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|
package backrest
import (
"bytes"
"fmt"
"strings"
"testing"
"github.com/go-kit/log"
"github.com/prometheus/client_golang/prometheus"
"github.com/prometheus/common/expfmt"
)
func TestGetExporterMetrics(t *testing.T) {
type args struct {
exporterVer string
testText string
setUpMetricValueFun setUpMetricValueFunType
}
templateMetrics := `# HELP pgbackrest_exporter_info Information about pgBackRest exporter.
# TYPE pgbackrest_exporter_info gauge
pgbackrest_exporter_info{version="unknown"} 1
`
tests := []struct {
name string
args args
}{
{"GetExporterInfoGood",
args{
`unknown`,
templateMetrics,
setUpMetricValue,
},
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
getExporterMetrics(tt.args.exporterVer, tt.args.setUpMetricValueFun, logger)
reg := prometheus.NewRegistry()
reg.MustRegister(pgbrExporterInfoMetric)
metricFamily, err := reg.Gather()
if err != nil {
fmt.Println(err)
}
out := &bytes.Buffer{}
for _, mf := range metricFamily {
if _, err := expfmt.MetricFamilyToText(out, mf); err != nil {
panic(err)
}
}
if tt.args.testText != out.String() {
t.Errorf("\nVariables do not match:\n%s\nwant:\n%s", tt.args.testText, out.String())
}
})
}
}
func TestGetExporterInfoErrorsAndDebugs(t *testing.T) {
type args struct {
exporterVer string
setUpMetricValueFun setUpMetricValueFunType
errorsCount int
debugsCount int
}
tests := []struct {
name string
args args
}{
{"GetExporterInfoLogError",
args{
`unknown`,
fakeSetUpMetricValue,
1,
1,
},
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
out := &bytes.Buffer{}
lc := log.NewLogfmtLogger(out)
getExporterMetrics(tt.args.exporterVer, tt.args.setUpMetricValueFun, lc)
errorsOutputCount := strings.Count(out.String(), "level=error")
debugsOutputCount := strings.Count(out.String(), "level=debug")
if tt.args.errorsCount != errorsOutputCount || tt.args.debugsCount != debugsOutputCount {
t.Errorf("\nVariables do not match:\nerrors=%d, debugs=%d\nwant:\nerrors=%d, debugs=%d",
tt.args.errorsCount, tt.args.debugsCount,
errorsOutputCount, debugsOutputCount)
}
})
}
}
func TestGetExporterStatusMetrics(t *testing.T) {
type args struct {
stanzaName string
getDataStatus bool
testText string
setUpMetricValueFun setUpMetricValueFunType
}
tests := []struct {
name string
args args
}{
{"GetExporterStatusGood",
args{
"test",
true,
`# HELP pgbackrest_exporter_status pgBackRest exporter get data status.
# TYPE pgbackrest_exporter_status gauge
pgbackrest_exporter_status{stanza="test"} 1
`,
setUpMetricValue,
},
},
{"GetExporterStatusBad",
args{
"test",
false,
`# HELP pgbackrest_exporter_status pgBackRest exporter get data status.
# TYPE pgbackrest_exporter_status gauge
pgbackrest_exporter_status{stanza="test"} 0
`,
setUpMetricValue,
},
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
resetExporterMetrics()
getExporterStatusMetrics(tt.args.stanzaName, tt.args.getDataStatus, tt.args.setUpMetricValueFun, logger)
reg := prometheus.NewRegistry()
reg.MustRegister(pgbrExporterStatusMetric)
metricFamily, err := reg.Gather()
if err != nil {
fmt.Println(err)
}
out := &bytes.Buffer{}
for _, mf := range metricFamily {
if _, err := expfmt.MetricFamilyToText(out, mf); err != nil {
panic(err)
}
}
if tt.args.testText != out.String() {
t.Errorf("\nVariables do not match:\n%s\nwant:\n%s", tt.args.testText, out.String())
}
})
}
}
func TestGetExporterStatusErrorsAndDebugs(t *testing.T) {
type args struct {
stanzaName string
getDataStatus bool
setUpMetricValueFun setUpMetricValueFunType
errorsCount int
debugsCount int
}
tests := []struct {
name string
args args
}{
{"GetExporterInfoLogError",
args{
`test`,
true,
fakeSetUpMetricValue,
1,
1,
},
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
out := &bytes.Buffer{}
lc := log.NewLogfmtLogger(out)
getExporterStatusMetrics(tt.args.stanzaName, tt.args.getDataStatus, tt.args.setUpMetricValueFun, lc)
errorsOutputCount := strings.Count(out.String(), "level=error")
debugsOutputCount := strings.Count(out.String(), "level=debug")
if tt.args.errorsCount != errorsOutputCount || tt.args.debugsCount != debugsOutputCount {
t.Errorf("\nVariables do not match:\nerrors=%d, debugs=%d\nwant:\nerrors=%d, debugs=%d",
tt.args.errorsCount, tt.args.debugsCount,
errorsOutputCount, debugsOutputCount)
}
})
}
}
|
