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http_test.go
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http_test.go
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// Copyright 2015 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 main
import (
"fmt"
"net/http"
"net/http/httptest"
"strings"
"testing"
)
func TestHTTPStatusCodes(t *testing.T) {
tests := []struct {
StatusCode int
ValidStatusCodes []int
ShouldSucceed bool
}{
{200, []int{}, true},
{201, []int{}, true},
{299, []int{}, true},
{300, []int{}, false},
{404, []int{}, false},
{404, []int{200, 404}, true},
{200, []int{200, 404}, true},
{201, []int{200, 404}, false},
{404, []int{404}, true},
{200, []int{404}, false},
}
for i, test := range tests {
ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
w.WriteHeader(test.StatusCode)
}))
defer ts.Close()
metrics := NewMetricSink()
defer close(metrics)
result := probeHTTP(ts.URL,
Module{HTTP: HTTPProbe{ValidStatusCodes: test.ValidStatusCodes}}, metrics)
if result != test.ShouldSucceed {
t.Fatalf("Test %d (status code %d) expected result %t, got %t", i, test.StatusCode, test.ShouldSucceed, result)
}
}
}
func TestConfiguredPathSentInRequest(t *testing.T) {
var pathToSend = "/path/to/send?query=string"
var pathFound string
ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
pathFound = r.URL.Path
}))
defer ts.Close()
metrics := NewMetricSink()
defer close(metrics)
result := probeHTTP(ts.URL, Module{HTTP: HTTPProbe{Path: pathToSend}}, metrics)
if !result {
t.Error()
}
// The path parameter received by the server should be the first part of the path+query string.
if strings.Index(pathToSend, pathFound) != 0 {
t.Fatalf("Path received was %s, expected %s", pathFound, pathToSend)
}
}
func TestRedirectFollowed(t *testing.T) {
ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
if r.URL.Path == "/" {
http.Redirect(w, r, "/noredirect", http.StatusFound)
}
}))
defer ts.Close()
// Follow redirect, should succeed with 200.
metrics := make(chan Metric)
defer close(metrics)
go func() {
var redirectMetricFound = false
for m := range metrics {
if m.Name == "probe_http_redirects" {
if m.FloatValue != 1.0 {
t.Fatalf("Unexpected number of redirects found: %f", m.FloatValue)
}
}
}
if !redirectMetricFound {
t.Fatalf("Redirect count metric not found.")
}
}()
result := probeHTTP(ts.URL, Module{HTTP: HTTPProbe{}}, metrics)
if !result {
t.Fail()
}
}
func TestRedirectNotFollowed(t *testing.T) {
ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
http.Redirect(w, r, "/noredirect", http.StatusFound)
}))
defer ts.Close()
// Follow redirect, should succeed with 200.
metrics := NewMetricSink()
defer close(metrics)
result := probeHTTP(ts.URL,
Module{HTTP: HTTPProbe{NoFollowRedirects: true, ValidStatusCodes: []int{302}}}, metrics)
if !result {
t.Fail()
}
}
func TestPost(t *testing.T) {
ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
if r.Method != "POST" {
w.WriteHeader(http.StatusBadRequest)
}
}))
defer ts.Close()
metrics := NewMetricSink()
defer close(metrics)
result := probeHTTP(ts.URL,
Module{HTTP: HTTPProbe{Method: "POST"}}, metrics)
if !result {
t.Fail()
}
}
func TestFailIfNotSSL(t *testing.T) {
ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {}))
defer ts.Close()
metrics := make(chan Metric)
defer close(metrics)
go func() {
for m := range metrics {
if m.Name == "probe_http_ssl" && m.FloatValue > 0 {
t.Fatalf("Did not expect ssl metric set on non-ssl connection")
}
}
}()
result := probeHTTP(ts.URL,
Module{HTTP: HTTPProbe{FailIfNotSSL: true}}, metrics)
if result {
t.Fail()
}
}
func TestFailIfMatchesRegexpShouldFailOnMatch(t *testing.T) {
ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
fmt.Fprintf(w, "A string in the body of the http response.")
