Binding middleware for tango
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// Copyright 2014 martini-contrib/binding Authors
// Copyright 2014 Unknwon
//
// Licensed under the Apache License, Version 2.0 (the "License"): you may
// not use this file except in compliance with the License. You may obtain
// a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations
// under the License.
package binding
import (
"fmt"
"net/http"
"net/http/httptest"
"reflect"
"strings"
"testing"
"gitea.com/lunny/tango"
. "github.com/smartystreets/goconvey/convey"
)
var formTestCases = []formTestCase{
{
description: "Happy path",
shouldSucceed: true,
payload: `title=Glorious+Post+Title&content=Lorem+ipsum+dolor+sit+amet`,
contentType: formContentType,
expected: Post{Title: "Glorious Post Title", Content: "Lorem ipsum dolor sit amet"},
},
{
description: "Happy path with interface",
shouldSucceed: true,
withInterface: true,
payload: `title=Glorious+Post+Title&content=Lorem+ipsum+dolor+sit+amet`,
contentType: formContentType,
expected: Post{Title: "Glorious Post Title", Content: "Lorem ipsum dolor sit amet"},
},
{
description: "Empty payload",
shouldSucceed: false,
payload: ``,
contentType: formContentType,
expected: Post{},
},
{
description: "Empty content type",
shouldSucceed: false,
payload: `title=Glorious+Post+Title&content=Lorem+ipsum+dolor+sit+amet`,
contentType: ``,
expected: Post{},
},
{
description: "Malformed form body",
shouldSucceed: false,
payload: `title=%2`,
contentType: formContentType,
expected: Post{},
},
{
description: "With nested and embedded structs",
shouldSucceed: true,
payload: `title=Glorious+Post+Title&id=1&name=Matt+Holt`,
contentType: formContentType,
expected: BlogPost{Post: Post{Title: "Glorious Post Title"}, Id: 1, Author: Person{Name: "Matt Holt"}},
},
{
description: "Required embedded struct field not specified",
shouldSucceed: false,
payload: `id=1&name=Matt+Holt`,
contentType: formContentType,
expected: BlogPost{Id: 1, Author: Person{Name: "Matt Holt"}},
},
{
description: "Required nested struct field not specified",
shouldSucceed: false,
payload: `title=Glorious+Post+Title&id=1`,
contentType: formContentType,
expected: BlogPost{Post: Post{Title: "Glorious Post Title"}, Id: 1},
},
{
description: "Multiple values into slice",
shouldSucceed: true,
payload: `title=Glorious+Post+Title&id=1&name=Matt+Holt&rating=4&rating=3&rating=5`,
contentType: formContentType,
expected: BlogPost{Post: Post{Title: "Glorious Post Title"}, Id: 1, Author: Person{Name: "Matt Holt"}, Ratings: []int{4, 3, 5}},
},
{
description: "Unexported field",
shouldSucceed: true,
payload: `title=Glorious+Post+Title&id=1&name=Matt+Holt&unexported=foo`,
contentType: formContentType,
expected: BlogPost{Post: Post{Title: "Glorious Post Title"}, Id: 1, Author: Person{Name: "Matt Holt"}},
},
{
description: "Query string POST",
shouldSucceed: true,
payload: `title=Glorious+Post+Title&content=Lorem+ipsum+dolor+sit+amet`,
contentType: formContentType,
expected: Post{Title: "Glorious Post Title", Content: "Lorem ipsum dolor sit amet"},
},
{
description: "Query string with Content-Type (POST request)",
shouldSucceed: true,
queryString: "?title=Glorious+Post+Title&content=Lorem+ipsum+dolor+sit+amet",
payload: ``,
contentType: formContentType,
expected: Post{Title: "Glorious Post Title", Content: "Lorem ipsum dolor sit amet"},
},
{
description: "Query string without Content-Type (GET request)",
shouldSucceed: true,
method: "GET",
queryString: "?title=Glorious+Post+Title&content=Lorem+ipsum+dolor+sit+amet",
payload: ``,
expected: Post{Title: "Glorious Post Title", Content: "Lorem ipsum dolor sit amet"},
},
{
