docstr: Test that the counts function outputs counts of the right size
docstr_tok: ["Test","that","the","counts","function","outputs","counts","of","the","right","size"]
code: def test_counts_dimension(self, mocker):
      """Test that the counts function outputs counts of the right size"""
      n_sample = 10
  
      dev = qml.device("default.qubit.legacy", wires=2, shots=n_sample)
      spy = mocker.spy(qml.QubitDevice, "sample")
  
      @qml.qnode(dev)
      def circuit():
          qml.RX(0.54, wires=0)
          return qml.counts(qml.PauliZ(0)), qml.counts(qml.PauliX(1))
  
      sample = circuit()
  
      assert len(sample) == 2
      assert np.all([sum(s.values()) == n_sample for s in sample])
  
      custom_measurement_process(dev, spy)
  
imports: import numpy
  import pytest
  import pennylane
  from pennylane.measurements import Counts
  from pennylane.operation import Operator
label_desc: Use image node_id 1 for calling the TestCountsIntegration obj's underlying member method code with example usage: obj.test_counts_dimension(mocker) and returns: qml,  qml