}))
defer ts.Close()
metrics := NewMetricSink()
defer close(metrics)
result := probeHTTP(ts.URL,
Module{HTTP: HTTPProbe{FailIfMatchesRegexp: []string{"string in the body"}}}, metrics)
if result {
t.Fail()
}
}
func TestFailIfMatchesRegexpShouldNotFailOnNoMatch(t *testing.T) {
ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
fmt.Fprintf(w, "A string in the body of the http response.")
}))
defer ts.Close()
metrics := NewMetricSink()
defer close(metrics)
result := probeHTTP(ts.URL,
Module{HTTP: HTTPProbe{FailIfMatchesRegexp: []string{"string NOT in the body"}}}, metrics)
if !result {
t.Fail()
}
}
func TestFailIfMatchesRegexpShouldFailOnAnyMatch(t *testing.T) {
// With multiple regexps configured, verify that any matching regexp causes
// the probe to fail, but probes succeed when no regexp matches.
ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
fmt.Fprintf(w, "A string in the body of the http response.")
}))
defer ts.Close()
metrics := NewMetricSink()
defer close(metrics)
result := probeHTTP(ts.URL,
Module{HTTP: HTTPProbe{FailIfMatchesRegexp: []string{"string NOT in the body", "string in the body"}}}, metrics)
if result {
t.Fail()
}
}
func TestFailIfMatchesRegexpShouldNotFailOnNoMatches(t *testing.T) {
ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
fmt.Fprintf(w, "A string in the body of the http response.")
}))
defer ts.Close()
metrics := NewMetricSink()
defer close(metrics)
result := probeHTTP(ts.URL,
Module{HTTP: HTTPProbe{FailIfMatchesRegexp: []string{"string NOT in the body", "string also NOT in the body"}}}, metrics)
if !result {
t.Fail()
}
}
func TestFailIfNotMatchesRegexpShouldFailOnNoMatch(t *testing.T) {
ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
fmt.Fprintf(w, "A string in the body of the http response.")
}))
defer ts.Close()
metrics := NewMetricSink()
defer close(metrics)
result := probeHTTP(ts.URL,
Module{HTTP: HTTPProbe{FailIfNotMatchesRegexp: []string{"string NOT in the body"}}}, metrics)
if result {
t.Fail()
}
}
func TestFailIfNotMatchesRegexpShouldNotFailOnMatch(t *testing.T) {
ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
fmt.Fprintf(w, "A string in the body of the http response.")
}))
defer ts.Close()
metrics := NewMetricSink()
defer close(metrics)
result := probeHTTP(ts.URL,
Module{HTTP: HTTPProbe{FailIfNotMatchesRegexp: []string{"string in the body"}}}, metrics)
if !result {
t.Fail()
}
}
func TestFailIfNotMatchesRegexpShouldFailOnAnyNonMatches(t *testing.T) {
// With multiple regexps configured, verify that any non-matching regexp
// causes the probe to fail, but probes succeed when all regexps match.
ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
fmt.Fprintf(w, "A string in the body of the http response.")
}))
defer ts.Close()
metrics := NewMetricSink()
defer close(metrics)
result := probeHTTP(ts.URL,
Module{HTTP: HTTPProbe{FailIfNotMatchesRegexp: []string{"string in the body", "string NOT in the body"}}}, metrics)
if result {
t.Fail()
}
}
func TestFailIfNotMatchesRegexpShouldNotFailOnAllMatches(t *testing.T) {
ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
fmt.Fprintf(w, "A string in the body of the http response.")
}))
defer ts.Close()
metrics := NewMetricSink()
defer close(metrics)
result := probeHTTP(ts.URL,
Module{HTTP: HTTPProbe{FailIfNotMatchesRegexp: []string{"string in the", "body of the"}}}, metrics)
if !result {
t.Fail()
}
}