description: "Embed struct pointer",
shouldSucceed: true,
deepEqual: true,
method: "GET",
queryString: "?name=Glorious+Post+Title&email=Lorem+ipsum+dolor+sit+amet",
payload: ``,
expected: EmbedPerson{&Person{Name: "Glorious Post Title", Email: "Lorem ipsum dolor sit amet"}},
},
{
description: "Embed struct pointer remain nil if not binded",
shouldSucceed: true,
deepEqual: true,
method: "GET",
queryString: "?",
payload: ``,
expected: EmbedPerson{nil},
},
{
description: "Custom error handler",
shouldSucceed: true,
deepEqual: true,
method: "GET",
queryString: "?",
payload: ``,
expected: CustomErrorHandle{},
},
}
func init() {
AddRule(&Rule{
func(rule string) bool {
return rule == "CustomRule"
},
func(_ Errors, _ string, _ interface{}) bool {
return false
},
})
SetNameMapper(nameMapper)
}
func Test_Form(t *testing.T) {
Convey("Test form", t, func() {
for _, testCase := range formTestCases {
performFormTest(t, testCase)
}
})
}
/*
var obj interface{}
var errors Errors
*/
type FormAction struct {
Binder
}
func (v *FormAction) Get() error {
return v.Post()
}
func (v *FormAction) Post() error {
errors = v.MapForm(obj)
if errors.Len() > 0 {
return fmt.Errorf("%+v", errors)
}
return nil
}
func performFormTest(t *testing.T, testCase formTestCase) {
resp := httptest.NewRecorder()
m := tango.Classic()
m.Use(Bind())
formTestHandler := func(actual interface{}, errs Errors) {
if testCase.shouldSucceed && len(errs) > 0 {
So(len(errs), ShouldEqual, 0)
} else if !testCase.shouldSucceed && len(errs) == 0 {
So(len(errs), ShouldNotEqual, 0)
}
expString := fmt.Sprintf("%+v", testCase.expected)
actString := fmt.Sprintf("%+v", actual)
if actString != expString && !(testCase.deepEqual && reflect.DeepEqual(testCase.expected, actual)) {
So(actString, ShouldEqual, expString)
}
}
obj = reflect.New(reflect.TypeOf(testCase.expected)).Interface()
switch testCase.expected.(type) {
case Post:
if testCase.withInterface {
m.Post(testRoute, new(FormAction))
} else {
m.Post(testRoute, new(FormAction))
m.Get(testRoute, new(FormAction))
}
case BlogPost:
m.Post(testRoute, new(FormAction))
case EmbedPerson:
m.Post(testRoute, new(FormAction))
m.Get(testRoute, new(FormAction))
case CustomErrorHandle:
m.Get(testRoute, new(FormAction))
}
if len(testCase.method) == 0 {
testCase.method = "POST"
}
req, err := http.NewRequest(testCase.method, testRoute+testCase.queryString, strings.NewReader(testCase.payload))
if err != nil {
panic(err)
}
req.Header.Set("Content-Type", testCase.contentType)
m.ServeHTTP(resp, req)
switch resp.Code {
case http.StatusNotFound:
if testCase.shouldSucceed {
panic("Routing is messed up in test fixture (got 404): check methods and paths on '" + testCase.description + "'")
}
case http.StatusInternalServerError:
if testCase.shouldSucceed {
panic("Something bad happened on '" + testCase.description + "'")
}
default:
if !testCase.shouldSucceed {
panic("code not equal happened on '" + testCase.description + "'")
}
}
formTestHandler(reflect.ValueOf(obj).Elem().Interface(), errors)
}
type (
formTestCase struct {
description string
shouldSucceed bool
deepEqual bool
withInterface bool
queryString string
payload string
contentType string
expected interface{}
method string
}
)
type defaultForm struct {
Default string `binding:"Default(hello world)"`
}
var f defaultForm
type DefaultAction struct {
Binder
}
func (d DefaultAction) Get() {
d.Bind(&f)
}
func Test_Default(t *testing.T) {
Convey("Test default value", t, func() {
m := tango.Classic()
m.Use(Bind())
m.Get("/", new(DefaultAction))
resp := httptest.NewRecorder()
req, err := http.NewRequest("GET", "/", nil)
So(err, ShouldBeNil)
m.ServeHTTP(resp, req)
So(f.Default, ShouldEqual, "hello world")
})
}