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request_test.go
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/*
Copyright 2014 The Kubernetes Authors.
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 restclient
import (
"bytes"
"errors"
"fmt"
"io"
"io/ioutil"
"net/http"
"net/http/httptest"
"net/url"
"os"
"reflect"
"strings"
"testing"
"time"
"k8s.io/kubernetes/pkg/api"
apierrors "k8s.io/kubernetes/pkg/api/errors"
"k8s.io/kubernetes/pkg/api/testapi"
"k8s.io/kubernetes/pkg/api/unversioned"
"k8s.io/kubernetes/pkg/api/v1"
"k8s.io/kubernetes/pkg/apimachinery/registered"
"k8s.io/kubernetes/pkg/labels"
"k8s.io/kubernetes/pkg/runtime"
"k8s.io/kubernetes/pkg/runtime/serializer/streaming"
"k8s.io/kubernetes/pkg/util/clock"
"k8s.io/kubernetes/pkg/util/flowcontrol"
"k8s.io/kubernetes/pkg/util/httpstream"
"k8s.io/kubernetes/pkg/util/intstr"
utiltesting "k8s.io/kubernetes/pkg/util/testing"
"k8s.io/kubernetes/pkg/watch"
"k8s.io/kubernetes/pkg/watch/versioned"
)
func TestNewRequestSetsAccept(t *testing.T) {
r := NewRequest(nil, "get", &url.URL{Path: "/path/"}, "", ContentConfig{}, Serializers{}, nil, nil)
if r.headers.Get("Accept") != "" {
t.Errorf("unexpected headers: %#v", r.headers)
}
r = NewRequest(nil, "get", &url.URL{Path: "/path/"}, "", ContentConfig{ContentType: "application/other"}, Serializers{}, nil, nil)
if r.headers.Get("Accept") != "application/other, */*" {
t.Errorf("unexpected headers: %#v", r.headers)
}
}
type clientFunc func(req *http.Request) (*http.Response, error)
func (f clientFunc) Do(req *http.Request) (*http.Response, error) {
return f(req)
}
func TestRequestSetsHeaders(t *testing.T) {
server := clientFunc(func(req *http.Request) (*http.Response, error) {
if req.Header.Get("Accept") != "application/other, */*" {
t.Errorf("unexpected headers: %#v", req.Header)
}
return &http.Response{
StatusCode: http.StatusForbidden,
Body: ioutil.NopCloser(bytes.NewReader([]byte{})),
}, nil
})
config := defaultContentConfig()
config.ContentType = "application/other"
serializers := defaultSerializers()
r := NewRequest(server, "get", &url.URL{Path: "/path"}, "", config, serializers, nil, nil)
// Check if all "issue" methods are setting headers.
_ = r.Do()
_, _ = r.Watch()
_, _ = r.Stream()
}
func TestRequestWithErrorWontChange(t *testing.T) {
original := Request{
err: errors.New("test"),
content: ContentConfig{GroupVersion: ®istered.GroupOrDie(api.GroupName).GroupVersion},
}
r := original
changed := r.Param("foo", "bar").
LabelsSelectorParam(labels.Set{"a": "b"}.AsSelector()).
UintParam("uint", 1).
AbsPath("/abs").
Prefix("test").
Suffix("testing").
Namespace("new").
Resource("foos").
Name("bars").
Body("foo").
