95 lines
3.0 KiB
Python
95 lines
3.0 KiB
Python
"""Unit tests for hello.py module."""
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import subprocess
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import unittest
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from pathlib import Path
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class TestHelloOutput(unittest.TestCase):
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"""Tests for hello.py output behavior."""
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def setUp(self):
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"""Set up test fixtures."""
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self.hello_script = Path(__file__).parent.parent / "hello.py"
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self.working_dir = Path(__file__).parent.parent
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def test_hello_prints_expected_message(self):
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"""Test that hello.py prints 'Hello, World!' to stdout."""
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result = subprocess.run(
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["python3", str(self.hello_script)],
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capture_output=True,
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text=True,
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cwd=self.working_dir
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)
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self.assertIn("Hello, World!", result.stdout)
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def test_hello_exact_output(self):
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"""Test that hello.py output matches exactly (with newline)."""
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result = subprocess.run(
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["python3", str(self.hello_script)],
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capture_output=True,
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text=True,
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cwd=self.working_dir
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)
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self.assertEqual(result.stdout.strip(), "Hello, World!")
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def test_hello_exit_code_zero(self):
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"""Test that hello.py exits with code 0."""
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result = subprocess.run(
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["python3", str(self.hello_script)],
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capture_output=True,
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text=True,
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cwd=self.working_dir
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)
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self.assertEqual(result.returncode, 0)
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def test_hello_no_stderr(self):
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"""Test that hello.py produces no stderr output."""
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result = subprocess.run(
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["python3", str(self.hello_script)],
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capture_output=True,
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text=True,
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cwd=self.working_dir
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)
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self.assertEqual(result.stderr, "")
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def test_hello_stdout_not_empty(self):
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"""Test that hello.py produces non-empty stdout."""
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result = subprocess.run(
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["python3", str(self.hello_script)],
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capture_output=True,
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text=True,
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cwd=self.working_dir
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)
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self.assertTrue(len(result.stdout) > 0)
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class TestHelloFileExists(unittest.TestCase):
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"""Tests for hello.py file existence and content."""
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def setUp(self):
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"""Set up test fixtures."""
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self.hello_script = Path(__file__).parent.parent / "hello.py"
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def test_hello_file_exists(self):
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"""Test that hello.py file exists."""
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self.assertTrue(self.hello_script.exists())
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def test_hello_file_is_python(self):
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"""Test that hello.py has .py extension."""
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self.assertEqual(self.hello_script.suffix, ".py")
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def test_hello_file_contains_print(self):
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"""Test that hello.py contains a print statement."""
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content = self.hello_script.read_text()
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self.assertIn("print", content)
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def test_hello_file_contains_hello_world(self):
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"""Test that hello.py contains 'Hello, World!' string."""
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content = self.hello_script.read_text()
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self.assertIn("Hello, World!", content)
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if __name__ == "__main__":
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unittest.main()
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