cppcheck/test/cli/test-more-projects.py

# python -m pytest test-more-projects.py

import os
import tempfile
from testutils import cppcheck


def test_project_force_U():
    # 10018
    # -U does not work with compile_commands.json
    with tempfile.TemporaryDirectory('10018') as temp_folder:
        with open(os.path.join(temp_folder, 'bug1.cpp'), 'wt') as f:
            f.write("""
                    int x = 123 / 0;
                    #ifdef MACRO1
                    int y = 1000 / 0;
                    #endif
                    """)

        compile_commands = os.path.join(temp_folder, 'compile_commands.json')

        with open(compile_commands, 'wt') as f:
            f.write('[ { "directory": "%s", "command": "c++ -o bug1.o -c bug1.cpp", "file": "bug1.cpp", "output": "bug1.o" } ]' % str(temp_folder))

        # Without -U => both bugs are found
        ret, stdout, stderr = cppcheck(['--project=' + compile_commands, '--force', '-rp=' + temp_folder, '--template=cppcheck1'])
        assert (stderr == '[bug1.cpp:2]: (error) Division by zero.\n'
                          '[bug1.cpp:4]: (error) Division by zero.\n')

        # With -U => only first bug is found
        ret, stdout, stderr = cppcheck(['--project=' + compile_commands, '--force', '-UMACRO1', '-rp=' + temp_folder, '--template=cppcheck1'])
        assert stderr == '[bug1.cpp:2]: (error) Division by zero.\n'