Timeout(time.Millisecond)
if changed != &r {
t.Errorf("returned request should point to the same object")
}
if !reflect.DeepEqual(changed, &original) {
t.Errorf("expected %#v, got %#v", &original, changed)
}
}
func TestRequestPreservesBaseTrailingSlash(t *testing.T) {
r := &Request{baseURL: &url.URL{}, pathPrefix: "/path/"}
if s := r.URL().String(); s != "/path/" {
t.Errorf("trailing slash should be preserved: %s", s)
}
}
func TestRequestAbsPathPreservesTrailingSlash(t *testing.T) {
r := (&Request{baseURL: &url.URL{}}).AbsPath("/foo/")
if s := r.URL().String(); s != "/foo/" {
t.Errorf("trailing slash should be preserved: %s", s)
}
r = (&Request{baseURL: &url.URL{}}).AbsPath("/foo/")
if s := r.URL().String(); s != "/foo/" {
t.Errorf("trailing slash should be preserved: %s", s)
}
}
func TestRequestAbsPathJoins(t *testing.T) {
r := (&Request{baseURL: &url.URL{}}).AbsPath("foo/bar", "baz")
if s := r.URL().String(); s != "foo/bar/baz" {
t.Errorf("trailing slash should be preserved: %s", s)
}
}
func TestRequestSetsNamespace(t *testing.T) {
r := (&Request{
baseURL: &url.URL{
Path: "/",
},
}).Namespace("foo")
if r.namespace == "" {
t.Errorf("namespace should be set: %#v", r)
}
if s := r.URL().String(); s != "namespaces/foo" {
t.Errorf("namespace should be in path: %s", s)
}
}
func TestRequestOrdersNamespaceInPath(t *testing.T) {
r := (&Request{
baseURL: &url.URL{},
pathPrefix: "/test/",
}).Name("bar").Resource("baz").Namespace("foo")
if s := r.URL().String(); s != "/test/namespaces/foo/baz/bar" {
t.Errorf("namespace should be in order in path: %s", s)
}
}
func TestRequestOrdersSubResource(t *testing.T) {
r := (&Request{
baseURL: &url.URL{},
pathPrefix: "/test/",
}).Name("bar").Resource("baz").Namespace("foo").Suffix("test").SubResource("a", "b")
if s := r.URL().String(); s != "/test/namespaces/foo/baz/bar/a/b/test" {
t.Errorf("namespace should be in order in path: %s", s)
}
}
func TestRequestSetTwiceError(t *testing.T) {
if (&Request{}).Name("bar").Name("baz").err == nil {
t.Errorf("setting name twice should result in error")
}
if (&Request{}).Namespace("bar").Namespace("baz").err == nil {
t.Errorf("setting namespace twice should result in error")
}
if (&Request{}).Resource("bar").Resource("baz").err == nil {
t.Errorf("setting resource twice should result in error")
}
if (&Request{}).SubResource("bar").SubResource("baz").err == nil {
t.Errorf("setting subresource twice should result in error")
}
}
func TestInvalidSegments(t *testing.T) {
invalidSegments := []string{".", "..", "test/segment", "test%2bsegment"}
setters := map[string]func(string, *Request){
"namespace": func(s string, r *Request) { r.Namespace(s) },
"resource": func(s string, r *Request) { r.Resource(s) },
"name": func(s string, r *Request) { r.Name(s) },
"subresource": func(s string, r *Request) { r.SubResource(s) },
}
for _, invalidSegment := range invalidSegments {
for setterName, setter := range setters {
r := &Request{}
setter(invalidSegment, r)
if r.err == nil {
t.Errorf("%s: %s: expected error, got none", setterName, invalidSegment)
}
}
}
}
func TestRequestParam(t *testing.T) {
r := (&Request{}).Param("foo", "a")
if !reflect.DeepEqual(r.params, url.Values{"foo": []string{"a"}}) {
t.Errorf("should have set a param: %#v", r)
}
r.Param("bar", "1")
r.Param("bar", "2")
if !reflect.DeepEqual(r.params, url.Values{"foo": []string{"a"}, "bar": []string{"1", "2"}}) {
t.Errorf("should have set a param: %#v", r)
}
}
