kurz/domain/errors_test.go

package domain

import (
	"fmt"
	"testing"

	"github.com/nicksnyder/go-i18n/v2/i18n"
	"golang.org/x/text/language"
)

/*
TestMakeErrorHappy tests localization of a known error.
*/
func TestMakeErrorHappy(t *testing.T) {
	// Do not use a i18n.Message literal to initialize, to prevent goi18n extraction.
	var frNoError i18n.Message
	frNoError.ID = NoError.ID
	frNoError.Other = "Pas d'erreur"

	bundle := &i18n.Bundle{DefaultLanguage: language.English}
	bundle.AddMessages(language.English, &NoError)
	bundle.AddMessages(language.French, &frNoError)

	type testPass struct {
		tag      string
		error    i18n.Message
		details  string
		expected string
	}
	passes := []testPass{
		{language.English.String(), NoError, "", NoError.Other},
		{language.English.String(), NoError, "details", NoError.Other + ": details"},
		{language.French.String(), frNoError, "", frNoError.Other},
		{language.French.String(), frNoError, "details", frNoError.Other + ": details"},
	}
	for _, pass := range passes {
		var subTestName string
		if pass.details == "" {
			subTestName = fmt.Sprintf("%s/<no details>", pass.tag)
		} else {
			subTestName = fmt.Sprintf("%s/%s", pass.tag, pass.details)
		}
		t.Run(subTestName, func(t *testing.T) {
			localizer := i18n.NewLocalizer(bundle, pass.tag)
			err := MakeError(localizer, pass.error.ID, pass.details)
			expected := pass.expected
			if err.Error() != expected {
				t.Errorf("Localized \"%s\" version (%v) does not match expected value (%v)\n",
					pass.tag, err.Error(), expected)
			}
		})
	}
}