Static Analyzer for Solidity
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slither/tests/unit/slithir/vyper/test_ir_generation.py

99 lines
2.6 KiB

# # pylint: disable=too-many-lines
from slither.core.solidity_types import ElementaryType
from slither.slithir.operations import (
Phi,
InternalCall,
)
from slither.slithir.variables import (
Constant,
)
def test_interface_conversion_and_call_resolution(slither_from_vyper_source):
with slither_from_vyper_source(
"""
interface Test:
def foo() -> (int128, uint256): nonpayable
@internal
def foo() -> (int128, int128):
return 2, 3
@external
def bar():
a: int128 = 0
b: int128 = 0
(a, b) = self.foo()
x: address = 0x0000000000000000000000000000000000000000
c: uint256 = 0
a, c = Test(x).foo()
"""
) as sl:
interface = next(iter(x for x in sl.contracts if x.is_interface))
contract = next(iter(x for x in sl.contracts if not x.is_interface))
func = contract.get_function_from_signature("bar()")
(contract, function) = func.high_level_calls[0]
assert contract == interface
assert function.signature_str == "foo() returns(int128,uint256)"
def test_phi_entry_point_internal_call(slither_from_vyper_source):
with slither_from_vyper_source(
"""
counter: uint256
@internal
def b(y: uint256):
self.counter = y
@external
def a(x: uint256):
self.b(x)
self.b(1)
"""
) as sl:
f = sl.contracts[0].get_function_from_signature("b(uint256)")
assert (
len(
[
ssanode
for node in f.nodes
for ssanode in node.irs_ssa
if isinstance(ssanode, Phi)
]
)
== 1
)
def test_call_with_default_args(slither_from_vyper_source):
with slither_from_vyper_source(
"""
counter: uint256
@internal
def c(y: uint256, config: bool = True):
self.counter = y
@external
def a(x: uint256):
self.c(x)
self.c(1)
@external
def b(x: uint256):
self.c(x, False)
self.c(1, False)
"""
) as sl:
a = sl.contracts[0].get_function_from_signature("a(uint256)")
for node in a.nodes:
for op in node.irs_ssa:
if isinstance(op, InternalCall) and op.function.name == "c":
assert len(op.arguments) == 2
assert op.arguments[1] == Constant("True", ElementaryType("bool"))
b = sl.contracts[0].get_function_from_signature("b(uint256)")
for node in b.nodes:
for op in node.irs_ssa:
if isinstance(op, InternalCall) and op.function.name == "c":
assert len(op.arguments) == 2
assert op.arguments[1] == Constant("False", ElementaryType("bool"))