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|
package consumer
import (
"strings"
"testing"
"time"
)
func TestGroupCoordinator_CreateGroup(t *testing.T) {
gc := NewGroupCoordinator()
defer gc.Close()
groupID := "test-group"
group := gc.GetOrCreateGroup(groupID)
if group == nil {
t.Fatal("Expected group to be created")
}
if group.ID != groupID {
t.Errorf("Expected group ID %s, got %s", groupID, group.ID)
}
if group.State != GroupStateEmpty {
t.Errorf("Expected initial state to be Empty, got %s", group.State)
}
if group.Generation != 0 {
t.Errorf("Expected initial generation to be 0, got %d", group.Generation)
}
// Getting the same group should return the existing one
group2 := gc.GetOrCreateGroup(groupID)
if group2 != group {
t.Error("Expected to get the same group instance")
}
}
func TestGroupCoordinator_ValidateSessionTimeout(t *testing.T) {
gc := NewGroupCoordinator()
defer gc.Close()
// Test valid timeouts
validTimeouts := []int32{6000, 30000, 300000}
for _, timeout := range validTimeouts {
if !gc.ValidateSessionTimeout(timeout) {
t.Errorf("Expected timeout %d to be valid", timeout)
}
}
// Test invalid timeouts
invalidTimeouts := []int32{1000, 5000, 400000}
for _, timeout := range invalidTimeouts {
if gc.ValidateSessionTimeout(timeout) {
t.Errorf("Expected timeout %d to be invalid", timeout)
}
}
}
func TestGroupCoordinator_MemberManagement(t *testing.T) {
gc := NewGroupCoordinator()
defer gc.Close()
group := gc.GetOrCreateGroup("test-group")
// Add members
member1 := &GroupMember{
ID: "member1",
ClientID: "client1",
SessionTimeout: 30000,
Subscription: []string{"topic1", "topic2"},
State: MemberStateStable,
LastHeartbeat: time.Now(),
}
member2 := &GroupMember{
ID: "member2",
ClientID: "client2",
SessionTimeout: 30000,
Subscription: []string{"topic1"},
State: MemberStateStable,
LastHeartbeat: time.Now(),
}
group.Mu.Lock()
group.Members[member1.ID] = member1
group.Members[member2.ID] = member2
group.Mu.Unlock()
// Update subscriptions
group.UpdateMemberSubscription("member1", []string{"topic1", "topic3"})
group.Mu.RLock()
updatedMember := group.Members["member1"]
expectedTopics := []string{"topic1", "topic3"}
if len(updatedMember.Subscription) != len(expectedTopics) {
t.Errorf("Expected %d subscribed topics, got %d", len(expectedTopics), len(updatedMember.Subscription))
}
// Check group subscribed topics
if len(group.SubscribedTopics) != 2 { // topic1, topic3
t.Errorf("Expected 2 group subscribed topics, got %d", len(group.SubscribedTopics))
}
group.Mu.RUnlock()
}
func TestGroupCoordinator_Stats(t *testing.T) {
gc := NewGroupCoordinator()
defer gc.Close()
// Create multiple groups in different states
group1 := gc.GetOrCreateGroup("group1")
group1.Mu.Lock()
group1.State = GroupStateStable
group1.Members["member1"] = &GroupMember{ID: "member1"}
group1.Members["member2"] = &GroupMember{ID: "member2"}
group1.Mu.Unlock()
group2 := gc.GetOrCreateGroup("group2")
group2.Mu.Lock()
group2.State = GroupStatePreparingRebalance
group2.Members["member3"] = &GroupMember{ID: "member3"}
group2.Mu.Unlock()
stats := gc.GetGroupStats()
totalGroups := stats["total_groups"].(int)
if totalGroups != 2 {
t.Errorf("Expected 2 total groups, got %d", totalGroups)
}
totalMembers := stats["total_members"].(int)
if totalMembers != 3 {
t.Errorf("Expected 3 total members, got %d", totalMembers)
}
stateCount := stats["group_states"].(map[string]int)
if stateCount["Stable"] != 1 {
t.Errorf("Expected 1 stable group, got %d", stateCount["Stable"])
}
if stateCount["PreparingRebalance"] != 1 {
t.Errorf("Expected 1 preparing rebalance group, got %d", stateCount["PreparingRebalance"])
}
}
func TestGroupCoordinator_Cleanup(t *testing.T) {
gc := NewGroupCoordinator()
defer gc.Close()
// Create a group with an expired member
group := gc.GetOrCreateGroup("test-group")
expiredMember := &GroupMember{
ID: "expired-member",
SessionTimeout: 1000, // 1 second
LastHeartbeat: time.Now().Add(-2 * time.Second), // 2 seconds ago
State: MemberStateStable,
}
activeMember := &GroupMember{
ID: "active-member",
SessionTimeout: 30000, // 30 seconds
LastHeartbeat: time.Now(), // just now
State: MemberStateStable,
}
group.Mu.Lock()
group.Members[expiredMember.ID] = expiredMember
group.Members[activeMember.ID] = activeMember
group.Leader = expiredMember.ID // Make expired member the leader
group.Mu.Unlock()
// Perform cleanup
gc.performCleanup()
group.Mu.RLock()
defer group.Mu.RUnlock()
// Expired member should be removed
if _, exists := group.Members[expiredMember.ID]; exists {
t.Error("Expected expired member to be removed")
}
// Active member should remain
if _, exists := group.Members[activeMember.ID]; !exists {
t.Error("Expected active member to remain")
}
// Leader should be reset since expired member was leader
if group.Leader == expiredMember.ID {
t.Error("Expected leader to be reset after expired member removal")
}
}
func TestGroupCoordinator_GenerateMemberID(t *testing.T) {
gc := NewGroupCoordinator()
defer gc.Close()
// Test that same client/host combination generates consistent member ID
id1 := gc.GenerateMemberID("client1", "host1")
id2 := gc.GenerateMemberID("client1", "host1")
// Same client/host should generate same ID (deterministic)
if id1 != id2 {
t.Errorf("Expected same member ID for same client/host: %s vs %s", id1, id2)
}
// Different clients should generate different IDs
id3 := gc.GenerateMemberID("client2", "host1")
id4 := gc.GenerateMemberID("client1", "host2")
if id1 == id3 {
t.Errorf("Expected different member IDs for different clients: %s vs %s", id1, id3)
}
if id1 == id4 {
t.Errorf("Expected different member IDs for different hosts: %s vs %s", id1, id4)
}
// IDs should be properly formatted
if len(id1) < 10 { // Should be longer than just "consumer-"
t.Errorf("Expected member ID to be properly formatted, got: %s", id1)
}
// Should start with "consumer-" prefix
if !strings.HasPrefix(id1, "consumer-") {
t.Errorf("Expected member ID to start with 'consumer-', got: %s", id1)
}
}
|
