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// SPDX-License-Identifier: GPL-3.0-or-later
package dmcache
import (
"errors"
"os"
"testing"
"github.com/netdata/netdata/go/go.d.plugin/agent/module"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
var (
dataConfigJSON, _ = os.ReadFile("testdata/config.json")
dataConfigYAML, _ = os.ReadFile("testdata/config.yaml")
)
func Test_testDataIsValid(t *testing.T) {
for name, data := range map[string][]byte{
"dataConfigJSON": dataConfigJSON,
"dataConfigYAML": dataConfigYAML,
} {
require.NotNil(t, data, name)
}
}
func TestDmCace_Configuration(t *testing.T) {
module.TestConfigurationSerialize(t, &DmCache{}, dataConfigJSON, dataConfigYAML)
}
func TestDmCache_Init(t *testing.T) {
tests := map[string]struct {
config Config
wantFail bool
}{
"fails if failed to locate ndsudo": {
wantFail: true,
config: New().Config,
},
}
for name, test := range tests {
t.Run(name, func(t *testing.T) {
lvm := New()
lvm.Config = test.config
if test.wantFail {
assert.Error(t, lvm.Init())
} else {
assert.NoError(t, lvm.Init())
}
})
}
}
func TestDmCache_Cleanup(t *testing.T) {
tests := map[string]struct {
prepare func() *DmCache
}{
"not initialized exec": {
prepare: func() *DmCache {
return New()
},
},
"after check": {
prepare: func() *DmCache {
lvm := New()
lvm.exec = prepareMockOK()
_ = lvm.Check()
return lvm
},
},
"after collect": {
prepare: func() *DmCache {
lvm := New()
lvm.exec = prepareMockOK()
_ = lvm.Collect()
return lvm
},
},
}
for name, test := range tests {
t.Run(name, func(t *testing.T) {
lvm := test.prepare()
assert.NotPanics(t, lvm.Cleanup)
})
}
}
func TestDmCache_Charts(t *testing.T) {
assert.NotNil(t, New().Charts())
}
func TestDmCache_Check(t *testing.T) {
tests := map[string]struct {
prepareMock func() *mockDmsetupExec
wantFail bool
}{
"success case": {
prepareMock: prepareMockOK,
wantFail: false,
},
"error on cache status": {
prepareMock: prepareMockErr,
wantFail: true,
},
"empty response": {
prepareMock: prepareMockEmptyResponse,
wantFail: true,
},
"unexpected response": {
prepareMock: prepareMockUnexpectedResponse,
wantFail: true,
},
}
for name, test := range tests {
t.Run(name, func(t *testing.T) {
dmcache := New()
mock := test.prepareMock()
dmcache.exec = mock
if test.wantFail {
assert.Error(t, dmcache.Check())
} else {
assert.NoError(t, dmcache.Check())
}
})
}
}
func TestLVM_Collect(t *testing.T) {
tests := map[string]struct {
prepareMock func() *mockDmsetupExec
wantCharts int
wantMetrics map[string]int64
}{
"success case": {
prepareMock: prepareMockOK,
wantCharts: len(deviceChartsTmpl) * 2,
wantMetrics: map[string]int64{
"dmcache_device_vg_raid1_md21-media_cache_free_bytes": 1252402397184,
"dmcache_device_vg_raid1_md21-media_cache_used_bytes": 396412059648,
"dmcache_device_vg_raid1_md21-media_demotions_bytes": 0,
"dmcache_device_vg_raid1_md21-media_dirty_bytes": 0,
"dmcache_device_vg_raid1_md21-media_metadata_free_bytes": 32243712,
"dmcache_device_vg_raid1_md21-media_metadata_used_bytes": 9699328,
"dmcache_device_vg_raid1_md21-media_promotions_bytes": 48035266560,
"dmcache_device_vg_raid1_md21-media_read_hits": 82870357,
"dmcache_device_vg_raid1_md21-media_read_misses": 5499462,
