111 lines
3.3 KiB
Python
111 lines
3.3 KiB
Python
import sys
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from textwrap import dedent
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from typing import Generator
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from typing import List
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from typing import Optional
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import pytest
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from _pytest.pytester import Pytester
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@pytest.fixture()
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def file_structure(pytester: Pytester) -> None:
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pytester.makepyfile(
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test_foo="""
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from foo import foo
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def test_foo():
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assert foo() == 1
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"""
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)
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pytester.makepyfile(
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test_bar="""
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from bar import bar
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def test_bar():
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assert bar() == 2
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"""
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)
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foo_py = pytester.mkdir("sub") / "foo.py"
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content = dedent(
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"""
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def foo():
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return 1
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"""
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)
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foo_py.write_text(content, encoding="utf-8")
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bar_py = pytester.mkdir("sub2") / "bar.py"
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content = dedent(
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"""
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def bar():
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return 2
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"""
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)
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bar_py.write_text(content, encoding="utf-8")
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def test_one_dir(pytester: Pytester, file_structure) -> None:
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pytester.makefile(".ini", pytest="[pytest]\npythonpath=sub\n")
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result = pytester.runpytest("test_foo.py")
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assert result.ret == 0
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result.assert_outcomes(passed=1)
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def test_two_dirs(pytester: Pytester, file_structure) -> None:
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pytester.makefile(".ini", pytest="[pytest]\npythonpath=sub sub2\n")
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result = pytester.runpytest("test_foo.py", "test_bar.py")
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assert result.ret == 0
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result.assert_outcomes(passed=2)
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def test_module_not_found(pytester: Pytester, file_structure) -> None:
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"""Without the pythonpath setting, the module should not be found."""
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pytester.makefile(".ini", pytest="[pytest]\n")
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result = pytester.runpytest("test_foo.py")
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assert result.ret == pytest.ExitCode.INTERRUPTED
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result.assert_outcomes(errors=1)
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expected_error = "E ModuleNotFoundError: No module named 'foo'"
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result.stdout.fnmatch_lines([expected_error])
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def test_no_ini(pytester: Pytester, file_structure) -> None:
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"""If no ini file, test should error."""
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result = pytester.runpytest("test_foo.py")
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assert result.ret == pytest.ExitCode.INTERRUPTED
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result.assert_outcomes(errors=1)
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expected_error = "E ModuleNotFoundError: No module named 'foo'"
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result.stdout.fnmatch_lines([expected_error])
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def test_clean_up(pytester: Pytester) -> None:
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"""Test that the plugin cleans up after itself."""
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# This is tough to test behaviorally because the cleanup really runs last.
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# So the test make several implementation assumptions:
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# - Cleanup is done in pytest_unconfigure().
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# - Not a hookwrapper.
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# So we can add a hookwrapper ourselves to test what it does.
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pytester.makefile(".ini", pytest="[pytest]\npythonpath=I_SHALL_BE_REMOVED\n")
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pytester.makepyfile(test_foo="""def test_foo(): pass""")
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before: Optional[List[str]] = None
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after: Optional[List[str]] = None
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class Plugin:
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@pytest.hookimpl(hookwrapper=True, tryfirst=True)
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def pytest_unconfigure(self) -> Generator[None, None, None]:
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nonlocal before, after
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before = sys.path.copy()
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yield
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after = sys.path.copy()
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result = pytester.runpytest_inprocess(plugins=[Plugin()])
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assert result.ret == 0
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assert before is not None
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assert after is not None
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assert any("I_SHALL_BE_REMOVED" in entry for entry in before)
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assert not any("I_SHALL_BE_REMOVED" in entry for entry in after)
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