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1875 lines (1703 loc) · 59.9 KB
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// SPDX-License-Identifier: MIT
// SPDX-FileCopyrightText: © 2015 LabStack LLC and Echo contributors
package echo
import (
"bytes"
"encoding/json"
"encoding/xml"
"errors"
"fmt"
"io"
"mime/multipart"
"net/http"
"net/http/httptest"
"net/http/httputil"
"net/url"
"reflect"
"strconv"
"strings"
"testing"
"time"
"github.com/stretchr/testify/assert"
)
type bindTestStruct struct {
T Timestamp
GoT time.Time
PtrI16 *int16
PtrUI *uint
Tptr *Timestamp
PtrF32 *float32
PtrB *bool
PtrI32 *int32
GoTptr *time.Time
PtrI64 *int64
PtrI *int
PtrI8 *int8
PtrF64 *float64
PtrUI8 *uint8
PtrUI64 *uint64
PtrUI16 *uint16
PtrS *string
PtrUI32 *uint32
S string
cantSet string
DoesntExist string
SA StringArray
F64 float64
I int
UI64 uint64
UI uint
I64 int64
F32 float32
UI32 uint32
I32 int32
UI16 uint16
I16 int16
B bool
UI8 uint8
I8 int8
}
type bindTestStructWithTags struct {
T Timestamp `json:"T" form:"T"`
GoT time.Time `json:"GoT" form:"GoT"`
PtrI16 *int16 `json:"PtrI16" form:"PtrI16"`
PtrUI *uint `json:"PtrUI" form:"PtrUI"`
Tptr *Timestamp `json:"Tptr" form:"Tptr"`
PtrF32 *float32 `json:"PtrF32" form:"PtrF32"`
PtrB *bool `json:"PtrB" form:"PtrB"`
PtrI32 *int32 `json:"PtrI32" form:"PtrI32"`
GoTptr *time.Time `json:"GoTptr" form:"GoTptr"`
PtrI64 *int64 `json:"PtrI64" form:"PtrI64"`
PtrI *int `json:"PtrI" form:"PtrI"`
PtrI8 *int8 `json:"PtrI8" form:"PtrI8"`
PtrF64 *float64 `json:"PtrF64" form:"PtrF64"`
PtrUI8 *uint8 `json:"PtrUI8" form:"PtrUI8"`
PtrUI64 *uint64 `json:"PtrUI64" form:"PtrUI64"`
PtrUI16 *uint16 `json:"PtrUI16" form:"PtrUI16"`
PtrS *string `json:"PtrS" form:"PtrS"`
PtrUI32 *uint32 `json:"PtrUI32" form:"PtrUI32"`
S string `json:"S" form:"S"`
cantSet string
DoesntExist string `json:"DoesntExist" form:"DoesntExist"`
SA StringArray `json:"SA" form:"SA"`
F64 float64 `json:"F64" form:"F64"`
I int `json:"I" form:"I"`
UI64 uint64 `json:"UI64" form:"UI64"`
UI uint `json:"UI" form:"UI"`
I64 int64 `json:"I64" form:"I64"`
F32 float32 `json:"F32" form:"F32"`
UI32 uint32 `json:"UI32" form:"UI32"`
I32 int32 `json:"I32" form:"I32"`
UI16 uint16 `json:"UI16" form:"UI16"`
I16 int16 `json:"I16" form:"I16"`
B bool `json:"B" form:"B"`
UI8 uint8 `json:"UI8" form:"UI8"`
I8 int8 `json:"I8" form:"I8"`
}
type Timestamp time.Time
type TA []Timestamp
type StringArray []string
type Struct struct {
Foo string
}
type Bar struct {
Baz int `json:"baz" query:"baz"`
}
func (t *Timestamp) UnmarshalParam(src string) error {
ts, err := time.Parse(time.RFC3339, src)
*t = Timestamp(ts)
return err
}
func (a *StringArray) UnmarshalParam(src string) error {
*a = StringArray(strings.Split(src, ","))
return nil
}
func (s *Struct) UnmarshalParam(src string) error {
*s = Struct{
Foo: src,
}
return nil
}
func (t bindTestStruct) GetCantSet() string {
return t.cantSet
}
var values = map[string][]string{
"I": {"0"},
"PtrI": {"0"},
"I8": {"8"},
"PtrI8": {"8"},
"I16": {"16"},
"PtrI16": {"16"},
"I32": {"32"},
"PtrI32": {"32"},
"I64": {"64"},
"PtrI64": {"64"},
"UI": {"0"},
"PtrUI": {"0"},
"UI8": {"8"},
"PtrUI8": {"8"},
"UI16": {"16"},
"PtrUI16": {"16"},
"UI32": {"32"},
"PtrUI32": {"32"},
"UI64": {"64"},
"PtrUI64": {"64"},
"B": {"true"},
"PtrB": {"true"},
"F32": {"32.5"},
"PtrF32": {"32.5"},
"F64": {"64.5"},
"PtrF64": {"64.5"},
"S": {"test"},
"PtrS": {"test"},
"cantSet": {"test"},
"T": {"2016-12-06T19:09:05+01:00"},
"Tptr": {"2016-12-06T19:09:05+01:00"},
"GoT": {"2016-12-06T19:09:05+01:00"},
"GoTptr": {"2016-12-06T19:09:05+01:00"},
"ST": {"bar"},
}
