[PATCH 4/5] kunit: tool: drop last uses of collections.namedtuple

From: Daniel Latypov
Date: Tue Jan 18 2022 - 14:09:42 EST


Since we formally require python3.7+ since commit df4b0807ca1a
("kunit: tool: Assert the version requirement"), we can just use
@dataclasses.dataclass instead.

In kunit_config.py, we used namedtuple to create a hashable type that
had `name` and `value` fields and had to subclass it to define a custom
`__str__()`.
@datalcass lets us just define one type instead.

In qemu_config.py, we use namedtuple to allow modules to define various
parameters. Using @dataclass, we can add type-annotations for all these
fields, making our code more typesafe and making it easier for users to
figure out how to define new configs.

Signed-off-by: Daniel Latypov <dlatypov@xxxxxxxxxx>
---
tools/testing/kunit/kunit_config.py | 9 +++++----
tools/testing/kunit/qemu_config.py | 17 ++++++++++-------
2 files changed, 15 insertions(+), 11 deletions(-)

diff --git a/tools/testing/kunit/kunit_config.py b/tools/testing/kunit/kunit_config.py
index 677354546156..ca33e4b7bcc5 100644
--- a/tools/testing/kunit/kunit_config.py
+++ b/tools/testing/kunit/kunit_config.py
@@ -6,16 +6,17 @@
# Author: Felix Guo <felixguoxiuping@xxxxxxxxx>
# Author: Brendan Higgins <brendanhiggins@xxxxxxxxxx>

-import collections
+from dataclasses import dataclass
import re
from typing import List, Set

CONFIG_IS_NOT_SET_PATTERN = r'^# CONFIG_(\w+) is not set$'
CONFIG_PATTERN = r'^CONFIG_(\w+)=(\S+|".*")$'

-KconfigEntryBase = collections.namedtuple('KconfigEntryBase', ['name', 'value'])
-
-class KconfigEntry(KconfigEntryBase):
+@dataclass(frozen=True)
+class KconfigEntry:
+ name: str
+ value: str

def __str__(self) -> str:
if self.value == 'n':
diff --git a/tools/testing/kunit/qemu_config.py b/tools/testing/kunit/qemu_config.py
index 1672f6184e95..0b6a80398ccc 100644
--- a/tools/testing/kunit/qemu_config.py
+++ b/tools/testing/kunit/qemu_config.py
@@ -5,12 +5,15 @@
# Copyright (C) 2021, Google LLC.
# Author: Brendan Higgins <brendanhiggins@xxxxxxxxxx>

-from collections import namedtuple
+from dataclasses import dataclass
+from typing import List


-QemuArchParams = namedtuple('QemuArchParams', ['linux_arch',
- 'kconfig',
- 'qemu_arch',
- 'kernel_path',
- 'kernel_command_line',
- 'extra_qemu_params'])
+@dataclass(frozen=True)
+class QemuArchParams:
+ linux_arch: str
+ kconfig: str
+ qemu_arch: str
+ kernel_path: str
+ kernel_command_line: str
+ extra_qemu_params: List[str]
--
2.34.1.703.g22d0c6ccf7-goog