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import os
import sys
import unittest
sys.path.insert(0, "..")
from pycparser import parse_file, c_ast
from tests.test_util import cpp_supported, cpp_path, cpp_args
# Test successful parsing
#
class TestParsing(unittest.TestCase):
def _find_file(self, name):
"""Find a c file by name, taking into account the current dir can be
in a couple of typical places
"""
testdir = os.path.dirname(__file__)
name = os.path.join(testdir, "c_files", name)
assert os.path.exists(name)
return name
def test_without_cpp(self):
ast = parse_file(self._find_file("example_c_file.c"))
self.assertIsInstance(ast, c_ast.FileAST)
@unittest.skipUnless(cpp_supported(), "cpp only works on Unix")
def test_with_cpp(self):
memmgr_path = self._find_file("memmgr.c")
c_files_path = os.path.dirname(memmgr_path)
ast = parse_file(
memmgr_path,
use_cpp=True,
cpp_path=cpp_path(),
cpp_args=cpp_args(f"-I{c_files_path}"),
)
self.assertIsInstance(ast, c_ast.FileAST)
fake_libc = os.path.join(c_files_path, "..", "..", "utils", "fake_libc_include")
ast2 = parse_file(
self._find_file("year.c"),
use_cpp=True,
cpp_path=cpp_path(),
cpp_args=cpp_args(f"-I{fake_libc}"),
)
self.assertIsInstance(ast2, c_ast.FileAST)
@unittest.skipUnless(cpp_supported(), "cpp only works on Unix")
def test_cpp_funkydir(self):
# This test contains Windows specific path escapes
if sys.platform != "win32":
return
c_files_path = os.path.join("tests", "c_files")
ast = parse_file(
self._find_file("simplemain.c"),
use_cpp=True,
cpp_path=cpp_path(),
cpp_args=cpp_args(f"-I{c_files_path}"),
)
self.assertIsInstance(ast, c_ast.FileAST)
@unittest.skipUnless(cpp_supported(), "cpp only works on Unix")
def test_no_real_content_after_cpp(self):
ast = parse_file(
self._find_file("empty.h"),
use_cpp=True,
cpp_path=cpp_path(),
cpp_args=cpp_args(),
)
self.assertIsInstance(ast, c_ast.FileAST)
@unittest.skipUnless(cpp_supported(), "cpp only works on Unix")
def test_c11_with_cpp(self):
c_files_path = os.path.join("tests", "c_files")
fake_libc = os.path.join(c_files_path, "..", "..", "utils", "fake_libc_include")
ast = parse_file(
self._find_file("c11.c"),
use_cpp=True,
cpp_path=cpp_path(),
cpp_args=cpp_args(f"-I{fake_libc}"),
)
self.assertIsInstance(ast, c_ast.FileAST)
if __name__ == "__main__":
unittest.main()
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