func TestRequestVersionedParams(t *testing.T) {
r := (&Request{content: ContentConfig{GroupVersion: &v1.SchemeGroupVersion}}).Param("foo", "a")
if !reflect.DeepEqual(r.params, url.Values{"foo": []string{"a"}}) {
t.Errorf("should have set a param: %#v", r)
}
r.VersionedParams(&api.PodLogOptions{Follow: true, Container: "bar"}, api.ParameterCodec)
if !reflect.DeepEqual(r.params, url.Values{
"foo": []string{"a"},
"container": []string{"bar"},
"follow": []string{"true"},
}) {
t.Errorf("should have set a param: %#v", r)
}
}
func TestRequestVersionedParamsFromListOptions(t *testing.T) {
r := &Request{content: ContentConfig{GroupVersion: &v1.SchemeGroupVersion}}
r.VersionedParams(&api.ListOptions{ResourceVersion: "1"}, api.ParameterCodec)
if !reflect.DeepEqual(r.params, url.Values{
"resourceVersion": []string{"1"},
}) {
t.Errorf("should have set a param: %#v", r)
}
var timeout int64 = 10
r.VersionedParams(&api.ListOptions{ResourceVersion: "2", TimeoutSeconds: &timeout}, api.ParameterCodec)
if !reflect.DeepEqual(r.params, url.Values{
"resourceVersion": []string{"1", "2"},
"timeoutSeconds": []string{"10"},
}) {
t.Errorf("should have set a param: %#v", r)
}
}
func TestRequestURI(t *testing.T) {
r := (&Request{}).Param("foo", "a")
r.Prefix("other")
r.RequestURI("/test?foo=b&a=b&c=1&c=2")
if r.pathPrefix != "/test" {
t.Errorf("path is wrong: %#v", r)
}
if !reflect.DeepEqual(r.params, url.Values{"a": []string{"b"}, "foo": []string{"b"}, "c": []string{"1", "2"}}) {
t.Errorf("should have set a param: %#v", r)
}
}
type NotAnAPIObject struct{}
func (obj NotAnAPIObject) GroupVersionKind() *unversioned.GroupVersionKind { return nil }
func (obj NotAnAPIObject) SetGroupVersionKind(gvk *unversioned.GroupVersionKind) {}
func defaultContentConfig() ContentConfig {
return ContentConfig{
GroupVersion: ®istered.GroupOrDie(api.GroupName).GroupVersion,
NegotiatedSerializer: testapi.Default.NegotiatedSerializer(),
}
}
func defaultSerializers() Serializers {
return Serializers{
Encoder: testapi.Default.Codec(),
Decoder: testapi.Default.Codec(),
StreamingSerializer: testapi.Default.Codec(),
Framer: runtime.DefaultFramer,
RenegotiatedDecoder: func(contentType string, params map[string]string) (runtime.Decoder, error) {
return testapi.Default.Codec(), nil
},
}
}
func TestRequestBody(t *testing.T) {
// test unknown type
r := (&Request{}).Body([]string{"test"})
if r.err == nil || r.body != nil {
t.Errorf("should have set err and left body nil: %#v", r)
}
// test error set when failing to read file
f, err := ioutil.TempFile("", "test")
if err != nil {
t.Fatalf("unable to create temp file")
}
defer f.Close()
os.Remove(f.Name())
r = (&Request{}).Body(f.Name())
if r.err == nil || r.body != nil {
t.Errorf("should have set err and left body nil: %#v", r)
}
// test unencodable api object
r = (&Request{content: defaultContentConfig()}).Body(&NotAnAPIObject{})
if r.err == nil || r.body != nil {
t.Errorf("should have set err and left body nil: %#v", r)
}
}
func TestResultIntoWithErrReturnsErr(t *testing.T) {
res := Result{err: errors.New("test")}
if err := res.Into(&api.Pod{}); err != res.err {
t.Errorf("should have returned exact error from result")
}
}
func TestURLTemplate(t *testing.T) {
uri, _ := url.Parse("http://localhost")
r := NewRequest(nil, "POST", uri, "", ContentConfig{GroupVersion: &unversioned.GroupVersion{Group: "test"}}, Serializers{}, nil, nil)
r.Prefix("pre1").Resource("r1").Namespace("ns").Name("nm").Param("p0", "v0")
