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encoder_test.go
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encoder_test.go
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package restencoder
import (
"fmt"
"net/http"
"net/http/httptest"
"testing"
"github.com/stretchr/testify/require"
)
func TestRespond(t *testing.T) {
body := map[string]string{"msg": "Hello, world!"}
t.Run("no options", func(t *testing.T) {
recorder := httptest.NewRecorder()
Respond(recorder)
require.Equal(t, http.StatusOK, recorder.Code)
})
t.Run("status code", func(t *testing.T) {
recorder := httptest.NewRecorder()
Respond(recorder, StatusCode(http.StatusCreated))
require.Equal(t, http.StatusCreated, recorder.Code)
})
t.Run("header", func(t *testing.T) {
recorder := httptest.NewRecorder()
Respond(recorder, Header("X-Header", "value"))
require.Equal(t, "value", recorder.Header().Get("X-Header"))
})
t.Run("json body", func(t *testing.T) {
recorder := httptest.NewRecorder()
Respond(recorder, JSONBody(body))
require.JSONEq(t, `{"msg": "Hello, world!"}`, recorder.Body.String())
})
t.Run("all options", func(t *testing.T) {
recorder := httptest.NewRecorder()
Respond(
recorder,
StatusCode(http.StatusCreated),
Header("X-Header", "value"),
JSONBody(body),
)
require.Equal(t, http.StatusCreated, recorder.Code)
require.Equal(t, "application/json; charset=utf-8", recorder.Header().Get("Content-Type"))
require.Equal(t, "value", recorder.Header().Get("X-Header"))
require.JSONEq(t, `{"msg": "Hello, world!"}`, recorder.Body.String())
})
t.Run("error response", func(t *testing.T) {
recorder := httptest.NewRecorder()
Respond(recorder, Error(fmt.Errorf("something wrong")))
require.Equal(t, http.StatusInternalServerError, recorder.Code)
require.JSONEq(t, `{"error": "something wrong"}`, recorder.Body.String())
})
t.Run("error code", func(t *testing.T) {
recorder := httptest.NewRecorder()
Respond(recorder, ErrorCode("invalid_field"))
require.Equal(t, http.StatusInternalServerError, recorder.Code)
require.JSONEq(t, `{"code": "invalid_field"}`, recorder.Body.String())
})
t.Run("error message", func(t *testing.T) {
recorder := httptest.NewRecorder()
Respond(recorder, ErrorMessage("something wrong"))
require.Equal(t, http.StatusInternalServerError, recorder.Code)
require.JSONEq(t, `{"error": "something wrong"}`, recorder.Body.String())
})
t.Run("complete error response", func(t *testing.T) {
recorder := httptest.NewRecorder()
Respond(recorder,
StatusCode(http.StatusBadRequest),
ErrorCode("invalid_field"),
ErrorMessage("something wrong"),
)
require.Equal(t, http.StatusBadRequest, recorder.Code)
require.JSONEq(t, `{"code": "invalid_field","error": "something wrong"}`, recorder.Body.String())
})
t.Run("should fail with invalid body", func(t *testing.T) {
recorder := httptest.NewRecorder()
Respond(recorder, StatusCode(http.StatusInternalServerError), JSONBody(make(chan int))) // Providing an invalid body value
require.Equal(t, http.StatusInternalServerError, recorder.Code)
require.Equal(t, "application/json; charset=utf-8", recorder.Header().Get("Content-Type"))
require.Empty(t, recorder.Body.String()) // No response body should be written due to encoding error
})
}