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Evan JarrettandClaude Opus 5
8d7ccd7cb7
`go fix` carries the modernize analyzers now, and the tree had drifted behind
them. This is the mechanical result, reviewed rather than trusted: the tool is
capable of rewriting code into something that no longer tests or does what it
did, so every non-test change was read individually and the concurrency-bearing
packages were re-run under -race.
Production code, four changes, all semantics-preserving:
- leases/manager.go: wg.Add(1) + go + defer wg.Done() becomes wg.Go. The
comment above that function turns on Add happening before the goroutine
starts, so that a Wait cannot return before the worker has run. wg.Go does
the Add synchronously on the calling goroutine, so the invariant it
describes still holds.
- auth/token/handler.go: strings.Fields -> strings.FieldsSeq, same splitting,
iterated rather than allocated.
- hold/gc/gc.go: a hand-written map copy -> maps.Copy.
- hold/pds/scan_broadcaster.go: three-clause loop -> range over int.
The rest are tests. The one worth naming is carstore_contention_test.go, where a
careless rewrite could have quietly stopped exercising contention: go fix
converted the reader and side-table goroutines to loopWG.Go but correctly
declined to touch the writer loop, which passes its index as a parameter. The
writer/reader/side-table shape and the stop channel are unchanged, so the test
still contends over the same carstore transactions.
Verified: go build for hold and appview, `make lint` 0 issues, the deploy and
credential-helper modules 0 issues, `make test` green across all 43 packages,
and -race green on leases, hold/pds, hold/gc and auth/token. The scanner module's
two lint findings are unchanged from HEAD and are in files go fix never touched.
Kept separate from the HTTP/2 commit so that one stays readable, and so this can
be reverted on its own if a modernization turns out to matter.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01TA9D4DjaLZTvzQ7dJbu4eg
94 lines
2.6 KiB
Go
94 lines
2.6 KiB
Go
package db
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import (
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"context"
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"database/sql"
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"path/filepath"
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"testing"
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)
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// assertPoolSettings checks journal mode and busy_timeout on several
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// simultaneously held connections. Holding them at once forces database/sql to
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// open distinct connections: busy_timeout is per-connection, so a regression to
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// a one-shot "PRAGMA busy_timeout" on the pool shows up on conn 1 onward.
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func assertPoolSettings(t *testing.T, label string, db *sql.DB, wantJournal string, wantBusy int) {
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t.Helper()
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ctx := context.Background()
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const n = 4
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conns := make([]*sql.Conn, 0, n)
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defer func() {
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for _, c := range conns {
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_ = c.Close()
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}
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}()
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for i := range n {
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c, err := db.Conn(ctx)
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if err != nil {
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t.Fatalf("%s: open conn %d: %v", label, i, err)
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}
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conns = append(conns, c)
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}
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for i, c := range conns {
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var journal string
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if err := c.QueryRowContext(ctx, "PRAGMA journal_mode").Scan(&journal); err != nil {
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t.Fatalf("%s conn %d: read journal_mode: %v", label, i, err)
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}
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if journal != wantJournal {
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t.Errorf("%s conn %d: journal_mode = %q, want %q", label, i, journal, wantJournal)
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}
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var busy int
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if err := c.QueryRowContext(ctx, "PRAGMA busy_timeout").Scan(&busy); err != nil {
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t.Fatalf("%s conn %d: read busy_timeout: %v", label, i, err)
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}
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if busy != wantBusy {
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t.Errorf("%s conn %d: busy_timeout = %d, want %d", label, i, busy, wantBusy)
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}
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}
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}
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func TestOpenLocalDBSettingsOnEveryConnection(t *testing.T) {
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path := filepath.Join(t.TempDir(), "db.sqlite3")
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db, err := OpenLocalDB(path)
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if err != nil {
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t.Fatalf("OpenLocalDB: %v", err)
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}
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defer db.Close()
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assertPoolSettings(t, "OpenLocalDB", db, "wal", DefaultBusyTimeoutMs)
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}
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func TestOpenHoldDBSettingsOnEveryConnection(t *testing.T) {
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path := filepath.Join(t.TempDir(), "db.sqlite3")
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h, err := OpenHoldDB(path, LibsqlConfig{})
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if err != nil {
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t.Fatalf("OpenHoldDB: %v", err)
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}
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defer h.Close()
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assertPoolSettings(t, "OpenHoldDB", h.DB, "wal", DefaultBusyTimeoutMs)
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}
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func TestCarstoreSettingsOnEveryConnection(t *testing.T) {
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sqs, err := NewSqliteStore(t.TempDir())
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if err != nil {
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t.Fatalf("NewSqliteStore: %v", err)
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}
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defer sqs.Close()
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assertPoolSettings(t, "carstore", sqs.DB(), "wal", DefaultBusyTimeoutMs)
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}
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// TestOpenLocalDBMemory documents that ":memory:" is left unwrapped: libsql
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// gives each connection its own private database, so there is no shared lock to
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// wait on and WAL does not apply.
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func TestOpenLocalDBMemory(t *testing.T) {
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db, err := OpenLocalDB(":memory:")
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if err != nil {
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t.Fatalf("OpenLocalDB(:memory:): %v", err)
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}
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defer db.Close()
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if err := db.Ping(); err != nil {
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t.Fatalf("ping in-memory db: %v", err)
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}
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}
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