// ptr return pointer to value. This is useful as `v := []*int8{&int8(1)}` will not compile
func ptr[T any](value T) *T {
return &value
}
func TestToMultipleFields(t *testing.T) {
e := New()
req := httptest.NewRequest(http.MethodGet, "/?id=1&ID=2", nil)
rec := httptest.NewRecorder()
c := e.NewContext(req, rec)
type Root struct {
ID int64 `query:"id"`
Child2 struct {
ID int64
}
Child1 struct {
ID int64 `query:"id"`
}
}
u := new(Root)
err := c.Bind(u)
if assert.NoError(t, err) {
assert.Equal(t, int64(1), u.ID) // perfectly reasonable
assert.Equal(t, int64(1), u.Child1.ID) // untagged struct containing tagged field gets filled (by tag)
assert.Equal(t, int64(0), u.Child2.ID) // untagged struct containing untagged field should not be bind
}
}
func TestBindJSON(t *testing.T) {
testBindOkay(t, strings.NewReader(userJSON), nil, MIMEApplicationJSON)
testBindOkay(t, strings.NewReader(userJSON), dummyQuery, MIMEApplicationJSON)
testBindArrayOkay(t, strings.NewReader(usersJSON), nil, MIMEApplicationJSON)
testBindArrayOkay(t, strings.NewReader(usersJSON), dummyQuery, MIMEApplicationJSON)
testBindError(t, strings.NewReader(invalidContent), MIMEApplicationJSON, &json.SyntaxError{})
testBindError(t, strings.NewReader(userJSONInvalidType), MIMEApplicationJSON, &json.UnmarshalTypeError{})
}
func TestBindXML(t *testing.T) {
testBindOkay(t, strings.NewReader(userXML), nil, MIMEApplicationXML)
testBindOkay(t, strings.NewReader(userXML), dummyQuery, MIMEApplicationXML)
testBindArrayOkay(t, strings.NewReader(userXML), nil, MIMEApplicationXML)
testBindArrayOkay(t, strings.NewReader(userXML), dummyQuery, MIMEApplicationXML)
testBindError(t, strings.NewReader(invalidContent), MIMEApplicationXML, errors.New(""))
testBindError(t, strings.NewReader(userXMLConvertNumberError), MIMEApplicationXML, &strconv.NumError{})
testBindError(t, strings.NewReader(userXMLUnsupportedTypeError), MIMEApplicationXML, &xml.SyntaxError{})
testBindOkay(t, strings.NewReader(userXML), nil, MIMETextXML)
testBindOkay(t, strings.NewReader(userXML), dummyQuery, MIMETextXML)
testBindError(t, strings.NewReader(invalidContent), MIMETextXML, errors.New(""))
testBindError(t, strings.NewReader(userXMLConvertNumberError), MIMETextXML, &strconv.NumError{})
testBindError(t, strings.NewReader(userXMLUnsupportedTypeError), MIMETextXML, &xml.SyntaxError{})
}
func TestBindForm(t *testing.T) {
testBindOkay(t, strings.NewReader(userForm), nil, MIMEApplicationForm)
testBindOkay(t, strings.NewReader(userForm), dummyQuery, MIMEApplicationForm)
e := New()
req := httptest.NewRequest(http.MethodPost, "/", strings.NewReader(userForm))
rec := httptest.NewRecorder()
c := e.NewContext(req, rec)
req.Header.Set(HeaderContentType, MIMEApplicationForm)
err := c.Bind(&[]struct{ Field string }{})
assert.Error(t, err)
}
func TestBindQueryParams(t *testing.T) {
e := New()
req := httptest.NewRequest(http.MethodGet, "/?id=1&name=Jon+Snow", nil)
rec := httptest.NewRecorder()
c := e.NewContext(req, rec)
u := new(user)
err := c.Bind(u)
if assert.NoError(t, err) {
assert.Equal(t, 1, u.ID)
assert.Equal(t, "Jon Snow", u.Name)
}
}
func TestBindQueryParamsCaseInsensitive(t *testing.T) {
e := New()
req := httptest.NewRequest(http.MethodGet, "/?ID=1&NAME=Jon+Snow", nil)
rec := httptest.NewRecorder()
c := e.NewContext(req, rec)
u := new(user)
err := c.Bind(u)
if assert.NoError(t, err) {
assert.Equal(t, 1, u.ID)
assert.Equal(t, "Jon Snow", u.Name)
}
}
func TestBindQueryParamsCaseSensitivePrioritized(t *testing.T) {
e := New()
req := httptest.NewRequest(http.MethodGet, "/?id=1&ID=2&NAME=Jon+Snow&name=Jon+Doe", nil)
rec := httptest.NewRecorder()
