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Static Analyzer for Solidity
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slither/tests/test_ast_parsing.py

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import json
import os
import re
import sys
from pathlib import Path
from typing import List, Dict, Tuple
import pytest
from deepdiff import DeepDiff
from solc_select.solc_select import install_artifacts as install_solc_versions
from solc_select.solc_select import installed_versions as get_installed_solc_versions
from crytic_compile import CryticCompile, save_to_zip
from crytic_compile.utils.zip import load_from_zip
from slither import Slither
from slither.printers.guidance.echidna import Echidna
SLITHER_ROOT = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
TEST_ROOT = os.path.join(SLITHER_ROOT, "tests", "ast-parsing")
# pylint: disable=too-few-public-methods
class Test:
def __init__(self, test_file: str, solc_versions: List[str], disable_legacy: bool = False):
self.solc_versions = solc_versions
self.test_file = test_file
self.disable_legacy = disable_legacy
versions_with_flavors: List[Tuple[str, str]] = []
flavors = ["compact"]
if not self.disable_legacy:
flavors += ["legacy"]
for version in solc_versions:
for flavor in flavors:
if flavor == "legacy" and version > "0.8":
# No legacy for >0.8
continue
versions_with_flavors.append((version, flavor))
self.versions_with_flavors = versions_with_flavors
def generate_output(sl: Slither) -> Dict[str, Dict[str, str]]:
output = {}
for contract in sl.contracts:
output[contract.name] = {}
for func_or_modifier in contract.functions + contract.modifiers:
output[contract.name][
func_or_modifier.full_name
] = func_or_modifier.slithir_cfg_to_dot_str(skip_expressions=True)
return output
def make_version(minor: int, patch_min: int, patch_max: int) -> List[str]:
return [f"0.{minor}.{x}" for x in range(patch_min, patch_max + 1)]
VERSIONS_04 = make_version(4, 0, 26)
VERSIONS_05 = make_version(5, 0, 17)
VERSIONS_06 = make_version(6, 0, 12)
VERSIONS_07 = make_version(7, 0, 6)
VERSIONS_08 = make_version(8, 0, 15)
ALL_VERSIONS = VERSIONS_04 + VERSIONS_05 + VERSIONS_06 + VERSIONS_07 + VERSIONS_08
ALL_TESTS = [
Test("using-for-0.4.0.sol", ["0.4.0"]),
Test(
"using-for-0.4.1.sol",
make_version(4, 1, 26) + VERSIONS_05 + VERSIONS_06 + VERSIONS_07 + VERSIONS_08,
),
Test(
"top-level-import-0.4.0.sol",
VERSIONS_04 + VERSIONS_05 + VERSIONS_06 + ["0.7.0"],
),
Test("top-level-import-0.7.1.sol", make_version(7, 1, 6) + VERSIONS_08),
Test("function-0.4.0.sol", make_version(4, 0, 15)),
Test("function-0.4.16.sol", make_version(4, 16, 21)),
Test("function-0.4.22.sol", ["0.4.22"]),
Test("function-0.4.23.sol", make_version(4, 23, 26)),
Test("function-0.5.0.sol", VERSIONS_05),
# TODO: legacy is failing
Test("function-0.6.0.sol", VERSIONS_06, disable_legacy=True),
# TODO: failing
# Test("function-0.7.0.sol", ["0.7.0"]),
# TODO: legacy failing with 0.7
Test("function-0.7.1.sol", make_version(7, 1, 6), disable_legacy=True),
Test("function-0.7.1.sol", VERSIONS_08),
Test(
"top-level-import-bis-0.4.0.sol",
VERSIONS_04 + VERSIONS_05 + VERSIONS_06 + ["0.7.0"],
),
Test("top-level-import-bis-0.7.1.sol", make_version(7, 1, 6) + VERSIONS_08),
