cppcheck/test/cli/test-other.py

# python -m pytest test-other.py

import os
import pytest

from testutils import cppcheck


def __test_missing_include(tmpdir, use_j):
    test_file = os.path.join(tmpdir, 'test.c')
    with open(test_file, 'wt') as f:
        f.write("""
                #include "test.h"
                """)

    args = ['--enable=missingInclude', '--template={file}:{line}:{column}: {severity}:{inconclusive:inconclusive:} {message} [{id}]', test_file]
    if use_j:
        args.insert(0, '-j2')

    _, _, stderr = cppcheck(args)
    assert stderr == '{}:2:0: information: Include file: "test.h" not found. [missingInclude]\n'.format(test_file)


def test_missing_include(tmpdir):
    __test_missing_include(tmpdir, False)


def test_missing_include_j(tmpdir): #11283
    __test_missing_include(tmpdir, True)


def __test_missing_include_check_config(tmpdir, use_j):
    test_file = os.path.join(tmpdir, 'test.c')
    with open(test_file, 'wt') as f:
        f.write("""
                #include "test.h"
                """)

    # TODO: -rp is not working requiring the full path in the assert
    args = '--check-config -rp={} {}'.format(tmpdir, test_file)
    if use_j:
        args = '-j2 ' + args

    _, _, stderr = cppcheck(args.split())
    assert stderr == '' # --check-config no longer reports the missing includes


def test_missing_include_check_config(tmpdir):
    __test_missing_include_check_config(tmpdir, False)


def test_missing_include_check_config_j(tmpdir):
    __test_missing_include_check_config(tmpdir, True)


def test_missing_include_inline_suppr(tmpdir):
    test_file = os.path.join(tmpdir, 'test.c')
    with open(test_file, 'wt') as f:
        f.write("""
                // cppcheck-suppress missingInclude
                #include "missing.h"
                // cppcheck-suppress missingIncludeSystem
                #include <missing2.h>
                """)

    args = ['--enable=missingInclude', '--inline-suppr', test_file]

    _, _, stderr = cppcheck(args)
    assert stderr == ''


def test_invalid_library(tmpdir):
    args = ['--library=none', '--library=posix', '--library=none2', 'file.c']

    exitcode, stdout, stderr = cppcheck(args)
    assert exitcode == 1
    assert (stdout == "cppcheck: Failed to load library configuration file 'none'. File not found\n"
                      "cppcheck: Failed to load library configuration file 'none2'. File not found\n")
    assert stderr == ""


def test_message_j(tmpdir):
    test_file = os.path.join(tmpdir, 'test.c')
    with open(test_file, 'wt') as f:
        f.write("")

    args = ['-j2', test_file]

    _, stdout, _ = cppcheck(args)
    assert stdout == "Checking {} ...\n".format(test_file) # we were adding stray \0 characters at the end

# TODO: test missing std.cfg


def test_progress(tmpdir):
    test_file = os.path.join(tmpdir, 'test.c')
    with open(test_file, 'wt') as f:
        f.write("""
                int main(int argc)
                {
                }
                """)

    args = ['--report-progress=0', '--enable=all', '--inconclusive', test_file]

    exitcode, stdout, stderr = cppcheck(args)
    assert exitcode == 0
    pos = stdout.find('\n')
    assert(pos != -1)
    pos += 1
    assert stdout[:pos] == "Checking {} ...\n".format(test_file)
    assert (stdout[pos:] ==
            "progress: Tokenize (typedef) 0%\n"
            "progress: Tokenize (typedef) 12%\n"
            "progress: Tokenize (typedef) 25%\n"
            "progress: Tokenize (typedef) 37%\n"
            "progress: Tokenize (typedef) 50%\n"
            "progress: Tokenize (typedef) 62%\n"
            "progress: Tokenize (typedef) 75%\n"
            "progress: Tokenize (typedef) 87%\n"
            "progress: SymbolDatabase 0%\n"
            "progress: SymbolDatabase 12%\n"
            "progress: SymbolDatabase 87%\n"
            )
    assert stderr == ""


