1 files changed, 80 insertions, 0 deletions
diff --git a/conftest.py b/conftest.py
index 1aef80a..6b6d1cf 100644
--- a/conftest.py
+++ b/conftest.py
@@ -7,5 +7,85 @@
 import sys
 from pathlib import Path
 
+import pytest
+import pkgutil
+import functools
+from tempfile import TemporaryDirectory
+from typing import Iterable
+
 here = Path(__file__).resolve().parent
 sys.path.insert(0, str(here / 'src'))
+
+@pytest.fixture(autouse=True)
+def no_requests(monkeypatch):
+    """Remove requests.sessions.Session.request for all tests."""
+    monkeypatch.delattr('requests.sessions.Session.request')
+
+def _mock_subprocess_run(monkeypatch, where, mocked_run):
+    """Temporarily replace subprocess.run() with the given function."""
+    class MockedSubprocess:
+        """Minimal mocked version of the subprocess module."""
+        run = mocked_run
+
+    monkeypatch.setattr(where, 'subprocess', MockedSubprocess)
+
+@pytest.fixture
+def mock_subprocess_run(monkeypatch, request):
+    """
+    Facilitate temporarily replacing subprocess.run() with a different function.
+
+    If the 'subprocess_run' pytest marker has been used, perform the replacement
+    for the module-function pair supplied through it.
+
+    Return a function that can be called to perform the same replacement in
+    another fixture or from inside a test function.
+    """
+    mocker = functools.partial(_mock_subprocess_run, monkeypatch)
+
+    marker = request.node.get_closest_marker('subprocess_run')
+    if marker:
+        where, mocked_run = marker.args
+        mocker(where, mocked_run)
+
+    return mocker
+
+@pytest.fixture(autouse=True)
+def no_gettext(monkeypatch, request):
+    """
+    Make gettext return all strings untranslated unless we request otherwise.
+    """
+    if request.node.get_closest_marker('enable_gettext'):
+        return
+
+    import hydrilla
+    modules_to_process = [hydrilla]
+
+    def add_child_modules(parent):
+        """
+        Recursuvely collect all modules descending from 'parent' into an array.
+        """
+        try:
+            load_paths = parent.__path__
+        except AttributeError:
+            return
+
+        for module_info in pkgutil.iter_modules(load_paths):
+            if module_info.name != '__main__':
+                __import__(f'{parent.__name__}.{module_info.name}')
+                modules_to_process.append(getattr(parent, module_info.name))
+                add_child_modules(getattr(parent, module_info.name))
+
+    add_child_modules(hydrilla)
+
+    for module in modules_to_process:
+        if hasattr(module, '_'):
+            monkeypatch.setattr(module, '_', lambda message: message)
+
+@pytest.fixture
+def tmpdir() -> Iterable[Path]:
+    """
+    Provide test case with a temporary directory that will be automatically
+    deleted after the test.
+    """
+    with TemporaryDirectory() as tmpdir:
+        yield Path(tmpdir)