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import os
from clang.cindex import CompilationDatabase, CompilationDatabaseError, Config
if "CLANG_LIBRARY_PATH" in os.environ:
Config.set_library_path(os.environ["CLANG_LIBRARY_PATH"])
import gc
import unittest
import sys
from pathlib import Path
INPUTS_DIR = os.path.join(os.path.dirname(__file__), "INPUTS")
@unittest.skipIf(sys.platform == "win32", "TODO: Fix these tests on Windows")
class TestCDB(unittest.TestCase):
def test_create_fail(self):
"""Check we fail loading a database with an assertion"""
path = os.path.dirname(__file__)
# clang_CompilationDatabase_fromDirectory calls fprintf(stderr, ...)
# Suppress its output.
try:
stderr = os.dup(2)
with open(os.devnull, "wb") as null:
os.dup2(null.fileno(), 2)
with self.assertRaises(CompilationDatabaseError) as cm:
CompilationDatabase.fromDirectory(path)
# Ensures that stderr is reset even if the above code crashes
finally:
os.dup2(stderr, 2)
os.close(stderr)
e = cm.exception
self.assertEqual(e.cdb_error, CompilationDatabaseError.ERROR_CANNOTLOADDATABASE)
def test_create(self):
"""Check we can load a compilation database"""
CompilationDatabase.fromDirectory(INPUTS_DIR)
def test_lookup_succeed(self):
"""Check we get some results if the file exists in the db"""
cdb = CompilationDatabase.fromDirectory(INPUTS_DIR)
cmds = cdb.getCompileCommands("/home/john.doe/MyProject/project.cpp")
self.assertNotEqual(len(cmds), 0)
def test_lookup_succeed_pathlike(self):
"""Same as test_lookup_succeed, but with PathLikes"""
cdb = CompilationDatabase.fromDirectory(Path(INPUTS_DIR))
cmds = cdb.getCompileCommands(Path("/home/john.doe/MyProject/project.cpp"))
self.assertNotEqual(len(cmds), 0)
def test_all_compilecommand(self):
"""Check we get all results from the db"""
cdb = CompilationDatabase.fromDirectory(INPUTS_DIR)
cmds = cdb.getAllCompileCommands()
self.assertEqual(len(cmds), 3)
expected = [
{
"wd": "/home/john.doe/MyProject",
"file": "/home/john.doe/MyProject/project.cpp",
"line": [
"clang++",
"--driver-mode=g++",
"-o",
"project.o",
"-c",
"/home/john.doe/MyProject/project.cpp",
],
},
{
"wd": "/home/john.doe/MyProjectA",
"file": "/home/john.doe/MyProject/project2.cpp",
"line": [
"clang++",
"--driver-mode=g++",
"-o",
"project2.o",
"-c",
"/home/john.doe/MyProject/project2.cpp",
],
},
{
"wd": "/home/john.doe/MyProjectB",
"file": "/home/john.doe/MyProject/project2.cpp",
"line": [
"clang++",
"--driver-mode=g++",
"-DFEATURE=1",
"-o",
"project2-feature.o",
"-c",
"/home/john.doe/MyProject/project2.cpp",
],
},
]
for i in range(len(cmds)):
self.assertEqual(cmds[i].directory, expected[i]["wd"])
self.assertEqual(cmds[i].filename, expected[i]["file"])
for arg, exp in zip(cmds[i].arguments, expected[i]["line"]):
self.assertEqual(arg, exp)
def test_1_compilecommand(self):
"""Check file with single compile command"""
cdb = CompilationDatabase.fromDirectory(INPUTS_DIR)
file = "/home/john.doe/MyProject/project.cpp"
cmds = cdb.getCompileCommands(file)
self.assertEqual(len(cmds), 1)
self.assertEqual(cmds[0].directory, os.path.dirname(file))
self.assertEqual(cmds[0].filename, file)
expected = [
"clang++",
"--driver-mode=g++",
"-o",
"project.o",
"-c",
"/home/john.doe/MyProject/project.cpp",
]
for arg, exp in zip(cmds[0].arguments, expected):
self.assertEqual(arg, exp)
def test_2_compilecommand(self):
"""Check file with 2 compile commands"""
cdb = CompilationDatabase.fromDirectory(INPUTS_DIR)
cmds = cdb.getCompileCommands("/home/john.doe/MyProject/project2.cpp")
self.assertEqual(len(cmds), 2)
expected = [
{
"wd": "/home/john.doe/MyProjectA",
"line": [
"clang++",
"--driver-mode=g++",
"-o",
"project2.o",
"-c",
"/home/john.doe/MyProject/project2.cpp",
],
},
{
"wd": "/home/john.doe/MyProjectB",
"line": [
"clang++",
"--driver-mode=g++",
"-DFEATURE=1",
"-o",
"project2-feature.o",
"-c",
"/home/john.doe/MyProject/project2.cpp",
],
},
]
for i in range(len(cmds)):
self.assertEqual(cmds[i].directory, expected[i]["wd"])
for arg, exp in zip(cmds[i].arguments, expected[i]["line"]):
self.assertEqual(arg, exp)
def test_compilecommand_iterator_stops(self):
"""Check that iterator stops after the correct number of elements"""
cdb = CompilationDatabase.fromDirectory(INPUTS_DIR)
count = 0
for cmd in cdb.getCompileCommands("/home/john.doe/MyProject/project2.cpp"):
count += 1
self.assertLessEqual(count, 2)
def test_compilationDB_references(self):
"""Ensure CompilationsCommands are independent of the database"""
cdb = CompilationDatabase.fromDirectory(INPUTS_DIR)
cmds = cdb.getCompileCommands("/home/john.doe/MyProject/project.cpp")
del cdb
gc.collect()
cmds[0].directory
def test_compilationCommands_references(self):
"""Ensure CompilationsCommand keeps a reference to CompilationCommands"""
cdb = CompilationDatabase.fromDirectory(INPUTS_DIR)
cmds = cdb.getCompileCommands("/home/john.doe/MyProject/project.cpp")
del cdb
cmd0 = cmds[0]
del cmds
gc.collect()
cmd0.directory
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