def test_layout_from_intlist_short(self):
"""If the intlist is longer that your quantum register, map them to None.
virtual physical
q1_0 -> 4
q2_0 -> 5
q2_1 -> 6
None -> 8
None -> 9
None -> 10
"""
qr1 = QuantumRegister(1, 'qr1')
qr2 = QuantumRegister(2, 'qr2')
intlist_layout = [4, 5, 6, 8, 9, 10]
layout = Layout.from_intlist(intlist_layout, qr1, qr2)
expected = Layout({
4: qr1[0],
5: qr2[0],
6: qr2[1],
8: None,
9: None,
10: None
})
self.assertDictEqual(layout._p2v, expected._p2v)
self.assertDictEqual(layout._v2p, expected._v2p)
def test_layout_from_intlist(self):
"""Create a layout from a list of integers.
virtual physical
q1_0 -> 4
q2_0 -> 5
q2_1 -> 6
q3_0 -> 8
q3_1 -> 9
q3_2 -> 10
"""
qr1 = QuantumRegister(1, 'qr1')
qr2 = QuantumRegister(2, 'qr2')
qr3 = QuantumRegister(3, 'qr3')
intlist_layout = [4, 5, 6, 8, 9, 10]
layout = Layout.from_intlist(intlist_layout, qr1, qr2, qr3)
expected = Layout({
4: qr1[0],
5: qr2[0],
6: qr2[1],
8: qr3[0],
9: qr3[1],
10: qr3[2]
})
self.assertDictEqual(layout._p2v, expected._p2v)
self.assertDictEqual(layout._v2p, expected._v2p)
def test_layout_from_intlist_duplicated(self):
"""If the intlist contains duplicated ints, fail.
virtual physical
q1_0 -> 4
q2_0 -> 6 -- This is
q2_1 -> 6 -- not allowed
"""
qr1 = QuantumRegister(1, 'qr1')
qr2 = QuantumRegister(2, 'qr2')
intlist_layout = [4, 6, 6]
with self.assertRaises(LayoutError):
_ = Layout.from_intlist(intlist_layout, qr1, qr2)
def test_layout_from_intlist_long(self):
"""If the intlist is shorter that your quantum register, fail.
virtual physical
q1_0 -> 4
q2_0 -> 5
q2_1 -> 6
q3_0 -> 8
q3_1 -> ?
q3_2 -> ?
"""
qr1 = QuantumRegister(1, 'qr1')
qr2 = QuantumRegister(2, 'qr2')
qr3 = QuantumRegister(3, 'qr3')
intlist_layout = [4, 5, 6, 8]
with self.assertRaises(LayoutError):
_ = Layout.from_intlist(intlist_layout, qr1, qr2, qr3)