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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 collector
import (
"regexp"
"testing"
"github.com/coreos/go-systemd/dbus"
"github.com/prometheus/client_golang/prometheus"
)
// Creates mock UnitLists
func getUnitListFixtures() [][]unit {
fixture1 := []unit{
{
UnitStatus: dbus.UnitStatus{
Name: "foo",
Description: "foo desc",
LoadState: "loaded",
ActiveState: "active",
SubState: "running",
Followed: "",
Path: "/org/freedesktop/systemd1/unit/foo",
JobId: 0,
JobType: "",
JobPath: "/",
},
},
{
UnitStatus: dbus.UnitStatus{
Name: "bar",
Description: "bar desc",
LoadState: "not-found",
ActiveState: "inactive",
SubState: "dead",
Followed: "",
Path: "/org/freedesktop/systemd1/unit/bar",
JobId: 0,
JobType: "",
JobPath: "/",
},
},
{
UnitStatus: dbus.UnitStatus{
Name: "foobar",
Description: "bar desc",
LoadState: "not-found",
ActiveState: "inactive",
SubState: "dead",
Followed: "",
Path: "/org/freedesktop/systemd1/unit/bar",
JobId: 0,
JobType: "",
JobPath: "/",
},
},
{
UnitStatus: dbus.UnitStatus{
Name: "baz",
Description: "bar desc",
LoadState: "not-found",
ActiveState: "inactive",
SubState: "dead",
Followed: "",
Path: "/org/freedesktop/systemd1/unit/bar",
JobId: 0,
JobType: "",
JobPath: "/",
},
},
}
fixture2 := []unit{}
return [][]unit{fixture1, fixture2}
}
func TestSystemdCollectorDoesntCrash(t *testing.T) {
c, err := NewSystemdCollector()
if err != nil {
t.Fatal(err)
}
sink := make(chan prometheus.Metric)
go func() {
for {
<-sink
}
}()
fixtures := getUnitListFixtures()
collector := (c).(*systemdCollector)
for _, units := range fixtures {
collector.collectUnitStatusMetrics(sink, units)
collector.collectSockets(sink, units)
}
}
func TestSystemdIgnoreFilter(t *testing.T) {
fixtures := getUnitListFixtures()
whitelistPattern := regexp.MustCompile("^foo$")
blacklistPattern := regexp.MustCompile("^bar$")
filtered := filterUnits(fixtures[0], whitelistPattern, blacklistPattern)
for _, unit := range filtered {
if blacklistPattern.MatchString(unit.Name) || !whitelistPattern.MatchString(unit.Name) {
t.Error(unit.Name, "should not be in the filtered list")
}
}
}
func TestSystemdIgnoreFilterDefaultKeepsAll(t *testing.T) {
c, err := NewSystemdCollector()
if err != nil {
t.Fatal(err)
}
fixtures := getUnitListFixtures()
collector := c.(*systemdCollector)
filtered := filterUnits(fixtures[0], collector.unitWhitelistPattern, collector.unitBlacklistPattern)
// Adjust fixtures by 3 "not-found" units.
if len(filtered) != len(fixtures[0])-3 {
t.Error("Default filters removed units")
}
}
func TestSystemdSummary(t *testing.T) {
fixtures := getUnitListFixtures()
summary := summarizeUnits(fixtures[0])
for _, state := range unitStatesName {
if state == "inactive" {
testSummaryHelper(t, state, summary[state], 3.0)
} else if state == "active" {
testSummaryHelper(t, state, summary[state], 1.0)
} else {
testSummaryHelper(t, state, summary[state], 0.0)
}
}
}
func testSummaryHelper(t *testing.T, state string, actual float64, expected float64) {
if actual != expected {
t.Errorf("Summary mode didn't count %s jobs correctly. Actual: %f, expected: %f", state, actual, expected)
}
}
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