The Prometheus monitoring system and time series database.
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// 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 main
import (
"fmt"
"net/http"
"net/http/httptest"
"testing"
"time"
)
func TestQueryRange(t *testing.T) {
s, getRequest := mockServer(200, `{"status": "success", "data": {"resultType": "matrix", "result": []}}`)
defer s.Close()
p := &promqlPrinter{}
exitCode := QueryRange(s.URL, map[string]string{}, "up", "0", "300", 0, p)
expectedPath := "/api/v1/query_range"
gotPath := getRequest().URL.Path
if gotPath != expectedPath {
t.Errorf("unexpected URL path %s (wanted %s)", gotPath, expectedPath)
}
form := getRequest().Form
actual := form.Get("query")
if actual != "up" {
t.Errorf("unexpected value %s for query", actual)
}
actual = form.Get("step")
if actual != "1" {
t.Errorf("unexpected value %s for step", actual)
}
if exitCode > 0 {
t.Error()
}
exitCode = QueryRange(s.URL, map[string]string{}, "up", "0", "300", 10*time.Millisecond, p)
gotPath = getRequest().URL.Path
if gotPath != expectedPath {
t.Errorf("unexpected URL path %s (wanted %s)", gotPath, expectedPath)
}
form = getRequest().Form
actual = form.Get("query")
if actual != "up" {
t.Errorf("unexpected value %s for query", actual)
}
actual = form.Get("step")
if actual != "0.01" {
t.Errorf("unexpected value %s for step", actual)
}
if exitCode > 0 {
t.Error()
}
}
func mockServer(code int, body string) (*httptest.Server, func() *http.Request) {
var req *http.Request
server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
r.ParseForm()
req = r
w.WriteHeader(code)
fmt.Fprintln(w, body)
}))
f := func() *http.Request {
return req
}
return server, f
}