diff --git a/brainpy/_src/dyn/synapses/delay_couplings.py b/brainpy/_src/dyn/synapses/delay_couplings.py
index ef43139da..8a848e646 100644
--- a/brainpy/_src/dyn/synapses/delay_couplings.py
+++ b/brainpy/_src/dyn/synapses/delay_couplings.py
@@ -64,7 +64,7 @@ def __init__(
     self.output_var = var_to_output
 
     # Connection matrix
-    self.conn_mat = bm.asarray(conn_mat)
+    self.conn_mat = conn_mat
     if self.conn_mat.shape != required_shape:
       raise ValueError(f'we expect the structural connection matrix has the shape of '
                        f'(pre.num, post.num), i.e., {required_shape}, '
diff --git a/brainpy/_src/math/event/tests/test_event_csrmv_taichi.py b/brainpy/_src/math/event/tests/test_event_csrmv_taichi.py
index bacf4076a..3bf4efda3 100644
--- a/brainpy/_src/math/event/tests/test_event_csrmv_taichi.py
+++ b/brainpy/_src/math/event/tests/test_event_csrmv_taichi.py
@@ -13,10 +13,6 @@
 
 # pytestmark = pytest.mark.skip(reason="Skipped due to pytest limitations, manual execution required for testing.")
 
-is_manual_test = False
-if sys.platform.startswith('darwin') and not is_manual_test:
-  pytest.skip('brainpy.math package may need manual tests.', allow_module_level=True)
-
 # bm.set_platform('cpu')
 
 seed = 1234
diff --git a/brainpy/_src/math/jitconn/tests/test_event_matvec_taichi.py b/brainpy/_src/math/jitconn/tests/test_event_matvec_taichi.py
index 8d03fe1e6..e42434e95 100644
--- a/brainpy/_src/math/jitconn/tests/test_event_matvec_taichi.py
+++ b/brainpy/_src/math/jitconn/tests/test_event_matvec_taichi.py
@@ -1,18 +1,12 @@
 # -*- coding: utf-8 -*-
 
-import sys
 
 import jax
 import jax.numpy as jnp
-import pytest
 from absl.testing import parameterized
 
 import brainpy.math as bm
 
-is_manual_test = False
-if sys.platform.startswith('darwin') and not is_manual_test:
-  pytest.skip('brainpy.math package may need manual tests.', allow_module_level=True)
-
 shapes = [(100, 200), (10, 1000), (2, 1000), (1000, 10), (1000, 2)]
 shapes = [(100, 200), (2, 1000), (1000, 2)]
 
diff --git a/brainpy/_src/math/jitconn/tests/test_matvec_taichi.py b/brainpy/_src/math/jitconn/tests/test_matvec_taichi.py
index eb56b0bee..e07e3db32 100644
--- a/brainpy/_src/math/jitconn/tests/test_matvec_taichi.py
+++ b/brainpy/_src/math/jitconn/tests/test_matvec_taichi.py
@@ -1,18 +1,12 @@
 # -*- coding: utf-8 -*-
 
-import sys
 
 import jax
 import jax.numpy as jnp
-import pytest
 from absl.testing import parameterized
 
 import brainpy.math as bm
 
-is_manual_test = False
-if sys.platform.startswith('darwin') and not is_manual_test:
-  pytest.skip('brainpy.math package may need manual tests.', allow_module_level=True)
-
 shapes = [(100, 200), (10, 1000), (2, 1000), (1000, 10), (1000, 2)]
 shapes = [(100, 200), (2, 1000), (1000, 2)]
 
diff --git a/brainpy/_src/math/op_register/tests/test_taichi_based.py b/brainpy/_src/math/op_register/tests/test_taichi_based.py
index 14ee77a81..9ba9b4459 100644
--- a/brainpy/_src/math/op_register/tests/test_taichi_based.py
+++ b/brainpy/_src/math/op_register/tests/test_taichi_based.py
@@ -8,8 +8,8 @@
 
 bm.set_platform('cpu')
 
-if not platform.platform().startswith('Windows'):
-  pytest.skip(allow_module_level=True)
+# if not platform.platform().startswith('Windows'):
+#   pytest.skip(allow_module_level=True)
 
 
 # @ti.kernel
diff --git a/brainpy/_src/math/sparse/tests/test_csrmv_taichi.py b/brainpy/_src/math/sparse/tests/test_csrmv_taichi.py
index 1c603da01..2b3d7b5b0 100644
--- a/brainpy/_src/math/sparse/tests/test_csrmv_taichi.py
+++ b/brainpy/_src/math/sparse/tests/test_csrmv_taichi.py
@@ -1,22 +1,13 @@
 # -*- coding: utf-8 -*-
 
-import sys
 from functools import partial
 
 import jax
-import pytest
 from absl.testing import parameterized
 
 import brainpy as bp
 import brainpy.math as bm
 
-# pytestmark = pytest.mark.skip(reason="Skipped due to pytest limitations, manual execution required for testing.")
-
-
-is_manual_test = False
-if sys.platform.startswith('darwin') and not is_manual_test:
-  pytest.skip('brainpy.math package may need manual tests.', allow_module_level=True)
-
 # bm.set_platform('gpu')
 
 seed = 1234