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// Copyright 2020 Northern.tech AS
//
// 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 routing
import (
"net/http"
"reflect"
"runtime"
"testing"
"github.com/ant0ine/go-json-rest/rest"
rtest "github.com/ant0ine/go-json-rest/rest/test"
)
func TestSupportsMethod(t *testing.T) {
var sets = []struct {
exp bool
method string
supported []string
}{
{
true,
http.MethodOptions,
[]string{
http.MethodGet,
http.MethodPut,
http.MethodOptions,
},
},
{
false,
http.MethodOptions,
[]string{
http.MethodGet,
http.MethodPut,
},
},
}
for _, tv := range sets {
if supportsMethod(tv.method, tv.supported) != tv.exp {
t.Errorf("failed case: %+v", tv)
}
}
}
// We can't compare functions, so let's take the hard way and extract
// func name from runtime
func funcName(f interface{}) string {
p := reflect.ValueOf(f).Pointer()
rfunc := runtime.FuncForPC(p)
return rfunc.Name()
}
func TestAutogenOptionRoutes(t *testing.T) {
// make sure that dummy and options are different to prevent
// the compiler making this a single symbol
dummy := func(w rest.ResponseWriter, r *rest.Request) {
// dummy
w.WriteJson(struct {
x int
}{
2,
})
}
options := func(w rest.ResponseWriter, r *rest.Request) {
// dummy
w.WriteJson(struct {
x int
}{
1,
})
}
gen := func(methods []string) rest.HandlerFunc {
return options
}
routes := []*rest.Route{
// expecting rest.Options(..) to be added for /foo
rest.Get("/foo", dummy),
rest.Post("/foo", dummy),
// no extra OPTIONS handler for /bar
rest.Get("/bar", dummy),
rest.Options("/bar", dummy),
}
augmented := AutogenOptionsRoutes(routes, gen)
type expHandler map[string]rest.HandlerFunc
exp := map[string]expHandler{
"/foo": {
http.MethodGet: dummy,
http.MethodPost: dummy,
http.MethodOptions: options,
},
"/bar": {
http.MethodGet: dummy,
http.MethodOptions: dummy,
},
}
// we're expecting 5 handlers in total
expCount := 5
if len(augmented) != expCount {
t.Errorf("got %d handlers instead of %d", len(augmented), expCount)
}
for _, r := range augmented {
v, ok := exp[r.PathExp]
if ok != true {
t.Errorf("failed with route %+v, route not present", r)
}
h, ok := v[r.HttpMethod]
if ok != true {
t.Errorf("failed with route %+v, method not present", r)
}
if funcName(r.Func) != funcName(h) {
t.Errorf("failed with route %+v, different handler", r)
}
}
}
//
func TestAutogenOptionHeaders(t *testing.T) {
suppmeth := []string{
http.MethodGet,
http.MethodPut,
}
api := rest.NewApi()
api.Use(rest.DefaultDevStack...)
router, _ := rest.MakeRouter(
rest.Options("/test", AllowHeaderOptionsGenerator(suppmeth)),
)
api.SetApp(router)
rec := rtest.RunRequest(t, api.MakeHandler(),
rtest.MakeSimpleRequest(http.MethodOptions,
"http://1.2.3.4/test", nil))
allowmeth := rec.Recorder.HeaderMap[http.CanonicalHeaderKey("Allow")]
// expecting only 2 allowed methods (should OPTIONS be
// included in Allow too?)
if len(allowmeth) != 2 {
t.Errorf("too many allowed methods: %+v", allowmeth)
}
for _, sh := range suppmeth {
var found bool
for _, s := range allowmeth {
if sh == s {
found = true
break
}
}
if !found {
t.Errorf("supported method %s not in allowed: %+v",
sh, allowmeth)
}
}
}
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