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![Marc-André Lureau](/assets/img/avatar_default.png)
gdbus-codegen doesn't support conditions or pre-processing. Rather than duplicating D-Bus interfaces for win32 adaptation, let's have a preprocess step, so we can have platform-specific interfaces. The python script is based on https://github.com/peitaosu/XML-Preprocessor, with bug fixes, some testing and replacing lxml dependency with the built-in xml module. This preprocessing syntax style is not very common, but is similar to the one provided by WiX (https://wixtoolset.org/docs/v3/overview/preprocessor/) or wixl, that we adopted in QEMU for packaging the guest agent. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <20230606115658.677673-5-marcandre.lureau@redhat.com>
137 lines
5 KiB
Python
137 lines
5 KiB
Python
#!/usr/bin/env python3
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#
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# Copyright (c) 2023 Red Hat, Inc.
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#
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# SPDX-License-Identifier: MIT
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"""Unit tests for xml-preprocess"""
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import contextlib
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import importlib
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import os
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import platform
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import subprocess
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import tempfile
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import unittest
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from io import StringIO
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xmlpp = importlib.import_module("xml-preprocess")
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class TestXmlPreprocess(unittest.TestCase):
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"""Tests for xml-preprocess.Preprocessor"""
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def test_preprocess_xml(self):
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with tempfile.NamedTemporaryFile(mode="w", delete=False) as temp_file:
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temp_file.write("<root></root>")
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temp_file_name = temp_file.name
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result = xmlpp.preprocess_xml(temp_file_name)
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self.assertEqual(result, "<root></root>")
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os.remove(temp_file_name)
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def test_save_xml(self):
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with tempfile.NamedTemporaryFile(mode="w", delete=False) as temp_file:
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temp_file_name = temp_file.name
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xmlpp.save_xml("<root></root>", temp_file_name)
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self.assertTrue(os.path.isfile(temp_file_name))
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os.remove(temp_file_name)
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def test_include(self):
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with tempfile.NamedTemporaryFile(mode="w", delete=False) as inc_file:
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inc_file.write("<included>Content from included file</included>")
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inc_file_name = inc_file.name
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xml_str = f"<?include {inc_file_name} ?>"
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expected = "<included>Content from included file</included>"
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xpp = xmlpp.Preprocessor()
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result = xpp.preprocess(xml_str)
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self.assertEqual(result, expected)
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os.remove(inc_file_name)
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self.assertRaises(FileNotFoundError, xpp.preprocess, xml_str)
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def test_envvar(self):
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os.environ["TEST_ENV_VAR"] = "TestValue"
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xml_str = "<root>$(env.TEST_ENV_VAR)</root>"
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expected = "<root>TestValue</root>"
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xpp = xmlpp.Preprocessor()
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result = xpp.preprocess(xml_str)
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self.assertEqual(result, expected)
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self.assertRaises(KeyError, xpp.preprocess, "$(env.UNKNOWN)")
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def test_sys_var(self):
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xml_str = "<root>$(sys.ARCH)</root>"
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expected = f"<root>{platform.architecture()[0]}</root>"
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xpp = xmlpp.Preprocessor()
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result = xpp.preprocess(xml_str)
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self.assertEqual(result, expected)
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self.assertRaises(KeyError, xpp.preprocess, "$(sys.UNKNOWN)")
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def test_cus_var(self):
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xml_str = "<root>$(var.USER)</root>"
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expected = "<root></root>"
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xpp = xmlpp.Preprocessor()
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result = xpp.preprocess(xml_str)
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self.assertEqual(result, expected)
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xml_str = "<?define USER=FOO?><root>$(var.USER)</root>"
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expected = "<root>FOO</root>"
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xpp = xmlpp.Preprocessor()
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result = xpp.preprocess(xml_str)
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self.assertEqual(result, expected)
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def test_error_warning(self):
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xml_str = "<root><?warning \"test warn\"?></root>"
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expected = "<root></root>"
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xpp = xmlpp.Preprocessor()
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out = StringIO()
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with contextlib.redirect_stdout(out):
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result = xpp.preprocess(xml_str)
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self.assertEqual(result, expected)
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self.assertEqual(out.getvalue(), "[Warning]: test warn\n")
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self.assertRaises(RuntimeError, xpp.preprocess, "<?error \"test\"?>")
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def test_cmd(self):
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xpp = xmlpp.Preprocessor()
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result = xpp.preprocess('<root><?cmd "echo hello world"?></root>')
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self.assertEqual(result, "<root>hello world</root>")
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self.assertRaises(
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subprocess.CalledProcessError,
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xpp.preprocess, '<?cmd "test-unknown-cmd"?>'
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)
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def test_foreach(self):
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xpp = xmlpp.Preprocessor()
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result = xpp.preprocess(
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'<root><?foreach x in a;b;c?>$(var.x)<?endforeach?></root>'
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)
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self.assertEqual(result, "<root>abc</root>")
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def test_if_elseif(self):
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xpp = xmlpp.Preprocessor()
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result = xpp.preprocess('<root><?if True?>ok<?endif?></root>')
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self.assertEqual(result, "<root>ok</root>")
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result = xpp.preprocess('<root><?if False?>ok<?endif?></root>')
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self.assertEqual(result, "<root></root>")
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result = xpp.preprocess('<root><?if True?>ok<?else?>ko<?endif?></root>')
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self.assertEqual(result, "<root>ok</root>")
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result = xpp.preprocess('<root><?if False?>ok<?else?>ko<?endif?></root>')
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self.assertEqual(result, "<root>ko</root>")
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result = xpp.preprocess(
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'<root><?if False?>ok<?elseif True?>ok2<?else?>ko<?endif?></root>'
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)
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self.assertEqual(result, "<root>ok2</root>")
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result = xpp.preprocess(
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'<root><?if False?>ok<?elseif False?>ok<?else?>ko<?endif?></root>'
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)
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self.assertEqual(result, "<root>ko</root>")
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def test_ifdef(self):
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xpp = xmlpp.Preprocessor()
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result = xpp.preprocess('<root><?ifdef USER?>ok<?else?>ko<?endif?></root>')
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self.assertEqual(result, "<root>ko</root>")
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result = xpp.preprocess(
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'<?define USER=FOO?><root><?ifdef USER?>ok<?else?>ko<?endif?></root>'
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)
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self.assertEqual(result, "<root>ok</root>")
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if __name__ == "__main__":
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unittest.main()
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