"""Tests for pythonnative.utils platform detection."""

import os

import sys

import pytest

from pythonnative.utils import IS_ANDROID, IS_IOS, _detect_ios

class TestIosDetection:

"""``_detect_ios()`` should key off explicit signals only, not on the

presence of optional packages like ``rubicon-objc``.

"""

def test_detects_via_pn_platform_env(self, monkeypatch: pytest.MonkeyPatch) -> None:

monkeypatch.setenv("PN_PLATFORM", "ios")

assert _detect_ios() is True

def test_other_pn_platform_values_ignored(self, monkeypatch: pytest.MonkeyPatch) -> None:

monkeypatch.setenv("PN_PLATFORM", "desktop")

monkeypatch.delenv("HOME", raising=False)

monkeypatch.setattr(sys, "platform", "darwin")

assert _detect_ios() is False

def test_detects_via_sys_platform_ios(self, monkeypatch: pytest.MonkeyPatch) -> None:

monkeypatch.delenv("PN_PLATFORM", raising=False)

monkeypatch.setattr(sys, "platform", "ios")

assert _detect_ios() is True

def test_detects_via_core_simulator_home(self, monkeypatch: pytest.MonkeyPatch) -> None:

monkeypatch.delenv("PN_PLATFORM", raising=False)

monkeypatch.setattr(sys, "platform", "darwin")

monkeypatch.setenv(

"HOME",

"/Users/x/Library/Developer/CoreSimulator/Devices/ABCD/data",

)

assert _detect_ios() is True

def test_plain_macos_is_not_ios(self, monkeypatch: pytest.MonkeyPatch) -> None:

monkeypatch.delenv("PN_PLATFORM", raising=False)

monkeypatch.setattr(sys, "platform", "darwin")

monkeypatch.setenv("HOME", "/Users/owen")

assert _detect_ios() is False

def test_plain_linux_is_not_ios(self, monkeypatch: pytest.MonkeyPatch) -> None:

monkeypatch.delenv("PN_PLATFORM", raising=False)

monkeypatch.setattr(sys, "platform", "linux")

monkeypatch.setenv("HOME", "/home/runner")

assert _detect_ios() is False

class TestPlatformFlagsConsistency:

def test_both_flags_are_bools(self) -> None:

assert isinstance(IS_ANDROID, bool)

assert isinstance(IS_IOS, bool)

def test_flags_are_mutually_exclusive(self) -> None:

# A single Python process is never simultaneously Android and iOS.

assert not (IS_ANDROID and IS_IOS)

def test_ci_environment_is_neither(self) -> None:

"""The test suite runs on Linux/macOS hosts, so both flags are False."""

# This is more of a smoke check of the import-time detection: if

# this ever starts being True on CI, someone has accidentally made

# platform detection overeager on non-device hosts.

if os.environ.get("PN_PLATFORM") == "ios":

pytest.skip("Running under PN_PLATFORM=ios; flags correctly reflect that.")

assert IS_ANDROID is False

assert IS_IOS is False