Fixed pairs_to_indices & added test

python/anyon_braiding_simulator/Simulator.py

@@ -72,9 +72,9 @@ def pairs_to_indices(self, anyon_pairs: list) -> list:
                 index_1 = self.get_anyon_index(anyon_A)
                 index_2 = self.get_anyon_index(anyon_B)
                 anyon_indices.append((index_1, index_2))
-                return anyon_indices
             except ValueError:
                 raise
+        return anyon_indices
 
     def get_anyon_index(self, anyon_name: str) -> int:
         """

python/tests/test_simulator.py

@@ -0,0 +1,16 @@
+import pytest
+from Simulator import Simulator
+from anyon_braiding_simulator import Anyon, TopoCharge, IsingTopoCharge
+
+@pytest.mark.simulator
+def test_pairs_to_indices():
+    simulator = Simulator()
+    anyon1 = Anyon("anyon1", TopoCharge(IsingTopoCharge.Sigma), (1, 2))
+    anyon2 = Anyon("anyon2", TopoCharge(IsingTopoCharge.Psi), (3, 4))
+    anyon3 = Anyon("anyon3", TopoCharge(IsingTopoCharge.Vacuum), (5, 6))
+    simulator.update_anyons(True, [anyon1, anyon2, anyon3])
+
+    pairs = [("anyon1", "anyon2"), ("anyon2", "anyon3")]
+    indices = simulator.pairs_to_indices(pairs)
+
+    assert indices == [(0, 1), (1, 2)]