Function TestVFSFile_IndexMemoryDoesNotGrowUnbounded

vfs_test.go:227–250

(t *testing.T)

}

func TestVFSFile_IndexMemoryDoesNotGrowUnbounded(t *testing.T) {
	const pageLimit = 16
	client := newMockReplicaClient()
	client.addFixture(t, buildLTXFixture(t, 1, 'a'))

	f := NewVFSFile(client, "mem.db", slog.Default())
	if err := f.Open(); err != nil {
		t.Fatalf("open vfs file: %v", err)
	}

	for i := 0; i < 100; i++ {
		pgno := uint32(i%pageLimit) + 2
		client.addFixture(t, buildLTXFixtureWithPages(t, ltx.TXID(i+2), 4096, []uint32{pgno}, byte('b'+byte(i%26))))
		if err := f.pollReplicaClient(context.Background()); err != nil {
			t.Fatalf("poll replica: %v", err)
		}
	}

	f.mu.Lock()
	defer f.mu.Unlock()
	if l := len(f.index); l > pageLimit+1 { // +1 for initial page 1
		t.Fatalf("index grew unexpectedly: got %d want <= %d", l, pageLimit+1)
	}
}

func TestVFSFile_AutoVacuumShrinksCommit(t *testing.T) {
	client := newMockReplicaClient()