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from __future__ import annotations
import asyncio
import os
import shutil
from tempfile import mkdtemp
from unittest.mock import patch
import pytest
from traitlets import Integer
from jupyter_core.application import JupyterApp, JupyterAsyncApp, NoStart
from jupyter_core.utils import ensure_event_loop
pjoin = os.path.join
def test_basic():
JupyterApp()
def test_default_traits():
app = JupyterApp()
for trait_name in app.traits():
getattr(app, trait_name)
class DummyApp(JupyterApp):
name = "dummy-app"
m = Integer(0, config=True)
n = Integer(0, config=True)
_dummy_config = """
c.DummyApp.n = 10
"""
def test_custom_config():
app = DummyApp()
td = mkdtemp()
fname = pjoin(td, "config.py")
with open(fname, "w", encoding="utf-8") as f:
f.write(_dummy_config)
app.initialize(["--config", fname])
shutil.rmtree(td)
assert app.config_file == fname
assert app.n == 10
def test_cli_override():
app = DummyApp()
td = mkdtemp()
fname = pjoin(td, "config.py")
with open(fname, "w", encoding="utf-8") as f:
f.write(_dummy_config)
app.initialize(["--config", fname, "--DummyApp.n=20"])
shutil.rmtree(td)
assert app.n == 20
def test_generate_config():
td = mkdtemp()
app = DummyApp(config_dir=td)
app.initialize(["--generate-config"])
assert app.generate_config
with pytest.raises(NoStart):
app.start()
assert os.path.exists(os.path.join(td, "dummy_app_config.py"))
def test_load_config():
config_dir = mkdtemp()
os.environ["JUPYTER_CONFIG_PATH"] = str(config_dir)
with open(pjoin(config_dir, "dummy_app_config.py"), "w", encoding="utf-8") as f:
f.write("c.DummyApp.m = 1\n")
f.write("c.DummyApp.n = 1")
app = DummyApp(config_dir=config_dir)
app.initialize([])
assert app.n == 1, "Loaded config from config dir"
assert app.m == 1, "Loaded config from config dir"
shutil.rmtree(config_dir)
del os.environ["JUPYTER_CONFIG_PATH"]
def test_load_config_no_cwd():
config_dir = mkdtemp()
wd = mkdtemp()
with open(pjoin(wd, "dummy_app_config.py"), "w", encoding="utf-8") as f:
f.write("c.DummyApp.m = 1\n")
f.write("c.DummyApp.n = 1")
with patch.object(os, "getcwd", lambda: wd):
app = DummyApp(config_dir=config_dir)
app.initialize([])
assert app.n == 0
assert app.m == 0
shutil.rmtree(config_dir)
shutil.rmtree(wd)
def test_load_bad_config():
config_dir = mkdtemp()
os.environ["JUPYTER_CONFIG_PATH"] = str(config_dir)
with open(pjoin(config_dir, "dummy_app_config.py"), "w", encoding="utf-8") as f:
f.write('c.DummyApp.m = "a\n') # Syntax error
with pytest.raises(SyntaxError): # noqa: PT012
app = DummyApp(config_dir=config_dir)
app.raise_config_file_errors = True
app.initialize([])
shutil.rmtree(config_dir)
del os.environ["JUPYTER_CONFIG_PATH"]
def test_runtime_dir_changed():
app = DummyApp()
td = mkdtemp()
shutil.rmtree(td)
app.runtime_dir = td
assert os.path.isdir(td)
shutil.rmtree(td)
class AsyncioRunApp(JupyterApp):
async def _inner(self):
pass
def start(self):
asyncio.run(self._inner())
def test_asyncio_run():
AsyncioRunApp.launch_instance([])
AsyncioRunApp.clear_instance()
class SyncTornadoApp(JupyterApp):
async def _inner(self):
self.running_loop = asyncio.get_running_loop()
def start(self):
self.starting_loop = ensure_event_loop()
loop = asyncio.get_event_loop()
loop.run_until_complete(self._inner())
loop.close()
def test_sync_tornado_run():
SyncTornadoApp.launch_instance([])
app = SyncTornadoApp.instance()
assert app.running_loop == app.starting_loop
SyncTornadoApp.clear_instance()
class AsyncApp(JupyterAsyncApp):
async def initialize_async(self, argv):
self.value = 10
async def start_async(self):
assert self.value == 10
def test_async_app():
AsyncApp.launch_instance([])
app = AsyncApp.instance()
assert app.value == 10
AsyncApp.clear_instance()
class AsyncTornadoApp(AsyncApp):
_prefer_selector_loop = True
def test_async_tornado_app():
AsyncTornadoApp.launch_instance([])
app = AsyncApp.instance()
assert app._prefer_selector_loop is True
AsyncTornadoApp.clear_instance()
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