Chore: Update test database initialization (#81673)

* streamline initialization of test databases, support on-disk sqlite test db

* clean up test databases

* introduce testsuite helper

* use testsuite everywhere we use a test db

* update documentation

* improve error handling

* disable entity integration test until we can figure out locking error

pkg/tsdb/legacydata/service/service_test.go

@@ -27,9 +27,14 @@ import (
 	secretskvs "github.com/grafana/grafana/pkg/services/secrets/kvstore"
 	secretsmng "github.com/grafana/grafana/pkg/services/secrets/manager"
 	"github.com/grafana/grafana/pkg/services/user"
+	"github.com/grafana/grafana/pkg/tests/testsuite"
 	"github.com/grafana/grafana/pkg/tsdb/legacydata"
 )
 
+func TestMain(m *testing.M) {
+	testsuite.Run(m)
+}
+
 func TestHandleRequest(t *testing.T) {
 	t.Run("Should invoke plugin manager QueryData when handling request for query", func(t *testing.T) {
 		client := &fakePluginsClient{}

pkg/tsdb/mssql/mssql_test.go

@@ -5,7 +5,7 @@ import (
 	"database/sql"
 	"fmt"
 	"math/rand"
-	"strings"
+	"os"
 	"testing"
 	"time"
 
@@ -15,7 +15,6 @@ import (
 	"github.com/stretchr/testify/require"
 
 	"github.com/grafana/grafana/pkg/infra/db"
-	"github.com/grafana/grafana/pkg/services/sqlstore/sqlutil"
 	"github.com/grafana/grafana/pkg/setting"
 	"github.com/grafana/grafana/pkg/tsdb/sqleng"
 )
@@ -1475,9 +1474,16 @@ func TestGenerateConnectionString(t *testing.T) {
 func initMSSQLTestDB(t *testing.T, jsonData sqleng.JsonData) *sql.DB {
 	t.Helper()
 
-	testDB := sqlutil.MSSQLTestDB()
-	db, err := sql.Open(testDB.DriverName, strings.Replace(testDB.ConnStr, "localhost",
-		serverIP, 1))
+	host := os.Getenv("MSSQL_HOST")
+	if host == "" {
+		host = serverIP
+	}
+	port := os.Getenv("MSSQL_PORT")
+	if port == "" {
+		port = "1433"
+	}
+
+	db, err := sql.Open("mssql", fmt.Sprintf("server=%s;port=%s;database=grafanatest;user id=grafana;password=Password!", host, port))
 	require.NoError(t, err)
 
 	db.SetMaxOpenConns(jsonData.MaxOpenConns)