mirror of
https://github.com/kuhyx/testsAndMisc.git
synced 2026-11-10 22:27:01 +01:00
Krzysztof kuhy Rudnicki
2d0d69b461
New python_pkg/code_tutor package that turns an unfamiliar codebase into an interactive lesson: analyse code into items (_analyzer), order them dependency-first (_plan_builder), pose reimplement challenges (_challenge + _challenge_support), verify user implementations with tests and coverage (_verifier), track progress (_progress/_session), and offer local-LLM hints (_llm), driven by a Typer/Rich CLI (cli). - meta/pyproject.toml + .pre-commit-config.yaml + meta/requirements.txt: add anthropic/rich/typer deps, a cli.py per-file-ignore (Typer B008 etc), and code_tutor-specific ruff/pylint/mypy tuning. - _challenge.py and its tests are split across _challenge_support.py and test_challenge_part2/part3.py to stay under the 500-line file cap. Verification: pytest 631 passed at 100% line+branch coverage; every file <=500 lines; pre-commit (ruff ALL, mypy strict, pylint 10/10, bandit, evidence + multi-file contract) green. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_017RRCdR4D8SaVrN2xraMQxM
347 lines
12 KiB
Python
347 lines
12 KiB
Python
"""Tests for python_pkg.code_tutor._challenge_support -- part 1.
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Covers the test-discovery and pytest-execution helpers:
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``_scan_test_file``, ``_find_tests``, ``_show_test_panels``,
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``_collect_lines``, ``_project_root``, ``_pytest_clean`` and
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``_patch_and_test``.
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"""
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from __future__ import annotations
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from pathlib import Path
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from unittest.mock import MagicMock, patch
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from python_pkg.code_tutor._challenge_support import (
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_collect_lines,
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_find_tests,
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_patch_and_test,
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_project_root,
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_pytest_clean,
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_scan_test_file,
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_show_test_panels,
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)
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from python_pkg.code_tutor.tests.conftest import _item
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# ---------------------------------------------------------------------------
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# _scan_test_file
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# ---------------------------------------------------------------------------
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def test_scan_test_file_module_function_match() -> None:
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source = "def test_fn_does_thing():\n fn(1)\n"
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result = _scan_test_file(source, "fn")
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assert "test_fn_does_thing" in result
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def test_scan_test_file_class_method_match() -> None:
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source = "class TestFoo:\n def test_fn_works(self):\n fn()\n"
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result = _scan_test_file(source, "fn")
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assert any("test_fn_works" in r for r in result)
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def test_scan_test_file_no_match() -> None:
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source = "def test_other():\n other()\n"
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result = _scan_test_file(source, "fn")
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assert result == []
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def test_scan_test_file_syntax_error() -> None:
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result = _scan_test_file("def (broken):", "fn")
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assert result == []
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def test_scan_test_file_non_test_function_skipped() -> None:
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source = "def helper_fn():\n fn()\n"
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result = _scan_test_file(source, "fn")
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assert result == []
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# ---------------------------------------------------------------------------
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# _find_tests
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# ---------------------------------------------------------------------------
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def test_find_tests_found(tmp_path: Path) -> None:
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(tmp_path / "test_mod.py").write_text(
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"def test_fn_works():\n fn()\n", encoding="utf-8"
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)
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result = _find_tests(_item(), tmp_path)
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assert len(result) == 1
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assert result[0][1] == ["test_fn_works"]
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def test_find_tests_no_name_in_source(tmp_path: Path) -> None:
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(tmp_path / "test_other.py").write_text(
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"def test_other_works():\n other()\n", encoding="utf-8"
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)
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result = _find_tests(_item(), tmp_path)
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assert result == []
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def test_find_tests_oserror(tmp_path: Path) -> None:
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test_file = tmp_path / "test_mod.py"
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test_file.write_text("def test_fn(): fn()\n", encoding="utf-8")
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with patch("pathlib.Path.read_text", side_effect=OSError("perm")):
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result = _find_tests(_item(), tmp_path)
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assert result == []
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def test_find_tests_no_matching_node_ids(tmp_path: Path) -> None:
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# File mentions 'fn' in source but not in test function bodies
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(tmp_path / "test_mod.py").write_text(
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"# fn is mentioned here\ndef test_other():\n pass\n", encoding="utf-8"
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)
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result = _find_tests(_item(), tmp_path)
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assert result == []
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# ---------------------------------------------------------------------------
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# _show_test_panels
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# ---------------------------------------------------------------------------
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def test_show_test_panels_normal(tmp_path: Path) -> None:
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source = "def test_fn():\n fn(1)\n assert True\n"
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test_file = tmp_path / "test_mod.py"
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test_file.write_text(source, encoding="utf-8")
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mock_console = MagicMock()
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with patch("python_pkg.code_tutor._challenge_support.Syntax"):
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_show_test_panels([(test_file, ["test_fn"])], mock_console)
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assert mock_console.print.called
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def test_show_test_panels_class_method(tmp_path: Path) -> None:
