pythonnative/tests/test_native_modules.py at v0.41.0 · pythonnative/pythonnative · GitHub

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"""Unit tests for the device-API native modules.

Off-device (neither Android nor iOS) every module falls back to a safe

default path: in-memory buffers, ``"unknown"`` states, and no-op

feedback. These tests exercise those Python fallbacks plus the

listener/dispatch machinery and the ``use_app_state`` / ``use_net_info``

hooks, none of which need a real device.

"""

from __future__ import annotations

import asyncio

from typing import Dict, Generator, List

import pytest

from pythonnative import (

AppState,

Battery,

Biometrics,

Clipboard,

Haptics,

Linking,

NetInfo,

Permissions,

SecureStore,

Share,

Vibration,

use_app_state,

use_net_info,

)

from pythonnative.component import component

from pythonnative.element import Element

from pythonnative.native_modules import app_state, battery, linking, net_info

from pythonnative.native_modules import registry as module_registry

from pythonnative.reconciler import Reconciler

from pythonnative.testing import FakeBackend as MockBackend

@pytest.fixture(autouse=True)

def _reset_module_state() -> Generator[None, None, None]:

"""Reset process-global module state so tests don't leak into each other."""

app_state._current = "active"

app_state._listeners.clear()

net_info._listeners.clear()

net_info._last_state = {"is_connected": True, "type": "unknown", "is_internet_reachable": True}

battery._listeners.clear()

module_registry.native_module("SecureStore").impl.clear() # type: ignore[attr-defined]

linking.set_initial_url(None)

Clipboard.set_string("")

yield

app_state._listeners.clear()

net_info._listeners.clear()

battery._listeners.clear()

# ======================================================================

# Clipboard

# ======================================================================

def test_clipboard_roundtrip_fallback() -> None:

Clipboard.set_string("hello world")

assert Clipboard.get_string() == "hello world"

assert Clipboard.has_string() is True

def test_clipboard_empty_has_string_false() -> None:

Clipboard.set_string("")

assert Clipboard.has_string() is False

# ======================================================================

# AppState + use_app_state

# ======================================================================

def test_app_state_default_active() -> None:

assert AppState.current_state() == "active"

def test_app_state_listener_notified_on_dispatch() -> None:

seen: List[str] = []

unsubscribe = AppState.add_listener(seen.append)

app_state.dispatch_app_state("background")

assert seen == ["background"]

assert AppState.current_state() == "background"

unsubscribe()

app_state.dispatch_app_state("active")

assert seen == ["background"] # unsubscribed, no new event

def test_app_state_ignores_invalid_and_duplicate() -> None:

seen: List[str] = []

AppState.add_listener(seen.append)

app_state.dispatch_app_state("active") # same as current -> ignored

app_state.dispatch_app_state("bogus") # invalid -> ignored

assert seen == []

def test_use_app_state_returns_current_and_rerenders() -> None:

rendered: List[str] = []

@component

def comp() -> Element:

rendered.append(use_app_state())

return Element("Text", {"text": "ok"}, [])

backend = MockBackend()

rec = Reconciler(backend)

rec.on_render_requested = lambda: rec.reconcile(comp())

rec.mount(comp())

before = len(rendered)

assert rendered[0] == "active"

app_state.dispatch_app_state("background")

assert len(rendered) > before

assert rendered[-1] == "background"

# ======================================================================

# NetInfo + use_net_info

# ======================================================================

def test_net_info_fetch_fallback_default() -> None:

state = NetInfo.fetch()

assert state["is_connected"] is True

assert state["type"] == "unknown"

def test_net_info_listener_notified() -> None:

seen: List[Dict[str, object]] = []

NetInfo.add_listener(seen.append)

net_info.dispatch_net_info({"is_connected": False, "type": "none", "is_internet_reachable": False})

assert seen[0]["is_connected"] is False

assert NetInfo.fetch()["type"] == "none"

def test_use_net_info_rerenders_on_change() -> None:

rendered: List[Dict[str, object]] = []

@component

def comp() -> Element:

rendered.append(use_net_info())

return Element("Text", {"text": "ok"}, [])

backend = MockBackend()

rec = Reconciler(backend)

rec.on_render_requested = lambda: rec.reconcile(comp())

rec.mount(comp())

before = len(rendered)

net_info.dispatch_net_info({"is_connected": False, "type": "cellular", "is_internet_reachable": True})

assert len(rendered) > before

assert rendered[-1]["type"] == "cellular"

# ======================================================================

# Battery

# ======================================================================

def test_battery_fallback_defaults() -> None:

assert Battery.get_level() == -1.0

assert Battery.get_state() == "unknown"

def test_battery_listener_dispatch() -> None:

seen: List[Dict[str, object]] = []

