Fix the incorrect verbose of clear_name_cache() (#681)

* fix the incorrect verbose of `clear_name_cache()`

* add the test for naming

brainpy/_src/math/object_transform/naming.py

@@ -25,7 +25,7 @@ def check_name_uniqueness(name, obj):
         f'In BrainPy, each object should have a unique name. '
         f'However, we detect that {obj} has a used name "{name}". \n'
         f'If you try to run multiple trials, you may need \n\n'
-        f'>>> brainpy.brainpy_object.clear_name_cache() \n\n'
+        f'>>> brainpy.math.clear_name_cache() \n\n'
         f'to clear all cached names. '
       )
   else:

brainpy/_src/math/object_transform/tests/test_naming.py

@@ -0,0 +1,31 @@
+# Copyright 2024 BDP Ecosystem Limited. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# ==============================================================================
+
+
+import brainpy as bp
+import brainpy.math as bm
+import unittest
+
+
+class TestNaming(unittest.TestCase):
+
+  def test_clear_name_cache(self):
+    lif = bp.dyn.LifRef(1, name='a')
+    with self.assertRaises(bp.errors.UniqueNameError):
+      lif = bp.dyn.LifRef(1, name='a')
+    bm.clear_name_cache(ignore_warn=True)
+    lif = bp.dyn.LifRef(1, name='a')
+    bm.clear_name_cache()
+    bm.clear_buffer_memory(array=True, compilation=True)

docs/tutorial_building/customize_dynamical_systems.ipynb

@@ -626,7 +626,7 @@
     }
    ],
    "source": [
-    "runner = bp.dyn.DSRunner(fhn_net,\n",
+    "runner = bp.DSRunner(fhn_net,\n",
     "                         monitors=['f1.v', 'X.v'], \n",
     "                         inputs=[('f1.I', 1.5),   # relative access to variable \"I\" in 'fhn1'\n",
     "                                 ('X.I', 1.0),])  # absolute access to variable \"I\" in 'fhn2'\n",