def test_progress_j(tmpdir):
    test_file = os.path.join(tmpdir, 'test.c')
    with open(test_file, 'wt') as f:
        f.write("""
                int main(int argc)
                {
                }
                """)

    args = ['--report-progress=0', '--enable=all', '--inconclusive', '-j2', '--disable=unusedFunction', test_file]

    exitcode, stdout, stderr = cppcheck(args)
    assert exitcode == 0
    assert stdout == "Checking {} ...\n".format(test_file)
    assert stderr == ""


@pytest.mark.timeout(10)
def test_slow_array_many_floats(tmpdir):
    # 11649
    # cppcheck valueflow takes a long time when an array has many floats
    filename = os.path.join(tmpdir, 'hang.c')
    with open(filename, 'wt') as f:
        f.write("const float f[] = {\n")
        for i in range(20000):
            f.write('    13.6f,\n')
        f.write("};\n")
    cppcheck([filename]) # should not take more than ~1 second


@pytest.mark.timeout(10)
def test_slow_array_many_strings(tmpdir):
    # 11901
    # cppcheck valueflow takes a long time when analyzing a file with many strings
    filename = os.path.join(tmpdir, 'hang.c')
    with open(filename, 'wt') as f:
        f.write("const char *strings[] = {\n")
        for i in range(20000):
            f.write('    "abc",\n')
        f.write("};\n")
    cppcheck([filename]) # should not take more than ~1 second


@pytest.mark.timeout(10)
def test_slow_long_line(tmpdir):
    # simplecpp #314
    filename = os.path.join(tmpdir, 'hang.c')
    with open(filename, 'wt') as f:
        f.write("#define A() static const int a[] = {\\\n")
        for i in range(5000):
            f.write(" -123, 456, -789,\\\n")
        f.write("};\n")
    cppcheck([filename]) # should not take more than ~1 second


def test_execute_addon_failure(tmpdir):
    test_file = os.path.join(tmpdir, 'test.cpp')
    with open(test_file, 'wt') as f:
        f.write("""
                void f();
                """)

    args = ['--addon=naming', test_file]

    # provide empty PATH environment variable so python is not found and execution of addon fails
    env = {'PATH': ''}
    _, _, stderr = cppcheck(args, env)
    assert stderr == '{}:0:0: error: Bailing out from analysis: Checking file failed: Failed to auto detect python [internalError]\n\n^\n'.format(test_file)


def test_execute_addon_failure_2(tmpdir):
    test_file = os.path.join(tmpdir, 'test.cpp')
    with open(test_file, 'wt') as f:
        f.write("""
                void f();
                """)

    # specify non-existent python executbale so execution of addon fails
    args = ['--addon=naming', '--addon-python=python5.x', test_file]

    _, _, stderr = cppcheck(args)
    ec = 1 if os.name == 'nt' else 127
    assert stderr == "{}:0:0: error: Bailing out from analysis: Checking file failed: Failed to execute addon 'naming' - exitcode is {} [internalError]\n\n^\n".format(test_file, ec)


# TODO: find a test case which always fails
@pytest.mark.skip
def test_internal_error(tmpdir):
    test_file = os.path.join(tmpdir, 'test.cpp')
    with open(test_file, 'wt') as f:
        f.write("""
#include <cstdio>

void f() {
    double gc = 3333.3333;
    char stat[80];
    sprintf(stat,"'%2.1f'",gc);
}
                """)

    args = [test_file]

