package errs import ( "fmt" "reflect" "testing" ) func TestError_MarshalJSON(t *testing.T) { type fields struct { Status int Err error } tests := []struct { name string fields fields want []byte wantErr bool }{ {"ok", fields{400, fmt.Errorf("bad request")}, []byte(`{"status":400,"message":"Bad Request"}`), false}, {"ok no error", fields{500, nil}, []byte(`{"status":500,"message":"Internal Server Error"}`), false}, } for _, tt := range tests { t.Run(tt.name, func(t *testing.T) { e := &Error{ Status: tt.fields.Status, Err: tt.fields.Err, } got, err := e.MarshalJSON() if (err != nil) != tt.wantErr { t.Errorf("Error.MarshalJSON() error = %v, wantErr %v", err, tt.wantErr) return } if !reflect.DeepEqual(got, tt.want) { t.Errorf("Error.MarshalJSON() = %s, want %s", got, tt.want) } }) } } func TestError_UnmarshalJSON(t *testing.T) { type args struct { data []byte } tests := []struct { name string args args expected *Error wantErr bool }{ {"ok", args{[]byte(`{"status":400,"message":"bad request"}`)}, &Error{Status: 400, Err: fmt.Errorf("bad request")}, false}, {"fail", args{[]byte(`{"status":"400","message":"bad request"}`)}, &Error{}, true}, } for _, tt := range tests { t.Run(tt.name, func(t *testing.T) { e := new(Error) if err := e.UnmarshalJSON(tt.args.data); (err != nil) != tt.wantErr { t.Errorf("Error.UnmarshalJSON() error = %v, wantErr %v", err, tt.wantErr) } if !reflect.DeepEqual(tt.expected, e) { t.Errorf("Error.UnmarshalJSON() wants = %v, got %v", tt.expected, e) } }) } }