def test_parse_not_supported_yet():
with pytest.raises(NotImplementedError,
match='Custom gates not supported yet'):
_ = quirk_url_to_circuit(
'http://algassert.com/quirk#circuit={"cols": [[]], "gates": []}')
with pytest.raises(NotImplementedError,
match='initial states not supported yet'):
_ = quirk_url_to_circuit(
'http://algassert.com/quirk#circuit={"cols": [[]], "init": []}')
def test_parse_failures():
with pytest.raises(ValueError, match='must start with "circuit="'):
_ = quirk_url_to_circuit('http://algassert.com/quirk#bad')
with pytest.raises(json.JSONDecodeError):
_ = quirk_url_to_circuit('http://algassert.com/quirk#circuit=')
with pytest.raises(ValueError, match='top-level dictionary'):
_ = quirk_url_to_circuit('http://algassert.com/quirk#circuit=[]')
with pytest.raises(ValueError, match='"cols" entry'):
_ = quirk_url_to_circuit('http://algassert.com/quirk#circuit={}')
with pytest.raises(ValueError, match='cols must be a list'):
_ = quirk_url_to_circuit(
'http://algassert.com/quirk#circuit={"cols": 1}')
with pytest.raises(ValueError, match='col must be a list'):
_ = quirk_url_to_circuit(
'http://algassert.com/quirk#circuit={"cols": [0]}')
with pytest.raises(ValueError, match='Unrecognized column entry: 0'):
_ = quirk_url_to_circuit(
'http://algassert.com/quirk#circuit={"cols": [[0]]}')
with pytest.raises(ValueError, match='Unrecognized column entry: '):
_ = quirk_url_to_circuit(
'http://algassert.com/quirk#circuit={"cols": [["not a real"]]}')
with pytest.raises(ValueError, match='Unrecognized Circuit JSON keys'):
_ = quirk_url_to_circuit(
'http://algassert.com/quirk#circuit={"cols": [[]], "other": 1}')
def test_parse_simple_cases():
a, b = cirq.LineQubit.range(2)
assert quirk_url_to_circuit('http://algassert.com/quirk') == cirq.Circuit()
assert quirk_url_to_circuit('https://algassert.com/quirk') == cirq.Circuit()
assert quirk_url_to_circuit(
'https://algassert.com/quirk#') == cirq.Circuit()
assert quirk_url_to_circuit(
'http://algassert.com/quirk#circuit={"cols":[]}') == cirq.Circuit()
assert quirk_url_to_circuit(
'https://algassert.com/quirk#circuit={'
'%22cols%22:[[%22H%22],[%22%E2%80%A2%22,%22X%22]]'
'}') == cirq.Circuit(cirq.H(a),
cirq.X(b).controlled_by(a))
def test_custom_gate_parse_failures():
with pytest.raises(ValueError, match='must be a list'):
_ = quirk_url_to_circuit(
'https://algassert.com/quirk#circuit={"cols":[],'
'"gates":5}')
with pytest.raises(ValueError, match='gate json must be a dict'):
_ = quirk_url_to_circuit(
'https://algassert.com/quirk#circuit={"cols":[],'
'"gates":[5]}')
with pytest.raises(ValueError, match='Circuit JSON must be a dict'):
_ = quirk_url_to_circuit(
'https://algassert.com/quirk#circuit={"cols":[],'
'"gates":[{"id":"~a","circuit":5}]}')
with pytest.raises(ValueError, match='matrix json must be a string'):
_ = quirk_url_to_circuit(
'https://algassert.com/quirk#circuit={"cols":[],'
'"gates":[{"id":"~a","matrix":5}]}')
with pytest.raises(ValueError, match='Not surrounded by {{}}'):
_ = quirk_url_to_circuit(
'https://algassert.com/quirk#circuit={"cols":[],'
'"gates":[{"id":"~a","matrix":"abc"}]}')
with pytest.raises(ValueError, match='must have an id'):
_ = quirk_url_to_circuit(
'https://algassert.com/quirk#circuit={"cols":[],'
'"gates":['
'{"matrix":"{{1,0},{0,1}}"}'
']}')
with pytest.raises(ValueError, match='both a matrix and a circuit'):