    _, _, stderr = cppcheck(args)
    assert stderr == '{}:0:0: error: Bailing from out analysis: Checking file failed: converting \'1f\' to integer failed - not an integer [internalError]\n\n^\n'.format(test_file)


def test_addon_misra(tmpdir):
    test_file = os.path.join(tmpdir, 'test.cpp')
    with open(test_file, 'wt') as f:
        f.write("""
typedef int MISRA_5_6_VIOLATION;
        """)

    args = ['--addon=misra', '--enable=all', test_file]

    exitcode, stdout, stderr = cppcheck(args)
    assert exitcode == 0
    lines = stdout.splitlines()
    assert lines == [
        'Checking {} ...'.format(test_file)
    ]
    assert stderr == '{}:2:1: style: misra violation (use --rule-texts=<file> to get proper output) [misra-c2012-2.3]\ntypedef int MISRA_5_6_VIOLATION;\n^\n'.format(test_file)


def test_addon_y2038(tmpdir):
    test_file = os.path.join(tmpdir, 'test.cpp')
    # TODO: trigger warning
    with open(test_file, 'wt') as f:
        f.write("""
extern void f()
{
    time_t t = std::time(nullptr);
    (void)t;
}
        """)

    args = ['--addon=y2038', '--enable=all', '--template={file}:{line}:{column}: {severity}:{inconclusive:inconclusive:} {message} [{id}]', test_file]

    exitcode, stdout, stderr = cppcheck(args)
    assert exitcode == 0
    lines = stdout.splitlines()
    assert lines == [
        'Checking {} ...'.format(test_file)
    ]
    assert stderr == '{}:4:21: warning: time is Y2038-unsafe [y2038-unsafe-call]\n'.format(test_file)


def test_addon_threadsafety(tmpdir):
    test_file = os.path.join(tmpdir, 'test.cpp')
    with open(test_file, 'wt') as f:
        f.write("""
extern const char* f()
{
    return strerror(1);
}
        """)

    args = ['--addon=threadsafety', '--enable=all', '--template={file}:{line}:{column}: {severity}:{inconclusive:inconclusive:} {message} [{id}]', test_file]

    exitcode, stdout, stderr = cppcheck(args)
    assert exitcode == 0
    lines = stdout.splitlines()
    assert lines == [
        'Checking {} ...'.format(test_file)
    ]
    assert stderr == '{}:4:12: warning: strerror is MT-unsafe [threadsafety-unsafe-call]\n'.format(test_file)


def test_addon_naming(tmpdir):
    # the addon does nothing without a config
    addon_file = os.path.join(tmpdir, 'naming1.json')
    with open(addon_file, 'wt') as f:
        f.write("""
{
    "script": "addons/naming.py",
    "args": [
        "--var=[_a-z].*"
    ]
}
                """)

    test_file = os.path.join(tmpdir, 'test.cpp')
    with open(test_file, 'wt') as f:
        f.write("""
int Var;
        """)

    args = ['--addon={}'.format(addon_file), '--enable=all', '--template={file}:{line}:{column}: {severity}:{inconclusive:inconclusive:} {message} [{id}]', test_file]

    exitcode, stdout, stderr = cppcheck(args)
    assert exitcode == 0
    lines = stdout.splitlines()
    assert lines == [
        'Checking {} ...'.format(test_file)
    ]
    assert stderr == '{}:2:1: style: Variable Var violates naming convention [naming-varname]\n'.format(test_file)


# the namingng addon only works standalone and not in CLI mode - see #12005
@pytest.mark.skip
def test_addon_namingng(tmpdir):
    test_file = os.path.join(tmpdir, 'test.cpp')
    # TODO: trigger warning
    with open(test_file, 'wt') as f:
        f.write("""
typedef int MISRA_5_6_VIOLATION;
        """)

    args = ['--addon=namingng', '--enable=all', test_file]

    exitcode, stdout, stderr = cppcheck(args)
    assert exitcode == 0
    lines = stdout.splitlines()
    assert lines == [
        'Checking {} ...'.format(test_file)
    ]
    assert stderr == ''


def test_addon_findcasts(tmpdir):
    test_file = os.path.join(tmpdir, 'test.cpp')
    with open(test_file, 'wt') as f:
        f.write("""
        extern void f(char c)
        {
            int i = (int)c;
            (void)i;
        }
        """)

