fix test bugs

Author: chaoming0625

brainpy/analysis/lowdim/tests/test_phase_plane.py

@@ -18,7 +18,7 @@ def int_x(x, t, Iext):
     analyzer = bp.analysis.PhasePlane1D(model=int_x,
                                         target_vars={'x': [-2, 2]},
                                         pars_update={'Iext': 0.},
-                                        resolutions=0.001)
+                                        resolutions=0.01)
 
     plt.ion()
     analyzer.plot_vector_field()
@@ -60,7 +60,7 @@ def int_s2(s2, t, s1):
     analyzer = bp.analysis.PhasePlane2D(
       model=[int_s1, int_s2],
       target_vars={'s1': [0, 1], 's2': [0, 1]},
-      resolutions=0.0005
+      resolutions=0.001
     )
     plt.ion()
     analyzer.plot_vector_field()

brainpy/base/tests/test_collector.py

@@ -28,7 +28,7 @@ def __init__(self, pre, post, conn, delay=0., g_max=0.1, E=-75.,
     # variables
     self.t_last_pre_spike = bp.math.ones(self.size) * -1e7
     self.s = bp.math.zeros(self.size)
-    self.g = self.register_constant_delay('g', size=self.size, delay=delay)
+    self.g = bp.dyn.ConstantDelay(size=self.size, delay=delay)
 
   @bp.odeint
   def int_s(self, s, t, TT):
@@ -227,7 +227,7 @@ def __init__(self, pre, post, conn, delay=0., g_max=0.1, E=-75.,
     # variables
     self.t_last_pre_spike = bp.math.Variable(bp.math.ones(self.size) * -1e7)
     self.s = bp.math.Variable(bp.math.zeros(self.size))
-    self.g = self.register_constant_delay('g', size=self.size, delay=delay)
+    self.g = bp.dyn.ConstantDelay(size=self.size, delay=delay)
 
   @bp.odeint
   def int_s(self, s, t, TT):

brainpy/dyn/tests/test_access_methods.py

@@ -27,7 +27,7 @@ def __init__(self, pre, post, conn, delay=0., g_max=0.1, E=-75.,
     # variables
     self.t_last_pre_spike = bp.math.ones(self.size) * -1e7
     self.s = bp.math.zeros(self.size)
-    self.g = self.register_constant_delay('g', size=self.size, delay=delay)
+    self.g = bp.dyn.ConstantDelay(size=self.size, delay=delay)
 
   @staticmethod
   @bp.odeint