"dmcache_device_vg_raid1_md21-media_write_hits": 26280342,
"dmcache_device_vg_raid1_md21-media_write_misses": 8017854,
"dmcache_device_vg_raid2_md22-media_cache_free_bytes": 1252402397184,
"dmcache_device_vg_raid2_md22-media_cache_used_bytes": 396412059648,
"dmcache_device_vg_raid2_md22-media_demotions_bytes": 0,
"dmcache_device_vg_raid2_md22-media_dirty_bytes": 0,
"dmcache_device_vg_raid2_md22-media_metadata_free_bytes": 32243712,
"dmcache_device_vg_raid2_md22-media_metadata_used_bytes": 9699328,
"dmcache_device_vg_raid2_md22-media_promotions_bytes": 48035266560,
"dmcache_device_vg_raid2_md22-media_read_hits": 82870357,
"dmcache_device_vg_raid2_md22-media_read_misses": 5499462,
"dmcache_device_vg_raid2_md22-media_write_hits": 26280342,
"dmcache_device_vg_raid2_md22-media_write_misses": 8017854,
},
},
"error on cache status": {
prepareMock: prepareMockErr,
wantMetrics: nil,
},
"empty response": {
prepareMock: prepareMockEmptyResponse,
wantMetrics: nil,
},
"unexpected response": {
prepareMock: prepareMockUnexpectedResponse,
wantMetrics: nil,
},
}
for name, test := range tests {
t.Run(name, func(t *testing.T) {
dmcache := New()
mock := test.prepareMock()
dmcache.exec = mock
mx := dmcache.Collect()
assert.Equal(t, test.wantMetrics, mx)
assert.Len(t, *dmcache.Charts(), test.wantCharts)
testMetricsHasAllChartsDims(t, dmcache, mx)
})
}
}
func testMetricsHasAllChartsDims(t *testing.T, dmcache *DmCache, mx map[string]int64) {
for _, chart := range *dmcache.Charts() {
if chart.Obsolete {
continue
}
for _, dim := range chart.Dims {
_, ok := mx[dim.ID]
assert.Truef(t, ok, "collected metrics has no data for dim '%s' chart '%s'", dim.ID, chart.ID)
}
}
}
func prepareMockOK() *mockDmsetupExec {
return &mockDmsetupExec{
cacheStatusData: []byte(`
vg_raid1_md21-media: 0 2404139008 cache 8 2368/10240 4096 189024/786216 82870357 5499462 26280342 8017854 0 22905 0 3 metadata2 writethrough no_discard_passdown 2 migration_threshold 32768 mq 10 random_threshold 0 sequential_threshold 0 discard_promote_adjustment 0 read_promote_adjustment 0 write_promote_adjustment 0 rw -
vg_raid2_md22-media: 0 2404139008 cache 8 2368/10240 4096 189024/786216 82870357 5499462 26280342 8017854 0 22905 0 3 metadata2 writethrough no_discard_passdown 2 migration_threshold 32768 mq 10 random_threshold 0 sequential_threshold 0 discard_promote_adjustment 0 read_promote_adjustment 0 write_promote_adjustment 0 rw -
`),
}
}
func prepareMockErr() *mockDmsetupExec {
return &mockDmsetupExec{
errOnCacheStatus: true,
}
}
func prepareMockEmptyResponse() *mockDmsetupExec {
return &mockDmsetupExec{}
}
func prepareMockUnexpectedResponse() *mockDmsetupExec {
return &mockDmsetupExec{
cacheStatusData: []byte(`
Lorem ipsum dolor sit amet, consectetur adipiscing elit.
Nulla malesuada erat id magna mattis, eu viverra tellus rhoncus.
Fusce et felis pulvinar, posuere sem non, porttitor eros.
`),
}
}
type mockDmsetupExec struct {
errOnCacheStatus bool
cacheStatusData []byte
}
func (m *mockDmsetupExec) cacheStatus() ([]byte, error) {
if m.errOnCacheStatus {
return nil, errors.New("mock.cacheStatus() error")
}
return m.cacheStatusData, nil
}
|
