code: def test_constructor(self, dtype):
      index_cls = Index
  
      # scalar raise Exception
      msg = (
          rf"{index_cls.__name__}\(\.\.\.\) must be called with a collection of some "
          "kind, 5 was passed"
      )
      with pytest.raises(TypeError, match=msg):
          index_cls(5)
  
      # copy
      # pass list, coerce fine
      index = index_cls([-5, 0, 1, 2], dtype=dtype)
      arr = index.values.copy()
      new_index = index_cls(arr, copy=True)
      tm.assert_index_equal(new_index, index, exact=True)
      val = int(arr[0]) + 3000
  
      # this should not change index
      if dtype != np.int8:
          # NEP 50 won't allow assignment that would overflow
          arr[0] = val
          assert new_index[0] != val
  
      if dtype == np.int64:
          # pass list, coerce fine
          index = index_cls([-5, 0, 1, 2], dtype=dtype)
          expected = Index([-5, 0, 1, 2], dtype=dtype)
          tm.assert_index_equal(index, expected)
  
          # from iterable
          index = index_cls(iter([-5, 0, 1, 2]), dtype=dtype)
          expected = index_cls([-5, 0, 1, 2], dtype=dtype)
          tm.assert_index_equal(index, expected, exact=True)
  
          # interpret list-like
          expected = index_cls([5, 0], dtype=dtype)
          for cls in [Index, index_cls]:
              for idx in [
                  cls([5, 0], dtype=dtype),
                  cls(np.array([5, 0]), dtype=dtype),
                  cls(Series([5, 0]), dtype=dtype),
              ]:
                  tm.assert_index_equal(idx, expected)
  
imports: import numpy
  import pytest
  import pandas
  from pandas import Index, Series
  import pandas._testing
label_desc: Use image node_id 3 for calling the TestIntNumericIndex obj's underlying member method code with example usage: obj.test_constructor(dtype) without return types