feat: add custom error type #1
8
go.mod
8
go.mod
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@ -1,3 +1,11 @@
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module gitea.dwysokinski.me/Kichiyaki/notificationarr
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go 1.18
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require github.com/stretchr/testify v1.8.0
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require (
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github.com/davecgh/go-spew v1.1.1 // indirect
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github.com/pmezard/go-difflib v1.0.0 // indirect
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gopkg.in/yaml.v3 v3.0.1 // indirect
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)
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@ -0,0 +1,15 @@
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github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
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github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
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github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
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github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
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github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
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github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
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github.com/stretchr/objx v0.4.0/go.mod h1:YvHI0jy2hoMjB+UWwv71VJQ9isScKT/TqJzVSSt89Yw=
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github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
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github.com/stretchr/testify v1.8.0 h1:pSgiaMZlXftHpm5L7V1+rVB+AZJydKsMxsQBIJw4PKk=
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github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO+kdMU+MU=
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gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
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gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
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gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
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gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
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gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
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@ -0,0 +1,82 @@
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package domain
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import "fmt"
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type ErrorCode uint8
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const (
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ErrorCodeUnknown ErrorCode = iota
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)
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func (e ErrorCode) String() string {
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switch e {
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case ErrorCodeUnknown:
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fallthrough
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default:
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return "internal-server-error"
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}
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}
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type Error struct {
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code ErrorCode
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msg string
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err error
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}
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type ErrorOption func(err Error) Error
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func WithCode(code ErrorCode) ErrorOption {
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return func(err Error) Error {
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err.code = code
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return err
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}
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}
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func WithErr(wrap error) ErrorOption {
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return func(err Error) Error {
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err.err = wrap
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return err
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}
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}
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func WithMessage(msg string) ErrorOption {
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return func(err Error) Error {
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err.msg = msg
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return err
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}
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}
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func WithMessagef(format string, a ...any) ErrorOption {
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return func(err Error) Error {
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err.msg = fmt.Sprintf(format, a...)
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return err
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}
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}
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func NewError(opts ...ErrorOption) Error {
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var err Error
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for _, opt := range opts {
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err = opt(err)
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}
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return err
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}
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func (err Error) Error() string {
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if err.err != nil {
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return err.msg + ": " + err.err.Error()
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}
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return err.msg
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}
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func (err Error) Message() string {
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return err.msg
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}
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func (err Error) Code() ErrorCode {
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return err.code
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}
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func (err Error) Unwrap() error {
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return err.err
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}
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@ -0,0 +1,67 @@
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package domain_test
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import (
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"errors"
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"testing"
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"github.com/stretchr/testify/assert"
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"gitea.dwysokinski.me/Kichiyaki/notificationarr/internal/domain"
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)
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func TestErrorCode_String(t *testing.T) {
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t.Parallel()
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assert.Equal(t, domain.ErrorCodeUnknown.String(), "internal-server-error")
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}
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func TestError(t *testing.T) {
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errToWrap := errors.New("WithErr")
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tests := []struct {
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name string
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options []domain.ErrorOption
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expectedCode domain.ErrorCode
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expectedErr error
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expectedMsg string
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}{
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{
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name: "OK: WithCode, WithMessage",
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options: []domain.ErrorOption{
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domain.WithCode(domain.ErrorCodeUnknown),
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domain.WithMessage("err err"),
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},
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expectedCode: domain.ErrorCodeUnknown,
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expectedErr: nil,
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expectedMsg: "err err",
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},
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{
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name: "OK: WithCode, WithMessagef, WithErr",
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options: []domain.ErrorOption{
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domain.WithCode(domain.ErrorCodeUnknown),
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domain.WithMessagef("xxx %d", 25),
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domain.WithErr(errToWrap),
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},
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expectedCode: domain.ErrorCodeUnknown,
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expectedErr: errToWrap,
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expectedMsg: "xxx 25",
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},
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}
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for _, tt := range tests {
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tt := tt
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t.Run(tt.name, func(t *testing.T) {
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t.Parallel()
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err := domain.NewError(tt.options...)
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assert.Equal(t, tt.expectedCode, err.Code())
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assert.Equal(t, tt.expectedMsg, err.Message())
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assert.ErrorIs(t, tt.expectedErr, err.Unwrap())
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if tt.expectedErr != nil {
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assert.Equal(t, tt.expectedMsg+": "+tt.expectedErr.Error(), err.Error())
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} else {
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assert.Equal(t, tt.expectedMsg, err.Error())
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}
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})
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}
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}
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@ -1,4 +0,0 @@
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package service
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type Notification struct {
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}
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Reference in New Issue