enhancement: add new test loader and its test cases, for test cases o…

…f backends

tests/backend/common.py

@@ -0,0 +1,51 @@
+#
+# Copyright (C) 2023, 2024 Satoru SATOH <satoru.satoh gmail.com>
+# SPDX-License-Identifier: MIT
+#
+# pylint: disable=missing-docstring,too-few-public-methods
+r"""Common functions for test cases of loaders and dumpers."""
+from __future__ import annotations
+
+import pathlib
+import re
+import typing
+
+from .. import common
+
+
+PATH_PATTERN: re.Pattern = re.compile(
+    r".+[/\\:\.]test_([^_]+)_([^_]+).py"
+)
+
+
+def get_test_resdir(
+    testfile: str,
+    is_loader: bool = True,
+    pattern: re.Pattern = PATH_PATTERN
+) -> pathlib.Path:
+    """Get test resource dir for given test file path.
+
+    ex. tests/backend/loaders/json/test_json_stdlib.py
+    -> tests/res/1/loaders/json.stdlib/
+    """
+    match = pattern.match(testfile)
+    if not match:
+        raise NameError(
+            f"Filename does not match expected pattern: {testfile}"
+        )
+
+    name = ".".join(match.groups())
+    subdir = "loaders" if is_loader else "dumpers"
+
+    return common.RESOURCE_DIR / subdir / name
+
+
+def load_data_for_testfile(
+    testfile: str,
+    is_loader: bool = True,
+    **opts
+) -> list[tuple[pathlib.Path, dict[str, typing.Any], ...]]:
+    datadir = get_test_resdir(testfile, is_loader=is_loader)
+    return common.load_data_for_testfile(
+        testfile, datadir=datadir, **opts
+    )

tests/backend/test_common.py

@@ -0,0 +1,28 @@
+#
+# Copyright (C) 2024 Satoru SATOH <satoru.satoh gmail.com>
+# SPDX-License-Identifier: MIT
+#
+# pylint: disable=missing-docstring,too-few-public-methods
+r"""Test cases for Test Data Collecor."""
+from __future__ import annotations
+
+import pathlib
+
+import pytest
+
+from . import common as TT
+
+
+CURDIR: pathlib.Path = pathlib.Path(__file__).parent
+TESTFILE = CURDIR / "loaders" / "json" / "test_json_stdlib.py"
+
+TEST_DATADIR = TT.common.RESOURCE_DIR / "loaders" / "json.stdlib"
+
+
+@pytest.mark.parametrize(
+    ("path", "is_loader", "exp"),
+    ((str(TESTFILE), True, TEST_DATADIR),
+     ),
+)
+def test_get_test_resdir(path, is_loader, exp):
+    assert TT.get_test_resdir(path, is_loader) == exp