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117 lines
4.2 KiB
Python
117 lines
4.2 KiB
Python
#!/usr/bin/env vpython3
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# Copyright (c) 2022 The Chromium Authors. All rights reserved.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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import argparse
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import unittest
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import sys
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import os
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import io
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import tempfile
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from unittest.mock import patch
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ROOT_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
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sys.path.insert(0, ROOT_DIR)
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import create_temp_file
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class TestCreateTempFileFromStdin(unittest.TestCase):
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def setUp(self):
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"""Set up test environment: capture stdout and stderr."""
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self.held_stdout = sys.stdout
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self.held_stderr = sys.stderr
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self.new_stdout = io.StringIO()
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self.new_stderr = io.StringIO()
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sys.stdout = self.new_stdout
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sys.stderr = self.new_stderr
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def tearDown(self):
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"""Clean up test environment: restore stdout and stderr."""
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sys.stdout = self.held_stdout
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sys.stderr = self.held_stderr
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def _read_content_and_delete_file(self, file_path):
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"""Helper to read content of a temporary file."""
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with open(file_path, 'r', encoding='utf-8') as f:
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ret = f.read()
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os.remove(file_path)
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return ret
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@patch('sys.stdin', new_callable=io.StringIO)
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def test_basic_text_input(self, mock_stdin):
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"""Test with basic multi-line text input."""
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test_content = "Hello, world!\nThis is a test.\n"
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mock_stdin.write(test_content)
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mock_stdin.seek(0) # Rewind the mock stdin to the beginning
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create_temp_file.run()
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# Get the output printed to stdout (the temp file path)
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output = self.new_stdout.getvalue().strip()
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self.assertTrue(os.path.exists(output)) # Check if file was created
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# Verify content
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file_content = self._read_content_and_delete_file(output)
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self.assertEqual(self.new_stderr.getvalue(), "") # No errors on stderr
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self.assertEqual(file_content, test_content)
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@patch('sys.stdin', new_callable=io.StringIO)
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def test_empty_input(self, mock_stdin):
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"""Test with empty input from stdin."""
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test_content = ""
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mock_stdin.write(test_content)
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mock_stdin.seek(0)
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create_temp_file.run()
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output = self.new_stdout.getvalue().strip()
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self.assertTrue(os.path.exists(output)) # File should still be created
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file_content = self._read_content_and_delete_file(output)
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self.assertEqual(file_content, test_content)
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self.assertFalse(os.path.exists(output))
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self.assertEqual(self.new_stderr.getvalue(), "")
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@patch('sys.stdin', new_callable=io.StringIO)
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def test_with_prefix(self, mock_stdin):
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"""Test if the --prefix argument is respected."""
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test_content = "Prefix test content.\n"
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mock_stdin.write(test_content)
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mock_stdin.seek(0)
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# Simulate argparse.args
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mock_args = argparse.Namespace(prefix="myprefix_", suffix=None)
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with patch('argparse.ArgumentParser.parse_args',
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return_value=mock_args):
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create_temp_file.run(prefix=mock_args.prefix)
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output = self.new_stdout.getvalue().strip()
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self.assertTrue(os.path.exists(output))
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self.assertTrue(os.path.basename(output).startswith("myprefix_"))
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file_content = self._read_content_and_delete_file(output)
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self.assertEqual(file_content, test_content)
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@patch('sys.stdin', new_callable=io.StringIO)
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def test_with_suffix(self, mock_stdin):
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"""Test if the --suffix argument is respected."""
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test_content = "Suffix test content.\n"
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mock_stdin.write(test_content)
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mock_stdin.seek(0)
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# Simulate argparse.args
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mock_args = argparse.Namespace(prefix=None, suffix=".log")
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with patch('argparse.ArgumentParser.parse_args',
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return_value=mock_args):
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create_temp_file.run(suffix=mock_args.suffix)
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output = self.new_stdout.getvalue().strip()
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self.assertTrue(os.path.exists(output))
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self.assertTrue(os.path.basename(output).endswith(".log"))
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file_content = self._read_content_and_delete_file(output)
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self.assertEqual(file_content, test_content)
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if __name__ == '__main__':
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unittest.main()
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