func TestDecodeJSON(t *testing.T) {
testcases := []usererrors.UserError{
0: usererrors.InvalidParams{{
Params: []string{"foo"},
Message: "hi there!",
}},
1: usererrors.InternalFailure{"myid"},
2: usererrors.ActionNotAllowed{"doit"},
3: usererrors.NotFound{},
4: usererrors.BearerAuthRequired{},
5: usererrors.AuthInvalid{},
}
for i, testcase := range testcases {
encoded, err := usererrors.MarshalJSON(testcase)
t.Log(string(encoded))
res, err := usererrors.UnmarshalJSON(encoded)
if err != nil {
t.Errorf("%d: %s", i, err)
} else if !reflect.DeepEqual(res, testcase) {
t.Errorf("%d: err=%#v, expected %#v", i, res, testcase)
}
}
unknownJSON := []byte(`{"code":"foo","error":"bar"}`)
if res, err := usererrors.UnmarshalJSON(unknownJSON); err != nil {
t.Error(err)
} else if res.Code() != "foo" {
t.Errorf("code=%q, expected %q", res.Code(), "foo")
} else if have := res.Error(); have != "bar" {
t.Errorf("error=%q, want %q", have, "bar")
}
}
// UserError returns a JSON response for the provided UserError and
// HTTP status code.
func UserError(ctx context.Context, w http.ResponseWriter, status int, uerr usererrors.UserError) {
content, err := usererrors.MarshalJSON(uerr)
if err != nil {
panic(err)
}
reqlog.SetContext(ctx, "error_code", uerr.Code())
msg := json.RawMessage(content)
Data(ctx, w, status, &msg)
}