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source = "class TestFoo:\n def test_fn(self):\n fn()\n"
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test_file = tmp_path / "test_mod.py"
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test_file.write_text(source, encoding="utf-8")
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mock_console = MagicMock()
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with patch("python_pkg.code_tutor._challenge_support.Syntax"):
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_show_test_panels([(test_file, ["TestFoo::test_fn"])], mock_console)
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assert mock_console.print.called
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def test_show_test_panels_oserror(tmp_path: Path) -> None:
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test_file = tmp_path / "test_mod.py"
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test_file.write_text("def test_fn(): pass\n", encoding="utf-8")
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mock_console = MagicMock()
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with patch("pathlib.Path.read_text", side_effect=OSError("perm")):
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_show_test_panels([(test_file, ["test_fn"])], mock_console)
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mock_console.print.assert_not_called()
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def test_show_test_panels_node_not_in_func_names(tmp_path: Path) -> None:
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source = "def test_fn():\n fn()\n"
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test_file = tmp_path / "test_mod.py"
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test_file.write_text(source, encoding="utf-8")
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mock_console = MagicMock()
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with patch("python_pkg.code_tutor._challenge_support.Syntax"):
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# Pass a node_id that doesn't match any function name
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_show_test_panels([(test_file, ["test_other"])], mock_console)
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mock_console.print.assert_not_called()
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# ---------------------------------------------------------------------------
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# _collect_lines
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# ---------------------------------------------------------------------------
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def test_collect_lines_end() -> None:
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responses = iter(["line one", "line two", "END"])
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mock_console = MagicMock()
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result = _collect_lines("prompt", mock_console, lambda _: next(responses))
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assert result == "line one\nline two"
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def test_collect_lines_skip() -> None:
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mock_console = MagicMock()
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result = _collect_lines("prompt", mock_console, lambda _: "skip")
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assert result is None
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# ---------------------------------------------------------------------------
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# _project_root
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# ---------------------------------------------------------------------------
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def test_project_root_finds_pyproject(tmp_path: Path) -> None:
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(tmp_path / "pyproject.toml").write_text("[project]", encoding="utf-8")
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sub = tmp_path / "src" / "pkg"
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sub.mkdir(parents=True)
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result = _project_root(sub)
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assert result == tmp_path
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def test_project_root_finds_setup_py(tmp_path: Path) -> None:
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(tmp_path / "setup.py").write_text("# setup", encoding="utf-8")
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result = _project_root(tmp_path)
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assert result == tmp_path
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def test_project_root_not_found(tmp_path: Path) -> None:
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# Create a dir deep inside tmp_path with no pyproject/setup
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deep = tmp_path / "a" / "b" / "c"
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deep.mkdir(parents=True)
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# Walk up to root (tmp_path's parent and above) without finding the files
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# We need a completely isolated path — create one without any pyproject.toml
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import tempfile
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with tempfile.TemporaryDirectory() as td:
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isolated = Path(td) / "pkg"
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isolated.mkdir()
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result = _project_root(isolated)
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# When not found, returns start.resolve()
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assert result == isolated.resolve()
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# ---------------------------------------------------------------------------
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# _pytest_clean
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# ---------------------------------------------------------------------------
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def test_pytest_clean_pass() -> None:
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mock_result = MagicMock()
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mock_result.returncode = 0
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mock_result.stdout = "1 passed"
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mock_result.stderr = ""
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mock_console = MagicMock()
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with patch(
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"python_pkg.code_tutor._challenge_support.subprocess.run",
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return_value=mock_result,
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):
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assert (
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_pytest_clean(["test_mod.py::test_fn"], Path("/proj"), mock_console) is True
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)
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def test_pytest_clean_fail() -> None:
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mock_result = MagicMock()
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mock_result.returncode = 1
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mock_result.stdout = ""
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mock_result.stderr = "FAILED"
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mock_console = MagicMock()
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with patch(
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"python_pkg.code_tutor._challenge_support.subprocess.run",
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return_value=mock_result,
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):
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assert (
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_pytest_clean(["test_mod.py::test_fn"], Path("/proj"), mock_console)
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is False
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)
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def test_pytest_clean_no_output() -> None:
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mock_result = MagicMock()
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mock_result.returncode = 0
