cppcheck/test/cli/test-clang-import.py

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# python -m pytest test-clang-import.py
import os
import re
import subprocess
from testutils import create_gui_project_file, cppcheck
def get_debug_section(title, stdout):
s = re.sub(r'0x[0-9a-fA-F]+', '0x12345678', stdout)
s = re.sub(r'nestedIn: Struct', 'nestedIn: Class', s)
s = re.sub(r'classDef: struct', 'classDef: class', s)
s = re.sub(r'isInline: [a-z]+', 'isInline: ---', s)
s = re.sub(r'definedType: .*', 'definedType: ---', s)
s = re.sub(r'needInitialization: .*', 'needInitialization: ---', s)
s = re.sub(r'functionOf: .*', 'functionOf: ---', s)
s = re.sub(r'0x12345678 Struct', '0x12345678 Class', s)
pos1 = s.find(title)
assert pos1 > 0
pos1 = s.find('\n', pos1) + 1
assert pos1 > 0
pos2 = s.find("\n##", pos1)
if pos2 < 0:
return s[pos1:]
return s[pos1:pos2-1]
def check_symbol_database(code):
# Only compare symboldatabases if clang is found in PATH
try:
subprocess.call(['clang', '--version'])
except OSError:
return
testfile = 'test.cpp'
with open(testfile, 'w+t') as f:
f.write(code)
ret1, stdout1, stderr1 = cppcheck(['--clang', '--debug', '-v', testfile])
ret2, stdout2, stderr2 = cppcheck(['--debug', '-v', testfile])
os.remove(testfile)
assert get_debug_section('### Symbol database', stdout1) == get_debug_section('### Symbol database', stdout2)
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def check_ast(code):
# Only compare syntax trees if clang is found in PATH
try:
subprocess.call(['clang', '--version'])
except OSError:
return
testfile = 'test.cpp'
with open(testfile, 'w+t') as f:
f.write(code)
ret1, stdout1, stderr1 = cppcheck(['--clang', '--debug', '-v', testfile])
ret2, stdout2, stderr2 = cppcheck(['--debug', '-v', testfile])
os.remove(testfile)
assert get_debug_section('##AST', stdout1) == get_debug_section('##AST', stdout2)
def todo_check_ast(code):
# Only compare syntax trees if clang is found in PATH
try:
subprocess.call(['clang', '--version'])
except OSError:
return
testfile = 'test.cpp'
with open(testfile, 'w+t') as f:
f.write(code)
ret1, stdout1, stderr1 = cppcheck(['--clang', '--debug', '-v', testfile])
ret2, stdout2, stderr2 = cppcheck(['--debug', '-v', testfile])
os.remove(testfile)
assert get_debug_section('##AST', stdout1) != get_debug_section('##AST', stdout2)
def test_symbol_database_1():
check_symbol_database('int main(){return 0;}')
def test_symbol_database_2():
code = 'struct Foo { void f(); }; void Foo::f() {}'
check_symbol_database(code)
def test_symbol_database_3():
check_symbol_database('struct Fred { int a; }; int b; void f(int c, int d) { int e; }')
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def test_ast_calculations():
check_ast('int x = 5; int y = (x + 4) * 2;')
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check_ast('long long dostuff(int x) { return x ? 3 : 5; }')
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def test_ast_control_flow():
check_ast('void foo(int x) { if (x > 5){} }')
check_ast('int dostuff() { for (int x = 0; x < 10; x++); }')
check_ast('void foo(int x) { switch (x) {case 1: break; } }')
check_ast('void foo(int a, int b, int c) { foo(a,b,c); }')
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