break repeated qubits into two error messages for repeat in measured_…

…targets or repeat in target_qubits

src/braket/circuits/circuit.py

@@ -763,20 +763,23 @@ def measure(self, target_qubits: QubitSetInput | None = None) -> Circuit:
 
         if target_qubits:
             # Check if the target_qubits are already measured
-            if (
-                self._measure_targets
-                and any(target in self._measure_targets for target in target_qubits)
-                or len(target_qubits) != len(set(target_qubits))
+            if self._measure_targets and any(
+                target in self._measure_targets for target in target_qubits
             ):
-                intersection = (
-                    set(target_qubits) & set(self._measure_targets)
-                    if self._measure_targets
-                    else [qubit for qubit, count in Counter(target_qubits).items() if count > 1]
-                )
+                intersection = set(target_qubits) & set(self._measure_targets)
                 raise ValueError(
                     f"cannot measure the same qubit(s) {', '.join(map(str, intersection))} "
                     "more than once."
                 )
+            # Check if there are repeated qubits in the same measurement
+            if len(target_qubits) != len(set(target_qubits)):
+                intersection = [
+                    qubit for qubit, count in Counter(target_qubits).items() if count > 1
+                ]
+                raise ValueError(
+                    f"cannot repeat qubit(s) {', '.join(map(str, intersection))} "
+                    "in the same measurement."
+                )
             self._add_measure(target_qubits=target_qubits)
         else:
             # Check if any qubits are already measured

test/unit_tests/braket/circuits/test_circuit.py

@@ -725,7 +725,7 @@ def test_measure_same_qubit_twice_with_list():
 
 
 def test_measure_same_qubit_twice_with_one_measure():
-    message = "cannot measure the same qubit\\(s\\) 0 more than once."
+    message = "cannot repeat qubit\\(s\\) 0 in the same measurement."
     with pytest.raises(ValueError, match=message):
         Circuit().h(0).cnot(0, 1).measure([0, 0, 0])