diff options
Diffstat (limited to 'vendor/github.com/prometheus/client_golang/prometheus/push/push_test.go')
| -rw-r--r-- | vendor/github.com/prometheus/client_golang/prometheus/push/push_test.go | 176 |
1 files changed, 176 insertions, 0 deletions
diff --git a/vendor/github.com/prometheus/client_golang/prometheus/push/push_test.go b/vendor/github.com/prometheus/client_golang/prometheus/push/push_test.go new file mode 100644 index 000000000..28ed9b74b --- /dev/null +++ b/vendor/github.com/prometheus/client_golang/prometheus/push/push_test.go @@ -0,0 +1,176 @@ +// Copyright 2016 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. + +// Copyright (c) 2013, The Prometheus Authors +// All rights reserved. +// +// Use of this source code is governed by a BSD-style license that can be found +// in the LICENSE file. + +package push + +import ( + "bytes" + "io/ioutil" + "net/http" + "net/http/httptest" + "os" + "testing" + + "github.com/prometheus/common/expfmt" + + "github.com/prometheus/client_golang/prometheus" +) + +func TestPush(t *testing.T) { + + var ( + lastMethod string + lastBody []byte + lastPath string + ) + + host, err := os.Hostname() + if err != nil { + t.Error(err) + } + + // Fake a Pushgateway that always responds with 202. + pgwOK := httptest.NewServer( + http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) { + lastMethod = r.Method + var err error + lastBody, err = ioutil.ReadAll(r.Body) + if err != nil { + t.Fatal(err) + } + lastPath = r.URL.EscapedPath() + w.Header().Set("Content-Type", `text/plain; charset=utf-8`) + w.WriteHeader(http.StatusAccepted) + }), + ) + defer pgwOK.Close() + + // Fake a Pushgateway that always responds with 500. + pgwErr := httptest.NewServer( + http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) { + http.Error(w, "fake error", http.StatusInternalServerError) + }), + ) + defer pgwErr.Close() + + metric1 := prometheus.NewCounter(prometheus.CounterOpts{ + Name: "testname1", + Help: "testhelp1", + }) + metric2 := prometheus.NewGauge(prometheus.GaugeOpts{ + Name: "testname2", + Help: "testhelp2", + ConstLabels: prometheus.Labels{"foo": "bar", "dings": "bums"}, + }) + + reg := prometheus.NewRegistry() + reg.MustRegister(metric1) + reg.MustRegister(metric2) + + mfs, err := reg.Gather() + if err != nil { + t.Fatal(err) + } + + buf := &bytes.Buffer{} + enc := expfmt.NewEncoder(buf, expfmt.FmtProtoDelim) + + for _, mf := range mfs { + if err := enc.Encode(mf); err != nil { + t.Fatal(err) + } + } + wantBody := buf.Bytes() + + // PushCollectors, all good. + if err := Collectors("testjob", HostnameGroupingKey(), pgwOK.URL, metric1, metric2); err != nil { + t.Fatal(err) + } + if lastMethod != "PUT" { + t.Error("want method PUT for PushCollectors, got", lastMethod) + } + if bytes.Compare(lastBody, wantBody) != 0 { + t.Errorf("got body %v, want %v", lastBody, wantBody) + } + if lastPath != "/metrics/job/testjob/instance/"+host { + t.Error("unexpected path:", lastPath) + } + + // PushAddCollectors, with nil grouping, all good. + if err := AddCollectors("testjob", nil, pgwOK.URL, metric1, metric2); err != nil { + t.Fatal(err) + } + if lastMethod != "POST" { + t.Error("want method POST for PushAddCollectors, got", lastMethod) + } + if bytes.Compare(lastBody, wantBody) != 0 { + t.Errorf("got body %v, want %v", lastBody, wantBody) + } + if lastPath != "/metrics/job/testjob" { + t.Error("unexpected path:", lastPath) + } + + // PushCollectors with a broken PGW. + if err := Collectors("testjob", nil, pgwErr.URL, metric1, metric2); err == nil { + t.Error("push to broken Pushgateway succeeded") + } else { + if got, want := err.Error(), "unexpected status code 500 while pushing to "+pgwErr.URL+"/metrics/job/testjob: fake error\n"; got != want { + t.Errorf("got error %q, want %q", got, want) + } + } + + // PushCollectors with invalid grouping or job. + if err := Collectors("testjob", map[string]string{"foo": "bums"}, pgwErr.URL, metric1, metric2); err == nil { + t.Error("push with grouping contained in metrics succeeded") + } + if err := Collectors("test/job", nil, pgwErr.URL, metric1, metric2); err == nil { + t.Error("push with invalid job value succeeded") + } + if err := Collectors("testjob", map[string]string{"foo/bar": "bums"}, pgwErr.URL, metric1, metric2); err == nil { + t.Error("push with invalid grouping succeeded") + } + if err := Collectors("testjob", map[string]string{"foo-bar": "bums"}, pgwErr.URL, metric1, metric2); err == nil { + t.Error("push with invalid grouping succeeded") + } + + // Push registry, all good. + if err := FromGatherer("testjob", HostnameGroupingKey(), pgwOK.URL, reg); err != nil { + t.Fatal(err) + } + if lastMethod != "PUT" { + t.Error("want method PUT for Push, got", lastMethod) + } + if bytes.Compare(lastBody, wantBody) != 0 { + t.Errorf("got body %v, want %v", lastBody, wantBody) + } + + // PushAdd registry, all good. + if err := AddFromGatherer("testjob", map[string]string{"a": "x", "b": "y"}, pgwOK.URL, reg); err != nil { + t.Fatal(err) + } + if lastMethod != "POST" { + t.Error("want method POSTT for PushAdd, got", lastMethod) + } + if bytes.Compare(lastBody, wantBody) != 0 { + t.Errorf("got body %v, want %v", lastBody, wantBody) + } + if lastPath != "/metrics/job/testjob/a/x/b/y" && lastPath != "/metrics/job/testjob/b/y/a/x" { + t.Error("unexpected path:", lastPath) + } +} |