code: def test_qasm_ex1_methodcalls():
      q = Qasm()
      q.qubit("q_0")
      q.qubit("q_1")
      q.h("q_0")
      q.cnot("q_0", "q_1")
      assert q.get_circuit() == CNOT(1, 0) * H(1)
  
file_path: sympy/sympy/physics/quantum/tests/test_qasm.py
imports: from sympy.physics.quantum.qasm import Qasm, flip_index, trim, get_index, nonblank, fullsplit, fixcommand, stripquotes, read_qasm
  from sympy.physics.quantum.gate import X, Z, H, S, T
  from sympy.physics.quantum.gate import CNOT, SWAP, CPHASE, CGate, CGateS
  from sympy.physics.quantum.circuitplot import Mz
label_desc: Use image node_id 3 for calling a global function with example usage: test_qasm_ex1_methodcalls() without return types