def test_qasm_nocache():
correct_qasm = qasm_prologue(1) + "\nx q[0];\ny q[0];\nz q[0];"
c = Circuit().x[0].y[0].z[0]
c.run()
c.to_qasm()
qasm = c.to_qasm()
assert qasm == correct_qasm
def test_switch_backend1():
c = Circuit().x[0].h[0]
assert np.array_equal(c.run(), c.run(backend="numpy"))
BlueqatGlobalSetting.set_default_backend("qasm_output")
assert c.run() == c.to_qasm()
# Different instance of QasmOutputBackend is used.
# Lhs is owned by Circuit, rhs is passed as argument. But in this case same result.
from blueqat.backends.qasm_output_backend import QasmOutputBackend
assert c.run(output_prologue=False) == c.run(False, backend=QasmOutputBackend())
BlueqatGlobalSetting.set_default_backend("numpy")
assert c.run(shots=5) == c.run_with_numpy(shots=5)
def test_qasm_noprologue2():
correct_qasm = "x q[0];\ny q[0];\nz q[0];"
c = Circuit().x[0].y[0].z[0]
qasm = c.to_qasm(False)
assert qasm == correct_qasm
