86 lines
2.4 KiB
Go
86 lines
2.4 KiB
Go
package main
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import (
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"context"
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"errors"
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"example.com/mysqlAcceptance/internal/config"
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"example.com/mysqlAcceptance/internal/svc"
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"git.yuntuo.hk/k2safe/go-omni/lifecycle"
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"git.yuntuo.hk/k2safe/go-omni/logx"
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"io"
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"testing"
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"time"
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)
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func TestGeneratedMySQLBackgroundDrain(t *testing.T) {
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cfg, err := config.Load("etc/config.yaml")
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if err != nil {
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t.Fatal(err)
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}
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logger, err := logx.New(logx.Config{Writer: io.Discard})
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if err != nil {
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t.Fatal(err)
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}
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defer logger.Close()
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parent, cancel := context.WithCancel(context.Background())
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defer cancel()
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c, err := svc.New(parent, logger, cfg)
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if err != nil {
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t.Fatal(err)
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}
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defer c.Close()
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stop := make(chan struct{})
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finished := make(chan error, 1)
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c.OnStop("writer", func(context.Context) error { close(stop); return nil })
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c.OnDrain("writer", func(context.Context) error { return <-finished })
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go func() {
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<-stop
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result := func() (err error) {
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ctx, end := context.WithTimeout(c.WorkContext(), 3*time.Second)
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defer end()
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conn, err := c.DB.Conn(ctx)
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if err != nil {
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return err
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}
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defer func() { err = errors.Join(err, conn.Close()) }()
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for _, query := range []string{"CREATE TEMPORARY TABLE omni_phase_records (id INT)", "INSERT INTO omni_phase_records VALUES (42)"} {
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if _, err = conn.ExecContext(ctx, query); err != nil {
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return err
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}
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}
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var n int
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if err = conn.QueryRowContext(ctx, "SELECT id FROM omni_phase_records").Scan(&n); err != nil {
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return err
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}
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if n != 42 {
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return errors.New("final background write missing")
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}
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_, err = conn.ExecContext(ctx, "DROP TEMPORARY TABLE omni_phase_records")
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return err
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}()
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// Completion follows release of the borrowed connection, including failures.
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finished <- result
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}()
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cancel()
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if err = c.Finish(nil); err != nil {
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t.Fatal(err)
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}
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if err = c.DB.PingContext(context.Background()); err == nil {
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t.Fatal("pool not closed after worker finished")
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}
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held, err := svc.New(context.Background(), logger, cfg)
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if err != nil {
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t.Fatal(err)
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}
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defer held.DB.Close() // This test owns recovery and has no outstanding work.
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cause := errors.New("worker completion unproven")
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held.OnDrain("unjoined", func(context.Context) error { return cause })
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if err = held.Finish(nil); !errors.Is(err, cause) || !errors.Is(err, lifecycle.ErrResourcesRetained) {
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t.Fatal(err)
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}
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if err = held.DB.Health(context.Background()); err != nil {
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t.Fatal("unjoined worker lost shared database", err)
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}
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}
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