/usr/share/gocode/src/github.com/hashicorp/serf/serf/coalesce_member_test.go is in golang-github-hashicorp-serf-dev 0.7.0~ds1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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import (
"reflect"
"sort"
"testing"
"time"
)
func TestMemberEventCoalesce_Basic(t *testing.T) {
outCh := make(chan Event, 64)
shutdownCh := make(chan struct{})
defer close(shutdownCh)
c := &memberEventCoalescer{
lastEvents: make(map[string]EventType),
latestEvents: make(map[string]coalesceEvent),
}
inCh := coalescedEventCh(outCh, shutdownCh,
5*time.Millisecond, 5*time.Millisecond, c)
send := []Event{
MemberEvent{
Type: EventMemberJoin,
Members: []Member{Member{Name: "foo"}},
},
MemberEvent{
Type: EventMemberLeave,
Members: []Member{Member{Name: "foo"}},
},
MemberEvent{
Type: EventMemberLeave,
Members: []Member{Member{Name: "bar"}},
},
MemberEvent{
Type: EventMemberUpdate,
Members: []Member{Member{Name: "zip", Tags: map[string]string{"role": "foo"}}},
},
MemberEvent{
Type: EventMemberUpdate,
Members: []Member{Member{Name: "zip", Tags: map[string]string{"role": "bar"}}},
},
MemberEvent{
Type: EventMemberReap,
Members: []Member{Member{Name: "dead"}},
},
}
for _, e := range send {
inCh <- e
}
events := make(map[EventType]Event)
timeout := time.After(10 * time.Millisecond)
MEMBEREVENTFORLOOP:
for {
select {
case e := <-outCh:
events[e.EventType()] = e
case <-timeout:
break MEMBEREVENTFORLOOP
}
}
if len(events) != 3 {
t.Fatalf("bad: %#v", events)
}
if e, ok := events[EventMemberLeave]; !ok {
t.Fatalf("bad: %#v", events)
} else {
me := e.(MemberEvent)
if len(me.Members) != 2 {
t.Fatalf("bad: %#v", me)
}
expected := []string{"bar", "foo"}
names := []string{me.Members[0].Name, me.Members[1].Name}
sort.Strings(names)
if !reflect.DeepEqual(expected, names) {
t.Fatalf("bad: %#v", names)
}
}
if e, ok := events[EventMemberUpdate]; !ok {
t.Fatalf("bad: %#v", events)
} else {
me := e.(MemberEvent)
if len(me.Members) != 1 {
t.Fatalf("bad: %#v", me)
}
if me.Members[0].Name != "zip" {
t.Fatalf("bad: %#v", me.Members)
}
if me.Members[0].Tags["role"] != "bar" {
t.Fatalf("bad: %#v", me.Members[0].Tags)
}
}
if e, ok := events[EventMemberReap]; !ok {
t.Fatalf("bad: %#v", events)
} else {
me := e.(MemberEvent)
if len(me.Members) != 1 {
t.Fatalf("bad: %#v", me)
}
if me.Members[0].Name != "dead" {
t.Fatalf("bad: %#v", me.Members)
}
}
}
func TestMemberEventCoalesce_TagUpdate(t *testing.T) {
outCh := make(chan Event, 64)
shutdownCh := make(chan struct{})
defer close(shutdownCh)
c := &memberEventCoalescer{
lastEvents: make(map[string]EventType),
latestEvents: make(map[string]coalesceEvent),
}
inCh := coalescedEventCh(outCh, shutdownCh,
5*time.Millisecond, 5*time.Millisecond, c)
inCh <- MemberEvent{
Type: EventMemberUpdate,
Members: []Member{Member{Name: "foo", Tags: map[string]string{"role": "foo"}}},
}
time.Sleep(10 * time.Millisecond)
select {
case e := <-outCh:
if e.EventType() != EventMemberUpdate {
t.Fatalf("expected update")
}
default:
t.Fatalf("expected update")
}
// Second update should not be suppressed even though
// last event was an update
inCh <- MemberEvent{
Type: EventMemberUpdate,
Members: []Member{Member{Name: "foo", Tags: map[string]string{"role": "bar"}}},
}
time.Sleep(10 * time.Millisecond)
select {
case e := <-outCh:
if e.EventType() != EventMemberUpdate {
t.Fatalf("expected update")
}
default:
t.Fatalf("expected update")
}
}
func TestMemberEventCoalesce_passThrough(t *testing.T) {
cases := []struct {
e Event
handle bool
}{
{UserEvent{}, false},
{MemberEvent{Type: EventMemberJoin}, true},
{MemberEvent{Type: EventMemberLeave}, true},
{MemberEvent{Type: EventMemberFailed}, true},
{MemberEvent{Type: EventMemberUpdate}, true},
{MemberEvent{Type: EventMemberReap}, true},
}
for _, tc := range cases {
c := &memberEventCoalescer{}
if tc.handle != c.Handle(tc.e) {
t.Fatalf("bad: %#v", tc.e)
}
}
}
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