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"""Discover all the test cases (unit tests and SSL tests)."""
# Copyright The Mbed TLS Contributors
# SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
import glob
import os
import re
import subprocess
import sys
from . import build_tree
class ScriptOutputError(ValueError):
"""A kind of ValueError that indicates we found
the script doesn't list test cases in an expected
pattern.
"""
@property
def script_name(self):
return super().args[0]
@property
def idx(self):
return super().args[1]
@property
def line(self):
return super().args[2]
class Results:
"""Store file and line information about errors or warnings in test suites."""
def __init__(self, options):
self.errors = 0
self.warnings = 0
self.ignore_warnings = options.quiet
def error(self, file_name, line_number, fmt, *args):
sys.stderr.write(('{}:{}:ERROR:' + fmt + '\n').
format(file_name, line_number, *args))
self.errors += 1
def warning(self, file_name, line_number, fmt, *args):
if not self.ignore_warnings:
sys.stderr.write(('{}:{}:Warning:' + fmt + '\n')
.format(file_name, line_number, *args))
self.warnings += 1
class TestDescriptionExplorer:
"""An iterator over test cases with descriptions.
The test cases that have descriptions are:
* Individual unit tests (entries in a .data file) in test suites.
* Individual test cases in ssl-opt.sh.
This is an abstract class. To use it, derive a class that implements
the process_test_case method, and call walk_all().
"""
def process_test_case(self, per_file_state,
file_name, line_number, description):
"""Process a test case.
per_file_state: an object created by new_per_file_state() at the beginning
of each file.
file_name: a relative path to the file containing the test case.
line_number: the line number in the given file.
description: the test case description as a byte string.
"""
raise NotImplementedError
def new_per_file_state(self):
"""Return a new per-file state object.
The default per-file state object is None. Child classes that require per-file
state may override this method.
"""
#pylint: disable=no-self-use
return None
def walk_test_suite(self, data_file_name):
"""Iterate over the test cases in the given unit test data file."""
in_paragraph = False
descriptions = self.new_per_file_state() # pylint: disable=assignment-from-none
with open(data_file_name, 'rb') as data_file:
for line_number, line in enumerate(data_file, 1):
line = line.rstrip(b'\r\n')
if not line:
in_paragraph = False
continue
if line.startswith(b'#'):
continue
if not in_paragraph:
# This is a test case description line.
self.process_test_case(descriptions,
data_file_name, line_number, line)
in_paragraph = True
def collect_from_script(self, script_name):
"""Collect the test cases in a script by calling its listing test cases
option"""
descriptions = self.new_per_file_state() # pylint: disable=assignment-from-none
listed = subprocess.check_output(['sh', script_name, '--list-test-cases'])
# Assume test file is responsible for printing identical format of
# test case description between --list-test-cases and its OUTCOME.CSV
#
# idx indicates the number of test case since there is no line number
# in the script for each test case.
for idx, line in enumerate(listed.splitlines()):
# We are expecting the script to list the test cases in
# `<suite_name>;<description>` pattern.
script_outputs = line.split(b';', 1)
if len(script_outputs) == 2:
suite_name, description = script_outputs
else:
raise ScriptOutputError(script_name, idx, line.decode("utf-8"))
self.process_test_case(descriptions,
suite_name.decode('utf-8'),
idx,
description.rstrip())
@staticmethod
def collect_test_directories():
"""Get the relative path for the TLS and Crypto test directories."""
project_root = build_tree.guess_project_root()
if build_tree.looks_like_mbedtls_root(project_root) and not build_tree.is_mbedtls_3_6():
directories = [os.path.join(project_root, 'tests'),
os.path.join(project_root, 'tf-psa-crypto', 'tests')]
else:
directories = [os.path.join(project_root, 'tests')]
directories = [os.path.relpath(p) for p in directories]
return directories
def walk_all(self):
"""Iterate over all named test cases."""
test_directories = self.collect_test_directories()
for directory in test_directories:
for data_file_name in glob.glob(os.path.join(directory, 'suites',
'*.data')):
self.walk_test_suite(data_file_name)
for sh_file in ['ssl-opt.sh', 'compat.sh']:
sh_file = os.path.join(directory, sh_file)
if os.path.isfile(sh_file):
self.collect_from_script(sh_file)
class TestDescriptions(TestDescriptionExplorer):
"""Collect the available test cases."""
def __init__(self):
super().__init__()
self.descriptions = set()
def process_test_case(self, _per_file_state,
file_name, _line_number, description):
"""Record an available test case."""
base_name = re.sub(r'\.[^.]*$', '', re.sub(r'.*/', '', file_name))
key = ';'.join([base_name, description.decode('utf-8')])
self.descriptions.add(key)
def collect_available_test_cases():
"""Collect the available test cases."""
explorer = TestDescriptions()
explorer.walk_all()
return sorted(explorer.descriptions)
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