gin/binding/json_external_test.go

40 lines
869 B
Go

package binding_test
import (
"bytes"
"io"
"net/http"
"net/http/httptest"
"testing"
"github.com/gin-gonic/gin"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
func TestJSONBindingEmptyBodyReturnsHelpfulError(t *testing.T) {
type Req struct {
Name string `json:"name" binding:"required"`
}
w := httptest.NewRecorder()
c, _ := gin.CreateTestContext(w)
req, err := http.NewRequest(http.MethodPost, "/", bytes.NewBuffer(nil))
require.NoError(t, err)
req.Header.Set("Content-Type", "application/json")
c.Request = req
var r Req
err = c.ShouldBindJSON(&r)
require.Error(t, err)
// Error message should be more descriptive than plain EOF,
// while still preserving io.EOF via wrapping.
assert.NotEqual(t, "EOF", err.Error())
assert.Contains(t, err.Error(), "empty request body")
assert.ErrorIs(t, err, io.EOF)
}