add windows-specific tests for shell_{quote,split}

tests/util_test.py

@@ -0,0 +1,54 @@
+# Copyright 2022 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import sys
+
+from nanoemoji.util import shell_quote, shell_split
+
+import pytest
+
+
+# Source:
+# https://github.com/python/cpython/blob/653e563/Lib/test/test_subprocess.py#L1198-L1214
+LIST2CMDLINE_TEST_DATA = [
+    (["a b c", "d", "e"], '"a b c" d e'),
+    (['ab"c', "\\", "d"], 'ab\\"c \\ d'),
+    (['ab"c', " \\", "d"], 'ab\\"c " \\\\" d'),
+    (["a\\\\\\b", "de fg", "h"], 'a\\\\\\b "de fg" h'),
+    (['a\\"b', "c", "d"], 'a\\\\\\"b c d'),
+    (["a\\\\b c", "d", "e"], '"a\\\\b c" d e'),
+    (["a\\\\b\\ c", "d", "e"], '"a\\\\b\\ c" d e'),
+    (["ab", ""], 'ab ""'),
+]
+CMDLINE2LIST_TEST_DATA = [(cmdline, args) for args, cmdline in LIST2CMDLINE_TEST_DATA]
+
+
+@pytest.mark.skipif(not sys.platform.startswith("win"), reason="Windows only")
+@pytest.mark.parametrize(
+    "args, expected_cmdline",
+    LIST2CMDLINE_TEST_DATA,
+    ids=[s for _, s in LIST2CMDLINE_TEST_DATA],
+)
+def test_windows_shell_quote(args, expected_cmdline):
+    assert " ".join(shell_quote(s) for s in args) == expected_cmdline
+
+
+@pytest.mark.skipif(not sys.platform.startswith("win"), reason="Windows only")
+@pytest.mark.parametrize(
+    "cmdline, expected_args",
+    CMDLINE2LIST_TEST_DATA,
+    ids=[s for s, _ in CMDLINE2LIST_TEST_DATA],
+)
+def test_windows_shell_split(cmdline, expected_args):
+    assert shell_split(cmdline) == expected_args