code: def test_replace_mask_all_false_second_block(using_copy_on_write):
      df = DataFrame({"a": [1.5, 2, 3], "b": 100.5, "c": 1, "d": 2})
      df_orig = df.copy()
  
      df2 = df.replace(to_replace=1.5, value=55.5)
  
      if using_copy_on_write:
          # TODO: Block splitting would allow us to avoid copying b
          assert np.shares_memory(
              get_array(df, "c"), get_array(df2, "c")
          )
          assert not np.shares_memory(
              get_array(df, "a"), get_array(df2, "a")
          )
  
      else:
          assert not np.shares_memory(
              get_array(df, "c"), get_array(df2, "c")
          )
          assert not np.shares_memory(
              get_array(df, "a"), get_array(df2, "a")
          )
  
      df2.loc[0, "c"] = 1
      tm.assert_frame_equal(df, df_orig)  # Original is unchanged
  
      if using_copy_on_write:
          assert not np.shares_memory(
              get_array(df, "c"), get_array(df2, "c")
          )
  
imports: import numpy
  import pytest
  from pandas import Categorical, DataFrame, option_context
  import pandas._testing
  from pandas.tests.copy_view.util import get_array
label_desc: Use image node_id 5 for calling a global function with example usage: test_replace_mask_all_false_second_block(using_copy_on_write) without return types