class_docstr: Test the handling of matrix-valued parameters.
docstr: Test matrices numbered but not included by default.
docstr_tok: ["Test","matrices","numbered","but","not","included","by","default","."]
code: def test_default_shows_matrix_parameters(self):
      """Test matrices numbered but not included by default."""
  
      expected = (
          "0: ─╭|Ψ⟩──U(M0)─┤  <𝓗(M0)>\n"
          "1: ─╰|Ψ⟩────────┤         \n"
          "M0 = \n[[1. 0.]\n [0. 1.]]"
      )
  
      assert tape_text(tape_matrices) == expected
  
imports: import pytest
  import pennylane
  from pennylane import numpy
  from pennylane.drawer import tape_text
  from pennylane.drawer.tape_text import _add_grouping_symbols, _add_cond_grouping_symbols, _add_mid_measure_grouping_symbols, _add_cwire_measurement_grouping_symbols, _add_cwire_measurement, _add_measurement, _add_op, _Config
  from pennylane.tape import QuantumScript, QuantumTape
label_desc: Use image node_id 1 for calling the TestShowMatrices obj's underlying member method code with example usage: obj.test_default_shows_matrix_parameters() without return types