| 1 | // SPDX-License-Identifier: GPL-3.0-or-later |
| 2 | |
| 3 | package discovery |
| 4 | |
| 5 | import ( |
| 6 | "context" |
| 7 | "sort" |
| 8 | "testing" |
| 9 | "time" |
| 10 | |
| 11 | "github.com/netdata/netdata/go/plugins/plugin/framework/confgroup" |
| 12 | |
| 13 | "github.com/stretchr/testify/assert" |
| 14 | "github.com/stretchr/testify/require" |
| 15 | ) |
| 16 | |
| 17 | type discoverySim struct { |
| 18 | mgr *Manager |
| 19 | collectDelay time.Duration |
| 20 | expectedGroups []*confgroup.Group |
| 21 | } |
| 22 | |
| 23 | func (sim discoverySim) run(t *testing.T) { |
| 24 | t.Helper() |
| 25 | require.NotNil(t, sim.mgr) |
| 26 | |
| 27 | in, out := make(chan []*confgroup.Group), make(chan []*confgroup.Group) |
| 28 | go sim.collectGroups(t, in, out) |
| 29 | |
| 30 | ctx, cancel := context.WithCancel(context.Background()) |
| 31 | defer cancel() |
| 32 | go sim.mgr.Run(ctx, in) |
| 33 | |
| 34 | actualGroups := <-out |
| 35 | |
| 36 | sortGroups(sim.expectedGroups) |
| 37 | sortGroups(actualGroups) |
| 38 | |
| 39 | assert.Equal(t, sim.expectedGroups, actualGroups) |
| 40 | } |
| 41 | |
| 42 | func (sim discoverySim) collectGroups(t *testing.T, in, out chan []*confgroup.Group) { |
| 43 | time.Sleep(sim.collectDelay) |
| 44 | |
| 45 | timeout := sim.mgr.sendEvery + time.Second*2 |
| 46 | var groups []*confgroup.Group |
| 47 | loop: |
| 48 | for { |
| 49 | select { |
| 50 | case inGroups := <-in: |
| 51 | if groups = append(groups, inGroups...); len(groups) >= len(sim.expectedGroups) { |
| 52 | break loop |
| 53 | } |
| 54 | case <-time.After(timeout): |
| 55 | t.Logf("discovery %s timed out after %s, got %d groups, expected %d, some events are skipped", |
| 56 | sim.mgr.discoverers, timeout, len(groups), len(sim.expectedGroups)) |
| 57 | break loop |
| 58 | } |
| 59 | } |
| 60 | out <- groups |
| 61 | } |
| 62 | |
| 63 | func sortGroups(groups []*confgroup.Group) { |
| 64 | if len(groups) == 0 { |
| 65 | return |
| 66 | } |
| 67 | sort.Slice(groups, func(i, j int) bool { return groups[i].Source < groups[j].Source }) |
| 68 | } |