    args = ['--addon=findcasts', '--enable=all', '--template={file}:{line}:{column}: {severity}:{inconclusive:inconclusive:} {message} [{id}]', test_file]

    exitcode, stdout, stderr = cppcheck(args)
    assert exitcode == 0
    lines = stdout.splitlines()
    assert lines == [
        'Checking {} ...'.format(test_file)
    ]
    assert stderr == '{}:4:21: information: found a cast [findcasts-cast]\n'.format(test_file)


def test_addon_misc(tmpdir):
    test_file = os.path.join(tmpdir, 'test.cpp')
    with open(test_file, 'wt') as f:
        f.write("""
extern void f()
{
    char char* [] = {"a" "b"}
}
        """)

    args = ['--addon=misc', '--enable=all', '--template={file}:{line}:{column}: {severity}:{inconclusive:inconclusive:} {message} [{id}]', test_file]

    exitcode, stdout, stderr = cppcheck(args)
    assert exitcode == 0
    lines = stdout.splitlines()
    assert lines == [
        'Checking {} ...'.format(test_file)
    ]
    assert stderr == '{}:4:26: style: String concatenation in array initialization, missing comma? [misc-stringConcatInArrayInit]\n'.format(test_file)


def test_invalid_addon_json(tmpdir):
    addon_file = os.path.join(tmpdir, 'addon1.json')
    with open(addon_file, 'wt') as f:
        f.write("""
                """)

    test_file = os.path.join(tmpdir, 'file.cpp')
    with open(test_file, 'wt') as f:
        f.write("""
typedef int MISRA_5_6_VIOLATION;
                """)

    args = ['--addon={}'.format(addon_file), '--enable=all', test_file]

    exitcode, stdout, stderr = cppcheck(args)
    assert exitcode == 0  # TODO: needs to be 1
    lines = stdout.splitlines()
    assert lines == [
        'Checking {} ...'.format(test_file),
        'Loading {} failed. syntax error at line 2 near: '.format(addon_file),
        'Loading {} failed. syntax error at line 2 near: '.format(addon_file)
    ]
    assert stderr == ''


def test_invalid_addon_py(tmpdir):
    addon_file = os.path.join(tmpdir, 'addon1.py')
    with open(addon_file, 'wt') as f:
        f.write("""
raise Exception()
                """)

    test_file = os.path.join(tmpdir, 'file.cpp')
    with open(test_file, 'wt') as f:
        f.write("""
typedef int MISRA_5_6_VIOLATION;
                """)

    args = ['--addon={}'.format(addon_file), '--enable=all', test_file]

    exitcode, stdout, stderr = cppcheck(args)
    assert exitcode == 0  # TODO: needs to be 1
    lines = stdout.splitlines()
    assert lines == [
        'Checking {} ...'.format(test_file)
    ]
    assert stderr == "{}:0:0: error: Bailing out from analysis: Checking file failed: Failed to execute addon 'addon1' - exitcode is 1 [internalError]\n\n^\n".format(test_file)


def test_invalid_addon_py_verbose(tmpdir):
    addon_file = os.path.join(tmpdir, 'addon1.py')
    with open(addon_file, 'wt') as f:
        f.write("""
raise Exception()
                """)

    test_file = os.path.join(tmpdir, 'file.cpp')
    with open(test_file, 'wt') as f:
        f.write("""
typedef int MISRA_5_6_VIOLATION;
                """)

    args = ['--addon={}'.format(addon_file), '--enable=all', '--verbose', test_file]