# TODO: failing
# Test(
# "variabledeclaration-0.4.0.sol",
# make_version(4, 0, 23),
# disable_legacy=True,
# ),
# # TODO: failing
# Test(
# "variabledeclaration-0.4.24.sol",
# make_version(4, 24, 26),
# disable_legacy=True,
# ),
Test(
"variabledeclaration-0.5.0.sol",
VERSIONS_05 + VERSIONS_06 + VERSIONS_07 + VERSIONS_08,
disable_legacy=True,
),
Test("functioncall-0.4.0.sol", VERSIONS_04),
Test(
"functioncall-0.4.5.sol",
make_version(4, 5, 9),
),
Test(
"functioncall-0.5.0.sol",
make_version(5, 0, 2),
),
Test(
"functioncall-0.5.3.sol",
make_version(5, 3, 17),
),
Test(
"functioncall-0.6.0.sol",
make_version(6, 0, 1),
),
Test(
"functioncall-0.6.2.sol",
make_version(6, 2, 7),
),
Test(
"functioncall-0.6.8.sol",
make_version(6, 8, 12),
),
Test(
"functioncall-0.7.0.sol",
VERSIONS_07,
),
Test(
"functioncall-0.8.0.sol",
VERSIONS_08,
),
Test(
"break-all.sol",
ALL_VERSIONS,
),
Test(
"top-level-nested-import-0.4.0.sol",
VERSIONS_04 + VERSIONS_05 + VERSIONS_06 + ["0.7.0"],
),
Test(
"top-level-nested-import-0.7.1.sol",
make_version(7, 1, 6) + VERSIONS_08,
),
# + [f"variable_0.6.{ver}_legacy" for ver in range(5, 23)]
# + [f"variable_0.6.{ver}_compact" for ver in range(5, 23)]
# + [f"variable_0.7.{ver}_legacy" for ver in range(0, 2)]
# + [f"variable_0.7.{ver}_compact" for ver in range(0, 2)]
Test(
"call_to_variable-all.sol",
ALL_VERSIONS,
),
Test("yul-0.4.0.sol", ["0.4.0"]),
Test("yul-0.4.1.sol", make_version(4, 1, 10)),
Test(
"yul-0.4.11.sol",
make_version(4, 11, 26) + VERSIONS_05 + VERSIONS_06,
),
Test("yul-0.7.0.sol", make_version(7, 0, 4)),
Test("yul-0.7.5.sol", make_version(7, 5, 6)),
Test("yul-0.8.0.sol", VERSIONS_08),
Test("pragma-0.4.0.sol", VERSIONS_04),
Test("pragma-0.5.0.sol", VERSIONS_05),
Test("pragma-0.6.0.sol", VERSIONS_06),
Test("pragma-0.7.0.sol", VERSIONS_07),
Test("pragma-0.8.0.sol", VERSIONS_08),
Test(
"assembly-all.sol",
ALL_VERSIONS,
),
Test("struct-0.4.0.sol", VERSIONS_04 + VERSIONS_05),
# TODO: legacy failing
Test(
"struct-0.6.0.sol",
VERSIONS_06 + VERSIONS_07 + VERSIONS_08,
disable_legacy=True,
),
# TODO: currently failing
# Test("emit-0.4.0.sol", VERSIONS_04),
# Test(
# "emit-0.4.8.sol",
# make_version(4, 8, 20)
# ),
# Test(
# "emit-0.4.21.sol",
# make_version(4, 21, 26)
# ),
Test(
"emit-0.5.0.sol",
VERSIONS_05 + VERSIONS_06 + VERSIONS_07 + VERSIONS_08,
),
# TODO: failing
# Test("import-0.4.0.sol", VERSIONS_04),
# Test(
# "import-0.4.3.sol",
# make_version(4, 3, 9) + VERSIONS_05 + VERSIONS_06 + VERSIONS_07 + VERSIONS_08,
# ),
Test("tupleexpression-0.4.0.sol", make_version(4, 0, 23)),
Test("tupleexpression-0.4.24.sol", make_version(4, 24, 26) + VERSIONS_05),
Test(
"tupleexpression-0.5.3.sol",
make_version(5, 3, 9) + VERSIONS_06 + VERSIONS_07 + VERSIONS_08,
),
Test("literal-0.4.0.sol", make_version(4, 0, 9)),
Test("literal-0.4.10.sol", make_version(4, 10, 26)),
Test("literal-0.5.0.sol", VERSIONS_05),
Test("literal-0.6.0.sol", VERSIONS_06),
# TODO: failing
# Test("literal-0.7.0.sol", VERSIONS_07 + VERSIONS_08),
Test("memberaccess-0.4.0.sol", VERSIONS_04 + VERSIONS_05),
Test(
"memberaccess-0.5.3.sol",
make_version(5, 3, 9),
),
# TODO: Legacy failing from 0.6
Test(
"memberaccess-0.5.3.sol",
VERSIONS_06 + VERSIONS_07 + VERSIONS_08,
disable_legacy=True,
),
Test("throw-0.4.0.sol", VERSIONS_04),
Test(
"throw-0.5.0.sol",
VERSIONS_05 + VERSIONS_06 + VERSIONS_07 + VERSIONS_08,
