alertmanager/client/client_test.go
Julien Pivotto 013177e2d0
Update dependencies (#2257)
Update membership

Update common (support HTTP/2 client)

Signed-off-by: Julien Pivotto <roidelapluie@inuits.eu>
2020-05-18 15:00:36 +02:00

467 lines
10 KiB
Go

// Copyright 2018 The Prometheus 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 client
import (
"bytes"
"context"
"encoding/json"
"fmt"
"net/http"
"net/url"
"strings"
"testing"
"time"
"github.com/prometheus/alertmanager/config"
"github.com/prometheus/alertmanager/types"
)
type apiTest struct {
// Wrapper around the tested function.
do func() (interface{}, error)
apiRes fakeAPIResponse
// Expected values returned by the tested function.
res interface{}
err error
}
// Fake HTTP client for TestAPI.
type fakeAPIClient struct {
*testing.T
ch chan fakeAPIResponse
}
type fakeAPIResponse struct {
// Expected input values.
path string
method string
// Values to be returned by fakeAPIClient.Do().
err error
res interface{}
}
func (c *fakeAPIClient) URL(ep string, args map[string]string) *url.URL {
path := ep
for k, v := range args {
path = strings.Replace(path, ":"+k, v, -1)
}
return &url.URL{
Host: "test:9093",
Path: path,
}
}
func (c *fakeAPIClient) Do(ctx context.Context, req *http.Request) (*http.Response, []byte, error) {
test := <-c.ch
if req.URL.Path != test.path {
c.Errorf("unexpected request path: want %s, got %s", test.path, req.URL.Path)
}
if req.Method != test.method {
c.Errorf("unexpected request method: want %s, got %s", test.method, req.Method)
}
b, err := json.Marshal(test.res)
if err != nil {
c.Fatal(err)
}
return &http.Response{}, b, test.err
}
func TestAPI(t *testing.T) {
client := &fakeAPIClient{T: t, ch: make(chan fakeAPIResponse, 1)}
now := time.Now()
u, err := url.Parse("http://example.com")
if err != nil {
t.Errorf("unexpected error: %v", err)
}
statusData := &ServerStatus{
ConfigYAML: "{}",
ConfigJSON: &config.Config{
Global: &config.GlobalConfig{
PagerdutyURL: &config.URL{URL: u},
SMTPSmarthost: config.HostPort{Host: "localhost", Port: "25"},
},
},
VersionInfo: map[string]string{"version": "v1"},
Uptime: now,
ClusterStatus: &ClusterStatus{Peers: []PeerStatus{}},
}
doStatus := func() (interface{}, error) {
api := httpStatusAPI{client: client}
return api.Get(context.Background())
}
alertOne := Alert{
StartsAt: now,
EndsAt: now.Add(time.Duration(5 * time.Minute)),
Labels: LabelSet{"label1": "test1"},
Annotations: LabelSet{"annotation1": "some text"},
}
alerts := []*ExtendedAlert{
{
Alert: alertOne,
Fingerprint: "1c93eec3511dc156",
Status: types.AlertStatus{
State: types.AlertStateActive,
},
},
}
doAlertList := func() (interface{}, error) {
api := httpAlertAPI{client: client}
return api.List(context.Background(), "", "", false, false, false, false)
}
doAlertPush := func() (interface{}, error) {
api := httpAlertAPI{client: client}
return nil, api.Push(context.Background(), []Alert{alertOne}...)
}
silOne := &types.Silence{
ID: "abc",
Matchers: []*types.Matcher{
{
Name: "label1",
Value: "test1",
IsRegex: false,
},
},
StartsAt: now,
EndsAt: now.Add(time.Duration(2 * time.Hour)),
UpdatedAt: now,
CreatedBy: "alice",
Comment: "some comment",
Status: types.SilenceStatus{
State: "active",
},
}
doSilenceGet := func(id string) func() (interface{}, error) {
return func() (interface{}, error) {
api := httpSilenceAPI{client: client}
return api.Get(context.Background(), id)
}
}
doSilenceSet := func(sil types.Silence) func() (interface{}, error) {
return func() (interface{}, error) {
api := httpSilenceAPI{client: client}
return api.Set(context.Background(), sil)
}
}
doSilenceExpire := func(id string) func() (interface{}, error) {
return func() (interface{}, error) {
api := httpSilenceAPI{client: client}
return nil, api.Expire(context.Background(), id)
}
}
doSilenceList := func() (interface{}, error) {
api := httpSilenceAPI{client: client}
return api.List(context.Background(), "")
}
tests := []apiTest{
{
do: doStatus,
apiRes: fakeAPIResponse{
res: statusData,
path: "/api/v1/status",
method: http.MethodGet,
},
res: statusData,
},
{
do: doStatus,
apiRes: fakeAPIResponse{
err: fmt.Errorf("some error"),
path: "/api/v1/status",
method: http.MethodGet,
},
err: fmt.Errorf("some error"),
},
{
do: doAlertList,
apiRes: fakeAPIResponse{
res: alerts,
path: "/api/v1/alerts",
method: http.MethodGet,
},
res: alerts,
},
{
do: doAlertList,
apiRes: fakeAPIResponse{
err: fmt.Errorf("some error"),
path: "/api/v1/alerts",
method: http.MethodGet,
