Add sqltest package with no-op DataSource definition

pkg/sqltest/data_source.go

@@ -0,0 +1,65 @@
+package sqltest
+
+import (
+	"context"
+	"database/sql"
+
+	"github.com/jmoiron/sqlx"
+
+	"github.com/smartcontractkit/chainlink-common/pkg/sqlutil"
+)
+
+// NewNoOpDataSource returns an empty DataSource type which will satisfy the interface
+func NewNoOpDataSource() sqlutil.DataSource {
+	return &noOpDataSource{}
+}
+
+type noOpDataSource struct{}
+
+func (ds *noOpDataSource) BindNamed(s string, _ interface{}) (string, []interface{}, error) {
+	return "", nil, nil
+}
+
+func (ds *noOpDataSource) DriverName() string {
+	return ""
+}
+
+func (ds *noOpDataSource) ExecContext(ctx context.Context, query string, args ...interface{}) (sql.Result, error) {
+	return nil, nil
+}
+
+func (ds *noOpDataSource) GetContext(ctx context.Context, dest interface{}, query string, args ...interface{}) error {
+	return nil
+}
+
+func (ds *noOpDataSource) NamedExecContext(ctx context.Context, query string, arg interface{}) (sql.Result, error) {
+	return nil, nil
+}
+
+func (ds *noOpDataSource) PrepareContext(ctx context.Context, query string) (*sql.Stmt, error) {
+	return nil, nil
+}
+
+func (_m *noOpDataSource) PrepareNamedContext(ctx context.Context, query string) (*sqlx.NamedStmt, error) {
+	return nil, nil
+}
+
+func (ds *noOpDataSource) QueryContext(ctx context.Context, query string, args ...interface{}) (*sql.Rows, error) {
+	return nil, nil
+}
+
+func (ds *noOpDataSource) QueryRowxContext(ctx context.Context, query string, args ...interface{}) *sqlx.Row {
+	return nil
+}
+
+func (ds *noOpDataSource) QueryxContext(ctx context.Context, query string, args ...interface{}) (*sqlx.Rows, error) {
+	return nil, nil
+}
+
+func (ds *noOpDataSource) Rebind(s string) string {
+	return ""
+}
+
+func (ds *noOpDataSource) SelectContext(ctx context.Context, dest interface{}, query string, args ...interface{}) error {
+	return nil
+}