full := r.URL()
if full.String() != "http://localhost/pre1/namespaces/ns/r1/nm?p0=v0" {
t.Errorf("unexpected initial URL: %s", full)
}
actualURL := r.finalURLTemplate()
actual := actualURL.String()
expected := "http://localhost/pre1/namespaces/%7Bnamespace%7D/r1/%7Bname%7D?p0=%7Bvalue%7D"
if actual != expected {
t.Errorf("unexpected URL template: %s %s", actual, expected)
}
if r.URL().String() != full.String() {
t.Errorf("creating URL template changed request: %s -> %s", full.String(), r.URL().String())
}
}
func TestTransformResponse(t *testing.T) {
invalid := []byte("aaaaa")
uri, _ := url.Parse("http://localhost")
testCases := []struct {
Response *http.Response
Data []byte
Created bool
Error bool
ErrFn func(err error) bool
}{
{Response: &http.Response{StatusCode: 200}, Data: []byte{}},
{Response: &http.Response{StatusCode: 201}, Data: []byte{}, Created: true},
{Response: &http.Response{StatusCode: 199}, Error: true},
{Response: &http.Response{StatusCode: 500}, Error: true},
{Response: &http.Response{StatusCode: 422}, Error: true},
{Response: &http.Response{StatusCode: 409}, Error: true},
{Response: &http.Response{StatusCode: 404}, Error: true},
{Response: &http.Response{StatusCode: 401}, Error: true},
{
Response: &http.Response{
StatusCode: 401,
Header: http.Header{"Content-Type": []string{"application/json"}},
Body: ioutil.NopCloser(bytes.NewReader(invalid)),
},
Error: true,
ErrFn: func(err error) bool {
return err.Error() != "aaaaa" && apierrors.IsUnauthorized(err)
},
},
{
Response: &http.Response{
StatusCode: 401,
Header: http.Header{"Content-Type": []string{"text/any"}},
Body: ioutil.NopCloser(bytes.NewReader(invalid)),
},
Error: true,
ErrFn: func(err error) bool {
return strings.Contains(err.Error(), "server has asked for the client to provide") && apierrors.IsUnauthorized(err)
},
},
{Response: &http.Response{StatusCode: 403}, Error: true},
{Response: &http.Response{StatusCode: 200, Body: ioutil.NopCloser(bytes.NewReader(invalid))}, Data: invalid},
{Response: &http.Response{StatusCode: 200, Body: ioutil.NopCloser(bytes.NewReader(invalid))}, Data: invalid},
}
for i, test := range testCases {
r := NewRequest(nil, "", uri, "", defaultContentConfig(), defaultSerializers(), nil, nil)
if test.Response.Body == nil {
test.Response.Body = ioutil.NopCloser(bytes.NewReader([]byte{}))
}
result := r.transformResponse(test.Response, &http.Request{})
response, created, err := result.body, result.statusCode == http.StatusCreated, result.err
hasErr := err != nil
if hasErr != test.Error {
t.Errorf("%d: unexpected error: %t %v", i, test.Error, err)
} else if hasErr && test.Response.StatusCode > 399 {
status, ok := err.(apierrors.APIStatus)
if !ok {
t.Errorf("%d: response should have been transformable into APIStatus: %v", i, err)
continue
}
if int(status.Status().Code) != test.Response.StatusCode {
t.Errorf("%d: status code did not match response: %#v", i, status.Status())
}
}
if test.ErrFn != nil && !test.ErrFn(err) {
t.Errorf("%d: error function did not match: %v", i, err)
}
if !(test.Data == nil && response == nil) && !api.Semantic.DeepDerivative(test.Data, response) {
t.Errorf("%d: unexpected response: %#v %#v", i, test.Data, response)
}
if test.Created != created {
t.Errorf("%d: expected created %t, got %t", i, test.Created, created)
}
}
}
type renegotiator struct {
called bool
contentType string
params map[string]string
decoder runtime.Decoder
err error
}
