test: add test for issue #237

CQCL · Oct 4, 2024 · 18d1b46 · 18d1b46
1 parent c758863
commit 18d1b46
Showing 1 changed file with 9 additions and 0 deletions.
diff --git a/tests/test_phirgen.py b/tests/test_phirgen.py
@@ -486,3 +486,12 @@ def test_condition_multiple_bits() -> None:
             },
         ],
     }
+
+
+def test_unused_classical_registers() -> None:
+    """From https://github.com/CQCL/pytket-phir/issues/237 ."""
+    circ = Circuit()
+    _ = circ.add_c_register("a", 1)
+    phir = json.loads(pytket_to_phir(circ))
+
+    assert phir["ops"] != []