sqlds: fix text in comments for tests

pkg/tsdb/mssql/mssql_test.go

@@ -16,10 +16,10 @@ import (
 )
 
 // To run this test, remove the Skip from SkipConvey
-// and set up a MSSQL db named grafanatest and a user/password grafana/Password!
+// The tests require a MSSQL db named grafanatest and a user/password grafana/Password!
 // Use the docker/blocks/mssql_tests/docker-compose.yaml to spin up a
 // preconfigured MSSQL server suitable for running these tests.
-// Thers's also a dashboard.json in same directory that you can import to Grafana
+// There is also a dashboard.json in same directory that you can import to Grafana
 // once you've created a datasource for the test server/database.
 // If needed, change the variable below to the IP address of the database.
 var serverIP string = "localhost"

pkg/tsdb/mysql/mysql_test.go

@@ -17,10 +17,11 @@ import (
 )
 
 // To run this test, set runMySqlTests=true
-// and set up a MySQL db named grafana_ds_tests and a user/password grafana/password
+// Or from the commandline: GRAFANA_TEST_DB=mysql go test -v ./pkg/tsdb/mysql
+// The tests require a MySQL db named grafana_ds_tests and a user/password grafana/password
 // Use the docker/blocks/mysql_tests/docker-compose.yaml to spin up a
 // preconfigured MySQL server suitable for running these tests.
-// Thers's also a dashboard.json in same directory that you can import to Grafana
+// There is also a dashboard.json in same directory that you can import to Grafana
 // once you've created a datasource for the test server/database.
 func TestMySQL(t *testing.T) {
 	// change to true to run the MySQL tests

pkg/tsdb/postgres/postgres_test.go

@@ -17,11 +17,12 @@ import (
 	. "github.com/smartystreets/goconvey/convey"
 )
 
-// To run this test, set runMySqlTests=true
-// and set up a PostgreSQL db named grafanadstest and a user/password grafanatest/grafanatest!
+// To run this test, set runPostgresTests=true
+// Or from the commandline: GRAFANA_TEST_DB=postgres go test -v ./pkg/tsdb/postgres
+// The tests require a PostgreSQL db named grafanadstest and a user/password grafanatest/grafanatest!
 // Use the docker/blocks/postgres_tests/docker-compose.yaml to spin up a
 // preconfigured Postgres server suitable for running these tests.
-// Thers's also a dashboard.json in same directory that you can import to Grafana
+// There is also a dashboard.json in same directory that you can import to Grafana
 // once you've created a datasource for the test server/database.
 func TestPostgres(t *testing.T) {
 	// change to true to run the MySQL tests