c := e.NewContext(req, rec)
u := new(user)
err := c.Bind(u)
if assert.NoError(t, err) {
assert.Equal(t, 1, u.ID)
assert.Equal(t, "Jon Doe", u.Name)
}
}
func TestBindHeaderParam(t *testing.T) {
e := New()
req := httptest.NewRequest(http.MethodGet, "/", nil)
req.Header.Set("Name", "Jon Doe")
req.Header.Set("Id", "2")
rec := httptest.NewRecorder()
c := e.NewContext(req, rec)
u := new(user)
err := BindHeaders(c, u)
if assert.NoError(t, err) {
assert.Equal(t, 2, u.ID)
assert.Equal(t, "Jon Doe", u.Name)
}
}
func TestBindHeaderParamBadType(t *testing.T) {
e := New()
req := httptest.NewRequest(http.MethodGet, "/", nil)
req.Header.Set("Id", "salamander")
rec := httptest.NewRecorder()
c := e.NewContext(req, rec)
u := new(user)
err := BindHeaders(c, u)
assert.Error(t, err)
httpErr, ok := err.(*HTTPError)
if assert.True(t, ok) {
assert.Equal(t, http.StatusBadRequest, httpErr.Code)
}
}
func TestBindUnmarshalParam(t *testing.T) {
e := New()
req := httptest.NewRequest(http.MethodGet, "/?ts=2016-12-06T19:09:05Z&sa=one,two,three&ta=2016-12-06T19:09:05Z&ta=2016-12-06T19:09:05Z&ST=baz", nil)
rec := httptest.NewRecorder()
c := e.NewContext(req, rec)
result := struct {
T Timestamp `query:"ts"`
ST Struct
StWithTag struct {
Foo string `query:"st"`
}
TA []Timestamp `query:"ta"`
SA StringArray `query:"sa"`
}{}
err := c.Bind(&result)
ts := Timestamp(time.Date(2016, 12, 6, 19, 9, 5, 0, time.UTC))
if assert.NoError(t, err) {
// assert.Equal( Timestamp(reflect.TypeOf(&Timestamp{}), time.Date(2016, 12, 6, 19, 9, 5, 0, time.UTC)), result.T)
assert.Equal(t, ts, result.T)
assert.Equal(t, StringArray([]string{"one", "two", "three"}), result.SA)
assert.Equal(t, []Timestamp{ts, ts}, result.TA)
assert.Equal(t, Struct{""}, result.ST) // child struct does not have a field with matching tag
assert.Equal(t, "baz", result.StWithTag.Foo) // child struct has field with matching tag
}
}
func TestBindUnmarshalText(t *testing.T) {
e := New()
req := httptest.NewRequest(http.MethodGet, "/?ts=2016-12-06T19:09:05Z&sa=one,two,three&ta=2016-12-06T19:09:05Z&ta=2016-12-06T19:09:05Z&ST=baz", nil)
rec := httptest.NewRecorder()
c := e.NewContext(req, rec)
result := struct {
T time.Time `query:"ts"`
ST Struct
TA []time.Time `query:"ta"`
SA StringArray `query:"sa"`
}{}
err := c.Bind(&result)
ts := time.Date(2016, 12, 6, 19, 9, 5, 0, time.UTC)
if assert.NoError(t, err) {
// assert.Equal(t, Timestamp(reflect.TypeOf(&Timestamp{}), time.Date(2016, 12, 6, 19, 9, 5, 0, time.UTC)), result.T)
assert.Equal(t, ts, result.T)
assert.Equal(t, StringArray([]string{"one", "two", "three"}), result.SA)
assert.Equal(t, []time.Time{ts, ts}, result.TA)
assert.Equal(t, Struct{""}, result.ST) // field in child struct does not have tag
}
}
func TestBindUnmarshalParamPtr(t *testing.T) {
e := New()
req := httptest.NewRequest(http.MethodGet, "/?ts=2016-12-06T19:09:05Z", nil)
rec := httptest.NewRecorder()
c := e.NewContext(req, rec)
result := struct {
Tptr *Timestamp `query:"ts"`
}{}
err := c.Bind(&result)
if assert.NoError(t, err) {
assert.Equal(t, Timestamp(time.Date(2016, 12, 6, 19, 9, 5, 0, time.UTC)), *result.Tptr)
}
}
func TestBindUnmarshalParamAnonymousFieldPtr(t *testing.T) {
e := New()
req := httptest.NewRequest(http.MethodGet, "/?baz=1", nil)
rec := httptest.NewRecorder()
c := e.NewContext(req, rec)
result := struct {
*Bar
}{&Bar{}}
err := c.Bind(&result)
if assert.NoError(t, err) {
assert.Equal(t, 1, result.Baz)
}
}
func TestBindUnmarshalParamAnonymousFieldPtrNil(t *testing.T) {
e := New()
req := httptest.NewRequest(http.MethodGet, "/?baz=1", nil)
rec := httptest.NewRecorder()
c := e.NewContext(req, rec)
