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testGateStrings.py
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/
testGateStrings.py
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import unittest
import pygsti
import numpy as np
class GateStringTestCase(unittest.TestCase):
def setUp(self):
pass
class TestGateStringMethods(GateStringTestCase):
def test_simple(self):
#The workhorse function is pygsti.construction.create_gatestring_list, which executes its positional arguments within a nested
# loop given by iterable keyword arguments. That's a mouthful, so let's look at a few examples:
As = [('a1',),('a2',)]
Bs = [('b1',), ('b2',)]
def rep2(x):
return x+x
def asserter(x):
assert(False)
def samestr(x):
return "Gx" #to test string processing
def sametup(x):
return "Gx" #to test string processing
list0 = pygsti.construction.create_gatestring_list("")
list1 = pygsti.construction.create_gatestring_list("a", a=As)
list2 = pygsti.construction.create_gatestring_list("a+b", a=As, b=Bs, order=['a','b'])
list3 = pygsti.construction.create_gatestring_list("a+b", a=As, b=Bs, order=['b','a'])
list4 = pygsti.construction.create_gatestring_list("R(a)+c", a=As, c=[('c',)], R=rep2, order=['a','c'])
list5 = pygsti.construction.create_gatestring_list("Ast(a)", a=As, Ast=asserter)
list6 = pygsti.construction.create_gatestring_list("SS(a)", a=As, SS=samestr)
list7 = pygsti.construction.gatestring_list(list1)
self.assertEqual(list0, pygsti.construction.gatestring_list([ () ] )) #special case: get the empty gate string
self.assertEqual(list1, pygsti.construction.gatestring_list(As))
self.assertEqual(list2, pygsti.construction.gatestring_list([('a1','b1'),('a1','b2'),('a2','b1'),('a2','b2')]))
self.assertEqual(list3, pygsti.construction.gatestring_list([('a1','b1'),('a2','b1'),('a1','b2'),('a2','b2')]))
self.assertEqual(list4, pygsti.construction.gatestring_list([('a1','a1','c'),('a2','a2','c')]))
self.assertEqual(list5, []) # failed assertions cause item to be skipped
self.assertEqual(list6, pygsti.construction.gatestring_list([('Gx',), ('Gx',)])) #strs => parser => GateStrings
self.assertEqual(list7, list1)
with self.assertRaises(ValueError):
pygsti.construction.gatestring_list( [ {'foo': "Bar"} ] ) #cannot convert dicts to GateStrings...
def test_truncate_methods(self):
self.assertEqual( pygsti.construction.repeat_and_truncate(('A','B','C'),5), ('A','B','C','A','B'))
self.assertEqual( pygsti.construction.repeat_with_max_length(('A','B','C'),5), ('A','B','C'))
self.assertEqual( pygsti.construction.repeat_count_with_max_length(('A','B','C'),5), 1)
def test_fiducials_germs(self):
fids = pygsti.construction.gatestring_list( [ ('Gf0',), ('Gf1',) ] )
germs = pygsti.construction.gatestring_list( [ ('G0',), ('G1a','G1b')] )
gateStrings1 = pygsti.construction.create_gatestring_list("f0+germ*e+f1", f0=fids, f1=fids,
germ=germs, e=2, order=["germ","f0","f1"])
expected1 = ["Gf0(G0)^2Gf0",
"Gf0(G0)^2Gf1",
"Gf1(G0)^2Gf0",
