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import threading

import jax.numpy as jnp
from typeguard import typechecked

from jaxtyping import Array, Float, jaxtyped


class _ErrorableThread(threading.Thread):
    def run(self):
        try:
            super().run()
        except Exception as e:
            self.exc = e

    def join(self, timeout=None):
        super().join(timeout)
        if hasattr(self, "exc"):
            raise self.exc


def test_threading_jaxtyped():
    @jaxtyped(typechecker=typechecked)
    def add(x: Float[Array, "a b"], y: Float[Array, "a b"]) -> Float[Array, "a b"]:
        return x + y

    def run():
        a = jnp.array([[1.0, 2.0]])
        b = jnp.array([[2.0, 3.0]])
        add(a, b)

    thread = _ErrorableThread(target=run)
    thread.start()
    thread.join()


def test_threading_nojaxtyped():
    def run():
        a = jnp.array([[1.0, 2.0]])
        assert isinstance(a, Float[Array, "..."])

    thread = _ErrorableThread(target=run)
    thread.start()
    thread.join()