result := struct {
*Bar
}{}
err := c.Bind(&result)
if assert.NoError(t, err) {
assert.Nil(t, result.Bar)
}
}
func TestBindUnmarshalParamAnonymousFieldPtrCustomTag(t *testing.T) {
e := New()
req := httptest.NewRequest(http.MethodGet, `/?bar={"baz":100}&baz=1`, nil)
rec := httptest.NewRecorder()
c := e.NewContext(req, rec)
result := struct {
*Bar `json:"bar" query:"bar"`
}{&Bar{}}
err := c.Bind(&result)
assert.Contains(t, err.Error(), "query/param/form tags are not allowed with anonymous struct field")
}
func TestBindUnmarshalTextPtr(t *testing.T) {
e := New()
req := httptest.NewRequest(http.MethodGet, "/?ts=2016-12-06T19:09:05Z", nil)
rec := httptest.NewRecorder()
c := e.NewContext(req, rec)
result := struct {
Tptr *time.Time `query:"ts"`
}{}
err := c.Bind(&result)
if assert.NoError(t, err) {
assert.Equal(t, time.Date(2016, 12, 6, 19, 9, 5, 0, time.UTC), *result.Tptr)
}
}
func TestBindMultipartForm(t *testing.T) {
bodyBuffer := new(bytes.Buffer)
mw := multipart.NewWriter(bodyBuffer)
mw.WriteField("id", "1")
mw.WriteField("name", "Jon Snow")
mw.Close()
body := bodyBuffer.Bytes()
testBindOkay(t, bytes.NewReader(body), nil, mw.FormDataContentType())
testBindOkay(t, bytes.NewReader(body), dummyQuery, mw.FormDataContentType())
}
func TestBindUnsupportedMediaType(t *testing.T) {
testBindError(t, strings.NewReader(invalidContent), MIMEApplicationJSON, &json.SyntaxError{})
}
func TestDefaultBinder_bindDataToMap(t *testing.T) {
exampleData := map[string][]string{
"multiple": {"1", "2"},
"single": {"3"},
}
t.Run("ok, bind to map[string]string", func(t *testing.T) {
dest := map[string]string{}
assert.NoError(t, bindData(&dest, exampleData, "param", nil))
assert.Equal(t,
map[string]string{
"multiple": "1",
"single": "3",
},
dest,
)
})
t.Run("ok, bind to map[string]string with nil map", func(t *testing.T) {
var dest map[string]string
assert.NoError(t, bindData(&dest, exampleData, "param", nil))
assert.Equal(t,
map[string]string{
"multiple": "1",
"single": "3",
},
dest,
)
})
t.Run("ok, bind to map[string][]string", func(t *testing.T) {
dest := map[string][]string{}
assert.NoError(t, bindData(&dest, exampleData, "param", nil))
assert.Equal(t,
map[string][]string{
"multiple": {"1", "2"},
"single": {"3"},
},
dest,
)
})
t.Run("ok, bind to map[string][]string with nil map", func(t *testing.T) {
var dest map[string][]string
assert.NoError(t, bindData(&dest, exampleData, "param", nil))
assert.Equal(t,
map[string][]string{
"multiple": {"1", "2"},
"single": {"3"},
},
dest,
)
})
t.Run("ok, bind to map[string]interface", func(t *testing.T) {
dest := map[string]any{}
assert.NoError(t, bindData(&dest, exampleData, "param", nil))
assert.Equal(t,
map[string]any{
"multiple": "1",
"single": "3",
},
dest,
)
})
t.Run("ok, bind to map[string]interface with nil map", func(t *testing.T) {
var dest map[string]any
assert.NoError(t, bindData(&dest, exampleData, "param", nil))
assert.Equal(t,
map[string]any{
"multiple": "1",
"single": "3",
},
dest,
)
})
t.Run("ok, bind to map[string]int skips", func(t *testing.T) {
dest := map[string]int{}
assert.NoError(t, bindData(&dest, exampleData, "param", nil))
assert.Equal(t, map[string]int{}, dest)
})
t.Run("ok, bind to map[string]int skips with nil map", func(t *testing.T) {
var dest map[string]int
assert.NoError(t, bindData(&dest, exampleData, "param", nil))
assert.Equal(t, map[string]int(nil), dest)
})
t.Run("ok, bind to map[string][]int skips", func(t *testing.T) {
dest := map[string][]int{}
assert.NoError(t, bindData(&dest, exampleData, "param", nil))
assert.Equal(t, map[string][]int{}, dest)
})