"Gf1(G0)^2Gf1",
"Gf0(G1aG1b)^2Gf0",
"Gf0(G1aG1b)^2Gf1",
"Gf1(G1aG1b)^2Gf0",
"Gf1(G1aG1b)^2Gf1" ]
self.assertEqual( map(str,gateStrings1), expected1 )
gateStrings2 = pygsti.construction.create_gatestring_list("f0+T(germ,N)+f1", f0=fids, f1=fids,
germ=germs, N=3, T=pygsti.construction.repeat_and_truncate,
order=["germ","f0","f1"])
expected2 = ["Gf0G0G0G0Gf0",
"Gf0G0G0G0Gf1",
"Gf1G0G0G0Gf0",
"Gf1G0G0G0Gf1",
"Gf0G1aG1bG1aGf0",
"Gf0G1aG1bG1aGf1",
"Gf1G1aG1bG1aGf0",
"Gf1G1aG1bG1aGf1" ]
self.assertEqual( map(str,gateStrings2), expected2 )
gateStrings3 = pygsti.construction.create_gatestring_list("f0+T(germ,N)+f1", f0=fids, f1=fids,
germ=germs, N=3,
T=pygsti.construction.repeat_with_max_length,
order=["germ","f0","f1"])
expected3 = [ "Gf0(G0)^3Gf0",
"Gf0(G0)^3Gf1",
"Gf1(G0)^3Gf0",
"Gf1(G0)^3Gf1",
"Gf0(G1aG1b)Gf0",
"Gf0(G1aG1b)Gf1",
"Gf1(G1aG1b)Gf0",
"Gf1(G1aG1b)Gf1" ]
self.assertEqual( map(str,gateStrings3), expected3 )
def test_string_compression(self):
gs = pygsti.objects.GateString(None, stringRepresentation="Gx^100")
comp_gs = pygsti.obj.dataset.compress_gate_label_tuple(tuple(gs))
exp_gs = pygsti.obj.dataset.expand_gate_label_tuple(comp_gs)
self.assertEqual(tuple(gs), exp_gs)
def test_repeat(self):
gs = pygsti.objects.GateString( ('Gx','Gx','Gy') )
gs2 = pygsti.construction.repeat(gs, 2)
self.assertEqual( gs2, pygsti.obj.GateString( ('Gx','Gx','Gy','Gx','Gx','Gy') ))
gs3 = pygsti.construction.repeat_with_max_length(gs, 7)
self.assertEqual( gs3, pygsti.obj.GateString( ('Gx','Gx','Gy','Gx','Gx','Gy') ))
gs4 = pygsti.construction.repeat_and_truncate(gs, 4)
self.assertEqual( gs4, pygsti.obj.GateString( ('Gx','Gx','Gy','Gx') ))
gs5 = pygsti.construction.repeat_remainder_for_truncation(gs, 4)
self.assertEqual( gs5, pygsti.obj.GateString( ('Gx',) ))
def test_simplify(self):
s = "{}Gx^1Gy{}Gz^1"
self.assertEqual( pygsti.construction.simplify_str(s), "GxGyGz" )
s = "{}Gx^1(Gy)^2{}Gz^1"
self.assertEqual( pygsti.construction.simplify_str(s), "Gx(Gy)^2Gz" )
s = "{}{}^1{}"
self.assertEqual( pygsti.construction.simplify_str(s), "{}" )
def test_lists(self):
expected_allStrs = set( pygsti.construction.gatestring_list(
[(),('Gx',),('Gy',),('Gx','Gx'),('Gx','Gy'),('Gy','Gx'),('Gy','Gy')] ))
allStrs = pygsti.construction.list_all_gatestrings( ('Gx','Gy'), 0,2 )
self.assertEqual( set(allStrs), expected_allStrs)
allStrs = list(pygsti.construction.gen_all_gatestrings( ('Gx','Gy'), 0,2 ))
#self.assertEqual( set(allStrs), set([(),('Gx',),('Gy',),('Gx','Gx'),('Gx','Gy'),('Gy','Gx'),('Gy','Gy')]))
#self.assertEqual( set(allStrs), set([(),('Gx',),('Gy',),('Gx','Gy'),('Gy','Gx')]))
randStrs = pygsti.construction.list_random_gatestrings_onelen( ('Gx','Gy','Gz'), 2, 3)
self.assertEqual( len(randStrs), 3 )
self.assertTrue( all( [len(s)==2 for s in randStrs] ) )
partialStrs = pygsti.construction.list_partial_strings( ('G1','G2','G3') )
self.assertEqual( partialStrs, [ (), ('G1',), ('G1','G2'), ('G1','G2','G3') ] )
def test_python_string_conversion(self):