    exitcode, stdout, stderr = cppcheck(args)
    assert exitcode == 0  # TODO: needs to be 1
    lines = stdout.splitlines()
    assert lines == [
        'Checking {} ...'.format(test_file),
        'Defines:',
        'Undefines:',
        'Includes:',
        'Platform:native'
    ]
    """
/tmp/pytest-of-user/pytest-11/test_invalid_addon_py_20/file.cpp:0:0: error: Bailing out from analysis: Checking file failed: Failed to execute addon 'addon1' - exitcode is 1: python3 /home/user/CLionProjects/cppcheck/addons/runaddon.py /tmp/pytest-of-user/pytest-11/test_invalid_addon_py_20/addon1.py --cli /tmp/pytest-of-user/pytest-11/test_invalid_addon_py_20/file.cpp.24762.dump
Output:
Traceback (most recent call last):
  File "/home/user/CLionProjects/cppcheck/addons/runaddon.py", line 8, in <module>
    runpy.run_path(addon, run_name='__main__')
  File "<frozen runpy>", line 291, in run_path
  File "<frozen runpy>", line 98, in _run_module_code
  File "<frozen runpy>", line 88, in _run_code
  File "/tmp/pytest-of-user/pytest-11/test_invalid_addon_py_20/addon1.py", line 2, in <module>
    raise Exception()
Exceptio [internalError]
    """
    # /tmp/pytest-of-user/pytest-10/test_invalid_addon_py_20/file.cpp:0:0: error: Bailing out from analysis: Checking file failed: Failed to execute addon 'addon1' - exitcode is 256.: python3 /home/user/CLionProjects/cppcheck/addons/runaddon.py /tmp/pytest-of-user/pytest-10/test_invalid_addon_py_20/addon1.py --cli /tmp/pytest-of-user/pytest-10/test_invalid_addon_py_20/file.cpp.24637.dump
    assert stderr.startswith("{}:0:0: error: Bailing out from analysis: Checking file failed: Failed to execute addon 'addon1' - exitcode is 1: ".format(test_file))
    assert stderr.count('Output:\nTraceback')
    assert stderr.endswith('raise Exception()\nException [internalError]\n\n^\n')


def test_addon_result(tmpdir):
    addon_file = os.path.join(tmpdir, 'addon1.py')
    with open(addon_file, 'wt') as f:
        f.write("""
print("Checking ...")
print("")
print('{"file": "test.cpp", "linenr": 1, "column": 1, "severity": "style", "message": "msg", "addon": "addon1", "errorId": "id", "extra": ""}')
print('{"loc": [{"file": "test.cpp", "linenr": 1, "column": 1, "info": ""}], "severity": "style", "message": "msg", "addon": "addon1", "errorId": "id", "extra": ""}')
                """)

    test_file = os.path.join(tmpdir, 'file.cpp')
    with open(test_file, 'wt') as f:
        f.write("""
typedef int MISRA_5_6_VIOLATION;
                """)

    args = ['--addon={}'.format(addon_file), '--enable=all', test_file]

    exitcode, stdout, stderr = cppcheck(args)
    assert exitcode == 0  # TODO: needs to be 1
    lines = stdout.splitlines()
    assert lines == [
        'Checking {} ...'.format(test_file)
    ]
    assert stderr == 'test.cpp:1:1: style: msg [addon1-id]\n\n^\n'


# #11483
def test_unused_function_include(tmpdir):
    test_cpp_file = os.path.join(tmpdir, 'test.cpp')
    with open(test_cpp_file, 'wt') as f:
        f.write("""
                #include "test.h"
                """)

    test_h_file = os.path.join(tmpdir, 'test.h')
    with open(test_h_file, 'wt') as f:
        f.write("""
                class A {
                public:
                    void f() {}
                    // cppcheck-suppress unusedFunction
                    void f2() {}
                };
                """)

    args = ['--enable=unusedFunction', '--inline-suppr', '--template={file}:{line}:{column}: {severity}:{inconclusive:inconclusive:} {message} [{id}]', test_cpp_file]

    _, _, stderr = cppcheck(args)
    assert stderr == "{}:4:0: style: The function 'f' is never used. [unusedFunction]\n".format(test_h_file)