1// Copyright 2018 The Prometheus Authors
2// Licensed under the Apache License, Version 2.0 (the "License");
3// you may not use this file except in compliance with the License.
4// You may obtain a copy of the License at
5//
6// http://www.apache.org/licenses/LICENSE-2.0
7//
8// Unless required by applicable law or agreed to in writing, software
9// distributed under the License is distributed on an "AS IS" BASIS,
10// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
11// See the License for the specific language governing permissions and
12// limitations under the License.
13
14package collector
15
16import (
17	"context"
18	"testing"
19
20	"github.com/DATA-DOG/go-sqlmock"
21	"github.com/prometheus/client_golang/prometheus"
22	dto "github.com/prometheus/client_model/go"
23	"github.com/smartystreets/goconvey/convey"
24)
25
26func TestScrapePerfIndexIOWaits(t *testing.T) {
27	db, mock, err := sqlmock.New()
28	if err != nil {
29		t.Fatalf("error opening a stub database connection: %s", err)
30	}
31	defer db.Close()
32
33	columns := []string{"OBJECT_SCHEMA", "OBJECT_NAME", "INDEX_NAME", "COUNT_FETCH", "COUNT_INSERT", "COUNT_UPDATE", "COUNT_DELETE", "SUM_TIMER_FETCH", "SUM_TIMER_INSERT", "SUM_TIMER_UPDATE", "SUM_TIMER_DELETE"}
34	rows := sqlmock.NewRows(columns).
35		// Note, timers are in picoseconds.
36		AddRow("database", "table", "index", "10", "11", "12", "13", "14000000000000", "15000000000000", "16000000000000", "17000000000000").
37		AddRow("database", "table", "NONE", "20", "21", "22", "23", "24000000000000", "25000000000000", "26000000000000", "27000000000000")
38	mock.ExpectQuery(sanitizeQuery(perfIndexIOWaitsQuery)).WillReturnRows(rows)
39
40	ch := make(chan prometheus.Metric)
41	go func() {
42		if err = (ScrapePerfIndexIOWaits{}).Scrape(context.Background(), db, ch); err != nil {
43			t.Errorf("error calling function on test: %s", err)
44		}
45		close(ch)
46	}()
47
48	metricExpected := []MetricResult{
49		{labels: labelMap{"schema": "database", "name": "table", "index": "index", "operation": "fetch"}, value: 10, metricType: dto.MetricType_COUNTER},
50		{labels: labelMap{"schema": "database", "name": "table", "index": "index", "operation": "update"}, value: 12, metricType: dto.MetricType_COUNTER},
51		{labels: labelMap{"schema": "database", "name": "table", "index": "index", "operation": "delete"}, value: 13, metricType: dto.MetricType_COUNTER},
52		{labels: labelMap{"schema": "database", "name": "table", "index": "index", "operation": "fetch"}, value: 14, metricType: dto.MetricType_COUNTER},
53		{labels: labelMap{"schema": "database", "name": "table", "index": "index", "operation": "update"}, value: 16, metricType: dto.MetricType_COUNTER},
54		{labels: labelMap{"schema": "database", "name": "table", "index": "index", "operation": "delete"}, value: 17, metricType: dto.MetricType_COUNTER},
55		{labels: labelMap{"schema": "database", "name": "table", "index": "NONE", "operation": "fetch"}, value: 20, metricType: dto.MetricType_COUNTER},
56		{labels: labelMap{"schema": "database", "name": "table", "index": "NONE", "operation": "insert"}, value: 21, metricType: dto.MetricType_COUNTER},
57		{labels: labelMap{"schema": "database", "name": "table", "index": "NONE", "operation": "update"}, value: 22, metricType: dto.MetricType_COUNTER},
58		{labels: labelMap{"schema": "database", "name": "table", "index": "NONE", "operation": "delete"}, value: 23, metricType: dto.MetricType_COUNTER},
59		{labels: labelMap{"schema": "database", "name": "table", "index": "NONE", "operation": "fetch"}, value: 24, metricType: dto.MetricType_COUNTER},
60		{labels: labelMap{"schema": "database", "name": "table", "index": "NONE", "operation": "insert"}, value: 25, metricType: dto.MetricType_COUNTER},
61		{labels: labelMap{"schema": "database", "name": "table", "index": "NONE", "operation": "update"}, value: 26, metricType: dto.MetricType_COUNTER},
62		{labels: labelMap{"schema": "database", "name": "table", "index": "NONE", "operation": "delete"}, value: 27, metricType: dto.MetricType_COUNTER},
63	}
64	convey.Convey("Metrics comparison", t, func() {
65		for _, expect := range metricExpected {
66			got := readMetric(<-ch)
67			convey.So(got, convey.ShouldResemble, expect)
68		}
69	})
70
71	// Ensure all SQL queries were executed
72	if err := mock.ExpectationsWereMet(); err != nil {
73		t.Errorf("there were unfulfilled exceptions: %s", err)
74	}
75}
76