Fix: UserAuth Error

* Replaced normal error with `Error` and SQLite return code.
* Fix tests

sqlite3_opt_userauth.go

@@ -61,7 +61,6 @@ _sqlite3_auth_enabled(sqlite3* db)
 */
 import "C"
 import (
-	"errors"
 	"unsafe"
 )
 
@@ -69,11 +68,6 @@ const (
 	SQLITE_AUTH = C.SQLITE_AUTH
 )
 
-var (
-	ErrUnauthorized  = errors.New("SQLITE_AUTH: Unauthorized")
-	ErrAdminRequired = errors.New("SQLITE_AUTH: Unauthorized; Admin Privileges Required")
-)
-
 // Authenticate will perform an authentication of the provided username
 // and password against the database.
 //
@@ -91,7 +85,7 @@ func (c *SQLiteConn) Authenticate(username, password string) error {
 	rv := c.authenticate(username, password)
 	switch rv {
 	case C.SQLITE_ERROR, C.SQLITE_AUTH:
-		return ErrUnauthorized
+		return Error{Code: ErrNo(rv)}
 	case C.SQLITE_OK:
 		return nil
 	default:
@@ -138,7 +132,7 @@ func (c *SQLiteConn) AuthUserAdd(username, password string, admin bool) error {
 	rv := c.authUserAdd(username, password, isAdmin)
 	switch rv {
 	case C.SQLITE_ERROR, C.SQLITE_AUTH:
-		return ErrAdminRequired
+		return Error{Code: ErrNo(rv)}
 	case C.SQLITE_OK:
 		return nil
 	default:
@@ -187,7 +181,7 @@ func (c *SQLiteConn) AuthUserChange(username, password string, admin bool) error
 	rv := c.authUserChange(username, password, isAdmin)
 	switch rv {
 	case C.SQLITE_ERROR, C.SQLITE_AUTH:
-		return ErrAdminRequired
+		return Error{Code: ErrNo(rv)}
 	case C.SQLITE_OK:
 		return nil
 	default:
@@ -234,7 +228,7 @@ func (c *SQLiteConn) AuthUserDelete(username string) error {
 	rv := c.authUserDelete(username)
 	switch rv {
 	case C.SQLITE_ERROR, C.SQLITE_AUTH:
-		return ErrAdminRequired
+		return Error{Code: ErrNo(rv)}
 	case C.SQLITE_OK:
 		return nil
 	default:

sqlite3_opt_userauth_test.go

@@ -191,14 +191,14 @@ func TestUserAuthLogin(t *testing.T) {
 	if err == nil {
 		t.Fatal("Login successful while expecting to fail")
 	}
-	if err != ErrUnauthorized {
+	if err.(Error).Code != SQLITE_AUTH {
 		t.Fatal(err)
 	}
 	err = c2.Authenticate("admin", "invalid")
 	if err == nil {
 		t.Fatal("Login successful while expecting to fail")
 	}
-	if err != ErrUnauthorized {
+	if err.(Error).Code != SQLITE_AUTH {
 		t.Fatal(err)
 	}
 }
@@ -339,7 +339,7 @@ func TestUserAuthAddUser(t *testing.T) {
 	}
 
 	err = c2.AuthUserAdd("admin3", "admin3", true)
-	if err != ErrAdminRequired {
+	if err.(Error).Code != SQLITE_AUTH {
 		t.Fatal("Created admin user while not allowed")
 	}
 
@@ -353,7 +353,7 @@ func TestUserAuthAddUser(t *testing.T) {
 	}
 
 	err = c2.AuthUserAdd("user4", "user4", false)
-	if err != ErrAdminRequired {
+	if err.(Error).Code != SQLITE_AUTH {
 		t.Fatal("Created user while not allowed")
 	}
 }
@@ -397,7 +397,7 @@ func TestUserAuthModifyUser(t *testing.T) {
 	// Because we are current logged in as 'admin'
 	// Changing our own admin flag should fail.
 	err = c1.AuthUserChange("admin", "admin3", false)
-	if err != ErrAdminRequired {
+	if err.(Error).Code != SQLITE_AUTH {
 		t.Fatal("Successfully changed admin flag while not allowed")
 	}
 
@@ -452,7 +452,7 @@ func TestUserAuthModifyUser(t *testing.T) {
 
 	// Modify other user password and flag through *SQLiteConn
 	err = c2.AuthUserChange("user2", "invalid", false)
-	if err != ErrAdminRequired {
+	if err.(Error).Code != SQLITE_AUTH {
 		t.Fatal("Password change succesful while not allowed")
 	}
 }
@@ -583,7 +583,7 @@ func TestUserAuthDeleteUser(t *testing.T) {
 	// Delete user while logged in as normal user
 	// through *SQLiteConn
 	err = c2.AuthUserDelete("user2")
-	if err != ErrAdminRequired {
+	if err.(Error).Code != SQLITE_AUTH {
 		t.Fatal("Successfully deleted user wthout proper privileges")
 	}
 }