func (r *renegotiator) invoke(contentType string, params map[string]string) (runtime.Decoder, error) {
r.called = true
r.contentType = contentType
r.params = params
return r.decoder, r.err
}
func TestTransformResponseNegotiate(t *testing.T) {
invalid := []byte("aaaaa")
uri, _ := url.Parse("http://localhost")
testCases := []struct {
Response *http.Response
Data []byte
Created bool
Error bool
ErrFn func(err error) bool
ContentType string
Called bool
ExpectContentType string
Decoder runtime.Decoder
NegotiateErr error
}{
{
ContentType: "application/json",
Response: &http.Response{
StatusCode: 401,
Header: http.Header{"Content-Type": []string{"application/json"}},
Body: ioutil.NopCloser(bytes.NewReader(invalid)),
},
Error: true,
ErrFn: func(err error) bool {
return err.Error() != "aaaaa" && apierrors.IsUnauthorized(err)
},
},
{
ContentType: "application/json",
Response: &http.Response{
StatusCode: 401,
Header: http.Header{"Content-Type": []string{"application/protobuf"}},
Body: ioutil.NopCloser(bytes.NewReader(invalid)),
},
Decoder: testapi.Default.Codec(),
Called: true,
ExpectContentType: "application/protobuf",
Error: true,
ErrFn: func(err error) bool {
return err.Error() != "aaaaa" && apierrors.IsUnauthorized(err)
},
},
{
ContentType: "application/json",
Response: &http.Response{
StatusCode: 500,
Header: http.Header{"Content-Type": []string{"application/,others"}},
},
Decoder: testapi.Default.Codec(),
Error: true,
ErrFn: func(err error) bool {
return err.Error() == "Internal error occurred: mime: expected token after slash" && err.(apierrors.APIStatus).Status().Code == 500
},
},
{
// no negotiation when no content type specified
Response: &http.Response{
StatusCode: 200,
Header: http.Header{"Content-Type": []string{"text/any"}},
Body: ioutil.NopCloser(bytes.NewReader(invalid)),
},
Decoder: testapi.Default.Codec(),
},
{
// no negotiation when no response content type specified
ContentType: "text/any",
Response: &http.Response{
StatusCode: 200,
Body: ioutil.NopCloser(bytes.NewReader(invalid)),
},
Decoder: testapi.Default.Codec(),
},
{
// unrecognized content type is not handled
ContentType: "application/json",
Response: &http.Response{
StatusCode: 404,
Header: http.Header{"Content-Type": []string{"application/unrecognized"}},
Body: ioutil.NopCloser(bytes.NewReader(invalid)),
},
Decoder: testapi.Default.Codec(),
NegotiateErr: fmt.Errorf("aaaa"),
Called: true,
ExpectContentType: "application/unrecognized",
Error: true,
ErrFn: func(err error) bool {
return err.Error() != "aaaaa" && apierrors.IsNotFound(err)
},
},
}
for i, test := range testCases {
serializers := defaultSerializers()
negotiator := &renegotiator{
decoder: test.Decoder,
err: test.NegotiateErr,
}
serializers.RenegotiatedDecoder = negotiator.invoke
contentConfig := defaultContentConfig()
contentConfig.ContentType = test.ContentType
r := NewRequest(nil, "", uri, "", contentConfig, serializers, nil, nil)
if test.Response.Body == nil {
test.Response.Body = ioutil.NopCloser(bytes.NewReader([]byte{}))
}
result := r.transformResponse(test.Response, &http.Request{})
_, err := result.body, result.err
hasErr := err != nil
if hasErr != test.Error {
t.Errorf("%d: unexpected error: %t %v", i, test.Error, err)
continue
} else if hasErr && test.Response.StatusCode > 399 {
status, ok := err.(apierrors.APIStatus)
if !ok {
t.Errorf("%d: response should have been transformable into APIStatus: %v", i, err)
continue
}
if int(status.Status().Code) != test.Response.StatusCode {
