Files
weave-scope/app/collector_test.go
Bryan Boreham 33acfa1e59 Log part-merged nodes dropped to tracing
So we have more idea what happened, in case of issue.
2021-04-23 10:51:24 +00:00

134 lines
2.9 KiB
Go

package app_test
import (
"testing"
"time"
"context"
"github.com/weaveworks/common/mtime"
"github.com/weaveworks/common/test"
"github.com/weaveworks/scope/app"
"github.com/weaveworks/scope/report"
"github.com/weaveworks/scope/test/reflect"
)
func TestCollector(t *testing.T) {
ctx := context.Background()
window := 10 * time.Second
c := app.NewCollector(window)
now := time.Now()
mtime.NowForce(now)
defer mtime.NowReset()
r1 := report.MakeReport()
r1.Endpoint.AddNode(report.MakeNode("foo").WithTopology("bar"))
r2 := report.MakeReport()
r2.Endpoint.AddNode(report.MakeNode("foo").WithTopology("bar"))
have, err := c.Report(ctx, mtime.Now())
if err != nil {
t.Error(err)
}
if want := report.MakeReport(); !reflect.DeepEqual(want, have) {
t.Error(test.Diff(want, have))
}
c.Add(ctx, r1, nil)
have, err = c.Report(ctx, mtime.Now())
if err != nil {
t.Error(err)
}
if want := r1; !reflect.DeepEqual(want, have) {
t.Error(test.Diff(want, have))
}
timeBefore := mtime.Now()
mtime.NowForce(now.Add(time.Second))
c.Add(ctx, r2, nil)
merged := report.MakeReport()
merged.UnsafeMerge(r1)
merged.UnsafeMerge(r2)
merged.UnsafeRemovePartMergedNodes(context.Background())
have, err = c.Report(ctx, mtime.Now())
if err != nil {
t.Error(err)
}
if want := merged; !reflect.DeepEqual(want, have) {
t.Error(test.Diff(want, have))
}
// Since the timestamp given is before r2 was added,
// it shouldn't be included in the final report.
have, err = c.Report(ctx, timeBefore)
if err != nil {
t.Error(err)
}
if want := r1; !reflect.DeepEqual(want, have) {
t.Error(test.Diff(want, have))
}
}
func TestCollectorExpire(t *testing.T) {
now := time.Now()
mtime.NowForce(now)
defer mtime.NowReset()
ctx := context.Background()
window := 10 * time.Second
c := app.NewCollector(window)
// 1st check the collector is empty
have, err := c.Report(ctx, mtime.Now())
if err != nil {
t.Error(err)
}
if want := report.MakeReport(); !reflect.DeepEqual(want, have) {
t.Error(test.Diff(want, have))
}
// Now check an added report is returned
r1 := report.MakeReport()
r1.Endpoint.AddNode(report.MakeNode("foo"))
c.Add(ctx, r1, nil)
have, err = c.Report(ctx, mtime.Now())
if err != nil {
t.Error(err)
}
if want := r1; !reflect.DeepEqual(want, have) {
t.Error(test.Diff(want, have))
}
// Finally move time forward to expire the report
mtime.NowForce(now.Add(window))
have, err = c.Report(ctx, mtime.Now())
if err != nil {
t.Error(err)
}
if want := report.MakeReport(); !reflect.DeepEqual(want, have) {
t.Error(test.Diff(want, have))
}
}
func TestCollectorWait(t *testing.T) {
ctx := context.Background()
window := time.Millisecond
c := app.NewCollector(window)
waiter := make(chan struct{}, 1)
c.WaitOn(ctx, waiter)
defer c.UnWait(ctx, waiter)
c.(interface {
Broadcast()
}).Broadcast()
select {
case <-waiter:
default:
t.Fatal("Didn't unblock")
}
}