gs = pygsti.obj.GateString(None, stringRepresentation="Gx^3Gy^2GxGz")
pystr = gs.to_pythonstr( ('Gx','Gy','Gz') )
self.assertEqual( pystr, "AAABBAC" )
gs2_tup = pygsti.obj.GateString.from_pythonstr( pystr, ('Gx','Gy','Gz') )
self.assertEqual( gs2_tup, tuple(gs) )
def test_std_lists(self):
gateLabels = ['Gx','Gy']
strs = pygsti.construction.gatestring_list( [('Gx',),('Gy',),('Gx','Gx')] )
germs = pygsti.construction.gatestring_list( [('Gx','Gy'),('Gy','Gy')] )
# LSGST
maxLens = [0,1,2]
lsgstLists = pygsti.construction.make_lsgst_lists_asymmetric_fids(
gateLabels, strs, strs, germs, maxLens, rhoEPairs=None, truncScheme="whole germ powers")
lsgstLists2 = pygsti.construction.make_lsgst_lists_asymmetric_fids(
gateLabels, strs, strs, germs, maxLens, rhoEPairs=None, truncScheme="truncated germ powers")
lsgstLists3 = pygsti.construction.make_lsgst_lists_asymmetric_fids(
gateLabels, strs, strs, germs, maxLens, rhoEPairs=None, truncScheme="length as exponent")
maxLens = [1,2]
lsgstLists4 = pygsti.construction.make_lsgst_lists_asymmetric_fids(
gateLabels, strs, strs, germs, maxLens, rhoEPairs=None, truncScheme="whole germ powers")
# ELGST
maxLens = [0,1,2]
elgstLists = pygsti.construction.make_elgst_lists(
gateLabels, germs, maxLens, truncScheme="whole germ powers")
maxLens = [1,2]
elgstLists2 = pygsti.construction.make_elgst_lists(
gateLabels, germs, maxLens, truncScheme="whole germ powers")
#TODO: check values here
def test_gatestring_object(self):
s1 = pygsti.obj.GateString( ('Gx','Gx'), "Gx^2" )
s2 = pygsti.obj.GateString( s1, "Gx^2" )
s3 = s1 + s2
s4 = s1**3
s5 = s4
self.assertEqual( s1, ('Gx','Gx') )
self.assertEqual( s2, ('Gx','Gx') )
self.assertEqual( s3, ('Gx','Gx','Gx','Gx') )
self.assertEqual( s4, ('Gx','Gx','Gx','Gx','Gx','Gx') )
self.assertEqual( s5, s4 )
b1 = s1 < s2
b2 = s1 > s2
with self.assertRaises(ValueError):
s1[0] = 'Gx' #cannot set items - like a tuple they're read-only
with self.assertRaises(ValueError):
bad = s1 + ("Gx",) #can't add non-GateString to gatestring
with self.assertRaises(ValueError):
pygsti.obj.GateString( ('Gx','Gx'), "GxGy" ) #mismatch
with self.assertRaises(ValueError):
pygsti.obj.GateString( None )
w1 = pygsti.obj.WeightedGateString( ('Gx','Gy'), "GxGy", weight=0.5)
w2 = pygsti.obj.WeightedGateString( ('Gy',), "Gy", weight=0.5)
w3 = w1 + w2
w4 = w2**2
w5 = s1 + w2
w6 = w2 + s1
w1_str = str(w1)
x = w1[0]
x2 = w1[0:2]
self.assertEqual( w1, ('Gx','Gy') ); self.assertEqual(w1.weight, 0.5)
self.assertEqual( w2, ('Gy',) ); self.assertEqual(w2.weight, 0.5)
self.assertEqual( w3, ('Gx','Gy','Gy') ); self.assertEqual(w3.weight, 1.0)
self.assertEqual( w4, ('Gy','Gy') ); self.assertEqual(w4.weight, 0.5)
self.assertEqual( w5, ('Gx','Gx','Gy') ); self.assertEqual(w5.weight, 0.5)
self.assertEqual( w6, ('Gy','Gx','Gx') ); self.assertEqual(w6.weight, 0.5)
self.assertEqual( x, 'Gx' )
self.assertEqual( x2, ('Gx','Gy') )
if __name__ == "__main__":
unittest.main(verbosity=2)