75 lines
2.3 KiB
Go
75 lines
2.3 KiB
Go
package testutil
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import (
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"bytes"
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"database/sql"
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"fmt"
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"os"
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"path/filepath"
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"strings"
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"testing"
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"time"
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"github.com/go-sql-driver/mysql"
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"github.com/wmms/wmms/pkg/database"
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)
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// NewIsolationDB 在显式配置的 MySQL 服务器（TEST_DB_DSN 指向 company_isolation_test*）上
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// 创建一个一次性的库，载入 scripts/init.sql 的空库结构，并把 database.DB 指向它；测试结束
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// 自动删库并恢复。与 repository 侧的同名测试集共用同一台服务器与同一套空库结构，
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// 让 Service 层的事务场景能直接跑真实 MySQL。未配置 TEST_DB_DSN 时跳过。
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func NewIsolationDB(t *testing.T) *sql.DB {
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t.Helper()
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dsn := os.Getenv("TEST_DB_DSN")
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if dsn == "" {
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t.Skip("real MySQL integration requires TEST_DB_DSN")
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}
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cfg, err := mysql.ParseDSN(dsn)
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if err != nil {
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t.Fatal(err)
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}
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if !strings.HasPrefix(cfg.DBName, "company_isolation_test") {
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t.Fatal("TEST_DB_DSN must name a company_isolation_test schema")
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}
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cfg.DBName = ""
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cfg.MultiStatements = true
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cfg.ParseTime = true
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// Match database.Init: a legitimate no-op update still matches its row.
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cfg.ClientFoundRows = true
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admin, err := sql.Open("mysql", cfg.FormatDSN())
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if err != nil {
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t.Fatal(err)
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}
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name := fmt.Sprintf("company_isolation_test_%d", time.Now().UnixNano())
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if _, err = admin.Exec("CREATE DATABASE `" + name + "` CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci"); err != nil {
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admin.Close()
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t.Fatal(err)
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}
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cfg.DBName = name
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db, err := sql.Open("mysql", cfg.FormatDSN())
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if err != nil {
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t.Fatal(err)
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}
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original := database.DB
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database.DB = db
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t.Cleanup(func() { database.DB = original; db.Close(); admin.Exec("DROP DATABASE `" + name + "`"); admin.Close() })
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content, err := os.ReadFile(filepath.Join("..", "..", "scripts", "init.sql"))
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if err != nil {
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t.Fatal(err)
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}
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// init.sql 可能带 UTF-8 BOM，按字节剥掉，避免第一行 CREATE TABLE 解析失败。
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content = bytes.TrimPrefix(content, []byte{0xEF, 0xBB, 0xBF})
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var lines []string
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for _, line := range strings.Split(string(content), "\n") {
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if strings.HasPrefix(line, "CREATE DATABASE") || strings.HasPrefix(line, "USE ") {
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continue
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}
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lines = append(lines, line)
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}
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if _, err = db.Exec(strings.Join(lines, "\n")); err != nil {
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t.Fatalf("initialize scripts/init.sql: %v", err)
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}
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return db
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}
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