t.Errorf("%d: status code did not match response: %#v", i, status.Status())
}
}
if test.ErrFn != nil && !test.ErrFn(err) {
t.Errorf("%d: error function did not match: %v", i, err)
}
if negotiator.called != test.Called {
t.Errorf("%d: negotiator called %t != %t", i, negotiator.called, test.Called)
}
if !test.Called {
continue
}
if negotiator.contentType != test.ExpectContentType {
t.Errorf("%d: unexpected content type: %s", i, negotiator.contentType)
}
}
}
func TestTransformUnstructuredError(t *testing.T) {
testCases := []struct {
Req *http.Request
Res *http.Response
Resource string
Name string
ErrFn func(error) bool
}{
{
Resource: "foo",
Name: "bar",
Req: &http.Request{
Method: "POST",
},
Res: &http.Response{
StatusCode: http.StatusConflict,
Body: ioutil.NopCloser(bytes.NewReader(nil)),
},
ErrFn: apierrors.IsAlreadyExists,
},
{
Resource: "foo",
Name: "bar",
Req: &http.Request{
Method: "PUT",
},
Res: &http.Response{
StatusCode: http.StatusConflict,
Body: ioutil.NopCloser(bytes.NewReader(nil)),
},
ErrFn: apierrors.IsConflict,
},
{
Resource: "foo",
Name: "bar",
Req: &http.Request{},
Res: &http.Response{
StatusCode: http.StatusNotFound,
Body: ioutil.NopCloser(bytes.NewReader(nil)),
},
ErrFn: apierrors.IsNotFound,
},
{
Req: &http.Request{},
Res: &http.Response{
StatusCode: http.StatusBadRequest,
Body: ioutil.NopCloser(bytes.NewReader(nil)),
},
ErrFn: apierrors.IsBadRequest,
},
}
for _, testCase := range testCases {
r := &Request{
content: defaultContentConfig(),
serializers: defaultSerializers(),
resourceName: testCase.Name,
resource: testCase.Resource,
}
result := r.transformResponse(testCase.Res, testCase.Req)
err := result.err
if !testCase.ErrFn(err) {
t.Errorf("unexpected error: %v", err)
continue
}
if len(testCase.Name) != 0 && !strings.Contains(err.Error(), testCase.Name) {
t.Errorf("unexpected error string: %s", err)
}
if len(testCase.Resource) != 0 && !strings.Contains(err.Error(), testCase.Resource) {
t.Errorf("unexpected error string: %s", err)
}
}
}
func TestRequestWatch(t *testing.T) {
testCases := []struct {
Request *Request
Err bool
ErrFn func(error) bool
Empty bool
}{
{
Request: &Request{err: errors.New("bail")},
Err: true,
},
{
Request: &Request{baseURL: &url.URL{}, pathPrefix: "%"},
Err: true,
},
{
Request: &Request{
client: clientFunc(func(req *http.Request) (*http.Response, error) {
return nil, errors.New("err")
}),
baseURL: &url.URL{},
},
Err: true,
},
{
Request: &Request{
content: defaultContentConfig(),
serializers: defaultSerializers(),
client: clientFunc(func(req *http.Request) (*http.Response, error) {
return &http.Response{
StatusCode: http.StatusForbidden,
Body: ioutil.NopCloser(bytes.NewReader([]byte{})),
}, nil
}),
baseURL: &url.URL{},
},
Err: true,
ErrFn: func(err error) bool {
return apierrors.IsForbidden(err)
},
},
{
Request: &Request{
content: defaultContentConfig(),
serializers: defaultSerializers(),
client: clientFunc(func(req *http.Request) (*http.Response, error) {
return &http.Response{
StatusCode: http.StatusUnauthorized,
Body: ioutil.NopCloser(bytes.NewReader([]byte{})),
}, nil
}),
baseURL: &url.URL{},
},
Err: true,
ErrFn: func(err error) bool {
return apierrors.IsUnauthorized(err)
},
},
{
Request: &Request{
content: defaultContentConfig(),
serializers: defaultSerializers(),
client: clientFunc(func(req *http.Request) (*http.Response, error) {
return &http.Response{
StatusCode: http.StatusUnauthorized,
