energylink/pkg/tsdb/mssql/mssql_test.go

package mssql

import (
	"fmt"
	"strings"
	"testing"
	"time"

	"github.com/go-xorm/xorm"
	"github.com/grafana/grafana/pkg/components/simplejson"
	"github.com/grafana/grafana/pkg/log"
	"github.com/grafana/grafana/pkg/services/sqlstore/sqlutil"
	"github.com/grafana/grafana/pkg/tsdb"
	. "github.com/smartystreets/goconvey/convey"
)

// To run this test, remove the Skip from SkipConvey
// and set up a MSSQL db named grafana_tests and a user/password grafana/Password!
// and set the variable below to the IP address of the database
var serverIP string = "localhost"

func TestMSSQL(t *testing.T) {
	Convey("MSSQL", t, func() {
		x := InitMSSQLTestDB(t)

		endpoint := &MssqlQueryEndpoint{
			sqlEngine: &tsdb.DefaultSqlEngine{
				MacroEngine: NewMssqlMacroEngine(),
				XormEngine:  x,
			},
			log: log.New("tsdb.mssql"),
		}

		sess := x.NewSession()
		defer sess.Close()

		sql := `
			IF OBJECT_ID('dbo.[mssql_types]', 'U') IS NOT NULL
				DROP TABLE dbo.[mssql_types]

			CREATE TABLE [mssql_types] (
				c_bit bit,
				c_tinyint tinyint,
				c_smallint smallint,
				c_int int,
				c_bigint bigint,
				c_money money,
				c_smallmoney smallmoney,
				c_numeric numeric(10,5),

				c_real real,
				c_decimal decimal(10,2),
				c_float float,

				c_char char(10),
				c_varchar varchar(10),
				c_text text,

				c_nchar nchar(12),
				c_nvarchar nvarchar(12),
				c_ntext ntext,

				c_datetime datetime,
				c_datetime2 datetime2,
				c_smalldatetime smalldatetime,
				c_date date,
				c_time time,
				c_datetimeoffset datetimeoffset
			)

			IF OBJECT_ID('dbo.[metric]', 'U') IS NOT NULL
				DROP TABLE dbo.[metric]

			CREATE TABLE [metric] (
				time datetime,
				measurement nvarchar(100),
				value int
			)
		`

		_, err := sess.Exec(sql)
		So(err, ShouldBeNil)

		// type metric struct {
		// 	Time        time.Time
		// 	Measurement string
		// 	Value       int64
		// }

		// series := []*metric{}

		// from := time.Now().Truncate(60 * time.Minute).Add((-30 * time.Minute))
		// for _, t := range genTimeRangeByInterval(from, 10*time.Minute, 10*time.Second) {
		// 	series = append(series, &metric{
		// 		Time:        t,
		// 		Measurement: "test",
		// 		Value:       0,
		// 	})
		// }

		// for _, t := range genTimeRangeByInterval(from.Add(20*time.Minute), 10*time.Minute, 10*time.Second) {
		// 	series = append(series, &metric{
		// 		Time:        t,
		// 		Measurement: "test",
		// 		Value:       0,
		// 	})
		// }

		// rowsAffected, err := sess.InsertMulti(series)
		// So(err, ShouldBeNil)
		// So(rowsAffected, ShouldBeGreaterThan, 0)

		dt := time.Date(2018, 3, 14, 21, 20, 6, 527e6, time.UTC)
		dtFormat := "2006-01-02 15:04:05.999999999"
		d := dt.Format(dtFormat)
		dt2 := time.Date(2018, 3, 14, 21, 20, 6, 8896406e2, time.UTC)
		dt2Format := "2006-01-02 15:04:05.999999999 -07:00"
		d2 := dt2.Format(dt2Format)

		sql = fmt.Sprintf(`
			INSERT INTO [mssql_types]
			SELECT
        1, 5, 20020, 980300, 1420070400, '$20000.15', '£2.15', 12345.12,
        1.11, 2.22, 3.33,
				'char10', 'varchar10', 'text',
				N'☺nchar12☺', N'☺nvarchar12☺', N'☺text☺',
			  CAST('%s' AS DATETIME), CAST('%s' AS DATETIME2), CAST('%s' AS SMALLDATETIME), CAST('%s' AS DATE), CAST('%s' AS TIME), SWITCHOFFSET(CAST('%s' AS DATETIMEOFFSET), '-07:00')
    `, d, d2, d, d, d, d2)

