fix(cache): resolve test failures in Gitea Actions by closing Redis clients and using IPv4 address

internal/cache/store_test.go

@@ -12,9 +12,11 @@ import (
 // TestCacheGetSet tests basic Get and Set operations.
 func TestCacheGetSet(t *testing.T) {
 	ctx := context.Background()
-	client := NewRedisClient(redis.NewClient(&redis.Options{
-		Addr: "localhost:6379",
-	}), metrics.New())
+	rdb := redis.NewClient(&redis.Options{
+		Addr: "127.0.0.1:6379",
+	})
+	client := NewRedisClient(rdb, metrics.New())
+	defer rdb.Close()
 
 	// Test Set
 	key := &CacheKey{Kind: "city", Code: "c146"}
@@ -88,9 +90,11 @@ func TestCacheKeyString(t *testing.T) {
 // TestCacheAsideGetOrSet tests the cache-aside GetOrSetFuncPattern.
 func TestCacheAsideGetOrSet(t *testing.T) {
 	ctx := context.Background()
-	client := NewRedisClient(redis.NewClient(&redis.Options{
-		Addr: "localhost:6379",
-	}), metrics.New())
+	rdb := redis.NewClient(&redis.Options{
+		Addr: "127.0.0.1:6379",
+	})
+	client := NewRedisClient(rdb, metrics.New())
+	defer rdb.Close()
 
 	fetchCallCount := 0
 	fetchFunc := func() ([]byte, error) {
@@ -128,9 +132,11 @@ func TestCacheAsideGetOrSet(t *testing.T) {
 // TestCacheAsideGetCity tests GetCity with cache.
 func TestCacheAsideGetCity(t *testing.T) {
 	ctx := context.Background()
-	client := NewRedisClient(redis.NewClient(&redis.Options{
-		Addr: "localhost:6379",
-	}), metrics.New())
+	rdb := redis.NewClient(&redis.Options{
+		Addr: "127.0.0.1:6379",
+	})
+	client := NewRedisClient(rdb, metrics.New())
+	defer rdb.Close()
 
 	fetchCallCount := 0
 	fetchFunc := func() ([]byte, error) {
@@ -167,9 +173,11 @@ func TestCacheAsideGetCity(t *testing.T) {
 // TestCacheAsideGetSearch tests GetSearch with near-term and far-term TTL.
 func TestCacheAsideGetSearch(t *testing.T) {
 	ctx := context.Background()
-	client := NewRedisClient(redis.NewClient(&redis.Options{
-		Addr: "localhost:6379",
-	}), metrics.New())
+	rdb := redis.NewClient(&redis.Options{
+		Addr: "127.0.0.1:6379",
+	})
+	client := NewRedisClient(rdb, metrics.New())
+	defer rdb.Close()
 
 	fetchNearTerm := func() ([]byte, error) {
 		return []byte(`{"near_term":true}`), nil
@@ -205,9 +213,11 @@ func TestCacheAsideGetSearch(t *testing.T) {
 // TestCacheInvalidate tests invalidation operations.
 func TestCacheInvalidate(t *testing.T) {
 	ctx := context.Background()
-	client := NewRedisClient(redis.NewClient(&redis.Options{
-		Addr: "localhost:6379",
-	}), metrics.New())
+	rdb := redis.NewClient(&redis.Options{
+		Addr: "127.0.0.1:6379",
+	})
+	client := NewRedisClient(rdb, metrics.New())
+	defer rdb.Close()
 
 	// Set up some keys
 	cityKey := &CacheKey{Kind: "city", Code: "c146"}