code: def test_subplot_replace_projection():
      # plt.subplot() searches for axes with the same subplot spec, and if one
      # exists, and the kwargs match returns it, create a new one if they do not
      fig = plt.figure()
      ax = plt.subplot(1, 2, 1)
      ax1 = plt.subplot(1, 2, 1)
      ax2 = plt.subplot(1, 2, 2)
      ax3 = plt.subplot(1, 2, 1, projection="polar")
      ax4 = plt.subplot(1, 2, 1, projection="polar")
      assert ax is not None
      assert ax1 is ax
      assert ax2 is not ax
      assert ax3 is not ax
      assert ax3 is ax4
  
      assert ax in fig.axes
      assert ax2 in fig.axes
      assert ax3 in fig.axes
  
      assert ax.name == "rectilinear"
      assert ax2.name == "rectilinear"
      assert ax3.name == "polar"
  
imports: import difflib
  import numpy
  import sys
  from pathlib import Path
  import pytest
  import matplotlib
  from matplotlib.testing import subprocess_run_for_testing
  from matplotlib import pyplot
label_desc: Use image node_id 12 for calling a global function with example usage: test_subplot_replace_projection() without return types