Battery.add_listener(seen.append)

battery.dispatch_battery(0.5, "charging")

assert seen[0] == {"level": 0.5, "state": "charging"}

# ======================================================================

# SecureStore

# ======================================================================

def test_secure_store_roundtrip_fallback() -> None:

assert SecureStore.set_item("token", "abc123") is None

assert SecureStore.get_item("token") == "abc123"

assert SecureStore.delete_item("token") is True

assert SecureStore.get_item("token") is None

assert SecureStore.delete_item("token") is False

# ======================================================================

# Permissions

# ======================================================================

def test_permissions_check_undetermined_fallback() -> None:

assert Permissions.check("camera") == "undetermined"

def test_permissions_request_undetermined_fallback() -> None:

assert asyncio.run(Permissions.request("camera")) == "undetermined"

def test_permissions_names_match_the_config_vocabulary() -> None:

"""Runtime permission names are the [permissions] keys from pythonnative.toml."""

from pythonnative.native_modules.permissions import RUNTIME_PERMISSIONS

from pythonnative.project.permissions import CAPABILITIES

assert set(RUNTIME_PERMISSIONS) <= set(CAPABILITIES)

assert "photo_library" in RUNTIME_PERMISSIONS and "location_when_in_use" in RUNTIME_PERMISSIONS

@pytest.mark.parametrize("name", ["photos", "location", "Camera", ""])

def test_permissions_reject_names_outside_the_vocabulary(name: str) -> None:

with pytest.raises(ValueError, match="Unknown permission"):

Permissions.check(name) # type: ignore[arg-type]

with pytest.raises(ValueError, match="Unknown permission"):

asyncio.run(Permissions.request(name)) # type: ignore[arg-type]

def test_permissions_surface_native_errors() -> None:

class Broken:

def check(self, permission: str) -> str:

raise RuntimeError("no activity")

module_registry.register_python_module("Permissions", Broken())

try:

with pytest.raises(module_registry.NativeModuleError, match="no activity"):

Permissions.check("camera")

finally:

module_registry.unregister_python_module("Permissions")

# ======================================================================

# Linking

# ======================================================================

def test_linking_fallback_false() -> None:

assert Linking.can_open_url("https://example.com") is False

assert Linking.open_url("https://example.com") is False

assert Linking.open_settings() is False

def test_linking_initial_url() -> None:

assert Linking.get_initial_url() is None

linking.set_initial_url("myapp://launch")

assert Linking.get_initial_url() == "myapp://launch"

def test_linking_dispatch_url_notifies_listeners() -> None:

linking.set_initial_url(None)

received: list = []

unsubscribe = Linking.add_listener(received.append)

try:

linking.dispatch_url("myapp://one")

linking.dispatch_url("myapp://two")

finally:

unsubscribe()

linking.dispatch_url("myapp://after-unsubscribe")

assert received == ["myapp://one", "myapp://two"]

# The first dispatched URL doubles as the cold-start initial URL.

assert Linking.get_initial_url() == "myapp://one"

linking.set_initial_url(None)

def test_linking_listener_errors_do_not_break_dispatch() -> None:

linking.set_initial_url(None)

received: list = []

def _bad(_url: str) -> None:

raise RuntimeError("boom")

unsub_bad = Linking.add_listener(_bad)

unsub_ok = Linking.add_listener(received.append)

try:

linking.dispatch_url("myapp://x")

finally:

unsub_bad()

unsub_ok()

assert received == ["myapp://x"]

linking.set_initial_url(None)

# ======================================================================

# Notifications: remote push registration

# ======================================================================

def test_get_device_token_none_on_fallback() -> None:

from pythonnative.native_modules.notifications import Notifications

assert asyncio.run(Notifications.get_device_token()) is None

def test_get_device_token_surfaces_native_error() -> None:

from pythonnative.native_modules.notifications import Notifications

class FailingNotifications:

def get_device_token(self) -> str:

raise module_registry.NativeModuleError("Notifications", "get_device_token", "no entitlement")

module_registry.register_python_module("Notifications", FailingNotifications())

try:

with pytest.raises(module_registry.NativeModuleError, match="no entitlement"):

asyncio.run(Notifications.get_device_token())

finally:

module_registry.unregister_python_module("Notifications")

def test_async_facades_surface_native_errors() -> None:

"""Camera / Share / Biometrics propagate a rejected promise instead of returning a default."""

