feat: Added DSN

dsn.go

@@ -0,0 +1,31 @@
+package gorm
+
+import (
+	"net/url"
+	"strconv"
+)
+
+type DSN struct {
+	Host    string
+	Port    int
+	User    string
+	Pass    string
+	Db      string
+	Options map[string]string
+}
+
+func (d DSN) String() string {
+	dsn := d.User + ":" + d.Pass + "@tcp(" + d.Host + ":" + strconv.Itoa(d.Port) + ")/" + d.Db
+
+	if d.Options != nil {
+		value := url.Values{}
+
+		for k, v := range d.Options {
+			value.Add(k, v)
+		}
+
+		dsn += "?" + value.Encode()
+	}
+
+	return dsn
+}

dsn_test.go

@@ -0,0 +1,30 @@
+package gorm
+
+import "testing"
+
+func TestDsn(t *testing.T) {
+	dsn := DSN{
+		Host: "127.0.0.1",
+		Port: 3306,
+		User: "root",
+		Pass: "password",
+		Db:   "gorm",
+	}
+
+	t.Run("dsn string", func(t *testing.T) {
+		if dsn.String() != "root:password@tcp(127.0.0.1:3306)/gorm" {
+			t.Error("dsn string error")
+		}
+	})
+
+	t.Run("dsn string with options", func(t *testing.T) {
+		dsn.Options = map[string]string{
+			"charset":   "utf8mb4",
+			"parseTime": "True",
+		}
+
+		if dsn.String() != "root:password@tcp(127.0.0.1:3306)/gorm?charset=utf8mb4&parseTime=True" {
+			t.Error("dsn string with options error")
+		}
+	})
+}