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package centrifuge
import (
"context"
"testing"
"github.com/stretchr/testify/require"
)
func TestKeyedHub_AddRemoveSubscriber(t *testing.T) {
t.Parallel()
hub := newKeyedHub()
node := defaultNodeNoHandlers()
defer func() { _ = node.Shutdown(context.Background()) }()
client := newTestClientV2(t, node, "user1")
hub.addSubscriber("key1", client)
require.True(t, hub.hasSubscriber("key1", client))
require.Equal(t, 1, hub.subscriberCount("key1"))
keyEmpty := hub.removeSubscriber("key1", client)
require.True(t, keyEmpty)
require.False(t, hub.hasSubscriber("key1", client))
require.Equal(t, 0, hub.subscriberCount("key1"))
}
func TestKeyedHub_MultipleKeys(t *testing.T) {
t.Parallel()
hub := newKeyedHub()
node := defaultNodeNoHandlers()
defer func() { _ = node.Shutdown(context.Background()) }()
client := newTestClientV2(t, node, "user1")
hub.addSubscriber("key1", client)
hub.addSubscriber("key2", client)
hub.addSubscriber("key3", client)
require.True(t, hub.hasSubscriber("key1", client))
require.True(t, hub.hasSubscriber("key2", client))
require.True(t, hub.hasSubscriber("key3", client))
keys := hub.allKeys()
require.Len(t, keys, 3)
require.Equal(t, 3, hub.numKeys())
}
func TestKeyedHub_MultipleSubscribers(t *testing.T) {
t.Parallel()
hub := newKeyedHub()
node := defaultNodeNoHandlers()
defer func() { _ = node.Shutdown(context.Background()) }()
client1 := newTestClientV2(t, node, "user1")
client2 := newTestClientV2(t, node, "user2")
client3 := newTestClientV2(t, node, "user3")
hub.addSubscriber("key1", client1)
hub.addSubscriber("key1", client2)
hub.addSubscriber("key1", client3)
require.Equal(t, 3, hub.subscriberCount("key1"))
// Remove one.
keyEmpty := hub.removeSubscriber("key1", client2)
require.False(t, keyEmpty)
require.Equal(t, 2, hub.subscriberCount("key1"))
require.False(t, hub.hasSubscriber("key1", client2))
require.True(t, hub.hasSubscriber("key1", client1))
require.True(t, hub.hasSubscriber("key1", client3))
}
func TestKeyedHub_SubscriberCount(t *testing.T) {
t.Parallel()
hub := newKeyedHub()
node := defaultNodeNoHandlers()
defer func() { _ = node.Shutdown(context.Background()) }()
require.Equal(t, 0, hub.subscriberCount("nonexistent"))
client := newTestClientV2(t, node, "user1")
hub.addSubscriber("key1", client)
require.Equal(t, 1, hub.subscriberCount("key1"))
}
func TestKeyedHub_AllKeys(t *testing.T) {
t.Parallel()
hub := newKeyedHub()
node := defaultNodeNoHandlers()
defer func() { _ = node.Shutdown(context.Background()) }()
require.Empty(t, hub.allKeys())
client := newTestClientV2(t, node, "user1")
hub.addSubscriber("alpha", client)
hub.addSubscriber("beta", client)
keys := hub.allKeys()
require.Len(t, keys, 2)
require.Contains(t, keys, "alpha")
require.Contains(t, keys, "beta")
}
func TestKeyedHub_RemoveAllSubscribers(t *testing.T) {
t.Parallel()
hub := newKeyedHub()
node := defaultNodeNoHandlers()
defer func() { _ = node.Shutdown(context.Background()) }()
client1 := newTestClientV2(t, node, "user1")
client2 := newTestClientV2(t, node, "user2")
hub.addSubscriber("key1", client1)
hub.addSubscriber("key1", client2)
require.Equal(t, 2, hub.subscriberCount("key1"))
hub.removeAllSubscribers("key1")
require.Equal(t, 0, hub.subscriberCount("key1"))
require.Equal(t, 0, hub.numKeys())
}
func TestKeyedHub_Subscribers(t *testing.T) {
t.Parallel()
hub := newKeyedHub()
node := defaultNodeNoHandlers()
defer func() { _ = node.Shutdown(context.Background()) }()
require.Nil(t, hub.subscribers("nonexistent"))
client1 := newTestClientV2(t, node, "user1")
client2 := newTestClientV2(t, node, "user2")
hub.addSubscriber("key1", client1)
hub.addSubscriber("key1", client2)
subs := hub.subscribers("key1")
require.Len(t, subs, 2)
}
func TestKeyedHub_NumKeys(t *testing.T) {
t.Parallel()
hub := newKeyedHub()
require.Equal(t, 0, hub.numKeys())
node := defaultNodeNoHandlers()
defer func() { _ = node.Shutdown(context.Background()) }()
client := newTestClientV2(t, node, "user1")
hub.addSubscriber("key1", client)
hub.addSubscriber("key2", client)
require.Equal(t, 2, hub.numKeys())
hub.removeSubscriber("key1", client)
require.Equal(t, 1, hub.numKeys())
}
func TestKeyedHub_BroadcastRemovalToUsers(t *testing.T) {
t.Parallel()
hub := newKeyedHub()
node := defaultNodeNoHandlers()
defer func() { _ = node.Shutdown(context.Background()) }()
node.OnConnecting(func(ctx context.Context, e ConnectEvent) (ConnectReply, error) {
return ConnectReply{}, nil
})
client1 := newTestClientV2(t, node, "user1")
connectClientV2(t, client1)
client2 := newTestClientV2(t, node, "user2")
connectClientV2(t, client2)
client3 := newTestClientV2(t, node, "user3")
connectClientV2(t, client3)
hub.addSubscriber("key1", client1)
hub.addSubscriber("key1", client2)
hub.addSubscriber("key1", client3)
// Remove subscribers for user1 and user2.