t.Run("ok, bind to map[string][]int skips with nil map", func(t *testing.T) {
var dest map[string][]int
assert.NoError(t, bindData(&dest, exampleData, "param", nil))
assert.Equal(t, map[string][]int(nil), dest)
})
}
func TestBindbindData(t *testing.T) {
ts := new(bindTestStruct)
err := bindData(ts, values, "form", nil)
assert.NoError(t, err)
assert.Equal(t, 0, ts.I)
assert.Equal(t, int8(0), ts.I8)
assert.Equal(t, int16(0), ts.I16)
assert.Equal(t, int32(0), ts.I32)
assert.Equal(t, int64(0), ts.I64)
assert.Equal(t, uint(0), ts.UI)
assert.Equal(t, uint8(0), ts.UI8)
assert.Equal(t, uint16(0), ts.UI16)
assert.Equal(t, uint32(0), ts.UI32)
assert.Equal(t, uint64(0), ts.UI64)
assert.Equal(t, false, ts.B)
assert.Equal(t, float32(0), ts.F32)
assert.Equal(t, float64(0), ts.F64)
assert.Equal(t, "", ts.S)
assert.Equal(t, "", ts.cantSet)
}
func TestBindParam(t *testing.T) {
e := New()
req := httptest.NewRequest(http.MethodGet, "/", nil)
rec := httptest.NewRecorder()
c := e.NewContext(req, rec)
c.InitializeRoute(
&RouteInfo{Path: "/users/:id/:name"},
&PathValues{
{Name: "id", Value: "1"},
{Name: "name", Value: "Jon Snow"},
},
)
u := new(user)
err := c.Bind(u)
if assert.NoError(t, err) {
assert.Equal(t, 1, u.ID)
assert.Equal(t, "Jon Snow", u.Name)
}
// Second test for the absence of a param
c2 := e.NewContext(req, rec)
c2.InitializeRoute(
&RouteInfo{Path: "/users/:id"},
&PathValues{
{Name: "id", Value: "1"},
},
)
u = new(user)
err = c2.Bind(u)
if assert.NoError(t, err) {
assert.Equal(t, 1, u.ID)
assert.Equal(t, "", u.Name)
}
// Bind something with param and post data payload
body := bytes.NewBufferString(`{ "name": "Jon Snow" }`)
e2 := New()
req2 := httptest.NewRequest(http.MethodPost, "/", body)
req2.Header.Set(HeaderContentType, MIMEApplicationJSON)
rec2 := httptest.NewRecorder()
c3 := e2.NewContext(req2, rec2)
c3.InitializeRoute(
&RouteInfo{Path: "/users/:id"},
&PathValues{
{Name: "id", Value: "1"},
},
)
u = new(user)
err = c3.Bind(u)
if assert.NoError(t, err) {
assert.Equal(t, 1, u.ID)
assert.Equal(t, "Jon Snow", u.Name)
}
}
func TestBindUnmarshalTypeError(t *testing.T) {
body := bytes.NewBufferString(`{ "id": "text" }`)
e := New()
req := httptest.NewRequest(http.MethodPost, "/", body)
req.Header.Set(HeaderContentType, MIMEApplicationJSON)
rec := httptest.NewRecorder()
c := e.NewContext(req, rec)
u := new(user)
err := c.Bind(u)
assert.EqualError(t, err, `code=400, message=Bad Request, err=json: cannot unmarshal string into Go struct field user.id of type int`)
}
func TestBindSetWithProperType(t *testing.T) {
ts := new(bindTestStruct)
typ := reflect.TypeFor[bindTestStruct]()
val := reflect.ValueOf(ts).Elem()
for i := 0; i < typ.NumField(); i++ {
typeField := typ.Field(i)
structField := val.Field(i)
if !structField.CanSet() {
continue
}
if len(values[typeField.Name]) == 0 {
continue
}
val := values[typeField.Name][0]
err := setWithProperType(typeField.Type.Kind(), val, structField)
assert.NoError(t, err)
}
assertBindTestStruct(t, ts)
type foo struct {
Bar bytes.Buffer
}
v := &foo{}
typ = reflect.TypeFor[foo]()
val = reflect.ValueOf(v).Elem()
assert.Error(t, setWithProperType(typ.Field(0).Type.Kind(), "5", val.Field(0)))
}
func BenchmarkBindbindDataWithTags(b *testing.B) {
b.ReportAllocs()
ts := new(bindTestStructWithTags)
var err error
b.ResetTimer()
for i := 0; i < b.N; i++ {
err = bindData(ts, values, "form", nil)
}
assert.NoError(b, err)
assertBindTestStruct(b, (*bindTestStruct)(ts))
}
func assertBindTestStruct(tb testing.TB, ts *bindTestStruct) {
assert.Equal(tb, 0, ts.I)
assert.Equal(tb, int8(8), ts.I8)
assert.Equal(tb, int16(16), ts.I16)
