Fix test

src/jimgw/transforms.py

@@ -89,7 +89,7 @@ def transform(self, x: dict[str, Float]) -> tuple[dict[str, Float], Float]:
         output_params = self.transform_func(transform_params)
         jacobian = jax.jacfwd(self.transform_func)(transform_params)
         jacobian = jnp.array(jax.tree.leaves(jacobian))
-        jacobian = jnp.log(jnp.linalg.det(jacobian.reshape(self.n_dim, self.n_dim)))
+        jacobian = jnp.log(jnp.absolute(jnp.linalg.det(jacobian.reshape(self.n_dim, self.n_dim))))
         jax.tree.map(
             lambda key: x_copy.pop(key),
             self.name_mapping[0],
@@ -126,7 +126,7 @@ def inverse(self, y: dict[str, Float]) -> tuple[dict[str, Float], Float]:
         output_params = self.inverse_transform_func(transform_params)
         jacobian = jax.jacfwd(self.inverse_transform_func)(transform_params)
         jacobian = jnp.array(jax.tree.leaves(jacobian))
-        jacobian = jnp.log(jnp.linalg.det(jacobian.reshape(self.n_dim, self.n_dim)))
+        jacobian = jnp.log(jnp.absolute(jnp.linalg.det(jacobian.reshape(self.n_dim, self.n_dim))))
         jax.tree.map(
             lambda key: y_copy.pop(key),
             self.name_mapping[1],

test/unit/test_prior.py

@@ -43,11 +43,8 @@ def test_sine(self):
         log_prob = jax.vmap(p.log_prob)(samples)
         assert jnp.all(jnp.isfinite(log_prob))
         # Check that the log_prob is correct in the support
-        x = trace_prior_parent(p, [])[0].add_name(jnp.linspace(-10.0, 10.0, 1000)[None])
-        y = jax.vmap(p.base_prior.base_prior.transform)(x)
-        y = jax.vmap(p.base_prior.transform)(y)
-        y = jax.vmap(p.transform)(y)
-        assert jnp.allclose(jax.vmap(p.log_prob)(y), jnp.log(jnp.sin(y['x'])/2.0))
+        samples = samples['x']
+        assert jnp.allclose(log_prob, jnp.log(jnp.sin(samples)/2.0))
 
     def test_cosine(self):
         p = CosinePrior(["x"])
@@ -57,11 +54,8 @@ def test_cosine(self):
         # Check that the log_prob is finite
         log_prob = jax.vmap(p.log_prob)(samples)
         assert jnp.all(jnp.isfinite(log_prob))
-        # Check that the log_prob is correct in the support
-        x = trace_prior_parent(p, [])[0].add_name(jnp.linspace(-10.0, 10.0, 1000)[None])
-        y = jax.vmap(p.base_prior.transform)(x)
-        y = jax.vmap(p.transform)(y)
-        assert jnp.allclose(jax.vmap(p.log_prob)(y), jnp.log(jnp.cos(y['x'])/2.0))
+        samples = samples['x']
+        assert jnp.allclose(log_prob, jnp.log(jnp.cos(samples)/2.0))
 
     def test_uniform_sphere(self):
         p = UniformSpherePrior(["x"])