[GH-336] - Fix Unmarshal JSON error as string

authentication/authentication_error.go

@@ -54,11 +54,11 @@ func (a *Error) UnmarshalJSON(b []byte) error {
 	type authError Error
 	type authErrorWrapper struct {
 		*authError
-		Code        string `json:"code"`
-		Description string `json:"description"`
+		Code        string          `json:"code"`
+		Description json.RawMessage `json:"description"` // Can be string or object
 	}
 
-	alias := &authErrorWrapper{(*authError)(a), "", ""}
+	alias := &authErrorWrapper{(*authError)(a), "", nil}
 
 	err := json.Unmarshal(b, alias)
 	if err != nil {
@@ -69,8 +69,14 @@ func (a *Error) UnmarshalJSON(b []byte) error {
 		a.Err = alias.Code
 	}
 
-	if alias.Description != "" {
-		a.Message = alias.Description
+	if len(alias.Description) > 0 {
+		var descText string
+		err := json.Unmarshal(alias.Description, &descText)
+		if err == nil {
+			a.Message = descText
+		} else {
+			a.Message = string(alias.Description)
+		}
 	}
 
 	return nil

authentication/authentication_error_test.go

@@ -63,6 +63,18 @@ func Test_newError(t *testing.T) {
 				Message:    "Invalid sign up",
 			},
 		},
+		{
+			name: "it will handle invalid password response",
+			givenResponse: http.Response{
+				StatusCode: http.StatusBadRequest,
+				Body:       io.NopCloser((strings.NewReader(`{"name":"PasswordStrengthError","message":"Password is too weak","code":"invalid_password","description":{"rules":[{"message":"At least %d characters in length","format":[8],"code":"lengthAtLeast","verified":true},{"message":"Contain at least %d of the following %d types of characters:","code":"containsAtLeast","format":[3,4],"items":[{"message":"lower case letters (a-z)","code":"lowerCase","verified":true},{"message":"upper case letters (A-Z)","code":"upperCase","verified":false},{"message":"numbers (i.e. 0-9)","code":"numbers","verified":false},{"message":"special characters (e.g. !@#$%^&*)","code":"specialCharacters","verified":true}],"verified":false}],"verified":false},"policy":"* At least 8 characters in length\n* Contain at least 3 of the following 4 types of characters:\n * lower case letters (a-z)\n * upper case letters (A-Z)\n * numbers (i.e. 0-9)\n * special characters (e.g. !@#$%^&*)","statusCode":400}`))),
+			},
+			expectedError: Error{
+				StatusCode: 400,
+				Err:        "invalid_password",
+				Message:    `{"rules":[{"message":"At least %d characters in length","format":[8],"code":"lengthAtLeast","verified":true},{"message":"Contain at least %d of the following %d types of characters:","code":"containsAtLeast","format":[3,4],"items":[{"message":"lower case letters (a-z)","code":"lowerCase","verified":true},{"message":"upper case letters (A-Z)","code":"upperCase","verified":false},{"message":"numbers (i.e. 0-9)","code":"numbers","verified":false},{"message":"special characters (e.g. !@#$%^&*)","code":"specialCharacters","verified":true}],"verified":false}],"verified":false}`,
+			},
+		},
 	}
 
 	for _, testCase := range testCases {