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// Copyright 2023 The Prometheus Authors
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package collector
import (
"context"
"testing"
"github.com/DATA-DOG/go-sqlmock"
"github.com/prometheus/client_golang/prometheus"
dto "github.com/prometheus/client_model/go"
"github.com/smartystreets/goconvey/convey"
)
func TestPgStatioUserIndexesCollector(t *testing.T) {
db, mock, err := sqlmock.New()
if err != nil {
t.Fatalf("Error opening a stub db connection: %s", err)
}
defer db.Close()
inst := &instance{db: db}
columns := []string{
"schemaname",
"relname",
"indexrelname",
"idx_blks_read",
"idx_blks_hit",
}
rows := sqlmock.NewRows(columns).
AddRow("public", "pgtest_accounts", "pgtest_accounts_pkey", 8, 9)
mock.ExpectQuery(sanitizeQuery(statioUserIndexesQuery)).WillReturnRows(rows)
ch := make(chan prometheus.Metric)
go func() {
defer close(ch)
c := PGStatioUserIndexesCollector{}
if err := c.Update(context.Background(), inst, ch); err != nil {
t.Errorf("Error calling PGStatioUserIndexesCollector.Update: %s", err)
}
}()
expected := []MetricResult{
{labels: labelMap{"schemaname": "public", "relname": "pgtest_accounts", "indexrelname": "pgtest_accounts_pkey"}, value: 8, metricType: dto.MetricType_COUNTER},
{labels: labelMap{"schemaname": "public", "relname": "pgtest_accounts", "indexrelname": "pgtest_accounts_pkey"}, value: 9, metricType: dto.MetricType_COUNTER},
}
convey.Convey("Metrics comparison", t, func() {
for _, expect := range expected {
m := readMetric(<-ch)
convey.So(expect, convey.ShouldResemble, m)
}
})
if err := mock.ExpectationsWereMet(); err != nil {
t.Errorf("there were unfulfilled exceptions: %s", err)
}
}
func TestPgStatioUserIndexesCollectorNull(t *testing.T) {
db, mock, err := sqlmock.New()
if err != nil {
t.Fatalf("Error opening a stub db connection: %s", err)
}
defer db.Close()
inst := &instance{db: db}
columns := []string{
"schemaname",
"relname",
"indexrelname",
"idx_blks_read",
"idx_blks_hit",
}
rows := sqlmock.NewRows(columns).
AddRow(nil, nil, nil, nil, nil)
mock.ExpectQuery(sanitizeQuery(statioUserIndexesQuery)).WillReturnRows(rows)
ch := make(chan prometheus.Metric)
go func() {
defer close(ch)
c := PGStatioUserIndexesCollector{}
if err := c.Update(context.Background(), inst, ch); err != nil {
t.Errorf("Error calling PGStatioUserIndexesCollector.Update: %s", err)
}
}()
expected := []MetricResult{
{labels: labelMap{"schemaname": "unknown", "relname": "unknown", "indexrelname": "unknown"}, value: 0, metricType: dto.MetricType_COUNTER},
{labels: labelMap{"schemaname": "unknown", "relname": "unknown", "indexrelname": "unknown"}, value: 0, metricType: dto.MetricType_COUNTER},
}
convey.Convey("Metrics comparison", t, func() {
for _, expect := range expected {
m := readMetric(<-ch)
convey.So(expect, convey.ShouldResemble, m)
}
})
if err := mock.ExpectationsWereMet(); err != nil {
t.Errorf("there were unfulfilled exceptions: %s", err)
}
}
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