Add MySQL test to connect to the underlying test database

storage/mysql/mysql_test.go

@@ -0,0 +1,32 @@
+package mysql_test
+
+import (
+	"context"
+	"database/sql"
+	"flag"
+	"os"
+	"testing"
+
+	"k8s.io/klog/v2"
+)
+
+var mysqlURI = flag.String("mysql_uri", "root:root@tcp(db:3306)/test_tessera", "Connection string for a MySQL database")
+
+func TestMain(m *testing.M) {
+	klog.InitFlags(nil)
+	flag.Parse()
+	ctx := context.Background()
+
+	db, err := sql.Open("mysql", *mysqlURI)
+	if err != nil {
+		klog.Errorf("MySQL not available, skipping all MySQL storage tests")
+		return
+	}
+	if err := db.PingContext(ctx); err != nil {
+		klog.Errorf("MySQL not available, skipping all MySQL storage tests")
+		return
+	}
+	klog.Info("Successfully connected to MySQL test database")
+
+	os.Exit(m.Run())
+}