Body: ioutil.NopCloser(bytes.NewReader([]byte(runtime.EncodeOrDie(testapi.Default.Codec(), &unversioned.Status{
Status: unversioned.StatusFailure,
Reason: unversioned.StatusReasonUnauthorized,
})))),
}, nil
}),
baseURL: &url.URL{},
},
Err: true,
ErrFn: func(err error) bool {
return apierrors.IsUnauthorized(err)
},
},
{
Request: &Request{
serializers: defaultSerializers(),
client: clientFunc(func(req *http.Request) (*http.Response, error) {
return nil, io.EOF
}),
baseURL: &url.URL{},
},
Empty: true,
},
{
Request: &Request{
serializers: defaultSerializers(),
client: clientFunc(func(req *http.Request) (*http.Response, error) {
return nil, &url.Error{Err: io.EOF}
}),
baseURL: &url.URL{},
},
Empty: true,
},
{
Request: &Request{
serializers: defaultSerializers(),
client: clientFunc(func(req *http.Request) (*http.Response, error) {
return nil, errors.New("http: can't write HTTP request on broken connection")
}),
baseURL: &url.URL{},
},
Empty: true,
},
{
Request: &Request{
serializers: defaultSerializers(),
client: clientFunc(func(req *http.Request) (*http.Response, error) {
return nil, errors.New("foo: connection reset by peer")
}),
baseURL: &url.URL{},
},
Empty: true,
},
}
for i, testCase := range testCases {
t.Logf("testcase %v", testCase.Request)
testCase.Request.backoffMgr = &NoBackoff{}
watch, err := testCase.Request.Watch()
hasErr := err != nil
if hasErr != testCase.Err {
t.Errorf("%d: expected %t, got %t: %v", i, testCase.Err, hasErr, err)
continue
}
if testCase.ErrFn != nil && !testCase.ErrFn(err) {
t.Errorf("%d: error not valid: %v", i, err)
}
if hasErr && watch != nil {
t.Errorf("%d: watch should be nil when error is returned", i)
continue
}
if testCase.Empty {
_, ok := <-watch.ResultChan()
if ok {
t.Errorf("%d: expected the watch to be empty: %#v", i, watch)
}
}
}
}
func TestRequestStream(t *testing.T) {
testCases := []struct {
Request *Request
Err bool
}{
{
Request: &Request{err: errors.New("bail")},
Err: true,
},
{
Request: &Request{baseURL: &url.URL{}, pathPrefix: "%"},
Err: true,
},
{
Request: &Request{
client: clientFunc(func(req *http.Request) (*http.Response, error) {
return nil, errors.New("err")
}),
baseURL: &url.URL{},
},
Err: true,
},
{
Request: &Request{
client: clientFunc(func(req *http.Request) (*http.Response, error) {
return &http.Response{
StatusCode: http.StatusUnauthorized,
Body: ioutil.NopCloser(bytes.NewReader([]byte(runtime.EncodeOrDie(testapi.Default.Codec(), &unversioned.Status{
Status: unversioned.StatusFailure,
Reason: unversioned.StatusReasonUnauthorized,
})))),
}, nil
}),
content: defaultContentConfig(),
serializers: defaultSerializers(),
baseURL: &url.URL{},
},
Err: true,
},
}
for i, testCase := range testCases {
testCase.Request.backoffMgr = &NoBackoff{}
body, err := testCase.Request.Stream()
hasErr := err != nil
if hasErr != testCase.Err {
t.Errorf("%d: expected %t, got %t: %v", i, testCase.Err, hasErr, err)
}
if hasErr && body != nil {
t.Errorf("%d: body should be nil when error is returned", i)
}
}
}
type fakeUpgradeConnection struct{}
func (c *fakeUpgradeConnection) CreateStream(headers http.Header) (httpstream.Stream, error) {
return nil, nil
}
func (c *fakeUpgradeConnection) Close() error {
return nil
}
func (c *fakeUpgradeConnection) CloseChan() <-chan bool {
return make(chan bool)
}
func (c *fakeUpgradeConnection) SetIdleTimeout(timeout time.Duration) {
}
type fakeUpgradeRoundTripper struct {
req *http.Request
conn httpstream.Connection
}
