cppcheck/addons/test/test-misra.py

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# python -m pytest addons/test/test-misra.py
import json
import pytest
import re
import sys
try:
from cStringIO import StringIO
except ImportError:
from io import StringIO
import subprocess
TEST_SOURCE_FILES = ['./addons/test/misra-test.c']
def dump_create(fpath, *argv):
cmd = ["./cppcheck", "--dump", "--quiet", fpath] + list(argv)
p = subprocess.Popen(cmd)
p.communicate()
if p.returncode != 0:
raise OSError("cppcheck returns error code: %d" % p.returncode)
subprocess.Popen(["sync"])
def dump_remove(fpath):
subprocess.Popen(["rm", "-f", fpath + ".dump"])
def setup_module(module):
for f in TEST_SOURCE_FILES:
dump_create(f)
def teardown_module(module):
for f in TEST_SOURCE_FILES:
dump_remove(f)
@pytest.fixture(scope="function")
def checker():
from addons.misra import MisraChecker, MisraSettings, get_args
args = get_args()
settings = MisraSettings(args)
return MisraChecker(settings)
def test_loadRuleTexts_structure(checker):
checker.loadRuleTexts("./addons/test/assets/misra_rules_structure.txt")
assert(checker.ruleTexts.get(101, None) is None)
assert(checker.ruleTexts[102].text == "Rule text.")
assert(checker.ruleTexts.get(103, None) is None)
def test_loadRuleTexts_empty_lines(checker):
checker.loadRuleTexts("./addons/test/assets/misra_rules_empty_lines.txt")
assert(len(checker.ruleTexts) == 3)
assert(len(checker.ruleTexts[102].text) == len("Rule text."))
def test_loadRuleTexts_mutiple_lines(checker):
checker.loadRuleTexts("./addons/test/assets/misra_rules_multiple_lines.txt")
assert(checker.ruleTexts[101].text == "Multiple lines text.")
assert(checker.ruleTexts[102].text == "Multiple lines text.")
assert(checker.ruleTexts[103].text == "Multiple lines text.")
assert(checker.ruleTexts[104].text == "Should")
assert(checker.ruleTexts[105].text == "Should")
assert(checker.ruleTexts[106].text == "Should")
def test_verifyRuleTexts(checker, capsys):
checker.loadRuleTexts("./addons/test/assets/misra_rules_dummy.txt")
checker.verifyRuleTexts()
captured = capsys.readouterr().out
assert("21.3" not in captured)
assert("1.3" in captured)
def test_rules_misra_severity(checker):
checker.loadRuleTexts("./addons/test/assets/misra_rules_dummy.txt")
assert(checker.ruleTexts[1004].misra_severity == 'Mandatory')
assert(checker.ruleTexts[401].misra_severity == 'Required')
assert(checker.ruleTexts[1505].misra_severity == 'Advisory')
assert(checker.ruleTexts[2104].misra_severity == '')
def test_json_out(checker, capsys):
sys.argv.append("--cli")
checker.loadRuleTexts("./addons/test/assets/misra_rules_dummy.txt")
checker.parseDump("./addons/test/misra-test.c.dump")
captured = capsys.readouterr()
captured = captured.out.splitlines()
sys.argv.remove("--cli")
json_output = {}
for line in captured:
try:
json_line = json.loads(line)
json_output[json_line['errorId']] = json_line
except ValueError:
pass
assert("Mandatory" in json_output['c2012-10.4']['extra'])
assert("Required" in json_output['c2012-21.3']['extra'])
assert("Advisory" in json_output['c2012-20.1']['extra'])
def test_rules_cppcheck_severity(checker, capsys):
checker.loadRuleTexts("./addons/test/assets/misra_rules_dummy.txt")
checker.parseDump("./addons/test/misra-test.c.dump")
captured = capsys.readouterr().err
assert("(error)" not in captured)
assert("(warning)" not in captured)
assert("(style)" in captured)
def test_rules_suppression(checker, capsys):
test_sources = ["addons/test/misra-suppressions1-test.c",
"addons/test/misra-suppressions2-test.c"]
for src in test_sources:
re_suppressed= r"\[%s\:[0-9]+\]" % src
dump_remove(src)
dump_create(src, "--suppressions-list=addons/test/suppressions.txt")
checker.parseDump(src + ".dump")
captured = capsys.readouterr().err
found = re.search(re_suppressed, captured)
assert(found is None)
dump_remove(src)