Add basic Google Spanner test

database/spanner/spanner_test.go

@@ -0,0 +1,24 @@
+package spanner
+
+import (
+	"fmt"
+	"os"
+	"testing"
+
+	dt "github.com/mattes/migrate/database/testing"
+)
+
+func Test(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping testing Google Spanner during short testing")
+	}
+
+	db := os.Getenv("SPANNER_DATABASE")
+	s := &Spanner{}
+	addr := fmt.Sprintf("spanner://%v", db)
+	d, err := s.Open(addr)
+	if err != nil {
+		t.Fatalf("%v", err)
+	}
+	dt.Test(t, d, []byte("SELECT 1"))
+}