implement go18 Pinger

sqlite3_context.go

@@ -0,0 +1,14 @@
+package sqlite3
+
+import (
+	"context"
+	"errors"
+)
+
+// Ping implement Pinger.
+func (c *SQLiteConn) Ping(ctx context.Context) error {
+	if c.db == nil {
+		return errors.New("Connection was closed")
+	}
+	return nil
+}

sqlite3_test.go

@@ -1315,6 +1315,22 @@ func TestDeclTypes(t *testing.T) {
 	}
 }
 
+func TestPinger(t *testing.T) {
+	db, err := sql.Open("sqlite3", ":memory:")
+	if err != nil {
+		t.Fatal(err)
+	}
+	err = db.Ping()
+	if err != nil {
+		t.Fatal(err)
+	}
+	db.Close()
+	err = db.Ping()
+	if err == nil {
+		t.Fatal("Should be closed")
+	}
+}
+
 var customFunctionOnce sync.Once
 
 func BenchmarkCustomFunctions(b *testing.B) {