name : pytest_plugin_test.py """Tests that the pytest plugin properly provides the "fs" fixture""" import os import tempfile from pyfakefs.fake_filesystem import OSType from pyfakefs.fake_filesystem_unittest import Pause import pyfakefs.pytest_tests.io def test_fs_fixture(fs): fs.create_file("/var/data/xx1.txt") assert os.path.exists("/var/data/xx1.txt") def test_fs_fixture_alias(fake_filesystem): fake_filesystem.create_file("/var/data/xx1.txt") assert os.path.exists("/var/data/xx1.txt") def test_both_fixtures(fs, fake_filesystem): fake_filesystem.create_file("/var/data/xx1.txt") fs.create_file("/var/data/xx2.txt") assert os.path.exists("/var/data/xx1.txt") assert os.path.exists("/var/data/xx2.txt") assert fs == fake_filesystem def test_pause_resume(fs): fake_temp_file = tempfile.NamedTemporaryFile() assert fs.exists(fake_temp_file.name) assert os.path.exists(fake_temp_file.name) fs.pause() assert fs.exists(fake_temp_file.name) assert not os.path.exists(fake_temp_file.name) real_temp_file = tempfile.NamedTemporaryFile() assert not fs.exists(real_temp_file.name) assert os.path.exists(real_temp_file.name) fs.resume() assert not os.path.exists(real_temp_file.name) assert os.path.exists(fake_temp_file.name) def test_pause_resume_contextmanager(fs): fake_temp_file = tempfile.NamedTemporaryFile() assert fs.exists(fake_temp_file.name) assert os.path.exists(fake_temp_file.name) with Pause(fs): assert fs.exists(fake_temp_file.name) assert not os.path.exists(fake_temp_file.name) real_temp_file = tempfile.NamedTemporaryFile() assert not fs.exists(real_temp_file.name) assert os.path.exists(real_temp_file.name) assert not os.path.exists(real_temp_file.name) assert os.path.exists(fake_temp_file.name) def test_use_own_io_module(fs): filepath = "foo.txt" with open(filepath, "w") as f: f.write("bar") stream = pyfakefs.pytest_tests.io.InputStream(filepath) assert stream.read() == "bar" def test_switch_to_windows(fs): fs.os = OSType.WINDOWS assert os.path.exists(tempfile.gettempdir()) def test_switch_to_linux(fs): fs.os = OSType.LINUX assert os.path.exists(tempfile.gettempdir()) def test_switch_to_macos(fs): fs.os = OSType.MACOS assert os.path.exists(tempfile.gettempdir())