v4.19.13 snapshot.
diff --git a/scripts/kconfig/tests/conftest.py b/scripts/kconfig/tests/conftest.py
new file mode 100644
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+++ b/scripts/kconfig/tests/conftest.py
@@ -0,0 +1,291 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+# Copyright (C) 2018 Masahiro Yamada <yamada.masahiro@socionext.com>
+#
+
+"""
+Kconfig unit testing framework.
+
+This provides fixture functions commonly used from test files.
+"""
+
+import os
+import pytest
+import shutil
+import subprocess
+import tempfile
+
+CONF_PATH = os.path.abspath(os.path.join('scripts', 'kconfig', 'conf'))
+
+
+class Conf:
+ """Kconfig runner and result checker.
+
+ This class provides methods to run text-based interface of Kconfig
+ (scripts/kconfig/conf) and retrieve the resulted configuration,
+ stdout, and stderr. It also provides methods to compare those
+ results with expectations.
+ """
+
+ def __init__(self, request):
+ """Create a new Conf instance.
+
+ request: object to introspect the requesting test module
+ """
+ # the directory of the test being run
+ self._test_dir = os.path.dirname(str(request.fspath))
+
+ # runners
+ def _run_conf(self, mode, dot_config=None, out_file='.config',
+ interactive=False, in_keys=None, extra_env={}):
+ """Run text-based Kconfig executable and save the result.
+
+ mode: input mode option (--oldaskconfig, --defconfig=<file> etc.)
+ dot_config: .config file to use for configuration base
+ out_file: file name to contain the output config data
+ interactive: flag to specify the interactive mode
+ in_keys: key inputs for interactive modes
+ extra_env: additional environments
+ returncode: exit status of the Kconfig executable
+ """
+ command = [CONF_PATH, mode, 'Kconfig']
+
+ # Override 'srctree' environment to make the test as the top directory
+ extra_env['srctree'] = self._test_dir
+
+ # Run Kconfig in a temporary directory.
+ # This directory is automatically removed when done.
+ with tempfile.TemporaryDirectory() as temp_dir:
+
+ # if .config is given, copy it to the working directory
+ if dot_config:
+ shutil.copyfile(os.path.join(self._test_dir, dot_config),
+ os.path.join(temp_dir, '.config'))
+
+ ps = subprocess.Popen(command,
+ stdin=subprocess.PIPE,
+ stdout=subprocess.PIPE,
+ stderr=subprocess.PIPE,
+ cwd=temp_dir,
+ env=dict(os.environ, **extra_env))
+
+ # If input key sequence is given, feed it to stdin.
+ if in_keys:
+ ps.stdin.write(in_keys.encode('utf-8'))
+
+ while ps.poll() is None:
+ # For interactive modes such as oldaskconfig, oldconfig,
+ # send 'Enter' key until the program finishes.
+ if interactive:
+ ps.stdin.write(b'\n')
+
+ self.retcode = ps.returncode
+ self.stdout = ps.stdout.read().decode()
+ self.stderr = ps.stderr.read().decode()
+
+ # Retrieve the resulted config data only when .config is supposed
+ # to exist. If the command fails, the .config does not exist.
+ # 'listnewconfig' does not produce .config in the first place.
+ if self.retcode == 0 and out_file:
+ with open(os.path.join(temp_dir, out_file)) as f:
+ self.config = f.read()
+ else:
+ self.config = None
+
+ # Logging:
+ # Pytest captures the following information by default. In failure
+ # of tests, the captured log will be displayed. This will be useful to
+ # figure out what has happened.
+
+ print("[command]\n{}\n".format(' '.join(command)))
+
+ print("[retcode]\n{}\n".format(self.retcode))
+
+ print("[stdout]")
+ print(self.stdout)
+
+ print("[stderr]")
+ print(self.stderr)
+
+ if self.config is not None:
+ print("[output for '{}']".format(out_file))
+ print(self.config)
+
+ return self.retcode
+
+ def oldaskconfig(self, dot_config=None, in_keys=None):
+ """Run oldaskconfig.
+
+ dot_config: .config file to use for configuration base (optional)
+ in_key: key inputs (optional)
+ returncode: exit status of the Kconfig executable
+ """
+ return self._run_conf('--oldaskconfig', dot_config=dot_config,
+ interactive=True, in_keys=in_keys)
+
+ def oldconfig(self, dot_config=None, in_keys=None):
+ """Run oldconfig.
+
+ dot_config: .config file to use for configuration base (optional)
+ in_key: key inputs (optional)
+ returncode: exit status of the Kconfig executable
+ """
+ return self._run_conf('--oldconfig', dot_config=dot_config,
+ interactive=True, in_keys=in_keys)
+
+ def olddefconfig(self, dot_config=None):
+ """Run olddefconfig.
