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middleware_test.go
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middleware_test.go
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package i18nmiddleware
import (
"net/http"
"net/http/httptest"
"testing"
"clevergo.tech/clevergo"
"github.com/alecthomas/assert"
"github.com/nicksnyder/go-i18n/v2/i18n"
"golang.org/x/text/language"
)
func TestWithFormField(t *testing.T) {
m := &middleware{}
field := "_lang"
WithFormField(field)(m)
assert.Equal(t, field, m.formField)
}
func newTestBundle() *i18n.Bundle {
bundle := i18n.NewBundle(language.English)
bundle.ParseMessageFileBytes([]byte(`{"home": "Home"}`), "en.json")
bundle.ParseMessageFileBytes([]byte(`{"home": "主页"}`), "zh-CN.json")
return bundle
}
func testHandle(c *clevergo.Context) error {
localizer := Localizer(c)
s, _, _ := localizer.LocalizeWithTag(&i18n.LocalizeConfig{
MessageID: "home",
})
return c.String(http.StatusOK, s)
}
func TestNew(t *testing.T) {
fn := New(newTestBundle())
handle := fn(testHandle)
runTests(t, handle, []testCase{
{httptest.NewRequest(http.MethodGet, "/", nil), "Home"},
{httptest.NewRequest(http.MethodGet, "/?lang=en", nil), "Home"},
{httptest.NewRequest(http.MethodGet, "/?lang=zh", nil), "主页"},
{httptest.NewRequest(http.MethodGet, "/?_lang=zh", nil), "Home"}, // incorrect form field
})
}
func TestNewWithOption(t *testing.T) {
fn := New(newTestBundle(), WithFormField("_lang"))
handle := fn(testHandle)
runTests(t, handle, []testCase{
{httptest.NewRequest(http.MethodGet, "/", nil), "Home"},
{httptest.NewRequest(http.MethodGet, "/?_lang=en", nil), "Home"},
{httptest.NewRequest(http.MethodGet, "/?_lang=zh", nil), "主页"},
{httptest.NewRequest(http.MethodGet, "/?lang=zh", nil), "Home"}, // incorrect form field
})
}
type testCase struct {
req *http.Request
body string
}
func runTests(t *testing.T, handle clevergo.Handle, testCases []testCase) {
for _, testCase := range testCases {
resp := httptest.NewRecorder()
c := &clevergo.Context{
Request: testCase.req,
Response: resp,
}
handle(c)
assert.Equal(t, testCase.body, resp.Body.String())
}
}
func TestLocalizer(t *testing.T) {
var localizer *i18n.Localizer
c := &clevergo.Context{
Request: httptest.NewRequest(http.MethodGet, "/", nil),
}
c.WithValue(LocalizerKey, localizer)
assert.Equal(t, localizer, Localizer(c))
}