},
err: fmt.Errorf("some error"),
},
{
do: doAlertPush,
apiRes: fakeAPIResponse{
res: nil,
path: "/api/v1/alerts",
method: http.MethodPost,
},
res: nil,
},
{
do: doAlertPush,
apiRes: fakeAPIResponse{
err: fmt.Errorf("some error"),
path: "/api/v1/alerts",
method: http.MethodPost,
},
err: fmt.Errorf("some error"),
},
{
do: doSilenceGet("abc"),
apiRes: fakeAPIResponse{
res: silOne,
path: "/api/v1/silence/abc",
method: http.MethodGet,
},
res: silOne,
},
{
do: doSilenceGet("abc"),
apiRes: fakeAPIResponse{
err: fmt.Errorf("some error"),
path: "/api/v1/silence/abc",
method: http.MethodGet,
},
err: fmt.Errorf("some error"),
},
{
do: doSilenceSet(*silOne),
apiRes: fakeAPIResponse{
res: map[string]string{"SilenceId": "abc"},
path: "/api/v1/silences",
method: http.MethodPost,
},
res: "abc",
},
{
do: doSilenceSet(*silOne),
apiRes: fakeAPIResponse{
err: fmt.Errorf("some error"),
path: "/api/v1/silences",
method: http.MethodPost,
},
err: fmt.Errorf("some error"),
},
{
do: doSilenceExpire("abc"),
apiRes: fakeAPIResponse{
path: "/api/v1/silence/abc",
method: http.MethodDelete,
},
},
{
do: doSilenceExpire("abc"),
apiRes: fakeAPIResponse{
err: fmt.Errorf("some error"),
path: "/api/v1/silence/abc",
method: http.MethodDelete,
},
err: fmt.Errorf("some error"),
},
{
do: doSilenceList,
apiRes: fakeAPIResponse{
res: []*types.Silence{silOne},
path: "/api/v1/silences",
method: http.MethodGet,
},
res: []*types.Silence{silOne},
},
{
do: doSilenceList,
apiRes: fakeAPIResponse{
err: fmt.Errorf("some error"),
path: "/api/v1/silences",
method: http.MethodGet,
},
err: fmt.Errorf("some error"),
},
}
for _, test := range tests {
test := test
client.ch <- test.apiRes
t.Run(fmt.Sprintf("%s %s", test.apiRes.method, test.apiRes.path), func(t *testing.T) {
res, err := test.do()
if test.err != nil {
if err == nil {
t.Errorf("unexpected error: want: %s but got none", test.err)
return
}
if err.Error() != test.err.Error() {
t.Errorf("unexpected error: want: %s, got: %s", test.err, err)
}
return
}
if err != nil {
t.Errorf("unexpected error: %s", err)
return
}
want, err := json.Marshal(test.res)
if err != nil {
t.Fatal(err)
}
got, err := json.Marshal(res)
if err != nil {
t.Fatal(err)
}
if !bytes.Equal(want, got) {
t.Errorf("unexpected result: want: %s, got: %s", string(want), string(got))
}
})
}
}
// Fake HTTP client for TestAPIClientDo.
type fakeClient struct {
*testing.T
ch chan fakeResponse
}
type fakeResponse struct {
code int
res interface{}
err error
}
func (c fakeClient) URL(string, map[string]string) *url.URL {
return nil
}
func (c fakeClient) Do(context.Context, *http.Request) (*http.Response, []byte, error) {
fakeRes := <-c.ch
if fakeRes.err != nil {
return nil, nil, fakeRes.err
}
var b []byte
var err error
switch v := fakeRes.res.(type) {
case string:
b = []byte(v)
default:
b, err = json.Marshal(v)
if err != nil {
c.Fatal(err)
}
}
return &http.Response{StatusCode: fakeRes.code}, b, nil
}
type apiClientTest struct {
response fakeResponse
expected string
err error
}
func TestAPIClientDo(t *testing.T) {
tests := []apiClientTest{
{
response: fakeResponse{
code: http.StatusOK,
res: &apiResponse{
Status: statusSuccess,
Data: json.RawMessage(`"test"`),
},
err: nil,
},
expected: `"test"`,
err: nil,
},
{
response: fakeResponse{
code: http.StatusBadRequest,
res: &apiResponse{
Status: statusError,
Error: "some error",
},
err: nil,
},
err: fmt.Errorf("some error (code: 400)"),
},
{
response: fakeResponse{
code: http.StatusOK,
res: &apiResponse{
Status: statusError,
Error: "some error",
},
err: nil,
},
err: fmt.Errorf("inconsistent body for response code (code: 200)"),
},
{
response: fakeResponse{
code: http.StatusNotFound,
res: "not found",
err: nil,
},
err: fmt.Errorf("not found (code: 404)"),
},
{
response: fakeResponse{
err: fmt.Errorf("some error"),
},
err: fmt.Errorf("some error"),
},
}
fake := fakeClient{T: t, ch: make(chan fakeResponse, 1)}
client := apiClient{fake}
for _, test := range tests {
t.Run("", func(t *testing.T) {
fake.ch <- test.response
_, body, err := client.Do(context.Background(), &http.Request{})
if test.err != nil {
if err == nil {
t.Errorf("expected error %q but got none", test.err)
return
}
if test.err.Error() != err.Error() {
t.Errorf("unexpected error: want %q, got %q", test.err, err)
return
}
return
}
if err != nil {
t.Errorf("unexpected error %q", err)
return
}
want, got := test.expected, string(body)
if want != got {
t.Errorf("unexpected body: want %q, got %q", want, got)
}
})
}
}