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go-zero/core/metric/summary_test.go

69 lines
1.8 KiB
Go

package metric
import (
"strings"
"testing"
"github.com/prometheus/client_golang/prometheus/testutil"
"github.com/stretchr/testify/assert"
"github.com/zeromicro/go-zero/core/proc"
)
func TestNewSummaryVec(t *testing.T) {
summaryVec := NewSummaryVec(&SummaryVecOpts{
VecOpt: VectorOpts{
Namespace: "http_server",
Subsystem: "requests",
Name: "duration_quantiles",
Help: "rpc client requests duration(ms) φ quantiles ",
Labels: []string{"method"},
},
Objectives: map[float64]float64{
0.5: 0.01,
0.9: 0.01,
},
})
defer summaryVec.close()
summaryVecNil := NewSummaryVec(nil)
assert.NotNil(t, summaryVec)
assert.Nil(t, summaryVecNil)
}
func TestSummaryObserve(t *testing.T) {
startAgent()
summaryVec := NewSummaryVec(&SummaryVecOpts{
VecOpt: VectorOpts{
Namespace: "http_server",
Subsystem: "requests",
Name: "duration_quantiles",
Help: "rpc client requests duration(ms) φ quantiles ",
Labels: []string{"method"},
},
Objectives: map[float64]float64{
0.3: 0.01,
0.6: 0.01,
1: 0.01,
},
})
defer summaryVec.close()
sv := summaryVec.(*promSummaryVec)
sv.Observe(100, "GET")
sv.Observe(200, "GET")
sv.Observe(300, "GET")
metadata := `
# HELP http_server_requests_duration_quantiles rpc client requests duration(ms) φ quantiles
# TYPE http_server_requests_duration_quantiles summary
`
val := `
http_server_requests_duration_quantiles{method="GET",quantile="0.3"} 100
http_server_requests_duration_quantiles{method="GET",quantile="0.6"} 200
http_server_requests_duration_quantiles{method="GET",quantile="1"} 300
http_server_requests_duration_quantiles_sum{method="GET"} 600
http_server_requests_duration_quantiles_count{method="GET"} 3
`
err := testutil.CollectAndCompare(sv.summary, strings.NewReader(metadata+val))
assert.Nil(t, err)
proc.Shutdown()
}