+
+ dot_config: .config file to use for configuration base (optional)
+ returncode: exit status of the Kconfig executable
+ """
+ return self._run_conf('--olddefconfig', dot_config=dot_config)
+
+ def defconfig(self, defconfig):
+ """Run defconfig.
+
+ defconfig: defconfig file for input
+ returncode: exit status of the Kconfig executable
+ """
+ defconfig_path = os.path.join(self._test_dir, defconfig)
+ return self._run_conf('--defconfig={}'.format(defconfig_path))
+
+ def _allconfig(self, mode, all_config):
+ if all_config:
+ all_config_path = os.path.join(self._test_dir, all_config)
+ extra_env = {'KCONFIG_ALLCONFIG': all_config_path}
+ else:
+ extra_env = {}
+
+ return self._run_conf('--{}config'.format(mode), extra_env=extra_env)
+
+ def allyesconfig(self, all_config=None):
+ """Run allyesconfig.
+
+ all_config: fragment config file for KCONFIG_ALLCONFIG (optional)
+ returncode: exit status of the Kconfig executable
+ """
+ return self._allconfig('allyes', all_config)
+
+ def allmodconfig(self, all_config=None):
+ """Run allmodconfig.
+
+ all_config: fragment config file for KCONFIG_ALLCONFIG (optional)
+ returncode: exit status of the Kconfig executable
+ """
+ return self._allconfig('allmod', all_config)
+
+ def allnoconfig(self, all_config=None):
+ """Run allnoconfig.
+
+ all_config: fragment config file for KCONFIG_ALLCONFIG (optional)
+ returncode: exit status of the Kconfig executable
+ """
+ return self._allconfig('allno', all_config)
+
+ def alldefconfig(self, all_config=None):
+ """Run alldefconfig.
+
+ all_config: fragment config file for KCONFIG_ALLCONFIG (optional)
+ returncode: exit status of the Kconfig executable
+ """
+ return self._allconfig('alldef', all_config)
+
+ def randconfig(self, all_config=None):
+ """Run randconfig.
+
+ all_config: fragment config file for KCONFIG_ALLCONFIG (optional)
+ returncode: exit status of the Kconfig executable
+ """
+ return self._allconfig('rand', all_config)
+
+ def savedefconfig(self, dot_config):
+ """Run savedefconfig.
+
+ dot_config: .config file for input
+ returncode: exit status of the Kconfig executable
+ """
+ return self._run_conf('--savedefconfig', out_file='defconfig')
+
+ def listnewconfig(self, dot_config=None):
+ """Run listnewconfig.
+
+ dot_config: .config file to use for configuration base (optional)
+ returncode: exit status of the Kconfig executable
+ """
+ return self._run_conf('--listnewconfig', dot_config=dot_config,
+ out_file=None)
+
+ # checkers
+ def _read_and_compare(self, compare, expected):
+ """Compare the result with expectation.
+
+ compare: function to compare the result with expectation
+ expected: file that contains the expected data
+ """
+ with open(os.path.join(self._test_dir, expected)) as f:
+ expected_data = f.read()
+ return compare(self, expected_data)
+
+ def _contains(self, attr, expected):
+ return self._read_and_compare(
+ lambda s, e: getattr(s, attr).find(e) >= 0,
+ expected)
+
+ def _matches(self, attr, expected):
+ return self._read_and_compare(lambda s, e: getattr(s, attr) == e,
+ expected)
+
+ def config_contains(self, expected):
+ """Check if resulted configuration contains expected data.
+
+ expected: file that contains the expected data
+ returncode: True if result contains the expected data, False otherwise
+ """
+ return self._contains('config', expected)
+
+ def config_matches(self, expected):
+ """Check if resulted configuration exactly matches expected data.
+
+ expected: file that contains the expected data
+ returncode: True if result matches the expected data, False otherwise
+ """
+ return self._matches('config', expected)
+
+ def stdout_contains(self, expected):
+ """Check if resulted stdout contains expected data.
+
+ expected: file that contains the expected data
+ returncode: True if result contains the expected data, False otherwise
+ """
+ return self._contains('stdout', expected)
+
+ def stdout_matches(self, expected):
+ """Check if resulted stdout exactly matches expected data.
+
+ expected: file that contains the expected data
+ returncode: True if result matches the expected data, False otherwise
+ """
+ return self._matches('stdout', expected)
+
+ def stderr_contains(self, expected):
+ """Check if resulted stderr contains expected data.
+
+ expected: file that contains the expected data
+ returncode: True if result contains the expected data, False otherwise
+ """
+ return self._contains('stderr', expected)
+
+ def stderr_matches(self, expected):
+ """Check if resulted stderr exactly matches expected data.
+
+ expected: file that contains the expected data
+ returncode: True if result matches the expected data, False otherwise
+ """
+ return self._matches('stderr', expected)
+
+
+@pytest.fixture(scope="module")
+def conf(request):
+ """Create a Conf instance and provide it to test functions."""
+ return Conf(request)