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mock_result.stdout = ""
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mock_result.stderr = ""
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mock_console = MagicMock()
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with patch(
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"python_pkg.code_tutor._challenge_support.subprocess.run",
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return_value=mock_result,
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):
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_pytest_clean([], Path("/proj"), mock_console)
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mock_console.print.assert_not_called()
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# ---------------------------------------------------------------------------
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# _patch_and_test
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# ---------------------------------------------------------------------------
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def test_patch_and_test_syntax_error(tmp_path: Path) -> None:
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source = "def fn():\n return 1\n"
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(tmp_path / "mod.py").write_text(source, encoding="utf-8")
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mock_console = MagicMock()
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result = _patch_and_test(
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_item(file="mod.py", start=1, end=2),
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str(tmp_path),
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"def fn(\n broken syntax",
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[],
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mock_console,
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)
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assert result is False
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# Original file should be restored
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assert (tmp_path / "mod.py").read_text(encoding="utf-8") == source
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def test_patch_and_test_passes(tmp_path: Path) -> None:
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source = "def fn():\n return 1\n"
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(tmp_path / "mod.py").write_text(source, encoding="utf-8")
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test_file = tmp_path / "test_mod.py"
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test_file.write_text("def test_fn(): pass\n", encoding="utf-8")
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mock_console = MagicMock()
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with patch(
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"python_pkg.code_tutor._challenge_support._pytest_clean", return_value=True
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):
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result = _patch_and_test(
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_item(file="mod.py", start=1, end=2),
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str(tmp_path),
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"def fn():\n return 99",
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[(test_file, ["test_fn"])],
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mock_console,
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)
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assert result is True
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# File restored
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assert (tmp_path / "mod.py").read_text(encoding="utf-8") == source
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def test_patch_and_test_fails(tmp_path: Path) -> None:
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source = "def fn():\n return 1\n"
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(tmp_path / "mod.py").write_text(source, encoding="utf-8")
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test_file = tmp_path / "test_mod.py"
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test_file.write_text("def test_fn(): pass\n", encoding="utf-8")
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mock_console = MagicMock()
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with patch(
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"python_pkg.code_tutor._challenge_support._pytest_clean", return_value=False
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):
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result = _patch_and_test(
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_item(file="mod.py", start=1, end=2),
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str(tmp_path),
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"def fn():\n return 0",
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[(test_file, ["test_fn"])],
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mock_console,
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)
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assert result is False
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assert (tmp_path / "mod.py").read_text(encoding="utf-8") == source
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def test_scan_test_file_non_func_non_class_toplevel() -> None:
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"""Skip a top-level node that is neither a function nor a class def.
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A module-level ``import`` fails both ``isinstance`` checks, exercising
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the branch that falls through the ``elif ClassDef`` back to the loop.
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"""
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source = "import os\ndef test_fn_uses_fn():\n fn()\n"
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result = _scan_test_file(source, "fn")
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assert result == ["test_fn_uses_fn"]
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def test_show_test_panels_non_func_non_class_toplevel(tmp_path: Path) -> None:
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"""Skip a top-level node that is neither a function nor a class def.
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A module-level ``import`` yields an empty ``nodes`` list, so the
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``elif ClassDef`` branch is not taken before the inner render loop.
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"""
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source = "import os\ndef test_fn():\n fn(1)\n"
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test_file = tmp_path / "test_mod.py"
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test_file.write_text(source, encoding="utf-8")
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mock_console = MagicMock()
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with patch("python_pkg.code_tutor._challenge_support.Syntax"):
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_show_test_panels([(test_file, ["test_fn"])], mock_console)
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assert mock_console.print.called
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def test_show_test_panels_class_non_func_member(tmp_path: Path) -> None:
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"""Skip a class-body member that is not a function definition.
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The class-level ``attr = 1`` assignment fails the member ``isinstance``
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check, exercising the branch that loops back to the next body member.
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"""
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source = "class TestFoo:\n attr = 1\n def test_fn(self):\n fn()\n"
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test_file = tmp_path / "test_mod.py"
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test_file.write_text(source, encoding="utf-8")
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mock_console = MagicMock()
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with patch("python_pkg.code_tutor._challenge_support.Syntax"):
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_show_test_panels([(test_file, ["TestFoo::test_fn"])], mock_console)
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assert mock_console.print.called
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