code: def test_get_indexer_read_only(self):
      idx = interval_range(start=0, end=5)
      arr = np.array([1, 2])
      arr.flags.writeable = False
      result = idx.get_indexer(arr)
      expected = np.array([0, 1])
      tm.assert_numpy_array_equal(result, expected, check_dtype=False)
  
      result = idx.get_indexer_non_unique(arr)[0]
      tm.assert_numpy_array_equal(result, expected, check_dtype=False)
  
imports: import re
  import numpy
  import pytest
  from pandas.errors import InvalidIndexError
  from pandas import NA, CategoricalIndex, DatetimeIndex, Index, Interval, IntervalIndex, MultiIndex, NaT, Timedelta, Timestamp, array, date_range, interval_range, isna, period_range, timedelta_range
  import pandas._testing
label_desc: Use image node_id 15 for calling the TestGetIndexer obj's underlying member method code with example usage: obj.test_get_indexer_read_only() without return types