def test_attrs_0(self):
ex = Executor(should_trace=True)
r = ex.execute(Con([1, 2, 3])[1:2])
self.assertEqual([2], r)
r = ex.execute(Con([1, 2, 3]).len)
self.assertEqual(3, r)
def test_err_0(self):
ex = Executor(should_trace=True)
try:
ex.execute(
Match(
Var('m'), Con(5),
Case(Eval(Var('m'), lambda m: m == 5),
Err('No matching branches found %s', Var('m')))))
except ExecError as e:
self.assertIsInstance(e.e, OpError)
self.assertEqual('No matching branches found 5', e.e.reason)
self.assertEqual(Loc.from_frame_idx(2).shift(-7), e.e.loc)
def test_fil_0(self):
ex = Executor(should_trace=True)
inp = [1, 2, 3]
r = ex.execute(Fil(
lambda b: b > 1,
Con(inp),
))
self.assertEqual([x for x in inp if x > 1], r)
def test_map_0(self):
ex = Executor(should_trace=True)
inp = [1, 2, 3]
r = ex.execute(Map(
lambda x: x * x,
Con(inp),
))
self.assertEqual([x * x for x in inp], r)
def test_fil_1(self):
ex = Executor(should_trace=True)
inp = [1, 2, 3]
r = ex.execute(Fil(
Var('x'),
Var('x') > Con(1),
Con(inp),
))
self.assertEqual([x for x in inp if x > 1], r)
def test_match_2(self):
ex = Executor()
r = ex.execute(
Match(
Var('x'),
Con(5),
Case(Eval(Var('x'), lambda x: x == 1), Con('a')),
Case(Eval(Var('x'), lambda x: x == 2), Con('b')),
Case(Eval(Var('x'), lambda x: x == 5), Con('c')),
))
self.assertEqual('c', r)
def test_fil_err_0(self):
ex = Executor(should_trace=True)
try:
r = ex.execute(Fil(
Var('x'),
Var('x') > Con(1),
Con(1),
))
except ExecError as e:
self.assertIsInstance(e.e, OpError)
self.assertEqual('Returned iterable `1` is not a list', e.e.reason)
self.assertEqual(Loc.from_frame_idx(2).shift(-10), e.e.loc)
def test_fil_02(self):
ex = Executor(should_trace=True)
inp = [1, 2, 3]
try:
r = ex.execute(Fil(
lambda b: lambda: True,
Con(inp),
))
except ExecError as e:
self.assertIsInstance(e.e, OpError)
self.assertEqual('`True` returned to Eval is not an Op',
e.e.reason)
self.assertEqual(Loc.from_frame_idx(2).shift(-6), e.e.loc)
def test_fun_0(self):
ex = Executor()
r = ex.execute(
With(
Var('fn'),
Fun(
Var('x'),
Var('y'),
Var('z'),
Eval(Var('x'), Var('y'), Var('z'),
lambda x, y, z: [x, y, z]),
), Call(Var('fn'), Con(5), Con(6), Con(7))))
self.assertEqual([5, 6, 7], r)
def test_iter_0(self):
last_items = []
def last_item_updater(x):
last_items.append(x)
return x
ex = Executor()
r = ex.execute(
Iter(
Var('x'),
Con(0),
Eval(Var('x'), lambda x: ((x, x + 1) if x < 5 else (x, None))),
Eval(Var('x'), last_item_updater),
))
self.assertEqual(4, r)
self.assertEqual([0, 1, 2, 3, 4], last_items)
def test_with(self):
ex = Executor()
r = ex.execute(With(Var('a'), Con(5), Eval(Var('a'), '5 + 1')))
self.assertEqual(6, r)