		_, err = sess.Exec(sql)
		So(err, ShouldBeNil)

		Convey("Query with Table format should map MSSQL column types to Go types", func() {
			query := &tsdb.TsdbQuery{
				Queries: []*tsdb.Query{
					{
						Model: simplejson.NewFromAny(map[string]interface{}{
							"rawSql": "SELECT * FROM mssql_types",
							"format": "table",
						}),
						RefId: "A",
					},
				},
			}

			resp, err := endpoint.Query(nil, nil, query)
			queryResult := resp.Results["A"]
			So(err, ShouldBeNil)

			column := queryResult.Tables[0].Rows[0]

			So(column[0].(bool), ShouldEqual, true)
			So(column[1].(int64), ShouldEqual, 5)
			So(column[2].(int64), ShouldEqual, 20020)
			So(column[3].(int64), ShouldEqual, 980300)
			So(column[4].(int64), ShouldEqual, 1420070400)
			// So(column[5].(float64), ShouldEqual, 20000.15)
			// So(column[6].(float64), ShouldEqual, 2.15)
			//So(column[7].(float64), ShouldEqual, 12345.12)

			So(column[8].(float64), ShouldEqual, 1.1100000143051147) // MSSQL dose not have precision for "real" datatype
			// fix me: MSSQL driver puts the decimal inside an array of chars. and the test fails despite the values are correct.
			//So(column[9].([]uint8), ShouldEqual, []uint8{'2', '.', '2', '2'})
			So(column[10].(float64), ShouldEqual, 3.33)

			So(column[11].(string), ShouldEqual, "char10    ")
			So(column[12].(string), ShouldEqual, "varchar10")
			So(column[13].(string), ShouldEqual, "text")

			So(column[14].(string), ShouldEqual, "☺nchar12☺   ")
			So(column[15].(string), ShouldEqual, "☺nvarchar12☺")
			So(column[16].(string), ShouldEqual, "☺text☺")

			So(column[17].(time.Time), ShouldEqual, dt)
			So(column[18].(time.Time), ShouldEqual, dt2)
			So(column[19].(time.Time), ShouldEqual, dt.Truncate(time.Minute))
			So(column[20].(time.Time), ShouldEqual, dt.Truncate(24*time.Hour))
			So(column[21].(time.Time), ShouldEqual, time.Date(1, 1, 1, dt.Hour(), dt.Minute(), dt.Second(), dt.Nanosecond(), time.UTC))
			So(column[22].(time.Time), ShouldEqual, dt2.In(time.FixedZone("UTC", int(-7*time.Hour))))
		})

		Convey("stored procedure", func() {
			sql := `
				create procedure dbo.test_sp as
				begin
					select 1
				end
			`
			sess.Exec(sql)

			sql = `
				ALTER PROCEDURE dbo.test_sp
					@from int,
					@to 	int
				AS
				BEGIN
					select
						GETDATE() AS Time,
						1 as value,
						'metric' as metric
				END
			`
			_, err := sess.Exec(sql)
			So(err, ShouldBeNil)

			sql = `
				EXEC dbo.test_sp 1, 2
			`
			_, err = sess.Exec(sql)
			So(err, ShouldBeNil)
		})
	})
}

func InitMSSQLTestDB(t *testing.T) *xorm.Engine {
	x, err := xorm.NewEngine(sqlutil.TestDB_Mssql.DriverName, strings.Replace(sqlutil.TestDB_Mssql.ConnStr, "localhost", serverIP, 1))

	// x.ShowSQL()

	if err != nil {
		t.Fatalf("Failed to init mssql db %v", err)
	}

	sqlutil.CleanDB(x)

	return x
}

func genTimeRangeByInterval(from time.Time, duration time.Duration, interval time.Duration) []time.Time {
	durationSec := int64(duration.Seconds())
	intervalSec := int64(interval.Seconds())
	timeRange := []time.Time{}

	for i := int64(0); i <= durationSec; i += intervalSec {
		timeRange = append(timeRange, from)
		from = from.Add(time.Duration(int64(time.Second) * intervalSec))
	}

	return timeRange
}