hub.removeSubscribersForUsers("key1", []string{"user1", "user2"}, nil)
require.False(t, hub.hasSubscriber("key1", client1))
require.False(t, hub.hasSubscriber("key1", client2))
require.True(t, hub.hasSubscriber("key1", client3))
}
func TestKeyedHub_RemoveSubscribersForUsers_Exclude(t *testing.T) {
t.Parallel()
hub := newKeyedHub()
node := defaultNodeNoHandlers()
defer func() { _ = node.Shutdown(context.Background()) }()
node.OnConnecting(func(ctx context.Context, e ConnectEvent) (ConnectReply, error) {
return ConnectReply{}, nil
})
client1 := newTestClientV2(t, node, "user1")
connectClientV2(t, client1)
client2 := newTestClientV2(t, node, "user2")
connectClientV2(t, client2)
client3 := newTestClientV2(t, node, "user3")
connectClientV2(t, client3)
hub.addSubscriber("key1", client1)
hub.addSubscriber("key1", client2)
hub.addSubscriber("key1", client3)
// Exclude user1 — remove all others.
hub.removeSubscribersForUsers("key1", nil, []string{"user1"})
require.True(t, hub.hasSubscriber("key1", client1))
require.False(t, hub.hasSubscriber("key1", client2))
require.False(t, hub.hasSubscriber("key1", client3))
}
// TestKeyedHub_RemoveSubscribersForUsers_MissingKey covers the early-return
// branch when the requested key has no subscribers in the hub.
func TestKeyedHub_RemoveSubscribersForUsers_MissingKey(t *testing.T) {
t.Parallel()
hub := newKeyedHub()
// No-op against a hub that has no entry for "missing-key".
require.NotPanics(t, func() {
hub.removeSubscribersForUsers("missing-key", []string{"user1"}, nil)
})
}
// TestKeyedHub_RemoveSubscribersForUsers_DeletesEmptyKey covers the branch
// where every subscriber is removed and the key entry itself is deleted.
func TestKeyedHub_RemoveSubscribersForUsers_DeletesEmptyKey(t *testing.T) {
t.Parallel()
hub := newKeyedHub()
node := defaultNodeNoHandlers()
defer func() { _ = node.Shutdown(context.Background()) }()
node.OnConnecting(func(ctx context.Context, e ConnectEvent) (ConnectReply, error) {
return ConnectReply{}, nil
})
client := newTestClientV2(t, node, "user1")
connectClientV2(t, client)
hub.addSubscriber("k", client)
require.True(t, hub.hasSubscriber("k", client))
hub.removeSubscribersForUsers("k", []string{"user1"}, nil)
// After all subscribers removed, key entry should be gone.
require.False(t, hub.hasSubscriber("k", client))
require.Zero(t, hub.subscriberCount("k"))
}
// TestKeyedHub_BroadcastRemovalToUsers_NoTargets covers the early-return when
// the key has no subscribers at all.
func TestKeyedHub_BroadcastRemovalToUsers_NoTargets(t *testing.T) {
t.Parallel()
hub := newKeyedHub()
require.NotPanics(t, func() {
hub.broadcastRemovalToUsers("ch", "k", []string{"user1"}, nil)
})
}
// TestKeyedHub_AllKeys_DedupsAcrossKeys covers the dedup branch in subscribers/
// allKeys when the same client is registered under multiple keys — each unique
// client-id should appear once in the returned set.
func TestKeyedHub_AllKeys_DedupsAcrossKeys(t *testing.T) {
t.Parallel()
hub := newKeyedHub()
node := defaultNodeNoHandlers()
defer func() { _ = node.Shutdown(context.Background()) }()
node.OnConnecting(func(ctx context.Context, e ConnectEvent) (ConnectReply, error) {
return ConnectReply{}, nil
})
client := newTestClientV2(t, node, "user-multi")
connectClientV2(t, client)
// Same client under two keys.
hub.addSubscriber("k1", client)
hub.addSubscriber("k2", client)
// collectAllClients should return the client once even though it appears
// under two keys (drives the dedup `if _, ok := seen[uid]; ok { continue }`
// path).
subs := hub.collectAllClients()
require.Len(t, subs, 1)
}