458 lines
9.8 KiB
Go
458 lines
9.8 KiB
Go
// Copyright 2018 The Prometheus Authors
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package client
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import (
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"bytes"
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"context"
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"encoding/json"
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"fmt"
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"net/http"
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"net/url"
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"strings"
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"testing"
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"time"
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"github.com/prometheus/alertmanager/config"
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"github.com/prometheus/alertmanager/types"
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)
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type apiTest struct {
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// Wrapper around the tested function.
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do func() (interface{}, error)
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apiRes fakeAPIResponse
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// Expected values returned by the tested function.
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res interface{}
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err error
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}
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// Fake HTTP client for TestAPI.
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type fakeAPIClient struct {
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*testing.T
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ch chan fakeAPIResponse
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}
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type fakeAPIResponse struct {
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// Expected input values.
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path string
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method string
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// Values to be returned by fakeAPIClient.Do().
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err error
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res interface{}
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}
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func (c *fakeAPIClient) URL(ep string, args map[string]string) *url.URL {
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path := ep
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for k, v := range args {
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path = strings.Replace(path, ":"+k, v, -1)
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}
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return &url.URL{
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Host: "test:9093",
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Path: path,
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}
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}
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func (c *fakeAPIClient) Do(ctx context.Context, req *http.Request) (*http.Response, []byte, error) {
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test := <-c.ch
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if req.URL.Path != test.path {
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c.Errorf("unexpected request path: want %s, got %s", test.path, req.URL.Path)
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}
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if req.Method != test.method {
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c.Errorf("unexpected request method: want %s, got %s", test.method, req.Method)
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}
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b, err := json.Marshal(test.res)
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if err != nil {
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c.Fatal(err)
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}
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return &http.Response{}, b, test.err
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}
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func TestAPI(t *testing.T) {
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client := &fakeAPIClient{T: t, ch: make(chan fakeAPIResponse, 1)}
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now := time.Now()
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statusData := &ServerStatus{
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ConfigYAML: "{}",
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ConfigJSON: &config.Config{},
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VersionInfo: map[string]string{"version": "v1"},
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Uptime: now,
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ClusterStatus: &ClusterStatus{Peers: []PeerStatus{}},
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}
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doStatus := func() (interface{}, error) {
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api := httpStatusAPI{client: client}
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return api.Get(context.Background())
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}
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alertOne := Alert{
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StartsAt: now,
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EndsAt: now.Add(time.Duration(5 * time.Minute)),
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Labels: LabelSet{"label1": "test1"},
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Annotations: LabelSet{"annotation1": "some text"},
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}
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alerts := []*ExtendedAlert{
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{
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Alert: alertOne,
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Fingerprint: "1c93eec3511dc156",
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Status: types.AlertStatus{
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State: types.AlertStateActive,
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},
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},
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}
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doAlertList := func() (interface{}, error) {
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api := httpAlertAPI{client: client}
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return api.List(context.Background(), "", "", false, false, false, false)
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}
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doAlertPush := func() (interface{}, error) {
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api := httpAlertAPI{client: client}
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return nil, api.Push(context.Background(), []Alert{alertOne}...)
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}
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silOne := &types.Silence{
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ID: "abc",
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Matchers: []*types.Matcher{
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{
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Name: "label1",
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Value: "test1",
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IsRegex: false,
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},
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},
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StartsAt: now,
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EndsAt: now.Add(time.Duration(2 * time.Hour)),
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UpdatedAt: now,
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CreatedBy: "alice",
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Comment: "some comment",
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Status: types.SilenceStatus{
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State: "active",
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},
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}
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doSilenceGet := func(id string) func() (interface{}, error) {
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return func() (interface{}, error) {
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api := httpSilenceAPI{client: client}
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return api.Get(context.Background(), id)
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}
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}
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doSilenceSet := func(sil types.Silence) func() (interface{}, error) {
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return func() (interface{}, error) {
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api := httpSilenceAPI{client: client}
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return api.Set(context.Background(), sil)
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}
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}
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doSilenceExpire := func(id string) func() (interface{}, error) {
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return func() (interface{}, error) {
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api := httpSilenceAPI{client: client}
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return nil, api.Expire(context.Background(), id)
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}
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}
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doSilenceList := func() (interface{}, error) {
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api := httpSilenceAPI{client: client}
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return api.List(context.Background(), "")
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}
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tests := []apiTest{
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{
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do: doStatus,
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apiRes: fakeAPIResponse{
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res: statusData,
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path: "/api/v1/status",
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method: http.MethodGet,
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},
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res: statusData,
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},
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{
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do: doStatus,
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apiRes: fakeAPIResponse{
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err: fmt.Errorf("some error"),
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path: "/api/v1/status",
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method: http.MethodGet,
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},
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err: fmt.Errorf("some error"),
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},
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{
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do: doAlertList,
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apiRes: fakeAPIResponse{
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res: alerts,
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path: "/api/v1/alerts",
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method: http.MethodGet,
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},
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res: alerts,
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},
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{
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do: doAlertList,
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apiRes: fakeAPIResponse{
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err: fmt.Errorf("some error"),
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path: "/api/v1/alerts",
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method: http.MethodGet,
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},
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err: fmt.Errorf("some error"),
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},
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{
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do: doAlertPush,
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apiRes: fakeAPIResponse{
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res: nil,
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path: "/api/v1/alerts",
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method: http.MethodPost,
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},
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res: nil,
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},
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{
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do: doAlertPush,
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apiRes: fakeAPIResponse{
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err: fmt.Errorf("some error"),
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path: "/api/v1/alerts",
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method: http.MethodPost,
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},
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err: fmt.Errorf("some error"),
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},
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{
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do: doSilenceGet("abc"),
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apiRes: fakeAPIResponse{
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res: silOne,
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path: "/api/v1/silence/abc",
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method: http.MethodGet,
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},
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res: silOne,
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},
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{
