Function TestDropPrefixReadOnly

managed_db_test.go:499–530

(t *testing.T)

}

func TestDropPrefixReadOnly(t *testing.T) {
	dir, err := ioutil.TempDir("", "badger-test")
	require.NoError(t, err)
	defer removeDir(dir)
	opts := getTestOptions(dir)
	opts.ValueLogFileSize = 5 << 20
	db, err := Open(opts)
	require.NoError(t, err)
	N := uint64(1000)
	populate := func(db *DB) {
		writer := db.NewWriteBatch()
		for i := uint64(0); i < N; i++ {
			require.NoError(t, writer.Set([]byte(key("key", int(i))), val(true)))
		}
		require.NoError(t, writer.Flush())
	}

	populate(db)
	require.Equal(t, int(N), numKeys(db))
	require.NoError(t, db.Close())

	opts.ReadOnly = true
	db2, err := Open(opts)
	// acquireDirectoryLock returns ErrWindowsNotSupported on Windows. It can be ignored safely.
	if runtime.GOOS == "windows" {
		require.Equal(t, err, ErrWindowsNotSupported)
	} else {
		require.NoError(t, err)
		require.Panics(t, func() { db2.DropPrefix([]byte("key0")) })
		require.NoError(t, db2.Close())
	}
}

func TestDropPrefixRace(t *testing.T) {
	dir, err := ioutil.TempDir("", "badger-test")