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// SPDX-License-Identifier: GPL-3.0-or-later
package discovery
import (
"context"
"sort"
"testing"
"time"
"github.com/netdata/netdata/go/go.d.plugin/agent/confgroup"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
type discoverySim struct {
mgr *Manager
collectDelay time.Duration
expectedGroups []*confgroup.Group
}
func (sim discoverySim) run(t *testing.T) {
t.Helper()
require.NotNil(t, sim.mgr)
in, out := make(chan []*confgroup.Group), make(chan []*confgroup.Group)
go sim.collectGroups(t, in, out)
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
go sim.mgr.Run(ctx, in)
actualGroups := <-out
sortGroups(sim.expectedGroups)
sortGroups(actualGroups)
assert.Equal(t, sim.expectedGroups, actualGroups)
}
func (sim discoverySim) collectGroups(t *testing.T, in, out chan []*confgroup.Group) {
time.Sleep(sim.collectDelay)
timeout := sim.mgr.sendEvery + time.Second*2
var groups []*confgroup.Group
loop:
for {
select {
case inGroups := <-in:
if groups = append(groups, inGroups...); len(groups) >= len(sim.expectedGroups) {
break loop
}
case <-time.After(timeout):
t.Logf("discovery %s timed out after %s, got %d groups, expected %d, some events are skipped",
sim.mgr.discoverers, timeout, len(groups), len(sim.expectedGroups))
break loop
}
}
out <- groups
}
func sortGroups(groups []*confgroup.Group) {
if len(groups) == 0 {
return
}
sort.Slice(groups, func(i, j int) bool { return groups[i].Source < groups[j].Source })
}
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