),
Test(
"top_level_variable2-0.4.0.sol",
VERSIONS_04 + VERSIONS_05 + VERSIONS_06 + VERSIONS_07,
),
Test("top_level_variable2-0.8.0.sol", VERSIONS_08),
Test(
"comment-all.sol",
ALL_VERSIONS,
),
Test("assignment-0.4.0.sol", VERSIONS_04),
Test(
"assignment-0.4.7.sol",
make_version(4, 7, 9) + VERSIONS_05 + VERSIONS_06 + VERSIONS_07 + VERSIONS_08,
),
Test(
"event-all.sol",
ALL_VERSIONS,
),
# TODO: legacy not working
Test(
"indexrangeaccess-0.4.0.sol",
VERSIONS_04 + VERSIONS_05 + ["0.6.0"],
),
Test("indexrangeaccess-0.4.0.sol", ["0.6.0"], disable_legacy=True),
Test(
"indexrangeaccess-0.6.1.sol",
make_version(6, 1, 12) + VERSIONS_07 + VERSIONS_08,
disable_legacy=True,
),
Test("variable-0.4.0.sol", VERSIONS_04),
Test("variable-0.4.5.sol", make_version(4, 5, 13)),
Test("variable-0.4.14.sol", make_version(4, 14, 15)),
Test("variable-0.4.16.sol", make_version(4, 16, 26)),
Test("variable-0.5.0.sol", VERSIONS_05 + make_version(6, 0, 4)),
Test("variable-0.6.5.sol", make_version(6, 5, 8)),
Test("variable-0.6.9.sol", make_version(6, 9, 12) + VERSIONS_07),
Test("variable-0.8.0.sol", VERSIONS_08),
Test(
"continue-all.sol",
ALL_VERSIONS,
),
Test(
"if-all.sol",
ALL_VERSIONS,
),
Test(
"modifier-all.sol",
VERSIONS_04 + VERSIONS_05 + VERSIONS_06,
),
Test(
"modifier-0.7.0.sol",
VERSIONS_07 + VERSIONS_08,
),
Test("library_implicit_conversion-0.4.0.sol", VERSIONS_04),
Test(
"library_implicit_conversion-0.5.0.sol",
VERSIONS_05 + VERSIONS_06 + VERSIONS_07 + VERSIONS_08,
),
Test("units_and_global_variables-0.4.0.sol", VERSIONS_04),
Test("units_and_global_variables-0.5.0.sol", make_version(5, 0, 3)),
Test("units_and_global_variables-0.5.4.sol", make_version(5, 4, 17)),
Test("units_and_global_variables-0.6.0.sol", VERSIONS_06),
Test("units_and_global_variables-0.7.0.sol", VERSIONS_07),
Test("units_and_global_variables-0.8.0.sol", VERSIONS_08),
Test("units_and_global_variables-0.8.4.sol", make_version(8, 4, 6)),
Test("units_and_global_variables-0.8.7.sol", make_version(8, 7, 9)),
Test(
"push-all.sol",
ALL_VERSIONS,
),
Test(
"indexaccess-all.sol",
ALL_VERSIONS,
),
Test("minmax-0.4.0.sol", VERSIONS_04 + VERSIONS_05 + VERSIONS_06),
Test(
"minmax-0.6.8.sol",
make_version(6, 8, 9) + VERSIONS_07 + VERSIONS_08,
),
Test(
"minmax-0.8.8.sol",
make_version(8, 8, 15),
),
Test("dowhile-0.4.0.sol", VERSIONS_04),
Test(
"dowhile-0.4.5.sol",
make_version(4, 5, 9) + VERSIONS_05 + VERSIONS_06 + VERSIONS_07 + VERSIONS_08,
),
Test(
"custom_error-0.4.0.sol",
ALL_VERSIONS,
),
Test("custom_error-0.8.4.sol", make_version(8, 4, 15)),
Test(
"top-level-0.4.0.sol",
VERSIONS_04 + VERSIONS_05 + VERSIONS_06 + ["0.7.0"],
),
Test("top-level-0.7.1.sol", make_version(7, 1, 3)),
Test("top-level-0.7.4.sol", make_version(7, 4, 6) + VERSIONS_08),
Test("contract-0.4.0.sol", make_version(4, 0, 21)),
Test("contract-0.4.22.sol", make_version(4, 22, 26) + VERSIONS_05),
Test("contract-0.6.0.sol", VERSIONS_06 + VERSIONS_07 + VERSIONS_08),
Test(
"import_interface_with_struct_from_top_level-0.4.0.sol",
VERSIONS_04 + VERSIONS_05 + VERSIONS_06 + make_version(7, 0, 5),
),
Test(
"import_interface_with_struct_from_top_level-0.7.6.sol",
["0.7.6"] + VERSIONS_08,
),
Test("scope-0.4.0.sol", VERSIONS_04),
Test(
"scope-0.5.0.sol",
VERSIONS_05 + VERSIONS_06 + VERSIONS_07 + VERSIONS_08,
