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* upgrade to use testfixtures v3 * simplify logic * make vendor * update per @lunny * Update templates/repo/empty.tmpl * Update templates/repo/empty.tmpl Co-authored-by: Lauris BH <lauris@nix.lv>
153 lines
3.8 KiB
Go
Vendored
153 lines
3.8 KiB
Go
Vendored
package testfixtures
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import (
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"database/sql"
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"fmt"
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"strings"
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)
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type sqlserver struct {
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baseHelper
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paramTypeCache int
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tables []string
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}
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func (h *sqlserver) init(db *sql.DB) error {
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var err error
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// NOTE(@andreynering): The SQL Server lib (github.com/denisenkom/go-mssqldb)
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// supports both the "?" style (when using the deprecated "mssql" driver)
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// and the "@p1" style (when using the new "sqlserver" driver).
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//
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// Since we don't have a way to know which driver it's been used,
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// this is a small hack to detect the allowed param style.
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var v int
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if err := db.QueryRow("SELECT ?", 1).Scan(&v); err == nil && v == 1 {
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h.paramTypeCache = paramTypeQuestion
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} else {
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h.paramTypeCache = paramTypeAtSign
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}
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h.tables, err = h.tableNames(db)
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if err != nil {
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return err
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}
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return nil
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}
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func (h *sqlserver) paramType() int {
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return h.paramTypeCache
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}
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func (*sqlserver) quoteKeyword(s string) string {
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parts := strings.Split(s, ".")
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for i, p := range parts {
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parts[i] = fmt.Sprintf(`[%s]`, p)
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}
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return strings.Join(parts, ".")
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}
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func (*sqlserver) databaseName(q queryable) (string, error) {
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var dbName string
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err := q.QueryRow("SELECT DB_NAME()").Scan(&dbName)
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return dbName, err
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}
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func (*sqlserver) tableNames(q queryable) ([]string, error) {
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rows, err := q.Query("SELECT table_schema + '.' + table_name FROM information_schema.tables WHERE table_name <> 'spt_values'")
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if err != nil {
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return nil, err
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}
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defer rows.Close()
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var tables []string
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for rows.Next() {
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var table string
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if err = rows.Scan(&table); err != nil {
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return nil, err
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}
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tables = append(tables, table)
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}
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if err = rows.Err(); err != nil {
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return nil, err
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}
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return tables, nil
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}
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func (h *sqlserver) tableHasIdentityColumn(q queryable, tableName string) (bool, error) {
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sql := fmt.Sprintf(`
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SELECT COUNT(*)
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FROM SYS.IDENTITY_COLUMNS
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WHERE OBJECT_ID = OBJECT_ID('%s')
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`, tableName)
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var count int
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if err := q.QueryRow(sql).Scan(&count); err != nil {
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return false, err
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}
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return count > 0, nil
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}
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func (h *sqlserver) whileInsertOnTable(tx *sql.Tx, tableName string, fn func() error) (err error) {
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hasIdentityColumn, err := h.tableHasIdentityColumn(tx, tableName)
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if err != nil {
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return err
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}
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if hasIdentityColumn {
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defer func() {
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_, err2 := tx.Exec(fmt.Sprintf("SET IDENTITY_INSERT %s OFF", h.quoteKeyword(tableName)))
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if err2 != nil && err == nil {
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err = fmt.Errorf("testfixtures: could not disable identity insert: %w", err2)
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}
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}()
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_, err := tx.Exec(fmt.Sprintf("SET IDENTITY_INSERT %s ON", h.quoteKeyword(tableName)))
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if err != nil {
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return fmt.Errorf("testfixtures: could not enable identity insert: %w", err)
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}
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}
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return fn()
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}
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func (h *sqlserver) disableReferentialIntegrity(db *sql.DB, loadFn loadFunction) (err error) {
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// ensure the triggers are re-enable after all
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defer func() {
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var sql string
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for _, table := range h.tables {
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sql += fmt.Sprintf("ALTER TABLE %s WITH CHECK CHECK CONSTRAINT ALL;", h.quoteKeyword(table))
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}
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if _, err2 := db.Exec(sql); err2 != nil && err == nil {
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err = err2
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}
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}()
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var sql string
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for _, table := range h.tables {
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sql += fmt.Sprintf("ALTER TABLE %s NOCHECK CONSTRAINT ALL;", h.quoteKeyword(table))
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}
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if _, err := db.Exec(sql); err != nil {
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return err
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}
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tx, err := db.Begin()
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if err != nil {
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return err
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}
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defer tx.Rollback()
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if err = loadFn(tx); err != nil {
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return err
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}
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return tx.Commit()
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}
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// splitter is a batchSplitter interface implementation. We need it for
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// SQL Server because commands like a `CREATE SCHEMA...` and a `CREATE TABLE...`
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// could not be executed in the same batch.
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// See https://docs.microsoft.com/en-us/previous-versions/sql/sql-server-2008-r2/ms175502(v=sql.105)#rules-for-using-batches
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func (*sqlserver) splitter() []byte {
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return []byte("GO\n")
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}
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