assert.Equal(tb, int32(32), ts.I32)
assert.Equal(tb, int64(64), ts.I64)
assert.Equal(tb, uint(0), ts.UI)
assert.Equal(tb, uint8(8), ts.UI8)
assert.Equal(tb, uint16(16), ts.UI16)
assert.Equal(tb, uint32(32), ts.UI32)
assert.Equal(tb, uint64(64), ts.UI64)
assert.Equal(tb, true, ts.B)
assert.Equal(tb, float32(32.5), ts.F32)
assert.Equal(tb, float64(64.5), ts.F64)
assert.Equal(tb, "test", ts.S)
assert.Equal(tb, "", ts.GetCantSet())
}
func testBindOkay(t *testing.T, r io.Reader, query url.Values, ctype string) {
e := New()
path := "/"
if len(query) > 0 {
path += "?" + query.Encode()
}
req := httptest.NewRequest(http.MethodPost, path, r)
rec := httptest.NewRecorder()
c := e.NewContext(req, rec)
req.Header.Set(HeaderContentType, ctype)
u := new(user)
err := c.Bind(u)
if assert.Equal(t, nil, err) {
assert.Equal(t, 1, u.ID)
assert.Equal(t, "Jon Snow", u.Name)
}
}
func testBindArrayOkay(t *testing.T, r io.Reader, query url.Values, ctype string) {
e := New()
path := "/"
if len(query) > 0 {
path += "?" + query.Encode()
}
req := httptest.NewRequest(http.MethodPost, path, r)
rec := httptest.NewRecorder()
c := e.NewContext(req, rec)
req.Header.Set(HeaderContentType, ctype)
u := []user{}
err := c.Bind(&u)
if assert.NoError(t, err) {
assert.Equal(t, 1, len(u))
assert.Equal(t, 1, u[0].ID)
assert.Equal(t, "Jon Snow", u[0].Name)
}
}
func testBindError(t *testing.T, r io.Reader, ctype string, expectedInternal error) {
e := New()
req := httptest.NewRequest(http.MethodPost, "/", r)
rec := httptest.NewRecorder()
c := e.NewContext(req, rec)
req.Header.Set(HeaderContentType, ctype)
u := new(user)
err := c.Bind(u)
switch {
case strings.HasPrefix(ctype, MIMEApplicationJSON), strings.HasPrefix(ctype, MIMEApplicationXML), strings.HasPrefix(ctype, MIMETextXML),
strings.HasPrefix(ctype, MIMEApplicationForm), strings.HasPrefix(ctype, MIMEMultipartForm):
if assert.IsType(t, new(HTTPError), err) {
assert.Equal(t, http.StatusBadRequest, err.(*HTTPError).Code)
assert.IsType(t, expectedInternal, err.(*HTTPError).Unwrap())
}
default:
if assert.IsType(t, new(HTTPError), err) {
assert.Equal(t, ErrUnsupportedMediaType, err)
assert.IsType(t, expectedInternal, err.(*HTTPError).Unwrap())
}
}
}
func TestDefaultBinder_BindToStructFromMixedSources(t *testing.T) {
// tests to check binding behaviour when multiple sources (path params, query params and request body) are in use
// binding is done in steps and one source could overwrite previous source bound data
// these tests are to document this behaviour and detect further possible regressions when bind implementation is changed
type Opts struct {
Node string `json:"node" form:"node" query:"node" param:"node"`
Lang string
ID int `json:"id" form:"id" query:"id"`
}
var testCases = []struct {
givenContent io.Reader
whenBindTarget any
expect any
name string
givenURL string
givenMethod string
expectError string
whenNoPathValues bool
}{
{
name: "ok, POST bind to struct with: path param + query param + body",
givenMethod: http.MethodPost,
givenURL: "/api/real_node/endpoint?node=xxx",
givenContent: strings.NewReader(`{"id": 1}`),
expect: &Opts{ID: 1, Node: "node_from_path"}, // query params are not used, node is filled from path
},
{
name: "ok, PUT bind to struct with: path param + query param + body",
givenMethod: http.MethodPut,
givenURL: "/api/real_node/endpoint?node=xxx",
givenContent: strings.NewReader(`{"id": 1}`),
expect: &Opts{ID: 1, Node: "node_from_path"}, // query params are not used
},
{
name: "ok, GET bind to struct with: path param + query param + body",
givenMethod: http.MethodGet,
givenURL: "/api/real_node/endpoint?node=xxx",