from pythonnative import Camera

class Busy:

def take_photo(self) -> str:

raise module_registry.NativeModuleError("Camera", "take_photo", "a picker is already open", code="busy")

module_registry.register_python_module("Camera", Busy())

try:

with pytest.raises(module_registry.NativeModuleError) as info:

asyncio.run(Camera.take_photo())

assert info.value.code == "busy"

finally:

module_registry.unregister_python_module("Camera")

def test_camera_cancel_is_none_not_an_error() -> None:

from pythonnative import Camera

assert asyncio.run(Camera.take_photo()) is None

assert asyncio.run(Camera.pick_from_gallery()) is None

# ======================================================================

# Module events pushed from native

# ======================================================================

def test_native_module_events_reach_facade_listeners() -> None:

seen_states: List[str] = []

seen_urls: List[str] = []

seen_battery: List[Dict[str, object]] = []

seen_net: List[Dict[str, object]] = []

AppState.add_listener(seen_states.append)

Linking.add_listener(seen_urls.append)

Battery.add_listener(seen_battery.append)

NetInfo.add_listener(seen_net.append)

module_registry.dispatch_module_message("AppState", {"event": "change", "payload": "background"})

module_registry.dispatch_module_message("Linking", {"event": "url", "payload": "myapp://deep"})

module_registry.dispatch_module_message("Battery", {"event": "change", "payload": {"level": 0.25, "state": "full"}})

module_registry.dispatch_module_message(

"NetInfo", {"event": "change", "payload": {"is_connected": False, "type": "none"}}

)

assert seen_states == ["background"]

assert AppState.current_state() == "background"

assert seen_urls == ["myapp://deep"]

assert Linking.get_initial_url() == "myapp://deep"

assert seen_battery == [{"level": 0.25, "state": "full"}]

assert seen_net == [{"is_connected": False, "type": "none", "is_internet_reachable": False}]

assert net_info._last_state["type"] == "none"

# ======================================================================

# Share / Biometrics / Haptics (fallback no-ops)

# ======================================================================

def test_share_returns_false_fallback() -> None:

assert asyncio.run(Share.share(message="hi", url="https://example.com")) is False

def test_biometrics_unavailable_fallback() -> None:

assert Biometrics.is_available() is False

def test_biometrics_authenticate_false_fallback() -> None:

assert asyncio.run(Biometrics.authenticate("Unlock")) is False

def test_haptics_and_vibration_are_noops_fallback() -> None:

# Should not raise off device.

Haptics.impact("light")

Haptics.notification("success")

Haptics.selection()

Vibration.vibrate(100)

Vibration.cancel()

# ======================================================================

# FileSystem

# ======================================================================

@pytest.fixture

def app_dir(tmp_path, monkeypatch: pytest.MonkeyPatch): # type: ignore[no-untyped-def]

from pythonnative.native_modules import file_system

monkeypatch.setattr(file_system, "_app_dir_cache", str(tmp_path))

return tmp_path

def test_file_system_paths_resolve_against_app_dir(app_dir) -> None: # type: ignore[no-untyped-def]

from pythonnative import FileSystem

assert FileSystem.app_dir() == str(app_dir)

assert FileSystem.path() == app_dir

assert FileSystem.path("notes/a.txt") == app_dir / "notes" / "a.txt"

assert FileSystem.path(str(app_dir / "abs.txt")) == app_dir / "abs.txt"

def test_file_system_roundtrip_creates_parents(app_dir) -> None: # type: ignore[no-untyped-def]

from pythonnative import FileSystem

FileSystem.write_text("notes/today.txt", "hello")

assert FileSystem.read_text("notes/today.txt") == "hello"

FileSystem.write_bytes("blobs/x.bin", b"\x00\x01")

assert FileSystem.read_bytes("blobs/x.bin") == b"\x00\x01"

assert FileSystem.get_size("blobs/x.bin") == 2

assert FileSystem.exists("notes/today.txt") and not FileSystem.exists("nope")

assert FileSystem.list_dir() == ["blobs", "notes"]

assert FileSystem.ensure_dir("cache/img") == app_dir / "cache" / "img"

FileSystem.delete("notes/today.txt")

assert not FileSystem.exists("notes/today.txt")

FileSystem.delete("notes/today.txt", missing_ok=True)

def test_file_system_raises_os_errors_like_pathlib(app_dir) -> None: # type: ignore[no-untyped-def]

from pythonnative import FileSystem

with pytest.raises(FileNotFoundError):

FileSystem.read_text("missing.txt")

with pytest.raises(FileNotFoundError):

FileSystem.get_size("missing.txt")

with pytest.raises(FileNotFoundError):

FileSystem.delete("missing.txt")

with pytest.raises(FileNotFoundError):

FileSystem.list_dir("missing-dir")

pythonnative/tests/test_native_modules.py at v0.41.0 · pythonnative/pythonnative · GitHub

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