func (f *fakeUpgradeRoundTripper) RoundTrip(req *http.Request) (*http.Response, error) {
f.req = req
b := []byte{}
body := ioutil.NopCloser(bytes.NewReader(b))
resp := &http.Response{
StatusCode: 101,
Body: body,
}
return resp, nil
}
func (f *fakeUpgradeRoundTripper) NewConnection(resp *http.Response) (httpstream.Connection, error) {
return f.conn, nil
}
func TestRequestDo(t *testing.T) {
testCases := []struct {
Request *Request
Err bool
}{
{
Request: &Request{err: errors.New("bail")},
Err: true,
},
{
Request: &Request{baseURL: &url.URL{}, pathPrefix: "%"},
Err: true,
},
{
Request: &Request{
client: clientFunc(func(req *http.Request) (*http.Response, error) {
return nil, errors.New("err")
}),
baseURL: &url.URL{},
},
Err: true,
},
}
for i, testCase := range testCases {
testCase.Request.backoffMgr = &NoBackoff{}
body, err := testCase.Request.Do().Raw()
hasErr := err != nil
if hasErr != testCase.Err {
t.Errorf("%d: expected %t, got %t: %v", i, testCase.Err, hasErr, err)
}
if hasErr && body != nil {
t.Errorf("%d: body should be nil when error is returned", i)
}
}
}
func TestDoRequestNewWay(t *testing.T) {
reqBody := "request body"
expectedObj := &api.Service{Spec: api.ServiceSpec{Ports: []api.ServicePort{{
Protocol: "TCP",
Port: 12345,
TargetPort: intstr.FromInt(12345),
}}}}
expectedBody, _ := runtime.Encode(testapi.Default.Codec(), expectedObj)
fakeHandler := utiltesting.FakeHandler{
StatusCode: 200,
ResponseBody: string(expectedBody),
T: t,
}
testServer := httptest.NewServer(&fakeHandler)
defer testServer.Close()
c := testRESTClient(t, testServer)
obj, err := c.Verb("POST").
Prefix("foo", "bar").
Suffix("baz").
Timeout(time.Second).
Body([]byte(reqBody)).
Do().Get()
if err != nil {
t.Errorf("Unexpected error: %v %#v", err, err)
return
}
if obj == nil {
t.Error("nil obj")
} else if !api.Semantic.DeepDerivative(expectedObj, obj) {
t.Errorf("Expected: %#v, got %#v", expectedObj, obj)
}
requestURL := testapi.Default.ResourcePathWithPrefix("foo/bar", "", "", "baz")
requestURL += "?timeout=1s"
fakeHandler.ValidateRequest(t, requestURL, "POST", &reqBody)
}
// This test assumes that the client implementation backs off exponentially, for an individual request.
func TestBackoffLifecycle(t *testing.T) {
count := 0
testServer := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
count++
t.Logf("Attempt %d", count)
if count == 5 || count == 9 {
w.WriteHeader(http.StatusOK)
return
} else {
w.WriteHeader(http.StatusGatewayTimeout)
return
}
}))
defer testServer.Close()
c := testRESTClient(t, testServer)
// Test backoff recovery and increase. This correlates to the constants
// which are used in the server implementation returning StatusOK above.
seconds := []int{0, 1, 2, 4, 8, 0, 1, 2, 4, 0}
request := c.Verb("POST").Prefix("backofftest").Suffix("abc")
clock := clock.FakeClock{}
request.backoffMgr = &URLBackoff{
// Use a fake backoff here to avoid flakes and speed the test up.
Backoff: flowcontrol.NewFakeBackOff(
time.Duration(1)*time.Second,
time.Duration(200)*time.Second,
&clock,
)}
for _, sec := range seconds {
thisBackoff := request.backoffMgr.CalculateBackoff(request.URL())
t.Logf("Current backoff %v", thisBackoff)
if thisBackoff != time.Duration(sec)*time.Second {
t.Errorf("Backoff is %v instead of %v", thisBackoff, sec)
}
now := clock.Now()
request.DoRaw()
elapsed := clock.Since(now)
if clock.Since(now) != thisBackoff {
t.Errorf("CalculatedBackoff not honored by clock: Expected time of %v, but got %v ", thisBackoff, elapsed)
}
}
}