givenContent: strings.NewReader(`{"id": 1}`),
expect: &Opts{ID: 1, Node: "xxx"}, // query overwrites previous path value
},
{
name: "ok, GET bind to struct with: path param + query param + body",
givenMethod: http.MethodGet,
givenURL: "/api/real_node/endpoint?node=xxx",
givenContent: strings.NewReader(`{"id": 1, "node": "zzz"}`),
expect: &Opts{ID: 1, Node: "zzz"}, // body is bound last and overwrites previous (path,query) values
},
{
name: "ok, DELETE bind to struct with: path param + query param + body",
givenMethod: http.MethodDelete,
givenURL: "/api/real_node/endpoint?node=xxx",
givenContent: strings.NewReader(`{"id": 1, "node": "zzz"}`),
expect: &Opts{ID: 1, Node: "zzz"}, // for DELETE body is bound after query params
},
{
name: "ok, QUERY bind to struct with: path param + query param + body",
givenMethod: QUERY,
givenURL: "/api/real_node/endpoint?node=xxx",
givenContent: strings.NewReader(`{"id": 1}`),
expect: &Opts{ID: 1, Node: "xxx"}, // for QUERY query overwrites previous path value (like GET)
},
{
name: "ok, POST bind to struct with: path param + body",
givenMethod: http.MethodPost,
givenURL: "/api/real_node/endpoint",
givenContent: strings.NewReader(`{"id": 1}`),
expect: &Opts{ID: 1, Node: "node_from_path"},
},
{
name: "ok, POST bind to struct with path + query + body = body has priority",
givenMethod: http.MethodPost,
givenURL: "/api/real_node/endpoint?node=xxx",
givenContent: strings.NewReader(`{"id": 1, "node": "zzz"}`),
expect: &Opts{ID: 1, Node: "zzz"}, // field value from content has higher priority
},
{
name: "nok, POST body bind failure",
givenMethod: http.MethodPost,
givenURL: "/api/real_node/endpoint?node=xxx",
givenContent: strings.NewReader(`{`),
expect: &Opts{ID: 0, Node: "node_from_path"}, // query binding has already modified bind target
expectError: "code=400, message=Bad Request, err=unexpected end of JSON input",
},
{
name: "nok, GET with body bind failure when types are not convertible",
givenMethod: http.MethodGet,
givenURL: "/api/real_node/endpoint?id=nope",
givenContent: strings.NewReader(`{"id": 1, "node": "zzz"}`),
expect: &Opts{ID: 0, Node: "node_from_path"}, // path params binding has already modified bind target
expectError: `code=400, message=Bad Request, err=id: strconv.ParseInt: parsing "nope": invalid syntax`,
},
{
name: "nok, GET body bind failure - trying to bind json array to struct",
givenMethod: http.MethodGet,
givenURL: "/api/real_node/endpoint?node=xxx",
givenContent: strings.NewReader(`[{"id": 1}]`),
expect: &Opts{ID: 0, Node: "xxx"}, // query binding has already modified bind target
expectError: `code=400, message=Bad Request, err=json: cannot unmarshal array into Go value of type echo.Opts`,
},
{ // query param is ignored as we do not know where exactly to bind it in slice
name: "ok, GET bind to struct slice, ignore query param",
givenMethod: http.MethodGet,
givenURL: "/api/real_node/endpoint?node=xxx",
givenContent: strings.NewReader(`[{"id": 1}]`),
whenNoPathValues: true,
whenBindTarget: &[]Opts{},
expect: &[]Opts{
{ID: 1, Node: ""},
},
},
{ // binding query params interferes with body. b.BindBody() should be used to bind only body to slice
name: "ok, POST binding to slice should not be affected query params types",
givenMethod: http.MethodPost,
givenURL: "/api/real_node/endpoint?id=nope&node=xxx",
givenContent: strings.NewReader(`[{"id": 1}]`),
whenNoPathValues: true,
whenBindTarget: &[]Opts{},
expect: &[]Opts{{ID: 1}},
expectError: "",
},
{ // path param is ignored as we do not know where exactly to bind it in slice
name: "ok, GET bind to struct slice, ignore path param",
