code: def test_operator_overloading():
      v1 = m.Vector2(1, 2)
      v2 = m.Vector(3, -1)
      v3 = m.Vector2(1, 2)  # Same value as v1, but different instance.
      assert v1 is not v3
  
      assert str(v1) == "[1.000000, 2.000000]"
      assert str(v2) == "[3.000000, -1.000000]"
  
      assert str(-v2) == "[-3.000000, 1.000000]"
  
      assert str(v1 + v2) == "[4.000000, 1.000000]"
      assert str(v1 - v2) == "[-2.000000, 3.000000]"
      assert str(v1 - 8) == "[-7.000000, -6.000000]"
      assert str(v1 + 8) == "[9.000000, 10.000000]"
      assert str(v1 * 8) == "[8.000000, 16.000000]"
      assert str(v1 / 8) == "[0.125000, 0.250000]"
      assert str(8 - v1) == "[7.000000, 6.000000]"
      assert str(8 + v1) == "[9.000000, 10.000000]"
      assert str(8 * v1) == "[8.000000, 16.000000]"
      assert str(8 / v1) == "[8.000000, 4.000000]"
      assert str(v1 * v2) == "[3.000000, -2.000000]"
      assert str(v2 / v1) == "[3.000000, -0.500000]"
  
      assert v1 == v3
      assert v1 != v2
      assert hash(v1) == 4
      # TODO(eric.cousineau): Make this work.
      # assert abs(v1) == "abs(Vector2)"
  
      v1 += 2 * v2
      assert str(v1) == "[7.000000, 0.000000]"
      v1 -= v2
      assert str(v1) == "[4.000000, 1.000000]"
      v1 *= 2
      assert str(v1) == "[8.000000, 2.000000]"
      v1 /= 16
      assert str(v1) == "[0.500000, 0.125000]"
      v1 *= v2
      assert str(v1) == "[1.500000, -0.125000]"
      v2 /= v1
      assert str(v2) == "[2.000000, 8.000000]"
  
      cstats = ConstructorStats.get(m.Vector2)
      assert cstats.alive() == 3
      del v1
      assert cstats.alive() == 2
      del v2
      assert cstats.alive() == 1
      del v3
      assert cstats.alive() == 0
      assert cstats.values() == [
          "[1.000000, 2.000000]",
          "[3.000000, -1.000000]",
          "[1.000000, 2.000000]",
          "[-3.000000, 1.000000]",
          "[4.000000, 1.000000]",
          "[-2.000000, 3.000000]",
          "[-7.000000, -6.000000]",
          "[9.000000, 10.000000]",
          "[8.000000, 16.000000]",
          "[0.125000, 0.250000]",
          "[7.000000, 6.000000]",
          "[9.000000, 10.000000]",
          "[8.000000, 16.000000]",
          "[8.000000, 4.000000]",
          "[3.000000, -2.000000]",
          "[3.000000, -0.500000]",
          "[6.000000, -2.000000]",
      ]
      assert cstats.default_constructions == 0
      assert cstats.copy_constructions == 0
      assert cstats.move_constructions >= 10
      assert cstats.copy_assignments == 0
      assert cstats.move_assignments == 0
  
file_path: coremltools/deps/pybind11/tests/test_operator_overloading.py
imports: import pytest
  from pybind11_tests import ConstructorStats
  from pybind11_tests import operators
label_desc: Use image node_id 1 for calling a global function with example usage: test_operator_overloading() without return types