),
Test(
"conditional-all.sol",
ALL_VERSIONS,
),
Test(
"for-all.sol",
ALL_VERSIONS,
),
Test("trycatch-0.4.0.sol", VERSIONS_04 + VERSIONS_05),
# TODO: legacy failing
Test(
"trycatch-0.6.0.sol",
VERSIONS_06 + VERSIONS_07 + VERSIONS_08,
disable_legacy=True,
),
Test(
"unchecked-0.4.0.sol",
VERSIONS_04 + VERSIONS_05 + VERSIONS_06 + VERSIONS_07,
),
Test("unchecked-0.8.0.sol", VERSIONS_08),
Test(
"return-all.sol",
ALL_VERSIONS,
),
Test("binaryoperation-0.4.0.sol", VERSIONS_04),
Test(
"binaryoperation-0.4.7.sol",
make_version(4, 7, 9) + VERSIONS_05 + VERSIONS_06 + VERSIONS_07 + make_version(8, 0, 12),
),
Test("newexpression-0.4.0.sol", VERSIONS_04),
Test(
"newexpression-0.5.0.sol",
VERSIONS_05 + VERSIONS_06 + VERSIONS_07 + VERSIONS_08,
),
Test(
"enum-0.4.0.sol",
VERSIONS_04 + VERSIONS_05 + VERSIONS_06 + VERSIONS_07,
),
Test("enum-0.8.0.sol", VERSIONS_08),
Test(
"top_level_variable-0.4.0.sol",
VERSIONS_04 + VERSIONS_05 + VERSIONS_06 + VERSIONS_07,
),
Test("top_level_variable-0.8.0.sol", VERSIONS_08),
Test("unaryexpression-0.4.0.sol", VERSIONS_04),
Test(
"unaryexpression-0.5.0.sol",
VERSIONS_05 + VERSIONS_06 + VERSIONS_07 + VERSIONS_08,
),
Test(
"while-all.sol",
ALL_VERSIONS,
),
Test(
"complex_imports/import_free/Caller.sol",
["0.8.2"],
),
Test("custom_error_with_state_variable.sol", make_version(8, 4, 12)),
Test("complex_imports/import_aliases/test.sol", VERSIONS_08),
# 0.8.9 crashes on our testcase
Test(
"user_defined_value_type/user_defined_types-0.8.8.sol", ["0.8.8"] + make_version(8, 10, 15)
),
Test("user_defined_value_type/argument-0.8.8.sol", ["0.8.8"] + make_version(8, 10, 15)),
Test("user_defined_value_type/calldata-0.8.8.sol", ["0.8.8"] + make_version(8, 10, 15)),
Test("user_defined_value_type/constant-0.8.8.sol", ["0.8.8"] + make_version(8, 10, 15)),
Test("user_defined_value_type/erc20-0.8.8.sol", ["0.8.8"] + make_version(8, 10, 15)),
Test("user_defined_value_type/in_parenthesis-0.8.8.sol", ["0.8.8"] + make_version(8, 10, 15)),
Test("bytes_call.sol", ["0.8.12"]),
Test("modifier_identifier_path.sol", VERSIONS_08),
Test("free_functions/libraries_from_free.sol", ["0.8.12"]),
Test("free_functions/new_operator.sol", ["0.8.12"]),
Test("free_functions/library_constant_function_collision.sol", ["0.8.12"]),
Test("ternary-with-max.sol", ["0.8.15"]),
Test("library_event-0.8.16.sol", ["0.8.16"]),
]
# create the output folder if needed
try:
os.mkdir("test_artifacts")
except OSError:
pass
@pytest.mark.parametrize("test_item", ALL_TESTS, ids=lambda x: x.test_file)
def test_parsing(test_item: Test):
flavors = ["compact"]
if not test_item.disable_legacy:
flavors += ["legacy"]
for version, flavor in test_item.versions_with_flavors:
test_file = os.path.join(
TEST_ROOT, "compile", f"{test_item.test_file}-{version}-{flavor}.zip"
)
expected_file = os.path.join(
TEST_ROOT, "expected", f"{test_item.test_file}-{version}-{flavor}.json"
)
cc = load_from_zip(test_file)[0]
sl = Slither(
cc,
solc_force_legacy_json=flavor == "legacy",
disallow_partial=True,
skip_analyze=True,
)
actual = generate_output(sl)
try:
with open(expected_file, "r", encoding="utf8") as f:
expected = json.load(f)
except OSError:
pytest.xfail("the file for this test was not generated")
raise
diff = DeepDiff(expected, actual, ignore_order=True, verbose_level=2, view="tree")
