"""The virtual gamepad's placement (dm/ios/Sources/DmPadGeometry.h), built and run on the Mac.

pad_geometry/pad_geometry_check.m runs the same pure functions DmGamepad.m draws, hit-tests and grabs with, on the iPhone, iPad
and iPhone Duo screens (portrait, landscape, tabletop), in the 2D and the 3D layout and every DM_TOUCH_SIZE: every control stays
inside the safe area (the bottom corners reach halfway into the side insets, as always), no two drawn controls overlap, and the
built-in size is the layout the gamepad has always drawn. The player's arrangement (DM_TOUCH_LAYOUT): a value of zeros is the
built-in layout exactly, a malformed or too-long value is ignored whole, and seeded random arrangements on every screen, layout,
size and stick place never put a control outside its area, onto another or nearer than the gap, and a touch inside a drawn control
always goes to that control (dm_pad_hit, the gamepad's own hit-test). pad_geometry/UIKit/UIKit.h stands in for the few UIKit names
the headers use, so no simulator is needed.
"""
import shutil
import subprocess
import sys
import tempfile
import unittest
from pathlib import Path

IOS = Path(__file__).resolve().parents[1]
HERE = Path(__file__).resolve().parent / "pad_geometry"


@unittest.skipUnless(sys.platform == "darwin" and shutil.which("clang"), "needs clang and the Mac's CoreGraphics")
class PadGeometryTests(unittest.TestCase):
    def test_every_screen_size_and_layout(self):
        with tempfile.TemporaryDirectory() as tmp:
            exe = Path(tmp) / "pad_geometry_check"
            subprocess.run(["clang", "-x", "objective-c", "-fobjc-arc", "-Wall", "-Werror", "-Wno-unused-function",
                            "-I", str(HERE), "-I", str(IOS / "Sources"), str(HERE / "pad_geometry_check.m"),
                            "-framework", "Foundation", "-framework", "CoreGraphics", "-o", str(exe)], check=True)
            run = subprocess.run([str(exe)], capture_output=True, text=True)
            self.assertEqual(run.returncode, 0, run.stdout + run.stderr)
            self.assertIn("ok:", run.stdout)


if __name__ == "__main__":
    unittest.main()