diff --git a/ledis/t_hash_test.go b/ledis/t_hash_test.go
new file mode 100644
index 0000000..ed13f2b
--- /dev/null
+++ b/ledis/t_hash_test.go
@@ -0,0 +1,17 @@
+package ledis
+
+import (
+	"testing"
+)
+
+func TestDBHash(t *testing.T) {
+	db := getTestDB()
+
+	key := []byte("testdb_hash_a")
+
+	if n, err := db.HSet(key, []byte("a"), []byte("hello world")); err != nil {
+		t.Fatal(err)
+	} else if n != 1 {
+		t.Fatal(n)
+	}
+}
diff --git a/ledis/t_kv_test.go b/ledis/t_kv_test.go
new file mode 100644
index 0000000..f041b43
--- /dev/null
+++ b/ledis/t_kv_test.go
@@ -0,0 +1,15 @@
+package ledis
+
+import (
+	"testing"
+)
+
+func TestDBKV(t *testing.T) {
+	db := getTestDB()
+
+	key := []byte("testdb_kv_a")
+
+	if err := db.Set(key, []byte("hello world")); err != nil {
+		t.Fatal(err)
+	}
+}
diff --git a/ledis/t_list_test.go b/ledis/t_list_test.go
new file mode 100644
index 0000000..056602e
--- /dev/null
+++ b/ledis/t_list_test.go
@@ -0,0 +1,17 @@
+package ledis
+
+import (
+	"testing"
+)
+
+func TestDBList(t *testing.T) {
+	db := getTestDB()
+
+	key := []byte("testdb_list_a")
+
+	if n, err := db.RPush(key, []byte("1"), []byte("2")); err != nil {
+		t.Fatal(err)
+	} else if n != 2 {
+		t.Fatal(n)
+	}
+}
diff --git a/ledis/t_zset_test.go b/ledis/t_zset_test.go
new file mode 100644
index 0000000..fcbe32a
--- /dev/null
+++ b/ledis/t_zset_test.go
@@ -0,0 +1,17 @@
+package ledis
+
+import (
+	"testing"
+)
+
+func TestDBZSet(t *testing.T) {
+	db := getTestDB()
+
+	key := []byte("testdb_zset_a")
+
+	if n, err := db.ZAdd(key, ScorePair{1, []byte("a")}, ScorePair{1, []byte("a")}); err != nil {
+		t.Fatal(err)
+	} else if n != 2 {
+		t.Fatal(n)
+	}
+}