if diff:
for change in diff.get("values_changed", []):
path_list = re.findall(r"\['(.*?)'\]", change.path())
path = "_".join(path_list)
with open(
f"test_artifacts/{test_item.test_file}_{path}_expected.dot",
"w",
encoding="utf8",
) as f:
f.write(change.t1)
with open(
f"test_artifacts/{test_item.test_file}_{version}_{flavor}_{path}_actual.dot",
"w",
encoding="utf8",
) as f:
f.write(change.t2)
assert not diff, diff.pretty()
sl = Slither(cc, solc_force_legacy_json=flavor == "legacy", disallow_partial=True)
sl.register_printer(Echidna)
sl.run_printers()
def _generate_test(test_item: Test, skip_existing=False):
flavors = ["compact"]
if not test_item.disable_legacy:
flavors += ["legacy"]
for version, flavor in test_item.versions_with_flavors:
test_file = os.path.join(
TEST_ROOT, "compile", f"{test_item.test_file}-{version}-{flavor}.zip"
)
expected_file = os.path.join(
TEST_ROOT, "expected", f"{test_item.test_file}-{version}-{flavor}.json"
)
if skip_existing:
if os.path.isfile(expected_file):
continue
try:
cc = load_from_zip(test_file)[0]
sl = Slither(
cc,
solc_force_legacy_json=flavor == "legacy",
disallow_partial=True,
skip_analyze=True,
)
# pylint: disable=broad-except
except Exception as e:
print(e)
print(test_item)
print(f"{expected_file} failed")
continue
actual = generate_output(sl)
print(f"Generate {expected_file}")
# pylint: disable=no-member
Path(expected_file).parents[0].mkdir(parents=True, exist_ok=True)
with open(expected_file, "w", encoding="utf8") as f:
json.dump(actual, f, indent=" ")
def set_solc(version: str):
env = dict(os.environ)
env["SOLC_VERSION"] = version
os.environ.clear()
os.environ.update(env)
def _generate_compile(test_item: Test, skip_existing=False):
for version, flavor in test_item.versions_with_flavors:
test_file = os.path.join(TEST_ROOT, test_item.test_file)
expected_file = os.path.join(
TEST_ROOT, "compile", f"{test_item.test_file}-{version}-{flavor}.zip"
)
if skip_existing:
if os.path.isfile(expected_file):
continue
set_solc(version)
print(f"Compiled to {expected_file}")
cc = CryticCompile(test_file, solc_force_legacy_json=flavor == "legacy")
# pylint: disable=no-member
Path(expected_file).parents[0].mkdir(parents=True, exist_ok=True)
save_to_zip([cc], expected_file)
if __name__ == "__main__":
required_solcs = set()
for test in ALL_TESTS:
required_solcs |= set(test.solc_versions)
installed_solcs = set(get_installed_solc_versions())
missing_solcs = list(required_solcs - installed_solcs)
if missing_solcs:
install_solc_versions(missing_solcs)
if len(sys.argv) != 2 or sys.argv[1] not in ["--generate", "--overwrite", "--compile"]:
print(
"To generate the missing json artifacts run\n\tpython tests/test_ast_parsing.py --generate"
)
print(
"To re-generate all the json artifacts run\n\tpython tests/test_ast_parsing.py --overwrite"
)
print("To compile json artifacts run\n\tpython tests/test_ast_parsing.py --compile")
print("\tThis will overwrite the previous json files")
elif sys.argv[1] == "--generate":
for next_test in ALL_TESTS:
_generate_test(next_test, skip_existing=True)
elif sys.argv[1] == "--overwrite":
for next_test in ALL_TESTS:
_generate_test(next_test)
elif sys.argv[1] == "--compile":
for next_test in ALL_TESTS:
_generate_compile(next_test, skip_existing=True)