def test_daggered_gate_hashable():
daggered_gate1 = _metagates.DaggeredGate(Y)
daggered_gate2 = _metagates.DaggeredGate(T)
d = {daggered_gate1: 1, daggered_gate2: 3}
assert len(d) == 2
# for efficiency reasons the following should be true:
assert hash(daggered_gate1) != hash(daggered_gate2)
def test_daggered_gate_tex_str():
daggered_gate = _metagates.DaggeredGate(Y)
str_Y = Y.tex_str() if hasattr(Y, 'tex_str') else str(Y)
assert daggered_gate.tex_str() == str_Y + r"${}^\dagger$"
# test for a gate with tex_str method
rx = Rx(0.5)
daggered_rx = _metagates.DaggeredGate(rx)
str_rx = rx.tex_str() if hasattr(rx, 'tex_str') else str(rx)
assert daggered_rx.tex_str() == str_rx + r"${}^\dagger$"
def test_daggered_gate_init():
# Choose gate which does not have an inverse gate:
not_invertible_gate = T
with pytest.raises(NotInvertible):
not_invertible_gate.get_inverse()
# Choose gate which does have an inverse defined:
invertible_gate = Y
assert invertible_gate.get_inverse() == Y
# Test init and matrix
dagger_inv = _metagates.DaggeredGate(not_invertible_gate)
assert dagger_inv._gate == not_invertible_gate
assert np.array_equal(dagger_inv.matrix, np.matrix([[1, 0], [0, cmath.exp(-1j * cmath.pi / 4)]]))
inv = _metagates.DaggeredGate(invertible_gate)
assert inv._gate == invertible_gate
assert np.array_equal(inv.matrix, np.matrix([[0, -1j], [1j, 0]]))
# Test matrix
no_matrix_gate = Entangle
with pytest.raises(AttributeError):
no_matrix_gate.matrix
inv_no_matrix_gate = _metagates.DaggeredGate(no_matrix_gate)
with pytest.raises(AttributeError):
inv_no_matrix_gate.matrix
def test_daggered_gate_comparison():
daggered_gate = _metagates.DaggeredGate(Y)
daggered_gate2 = _metagates.DaggeredGate(Y)
assert daggered_gate == daggered_gate2
def test_daggered_gate_get_inverse():
daggered_gate = _metagates.DaggeredGate(Y)
assert daggered_gate.get_inverse() == Y
def test_daggered_gate_str():
daggered_gate = _metagates.DaggeredGate(Y)
assert str(daggered_gate) == str(Y) + "^\dagger"
def test_daggered_gate_tex_str():
daggered_gate = _metagates.DaggeredGate(Y)
assert daggered_gate.tex_str() == str(Y) + "$^\dagger$"
