Add a simple test for numba compilation

Author: rlouf

tests/test_numba.py

@@ -0,0 +1,40 @@
+"""Test file created for the sole purpose of tracking the status of Numba compilation"""
+import aesara
+import aesara.tensor as at
+from aeppl import joint_logprob
+
+import aehmc.nuts as nuts
+
+
+def test_sample_with_numba():
+
+    srng = at.random.RandomStream(seed=0)
+    Y_rv = srng.normal(1, 2)
+
+    def logprob_fn(y):
+        logprob = joint_logprob({Y_rv: y})
+        return logprob
+
+    # Build the transition kernel
+    kernel = nuts.new_kernel(srng, logprob_fn)
+
+    # Compile a function that updates the chain
+    y_vv = Y_rv.clone()
+    initial_state = nuts.new_state(y_vv, logprob_fn)
+
+    step_size = at.as_tensor(1e-2)
+    inverse_mass_matrix = at.as_tensor(1.0)
+    (
+        next_state,
+        potential_energy,
+        potential_energy_grad,
+        acceptance_prob,
+        num_doublings,
+        is_turning,
+        is_diverging,
+    ), updates = kernel(*initial_state, step_size, inverse_mass_matrix)
+
+    next_step_fn = aesara.function([y_vv], next_state, updates=updates, mode="NUMBA")
+
+    # TODO: Assert something
+    next_step_fn(Y_rv.eval())