Fix representation checks in distance profile tests and update CI workflow configuration

Author: chaoming0625

.github/workflows/CI.yml

@@ -5,6 +5,7 @@ on:
     branches:
       - main
   pull_request:
+  workflow_call:
 
 
 permissions:

braintools/init/_distance_impl_test.py

@@ -90,7 +90,7 @@ def test_repr(self):
         profile = GaussianProfile(sigma=50.0 * u.um, max_distance=200.0 * u.um)
         repr_str = repr(profile)
         self.assertIn('GaussianProfile', repr_str)
-        self.assertIn('50.0', repr_str)
+        self.assertIn('50', repr_str)
 
 
 class TestExponentialProfile(unittest.TestCase):
@@ -378,7 +378,7 @@ def test_repr(self):
         profile = SigmoidProfile(midpoint=100.0 * u.um, slope=0.05, max_distance=300.0 * u.um)
         repr_str = repr(profile)
         self.assertIn('SigmoidProfile', repr_str)
-        self.assertIn('100.0', repr_str)
+        self.assertIn('100', repr_str)
 
 
 class TestDoGProfile(unittest.TestCase):
@@ -752,4 +752,4 @@ def test_repr(self):
         profile = MexicanHatProfile(sigma=50.0 * u.um, amplitude=1.0, max_distance=300.0 * u.um)
         repr_str = repr(profile)
         self.assertIn('MexicanHatProfile', repr_str)
-        self.assertIn('50.0', repr_str)
+        self.assertIn('50', repr_str)