givenMethod: http.MethodGet,
givenURL: "/api/real_node/endpoint?node=xxx",
givenContent: strings.NewReader(`[{"id": 1}]`),
whenBindTarget: &[]Opts{},
expect: &[]Opts{
{ID: 1, Node: ""},
},
},
{
name: "ok, GET body bind json array to slice",
givenMethod: http.MethodGet,
givenURL: "/api/real_node/endpoint",
givenContent: strings.NewReader(`[{"id": 1}]`),
whenNoPathValues: true,
whenBindTarget: &[]Opts{},
expect: &[]Opts{{ID: 1, Node: ""}},
expectError: "",
},
}
for _, tc := range testCases {
t.Run(tc.name, func(t *testing.T) {
e := New()
// assume route we are testing is "/api/:node/endpoint?some_query_params=here"
req := httptest.NewRequest(tc.givenMethod, tc.givenURL, tc.givenContent)
req.Header.Set(HeaderContentType, MIMEApplicationJSON)
rec := httptest.NewRecorder()
c := e.NewContext(req, rec)
if !tc.whenNoPathValues {
c.SetPathValues(PathValues{
{Name: "node", Value: "node_from_path"},
})
}
var bindTarget any
if tc.whenBindTarget != nil {
bindTarget = tc.whenBindTarget
} else {
bindTarget = &Opts{}
}
b := new(DefaultBinder)
err := b.Bind(c, bindTarget)
if tc.expectError != "" {
assert.EqualError(t, err, tc.expectError)
} else {
assert.NoError(t, err)
}
assert.Equal(t, tc.expect, bindTarget)
})
}
}
func TestDefaultBinder_BindBody(t *testing.T) {
// tests to check binding behaviour when multiple sources (path params, query params and request body) are in use
// generally when binding from request body - URL and path params are ignored - unless form is being bound.
// these tests are to document this behaviour and detect further possible regressions when bind implementation is changed
type Node struct {
Node string `json:"node" xml:"node" form:"node" query:"node" param:"node"`
ID int `json:"id" xml:"id" form:"id" query:"id"`
}
type Nodes struct {
Nodes []Node `xml:"node" form:"node"`
}
var testCases = []struct {
givenContent io.Reader
whenBindTarget any
expect any
name string
givenURL string
givenMethod string
givenContentType string
expectError string
whenNoPathValues bool
whenChunkedBody bool
}{
{
name: "ok, JSON POST bind to struct with: path + query + empty field in body",
givenURL: "/api/real_node/endpoint?node=xxx",
givenMethod: http.MethodPost,
givenContentType: MIMEApplicationJSON,
givenContent: strings.NewReader(`{"id": 1}`),
expect: &Node{ID: 1, Node: ""}, // path params or query params should not interfere with body
},
{
name: "ok, JSON POST bind to struct with: path + query + body",
givenURL: "/api/real_node/endpoint?node=xxx",
givenMethod: http.MethodPost,
givenContentType: MIMEApplicationJSON,
givenContent: strings.NewReader(`{"id": 1, "node": "zzz"}`),
expect: &Node{ID: 1, Node: "zzz"}, // field value from content has higher priority
},
{
name: "ok, JSON POST body bind json array to slice (has matching path/query params)",
givenURL: "/api/real_node/endpoint?node=xxx",
givenMethod: http.MethodPost,
givenContentType: MIMEApplicationJSON,
givenContent: strings.NewReader(`[{"id": 1}]`),
whenNoPathValues: true,
whenBindTarget: &[]Node{},
expect: &[]Node{{ID: 1, Node: ""}},
expectError: "",
},
{ // rare case as GET is not usually used to send request body
name: "ok, JSON GET bind to struct with: path + query + empty field in body",
givenURL: "/api/real_node/endpoint?node=xxx",
givenMethod: http.MethodGet,
givenContentType: MIMEApplicationJSON,
givenContent: strings.NewReader(`{"id": 1}`),
expect: &Node{ID: 1, Node: ""}, // path params or query params should not interfere with body
},
{ // rare case as GET is not usually used to send request body
name: "ok, JSON GET bind to struct with: path + query + body",