_ = quirk_url_to_circuit(
'https://algassert.com/quirk#circuit={"cols":[],'
'"gates":['
'{"id":"~a","circuit":{"cols":[]},"matrix":"{{1,0},{0,1}}"}'
']}')
with pytest.raises(ValueError, match='matrix or a circuit'):
_ = quirk_url_to_circuit(
'https://algassert.com/quirk#circuit={"cols":[],'
'"gates":['
'{"id":"~a"}'
']}')
with pytest.raises(ValueError, match='duplicate identifier'):
_ = quirk_url_to_circuit(
'https://algassert.com/quirk#circuit={"cols":[],'
'"gates":['
'{"id":"~a","matrix":"{{1,0},{0,1}}"},'
'{"id":"~a","matrix":"{{1,0},{0,1}}"}]}')
def test_parse_failures(url, msg):
parsed_url = urllib.parse.urlparse(url)
data = json.loads(parsed_url.fragment[len('circuit='):])
with pytest.raises(ValueError, match=msg):
_ = quirk_url_to_circuit(url)
with pytest.raises(ValueError, match=msg):
_ = quirk_json_to_circuit(data)
def test_parse_with_qubits():
a = cirq.GridQubit(0, 0)
b = cirq.GridQubit(0, 1)
c = cirq.GridQubit(0, 2)
assert quirk_url_to_circuit(
'http://algassert.com/quirk#circuit={"cols":[["H"],["•","X"]]}',
qubits=cirq.GridQubit.rect(4, 4)) == cirq.Circuit(
cirq.H(a),
cirq.X(b).controlled_by(a))
assert quirk_url_to_circuit(
'http://algassert.com/quirk#circuit={"cols":[["H"],["•",1,"X"]]}',
qubits=cirq.GridQubit.rect(4, 4)) == cirq.Circuit(
cirq.H(a),
cirq.X(c).controlled_by(a))
with pytest.raises(IndexError, match="qubits specified"):
_ = quirk_url_to_circuit(
'http://algassert.com/quirk#circuit={"cols":[["H"],["•","X"]]}',
qubits=[cirq.GridQubit(0, 0)])
def test_input_cell():
assert_url_to_circuit_returns('{"cols":[["inputA4",1,1,1,"+=A4"]]}',
maps={
0x_0_0: 0x_0_0,
0x_2_3: 0x_2_5,
})
assert_url_to_circuit_returns(
'{"cols":[["inputA3",1,1,"inputB3",1,1,"+=AB3"]]}',
maps={
0o_0_0_0: 0o_0_0_0,
0o_2_3_1: 0o_2_3_7,
0o_1_1_0: 0o_1_1_1,
0o_4_4_0: 0o_4_4_0,
})
# Overlaps with effect.
with pytest.raises(ValueError, match='Overlapping registers'):
_ = quirk_url_to_circuit('https://algassert.com/quirk#circuit={"cols":['
'["+=A3","inputA3"]]}')
def test_set_default_input_cell():
# Later column.
assert_url_to_circuit_returns(
'{"cols":[[{"id":"setA","arg":11}],["+=A4"]]}',
maps={
0: 11,
4: 15,
5: 0,
})
# Same column.
assert_url_to_circuit_returns('{"cols":[["+=A4",{"id":"setA","arg":11}]]}',
maps={
0: 11,
4: 15,
5: 0,
})
# Overwrite.
assert_url_to_circuit_returns(
'{"cols":[[{"id":"setA","arg":0}],["+=A4",{"id":"setA","arg":11}]]}',
maps={
0: 11,
4: 15,
5: 0,
})
assert_url_to_circuit_returns(
'{"cols":[[{"id":"setA","arg":11}],["+=A4",{"id":"setA","arg":0}]]}',
maps={
0: 0,
4: 4,
5: 5,
})
# Different values over time.
assert_url_to_circuit_returns(
'{"cols":['
'[{"id":"setA","arg":1}],'
'["+=A4"],'
'[{"id":"setA","arg":4}],'
'["+=A4"]]}',
maps={
0: 5,
})
# Broadcast.
assert_url_to_circuit_returns(
'{"cols":['
'[{"id":"setA","arg":1}],'
'["+=A2",1,"+=A2"],'
'["+=A2",1,"+=A2"]]}',
maps={
0b_00_00: 0b_10_10,
0b_10_01: 0b_00_11,
})
# Too late.
with pytest.raises(ValueError, match='Missing input'):
_ = quirk_url_to_circuit(
'https://algassert.com/quirk#circuit={"cols":['
'["+=A2"],'
'[{"id":"setA","arg":1}]]}')
def test_missing_input_cell():
with pytest.raises(ValueError, match='Missing input'):
_ = quirk_url_to_circuit(
'https://algassert.com/quirk#circuit={"cols":['
'["+=A2"]]}')
def test_parse_url_failures(url, error_cls, msg):
with pytest.raises(error_cls, match=msg):
_ = quirk_url_to_circuit(url)
