput(t *testing.T) {
store := NewAuthKeyStore(time.Hour, 5)
key := testPublicKey(t, 8)
store.Add("", key)
store.Add("alice", nil)
store.Remove("", key)
store.Remove("alice", nil)
if store.Has("", key) {
t.Fatalf("Empty user should not match")
}
if store.Has("alice", nil) {
t.Fatalf("Nil key should not match")
}
}
func TestAuthKeyStoreConcurrentAccess(t *testing.T) {
store := NewAuthKeyStore(time.Hour, 5)
users := []string{"alice", "bob", "carol"}
keys := []gossh.PublicKey{
testPublicKey(t, 11),
testPublicKey(t, 12),
testPublicKey(t, 13),
testPublicKey(t, 14),
}
var wg sync.WaitGroup
for worker := 0; worker < 32; worker++ {
wg.Add(1)
go func(workerID int) {
defer wg.Done()
user := users[workerID%len(users)]
for i := 0; i < 200; i++ {
key := keys[(workerID+i)%len(keys)]
store.Add(user, key)
_ = store.Has(user, key)
if i%3 == 0 {
store.Remove(user, key)
}
}
}(worker)
}
wg.Wait()
store.mu.RLock()
defer store.mu.RUnlock()
for user, userEntries := range store.keysByUser {
if len(userEntries) > store.maxKeysPerUser {
t.Fatalf("User %s exceeded max key limit: %d", user, len(userEntries))
}
}
}
func testPublicKey(t *testing.T, seedByte byte) gossh.PublicKey {
t.Helper()
seed := make([]byte, ed25519.SeedSize)
for i := range seed {
seed[i] = seedByte
}
privateKey := ed25519.NewKeyFromSeed(seed)
publicKey, err := gossh.NewPublicKey(privateKey.Public())
if err != nil {
t.Fatalf("Unable to build ssh public key: %s", err.Error())
}
return publicKey
}
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