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do: doSilenceGet("abc"),
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apiRes: fakeAPIResponse{
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err: fmt.Errorf("some error"),
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path: "/api/v1/silence/abc",
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method: http.MethodGet,
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},
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err: fmt.Errorf("some error"),
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},
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{
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do: doSilenceSet(*silOne),
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apiRes: fakeAPIResponse{
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res: map[string]string{"SilenceId": "abc"},
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path: "/api/v1/silences",
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method: http.MethodPost,
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},
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res: "abc",
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},
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{
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do: doSilenceSet(*silOne),
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apiRes: fakeAPIResponse{
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err: fmt.Errorf("some error"),
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path: "/api/v1/silences",
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method: http.MethodPost,
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},
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err: fmt.Errorf("some error"),
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},
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{
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do: doSilenceExpire("abc"),
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apiRes: fakeAPIResponse{
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path: "/api/v1/silence/abc",
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method: http.MethodDelete,
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},
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},
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{
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do: doSilenceExpire("abc"),
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apiRes: fakeAPIResponse{
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err: fmt.Errorf("some error"),
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path: "/api/v1/silence/abc",
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method: http.MethodDelete,
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},
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err: fmt.Errorf("some error"),
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},
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{
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do: doSilenceList,
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apiRes: fakeAPIResponse{
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res: []*types.Silence{silOne},
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path: "/api/v1/silences",
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method: http.MethodGet,
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},
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res: []*types.Silence{silOne},
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},
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{
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do: doSilenceList,
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apiRes: fakeAPIResponse{
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err: fmt.Errorf("some error"),
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path: "/api/v1/silences",
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method: http.MethodGet,
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},
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err: fmt.Errorf("some error"),
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},
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}
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for _, test := range tests {
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test := test
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client.ch <- test.apiRes
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t.Run(fmt.Sprintf("%s %s", test.apiRes.method, test.apiRes.path), func(t *testing.T) {
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res, err := test.do()
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if test.err != nil {
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if err == nil {
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t.Errorf("unexpected error: want: %s but got none", test.err)
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return
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}
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if err.Error() != test.err.Error() {
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t.Errorf("unexpected error: want: %s, got: %s", test.err, err)
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}
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return
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}
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if err != nil {
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t.Errorf("unexpected error: %s", err)
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return
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}
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want, err := json.Marshal(test.res)
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if err != nil {
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t.Fatal(err)
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}
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got, err := json.Marshal(res)
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if err != nil {
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t.Fatal(err)
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}
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if bytes.Compare(want, got) != 0 {
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t.Errorf("unexpected result: want: %s, got: %s", string(want), string(got))
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}
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})
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}
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}
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// Fake HTTP client for TestAPIClientDo.
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type fakeClient struct {
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*testing.T
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ch chan fakeResponse
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}
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type fakeResponse struct {
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code int
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res interface{}
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err error
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}
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func (c fakeClient) URL(string, map[string]string) *url.URL {
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return nil
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}
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func (c fakeClient) Do(context.Context, *http.Request) (*http.Response, []byte, error) {
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fakeRes := <-c.ch
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if fakeRes.err != nil {
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return nil, nil, fakeRes.err
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}
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var b []byte
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var err error
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switch v := fakeRes.res.(type) {
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case string:
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b = []byte(v)
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default:
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b, err = json.Marshal(v)
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if err != nil {
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c.Fatal(err)
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}
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}
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return &http.Response{StatusCode: fakeRes.code}, b, nil
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}
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type apiClientTest struct {
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response fakeResponse
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expected string
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err error
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}
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func TestAPIClientDo(t *testing.T) {
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tests := []apiClientTest{
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{
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response: fakeResponse{
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code: http.StatusOK,
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res: &apiResponse{
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Status: statusSuccess,
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Data: json.RawMessage(`"test"`),
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},
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err: nil,
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},
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expected: `"test"`,
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err: nil,
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},
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{
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response: fakeResponse{
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code: http.StatusBadRequest,
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res: &apiResponse{
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Status: statusError,
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Error: "some error",
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},
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err: nil,
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},
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err: fmt.Errorf("some error (code: 400)"),
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},
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{
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response: fakeResponse{
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code: http.StatusOK,
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res: &apiResponse{
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Status: statusError,
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Error: "some error",
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},
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err: nil,
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},
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err: fmt.Errorf("inconsistent body for response code (code: 200)"),
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},
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{
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response: fakeResponse{
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code: http.StatusNotFound,
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res: "not found",
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err: nil,
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},
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err: fmt.Errorf("not found (code: 404)"),
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},
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{
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response: fakeResponse{
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err: fmt.Errorf("some error"),
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},
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err: fmt.Errorf("some error"),
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},
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}
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fake := fakeClient{T: t, ch: make(chan fakeResponse, 1)}
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client := apiClient{fake}
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for _, test := range tests {
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t.Run("", func(t *testing.T) {
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fake.ch <- test.response
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_, body, err := client.Do(context.Background(), &http.Request{})
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if test.err != nil {
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if err == nil {
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t.Errorf("expected error %q but got none", test.err)
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return
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}
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if test.err.Error() != err.Error() {
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t.Errorf("unexpected error: want %q, got %q", test.err, err)
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return
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}
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return
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}
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if err != nil {
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t.Errorf("unexpected error %q", err)
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return
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}
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want, got := test.expected, string(body)
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if want != got {
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t.Errorf("unexpected body: want %q, got %q", want, got)
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}
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})
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}
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}
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