Group numba benchmark tests in same class

tests/link/numba/test_elemwise.py

@@ -130,25 +130,6 @@ def test_elemwise_runtime_broadcast():
     check_elemwise_runtime_broadcast(get_mode("NUMBA"))
 
 
-def test_elemwise_speed(benchmark):
-    x = pt.dmatrix("y")
-    y = pt.dvector("z")
-
-    out = np.exp(2 * x * y + y)
-
-    rng = np.random.default_rng(42)
-
-    x_val = rng.normal(size=(200, 500))
-    y_val = rng.normal(size=500)
-
-    func = function([x, y], out, mode="NUMBA")
-    func = func.vm.jit_fn
-    (out,) = func(x_val, y_val)
-    np.testing.assert_allclose(np.exp(2 * x_val * y_val + y_val), out)
-
-    benchmark(func, x_val, y_val)
-
-
 @pytest.mark.parametrize(
     "v, new_order",
     [
@@ -631,41 +612,6 @@ def test_Argmax(x, axes, exc):
         )
 
 
-@pytest.mark.parametrize("size", [(10, 10), (1000, 1000), (10000, 10000)])
-@pytest.mark.parametrize("axis", [0, 1])
-def test_logsumexp_benchmark(size, axis, benchmark):
-    X = pt.matrix("X")
-    X_max = pt.max(X, axis=axis, keepdims=True)
-    X_max = pt.switch(pt.isinf(X_max), 0, X_max)
-    X_lse = pt.log(pt.sum(pt.exp(X - X_max), axis=axis, keepdims=True)) + X_max
-
-    rng = np.random.default_rng(23920)
-    X_val = rng.normal(size=size)
-
-    X_lse_fn = pytensor.function([X], X_lse, mode="NUMBA")
-
-    # JIT compile first
-    res = X_lse_fn(X_val)
-    exp_res = scipy.special.logsumexp(X_val, axis=axis, keepdims=True)
-    np.testing.assert_array_almost_equal(res, exp_res)
-    benchmark(X_lse_fn, X_val)
-
-
-def test_fused_elemwise_benchmark(benchmark):
-    rng = np.random.default_rng(123)
-    size = 100_000
-    x = pytensor.shared(rng.normal(size=size), name="x")
-    mu = pytensor.shared(rng.normal(size=size), name="mu")
-
-    logp = -((x - mu) ** 2) / 2
-    grad_logp = grad(logp.sum(), x)
-
-    func = pytensor.function([], [logp, grad_logp], mode="NUMBA")
-    # JIT compile first
-    func()
-    benchmark(func)
-
-
 def test_elemwise_out_type():
     # Create a graph with an elemwise
     # Ravel failes if the elemwise output type is reported incorrectly
@@ -681,22 +627,6 @@ def test_elemwise_out_type():
     assert func(x_val).shape == (18,)
 
 
-@pytest.mark.parametrize(
-    "axis",
-    (0, 1, 2, (0, 1), (0, 2), (1, 2), None),
-    ids=lambda x: f"axis={x}",
-)
-@pytest.mark.parametrize(
-    "c_contiguous",
-    (True, False),
-    ids=lambda x: f"c_contiguous={x}",
-)
-def test_numba_careduce_benchmark(axis, c_contiguous, benchmark):
-    return careduce_benchmark_tester(
-        axis, c_contiguous, mode="NUMBA", benchmark=benchmark
-    )
-
-
 def test_scalar_loop():
     a = float64("a")
     scalar_loop = pytensor.scalar.ScalarLoop([a], [a + a])
@@ -709,3 +639,71 @@ def test_scalar_loop():
             ([x], [elemwise_loop]),
             (np.array([1, 2, 3], dtype="float64"),),
         )
+
+
+class TestsBenchmark:
+    def test_elemwise_speed(self, benchmark):
+        x = pt.dmatrix("y")
+        y = pt.dvector("z")
+
+        out = np.exp(2 * x * y + y)
+
+        rng = np.random.default_rng(42)
+
+        x_val = rng.normal(size=(200, 500))
+        y_val = rng.normal(size=500)
+
+        func = function([x, y], out, mode="NUMBA")
+        func = func.vm.jit_fn
+        (out,) = func(x_val, y_val)
+        np.testing.assert_allclose(np.exp(2 * x_val * y_val + y_val), out)
+
+        benchmark(func, x_val, y_val)
+
+    def test_fused_elemwise_benchmark(self, benchmark):
+        rng = np.random.default_rng(123)
+        size = 100_000
+        x = pytensor.shared(rng.normal(size=size), name="x")
+        mu = pytensor.shared(rng.normal(size=size), name="mu")
+
+        logp = -((x - mu) ** 2) / 2
+        grad_logp = grad(logp.sum(), x)
+
+        func = pytensor.function([], [logp, grad_logp], mode="NUMBA")
+        # JIT compile first
+        func()
+        benchmark(func)
+
+    @pytest.mark.parametrize("size", [(10, 10), (1000, 1000), (10000, 10000)])
+    @pytest.mark.parametrize("axis", [0, 1])
+    def test_logsumexp_benchmark(self, size, axis, benchmark):
+        X = pt.matrix("X")
+        X_max = pt.max(X, axis=axis, keepdims=True)
+        X_max = pt.switch(pt.isinf(X_max), 0, X_max)
+        X_lse = pt.log(pt.sum(pt.exp(X - X_max), axis=axis, keepdims=True)) + X_max
+
+        rng = np.random.default_rng(23920)
+        X_val = rng.normal(size=size)
+
+        X_lse_fn = pytensor.function([X], X_lse, mode="NUMBA")
+
+        # JIT compile first
+        res = X_lse_fn(X_val)
+        exp_res = scipy.special.logsumexp(X_val, axis=axis, keepdims=True)
+        np.testing.assert_array_almost_equal(res, exp_res)
+        benchmark(X_lse_fn, X_val)
+
+    @pytest.mark.parametrize(
+        "axis",
+        (0, 1, 2, (0, 1), (0, 2), (1, 2), None),
+        ids=lambda x: f"axis={x}",
+    )
+    @pytest.mark.parametrize(
+        "c_contiguous",
+        (True, False),
+        ids=lambda x: f"c_contiguous={x}",
+    )
+    def test_numba_careduce_benchmark(self, axis, c_contiguous, benchmark):
+        return careduce_benchmark_tester(
+            axis, c_contiguous, mode="NUMBA", benchmark=benchmark
+        )